COMPOUND IN SHEET FORM, PROCESS, CONTAINER PRECURSOR, CLOSED CONTAINER, USE OF COMPOUND IN SHEET FOR

专利摘要:
The present invention relates to a composite in sheet form comprising, as layers of a sequence of layers: (a) an outer polymer layer; (b) a carrier layer following the outer polymer layer; (c) a barrier layer following the vehicle layer; (d) an adhesion promoting layer following the barrier layer; and (e) an inner polymer layer following the adhesion promoting layer; wherein the adhesion-promoting layer comprises an outer surface of the adhesion-promoting layer and an inner surface of the adhesion-promoting layer; wherein the outer surface of the adhesion-promoting layer (i) is adjacent to the barrier layer and (ii) is characterized by first c=o group absorption maxima; wherein the inner surface of the adhesion promoting layer (a) is adjacent to the inner polymer layer; (b) is characterized by second absorption maxima of group c=o; and (c) has a first distance to the outer surface of the adhesion-promoting layer, wherein the first c=o group absorption maxima is higher than the second c=o group absorption maxima. the present invention further relates to a process for manufacturing a compound in sheet form; a compound in sheet form, obtainable through the process; a container precursor; a process for producing container precursors; a container precursor obtainable through the process; a container; a container production process; a container obtainable through the process; use of the compost in sheet form; and use of the container.
公开号:BR112017000220B1
申请号:R112017000220-5
申请日:2015-07-01
公开日:2021-08-24
发明作者:Jannis Ochsmann；Jörg Bischoff
申请人:Sig Technology Ag；
IPC主号:

专利说明:

[0001] The present invention relates to a composite in sheet form, comprising an adhesion-promoting layer, comprising an adhesion-promoting layer of the outer surface and an adhesion-promoting layer of the inner surface, wherein the promoter layer of the outer surface adhesion is characterized by first C=O group absorption maxima, wherein the inner surface adhesion promoting layer is characterized by second C=O group absorption maxima and first C=group absorption maxima O is higher than the second C=O group absorption maximum; production process of a composite in sheet form; composite in sheet form that can be obtained through the process; container precursor; container precursor production process; container precursor obtainable by this process; container; container production process; container that can be obtained through this process; use of the composite in sheet form; and use of the container.
[0002] For a long time, the preservation of food, whether food for human consumption or also animal feed products, has been carried out by storing it in cans or glass jars that are closed with a lid. The durability can be increased, therefore, with as much sterilization as possible of the food products and the container, in this case the glass pot or can, and the food product is then placed in the container, which is finally sealed. These measures have been shown to increase the durability of food products for a long time, but they also have a number of disadvantages, such as the need for additional down-flow sterilization. Cans and glass jars have the disadvantage that, due to their essentially cylindrical shape, it is not possible to store them in a very dense and space-saving way. In addition, glass cans and jars have a considerable net weight, which increases energy expenditure during transport. Additionally, a reasonably large amount of energy is required for the production of glass, tin or aluminum, even if the raw material used for this purpose comes from recycled sources. In the case of glass jars, increased transport costs are an additional problem. Glass pots are normally pre-fabricated in glass factories and need to be transported in considerable transport volumes thereafter to the food product filling facility. Furthermore, glass jars and cans can only be opened using considerable force or with the aid of tools, in a somewhat inconvenient process. In the case of cans, there is also an additional high risk of injury due to the sharp edges resulting from the opening process. In the case of glass jars, often during the process of filling or opening the filled glass jars, glass fragments get into the food product, which, in the worst case, can lead to internal injuries during consumption of the food product. In addition, both cans and glass jars need labels to be affixed to them to identify and advertise the food product contained therein. Advertising information and illustrations cannot be printed directly on cans and glass jars. In addition to the actual printing process, therefore, a substrate for this purpose is also required, ie a suitable paper or film, in addition to a fixing agent, adhesive or sealing material.
[0003] Other prior art packaging systems for storing food products for the longest possible period of time without adverse effects are also well known. These consist of containers made from sheet-shaped composites, often called laminates. Such sheet-shaped composites are often composed of a thermoplastic layer, a carrier layer consisting primarily of cardboard or paper, an adhesion-promoting layer, a barrier layer and an additional layer of plastic, as described, among others, in WO 90/09926 A2.
[0004] These laminated containers already have many advantages compared to conventional glass cans and jars. However, there are also opportunities to improve these packaging systems. In prior art laminates, an additional adhesion promoting layer is positioned between the barrier layer and the additional plastic layer. According to DE 10 2010 033 466 B4, the additional adhesion-promoting layer is intended to establish a fixed bond with the barrier layer, for example, through the formation of chemical bonds. This is to prevent delamination of the additional plastic layer from the barrier layer. This is particularly important because the additional plastic layer comes into contact with the filled food product in the laminated container and therefore should ensure a high degree of impermeability and the best possible sterility of the additional plastic layer. In order to achieve the best possible adhesion of the additional adhesion promoting layer to the barrier layer, the additional adhesive layer in DE 10 2010 033 466 B4 contains functionalized polyolefins which have been obtained by copolymerization of ethylene with acrylic acid, acrylates, derivatives of acrylate or double bond carboxylic anhydrides. In WO 98/26994 A1 the additional adhesion promoting layer includes an ethylene acrylic acid copolymer. This makes the manufacture of the plastic for the additional adhesion promoting layer relatively more expensive and elaborate. This has specific repercussions because the additional adhesion promoting layer should be of sufficient thickness and preferably thicker than the additional plastic layer.
[0005] In general terms, the objective of the present invention is to overcome, at least partially, the disadvantages arising from the state of the art technology. Another objective of the present invention is to provide a food container made with a laminate at a lower cost, while maintaining the adhesive properties between the barrier layer and the inner polymer layer. Another object of the present invention is to provide a food container made of a laminate, in which the durability of non-emulsified meat broths, particularly ham broths or apple and cashew juices, or both, is improved. Furthermore, it is an object of the present invention to provide a food container made with a laminate that has a lower weight. A further object of the present invention is to provide a food container made of laminate, wherein the food container exhibits high stability or firmness, particularly for storing fatty and/or acidic foods, or both. Another objective of the present invention is to provide food containers made of laminate, which can be produced through easy folding of the laminate, with high rigidity at the same time. The container should therefore be particularly suitable for long-term storage of sensitive food, especially fatty and/or acidic. Another object of the present invention is to provide a laminated food container that is inexpensive or can be manufactured with as few process steps as possible, or both. Another object of the present invention is to provide a food container made of laminate with a combination of two or more, preferably all the advantages mentioned above. Another objective of the present invention is to solve one or a combination of at least two of the objects mentioned above without deterioration of any other property of the food container.
[0006] A contribution to the fulfillment of at least partial of at least one of the above objects is reached by the independent claims. Dependent claims provide preferable realizations that contribute to at least partial fulfillment of at least one of the objects.
[0007] A contribution to meet at least one of the objectives of the present invention provides an embodiment 1 of a composite in sheet form 1, comprising, as layers of a sequence of layers: a. an outer polymer layer; B. a carrier layer following the outer polymer layer; ç. a barrier layer following the vehicle layer; d. an adhesion promoting layer following the barrier layer; and is. an inner polymer layer following the adhesion promoting layer; wherein the adhesion-promoting layer comprises an outer surface of the adhesion-promoting layer and an inner surface of the adhesion-promoting layer; wherein the outer surface of the adhesion promoting layer: i. is adjacent to the barrier layer; and ii. is characterized by first absorption maximum of C=O group; wherein the inner surface of the adhesion promoting layer: A. is adjacent to the inner polymer layer; B. is characterized by second C=O group absorption maxima; and C. has first distance to the outer surface of the adhesion promoting layer; where the first C=O group absorption maximum is higher than the second C=O group absorption maximum.
[0008] An embodiment 2 of the sheet-shaped composite 1 according to the present invention is configured according to embodiment 1, wherein the adhesion promoting layer at first layer layer with second distance from the adhesion promoting layer to the outer surface has third C=O group absorption maximum; wherein the second distance represents from 5 to 95%, preferably of the first distance; where the third C=O group absorption maximum: a. is less than the first C=O group absorption maximum; and b. is greater than the second C=O group absorption maximum.
[0009] An embodiment 3 of the sheet-shaped composite 1 according to the present invention is configured according to either embodiment 1 or 2, wherein the first absorption maximum of group C=O is in the range of 0 .1 to 5, preferably from 0.2 to 4, more preferably from 0.3 to 3, more preferably from 0.35 to 2.8, more preferably from 0.4 to 2.6, most preferably from 0.45 to 2.4, preferably higher from 0.5 to 2.2.
[0010] An embodiment 4 of the sheet-shaped composite 1 according to the present invention is configured according to any of the embodiments 1 to 3, wherein the second absorption maximum of group C=O is in the range of more from 0 to 1, preferably from 0.01 to 1, more preferably from 0.02 to 1, more preferably from 0.04 to 1, more preferably from 0.06 to 1, most preferably from 0.08 to 1 and preferably higher from 0.1 to 0.9.
[0011] An embodiment 5 of the sheet-shaped composite 1 according to the present invention is configured according to any of embodiments 2 to 4, wherein the third absorption maximum of group C=O is in the range of 0.015 to 4.5, preferably from 0.02 to 3.5, preferably from 0.05 to 2.5, preferably from 0.1 to 2, more preferably from 0.15 to 1.7, most preferably from 0 .15 to 1.3 and, preferably higher, from 0.2 to 1.
[0012] An embodiment 6 of the sheet-shaped composite 1 according to the present invention is configured according to any of embodiments 2 to 5, wherein the second distance is from 5 to 20%, preferably from 5 to 15%, more preferably from 5 to 12% of the first distance, wherein the third C=O group absorption maximum is in the range from 0.05 to 4.5, preferably from 0.1 to 4, most preferably from 0.2 to 3, more preferably from 0.3 to 2.5, more preferably from 0.35 to 2.2, more preferably from 0.4 to 2.2 and most preferably from 0. 4 to 2.
[0013] An embodiment 7 of the sheet-shaped composite 1 according to the present invention is configured according to any of embodiments 2 to 5, wherein the second distance is from 50 to 95%, preferably from 60 to 95%, more preferably from 70 to 95%, more preferably from 80 to 95%, more preferably from 90 to 95% of the first distance, wherein the third C=O group absorption maximum is in the range of 0.015 to 1.2, preferably from 0.02 to 1.2, preferably from 0.04 to 1.1, more preferably from 0.07 to 1.1, most preferably from 0.1 to 1.1, most preferably preferably from 0.15 to 1.1 and more preferably from 0.15 to 1.
[0014] An embodiment 8 of the sheet-shaped composite 1 according to the present invention is configured according to any of embodiments 2 to 7, wherein the adhesion-promoting layer at additional layer level with third distance from the adhesion-promoting layer. adhesion to the external surface has a fourth maximum of C=O group absorption; where the third distance is greater than the second distance; and the fourth maximum absorption of the C=O group: a. is less than the third C=O group absorption maximum; and c. is greater than the second C=O group absorption maximum.
[0015] An embodiment 9 of the sheet-shaped composite 1 according to the present invention is configured according to any of the previous embodiments, wherein an absorption maximum of C=O group of the adhesion promoting layer along a line straight from the outer surface adhesion promoting layer to the inner surface adhesion promoting layer falls in at least two, preferably at least three, more preferably at least four and most preferably at least five steps.
[0016] An embodiment 10 of the sheet-shaped composite 1 according to the present invention is configured according to one of the previous embodiments, in which an element selected from the group consisting of the first absorption maximum of group C=O , second C=O group absorption maximum, third C=O group absorption maximum, and fourth C=O group absorption maximum or a combination of at least two of them is a C=O group absorption maximum, in that the C=O groups included are functional groups selected from the group consisting of carboxylic acid groups, a salt of carboxylic acid groups, carboxylic anhydride groups, or a combination of at least two of these.
[0017] An embodiment 11 of the sheet-shaped composite 1 according to the present invention is configured according to any of the embodiments 1 to 9, in which an element selected from the group consisting of the first absorption maximum of group C =O, the second group C=O absorption maximum, the third group C=O absorption maximum, and the fourth group C=O absorption maximum, or a combination of at least two of them is an absorption maximum. a functional group, where the functional group is a repeating unit based on a monomer selected from the group consisting of acrylic acid, acrylic acid salt, methacrylic acid, methacrylic acid salt, acrylic acid ester, maleic acid and maleic anhydride, or a combination of at least two of these.
[0018] The above monomers are preferably used as comonomers together with a main monomer, preferably with an unsaturated hydrocarbon, preferably with alpha-olefin, preferably alpha-olefin selected from the group consisting of ethylene, propylene, 1-butylene, 1-pentene, 1-hexene, 1-octene, 1-nonene or a combination of at least two of these, specifically preferably ethylene or propylene, and especially preferably ethylene. It is further preferred that the polymer consists of 50% by weight or more, preferably 70% by weight or more, and specifically preferably 85% by weight or more of the main monomer, based, respectively, on the polymer, and even less than 50% by weight, preferably less than 30% by weight and specifically preferably less than 15% by weight of the comonomer, based respectively on the polymer.
[0019] An embodiment 12 of the sheet-shaped composite 1 according to the present invention is designed according to any of the previous embodiments, wherein the inner polymer layer contains at least 30% by weight, preferably at least 40% by weight, more preferably at least 50% by weight, more preferably at least 60% by weight, more preferably at least 70% by weight, and most preferably at least 75% by weight based on the total weight of the inner polymer layer of a polymer produced by means of a metallocene catalyst.
[0020] An embodiment 13 of the composite in sheet form 1 is designed according to any of the previous embodiments, wherein the inner polymer layer comprises a blend containing a polymer produced by means of a metallocene catalyst and an additional polymer. An additionally preferred polymer is polyethylene (PE). Preferred PE is LDPE. Preferably, the blend comprises the additional polymer from 1 to 70% by weight, preferably from 1 to 50% by weight, more preferably from 1 to 40% by weight, more preferably from 10 to 30% by weight, based on, respectively, on the total weight of the mixture.
[0021] An embodiment 14 of the sheet-shaped composite 1 is designed according to any of the previous embodiments, wherein the vehicle layer preferably comprises a material selected from the group consisting of cardboard, cardboard and paper, or a combination of at least two of these.
[0022] An embodiment 15 of the sheet-shaped composite 1 is designed according to any of the previous embodiments, wherein the barrier layer preferably comprises a material selected from the group consisting of plastic, metal and metal oxide, or a combination of at least two of these. A preferable metal is aluminum. A preferable plastic is EVOH, polyamide, or a combination of both.
[0023] An embodiment 16 of the sheet-shaped composite 1 is designed according to any of the previous embodiments, wherein the vehicle layer comprises at least one hole, wherein the hole is covered by at least the vehicle layer and at least the inner polymer layer as hole covering layers. Preferably, the hole is additionally covered with the adhesion promoting layer, the polymeric outer layer, or both.
[0024] An embodiment 17 of the composite in sheet form 1 is designed according to any of the previous embodiments, in which the first distance is greater, preferably by a factor in the range of 1.1 to 5, more preferably in the range of 1 .2 to 4, more preferably in the range of 1.3 to 3.5, than the layer thickness of the inner polymer layer. Preferably, the first distance is the layer thickness of the adhesion promoting layer.
[0025] An embodiment 18 of the sheet-shaped composite 1 is designed according to any of the previous embodiments, wherein the sheet-shaped composite is wound onto a spool containing at least two, preferably at least three, most preferably at least four, more preferably at least five, more preferably at least ten, and most preferably at least fifteen layers of the composite in sheet form. In the process, the sheet-shaped composite is preferably formed in one piece. The sheet-shaped composite is preferably wound along the cross section of the coil in a spiral pattern.
[0026] A contribution to meet at least one of the objectives of the present invention provides an embodiment 1 of a method 1, which comprises, as process steps: a. providing composite precursor, which comprises, as layers of a sequence of layers: i. an outer polymer layer; ii. a conductive layer following the outer polymer layer; and iii. a barrier layer following the vehicle layer; B. overlaying the adhesion promoting layer over the barrier layer on an opposite side to the vehicle layer; and c. overlaying an inner polymer layer over the adhesion promoting layer on an opposite side to the barrier layer; wherein the adhesion-promoting layer comprises an outer surface of the adhesion-promoting layer and an inner surface of the adhesion-promoting layer; wherein the outer surface of the adhesion promoting layer: A. is adjacent to the barrier layer; and B. is characterized by first C=O group absorption maxima; wherein the inner surface of the adhesion promoting layer: I. is adjacent to the inner polymer layer; II. is characterized by second C=O group absorption maximum; III. it has a first distance to the outer surface of the adhesion-promoting layer; where the first C=O group absorption maximum is higher than the second C=O group absorption maximum. A preferable outer polymer layer is formed or arranged, or both, according to an embodiment of the sheet-shaped composite 1. A preferable carrier layer is formed or arranged, or both, according to an embodiment of the sheet-shaped composite. sheet 1. A preferable barrier layer is formed or arranged, or both, in accordance with an embodiment of the composite in sheet form 1. A preferable adhesion-promoting layer is formed or arranged, or both, in accordance with an embodiment of the composite. in sheet form 1. A preferable inner polymer layer is formed or arranged, or both, according to an embodiment of the sheet-shaped composite 1.
[0027] An embodiment 2 of process 1 according to the present invention is configured according to embodiment 1, wherein the adhesion-promoting layer at first layer layer with second distance from the adhesion-promoting layer from the outer surface has a third maximum of C=O group absorption; where the second distance is 5 to 95% of the first distance; and the third C=O group absorption maximum: a. is lower than the first C=O group absorption maximum; and b. is higher than the second C=O group absorption maximum.
[0028] An embodiment 3 of process 1 according to the present invention is configured according to either embodiment 1 or 2, wherein, in process step (b), process step (c) or both, the Overlay comprises an extrusion.
[0029] An embodiment 4 of process 1 according to the present invention is configured according to any of embodiments 1 to 3, wherein the extrusion in process step (b) comprises a co-extrusion of at least a first polymer melt, second polymer fusion and third polymer fusion; wherein, prior to process step (b), the first polymer melt is produced from a first series of polymer particles, the second polymer melt is produced from a second series of polymer particles, and the third polymer fusion is produced from a third series of polymer particles; wherein a C=O group absorption maximum of the first series of polymer particles is greater than a C=O group absorption maximum of the third series of polymer particles; wherein the C=O group absorption maximum of the third series of polymer particles is greater than a C=O group absorption maximum of the second series of polymer particles. A preferred series of polymer particles is a granulate. Preferably, all series of polymer particles are granulated. Preferably, the first, second and third series of polymer particles are based on functionalized polyolefins that have been obtained by copolymerization of at least one unsaturated hydrocarbon as the main monomer, preferably of at least one alpha olefin, preferably specific of at least an alpha olefin selected from the group consisting of ethylene, propylene, 1-butylene, 1-pentene, 1-hexene, 1-octene, 1-nonene and a combination of at least two of these, specifically preferably ethylene or propylene, of more preferably ethylene and at least one heteroatom-bearing comonomer, preferably at least one ethylenically unsaturated monomer containing at least one functional group selected from the group consisting of a carboxylic acid group, a carboxylic acid group salt, a group of carboxylic anhydride or a combination of at least two of these, more preferably at least one selected comonomer. taken from a group consisting of acrylic acids such as acrylic acid, methacrylic acid, crotonic acid, acrylates, acrylate derivatives or double bond carboxylic anhydrides such as maleic anhydride, and a combination of at least two of these. In this context, it is preferred that the polymer of the first polymer fusion, the polymer of the second polymer fusion and the polymer of the third polymer fusion differ with respect to the content of the comonomer with respect to the main monomer. In this context, it is further preferred that, in process step (b), the first polymer melt is applied over the barrier layer, the third polymer melt is applied over the layer of the first polymer melt and the second polymer melt is applied over the layer of the third polymer melt, wherein the comonomer content with respect to the main polymer monomer is reduced with respect to the first polymer melt to the third polymer melt and the second polymer melt.
[0030] A contribution to meet at least one of the objectives of the present invention provides an embodiment 1 of a composite in sheet form 2, which can be obtained by means of the process according to any of the embodiments 1 to 4.
[0031] A contribution to meeting at least one of the objectives of the present invention provides an embodiment 1 of a container precursor 1, which includes a sheet-shaped composite 1 according to any one of embodiments 1 to 17 or a composite in sheet form 2 according to embodiment 1 thereof, wherein the sheet-shaped composite comprises at least one ply with at least two adjacent ply surfaces, wherein at least a portion of the at least two ply surfaces is connected by a seal with the other corresponding subsection.
[0032] A contribution to meet at least one of the objectives of the present invention provides an embodiment 1 of method 1, which comprises, as process steps: a. providing the sheet-shaped composite 1 according to any of the embodiments 1 to 18 or the sheet-shaped composite 2 according to the embodiment 1 thereof; B. folding the sheet-shaped composite to form a fold with at least two adjacent folded surfaces; and c. joining of at least one subsection of the at least two folded surfaces to the other corresponding subsection by means of sealing.
[0033] An embodiment 2 of the process 2 according to the present invention is configured according to embodiment 1, wherein at least a part of the sheet-shaped composite has a temperature in the range of 10 to 50°C, preferably 15 at 45°C, more preferably 20 to 40°C, during bending. A preferable bending method is cold bending, hot bending, or both.
[0034] An embodiment 3 of process 2 according to the present invention is configured according to either embodiment 1 or 2, in which the sealing is performed by selecting one from the group consisting of irradiation, contact with material hot solid, introduction of mechanical vibration and contact with hot gas, or a combination of at least two of these. Hot solid material preferably has a temperature above the melting temperature of the sealing agent.
[0035] An embodiment 4 of process 2 according to the present invention is designed according to any of embodiments 1 to 3, wherein the sheet-shaped composite of process step (a) has at least one crease and, in the process step (b), the fold is carried out along the crease. Preferably, the sheet-shaped composite comprises at least two, preferably at least three, more preferably at least four and most preferably at least ten creases.
[0036] A contribution to the realization of at least one of the objectives of the present invention provides an embodiment 1 of a container precursor 2, obtainable by means of the process 2 according to any of the embodiments 1 to 4.
[0037] A contribution to meeting at least one of the objectives of the present invention provides an embodiment 1 of a closed container 1, wherein the container comprises the sheet-shaped composite 1 according to any of its embodiments 1 to 17 or the composite in sheet form 2 according to its folded realization 1.
[0038] A contribution to the realization of at least one of the objectives of the present invention provides an embodiment 1 of a process 3, comprising as process steps: a. providing the container precursor 1 according to its embodiment 1 or the container precursor 2 according to its embodiment 1; and b. closing the container precursor by means of a closing tool.
[0039] An embodiment 2 of process 3 according to the present invention is designed according to embodiment 1, in which the container precursor is filled with a food product before closure. It is preferable that the container precursor is a tubular structure with fixed longitudinal seam. This tubular structure is laterally compressed, clamped, detached and formed into an open container by means of folding, sealing or gluing. The food product may already be filled in the container before fixing and before separating and folding, forming the bottom.
[0040] A contribution to the realization of at least one of the objectives of the present invention provides an embodiment 1 of a container 2, which can be obtained by means of the process 3 according to any of its embodiments 1 or 2.
[0041] A contribution to the realization of at least one of the objectives of the present invention provides an embodiment 1 for use 1 of the composite in sheet form 1 according to any of its embodiments 1 to 18, or of the composite in sheet form. according to its realization 1 for manufacturing containers.
[0042] A contribution to the realization of at least one of the objectives of the present invention provides an embodiment 1 for use 2 of the container 1 according to its embodiment 1 or of the container 2 according to its embodiment 1 for introducing food product in the container. Layer Sequence:
[0043] The layers of the layer sequence are joined together. The term “united” or “composite” used herein includes the adhesion of two objects that go beyond the forces of attraction of Van der Waals. Unless otherwise indicated, in the layer sequence, these layers can follow each other indirectly, ie with one or at least two intermediate layers, or directly, ie without intermediate layers. If the layers or surfaces are adjacent to each other, however, there are no additional layers between those layers or surfaces. In the case of the composite in sheet form, this means, for example, that the barrier layer is directly adjacent to and therefore directly joined to the adhesion-promoting layer. Furthermore, the outer polymer layer can be directly joined to the carrier layer, but there can also be additional objects between them, for example in the form of additional polymer layers, where a direct joining is preferable. The expression "comprising a sequence of layers", as used above, indicates that the specified layers are at least to be present in the composite according to the present invention in the specified order. This expression does not necessarily indicate that these layers are directly adjacent to each other. Polymer layers:
[0044] Next, the expression "polymer layer" designates the outer polymer layer and the inner polymer layer. A preferable polymer of the outer polymer layer or the inner polymer layer is polyolefin. Polymer layers can comprise additional components. The polymer layers are preferably introduced or applied to the composite material in sheet form by means of an extrusion process. The additional components of the polymer layers are preferably components which do not impair the polymer melting behavior during their application in layer form. Additional components can be, for example, inorganic compounds, such as metal salts or other plastics, such as other thermoplastic materials. It is also conceivable, however, that the additional components are fillers or pigments, such as soot or metallic oxides. Suitable thermoplastic materials for the additional components are particularly those that are easy to apply due to their good extrusion behavior. Among them, polymers obtained by means of chain polymerization are suitable, particularly polyester or polyolefins, where cyclic olefin copolymers (COC), polycyclic olefin copolymers (POC), particularly polyethylene and polypropylene, are particularly preferable and polyethylene is of top preference. Among polyethylenes, HDPE, MDPE, LDPE, LLDPE, VLDPE and PE, as well as blends of at least two of them, are preferable. It is also possible to use mixtures of at least two thermoplastic materials. Appropriate polymer layers have melt flow rate (MFR) in the range of 1 to 25 g/10 min, preferably in the range of 2 to 20 g/10 min and preferably specifically in the range of 2.5 to 15 g /10 min, and density in the range of 0.890 g/cm3 to 0.980 g/cm3, preferably in the range of 0.895 g/cm3 to 0.975 g/cm3 and, more preferably, in the range of 0.900 g/cm3 to 0.970 g/cm3 . The polymer layers preferably have at least a melting temperature in the range from 80 to 155 °C, preferably in the range from 90 to 145 °C, and specifically preferably in the range from 95 to 135 °C. Preferably, the sheet-shaped composite between the barrier layer and the carrier layer comprises a polymer layer, preferably a polyolefin layer, preferably a polyethylene layer. More preferably, the composite precursor comprises a polymer layer between the barrier layer and the carrier layer, preferably a polyolefin layer, preferably a polyethylene layer. The above specifications with reference to polymer layers also apply to the polymer layers of the composite and the composite precursor. Outer polymer layer:
[0045] For the outer polymer layer, all polymers considered appropriate by those skilled in the art can be used for the composite in sheet form. The outer polymer layer, which normally has a layer thickness in the range of 5 to 25 µm, specifically preferably in the range of 8 to 20 µm and more preferably in the range of 10 to 18 µm, particularly comprises thermoplastic materials. In this context, preferred thermoplastic polymers are particularly those having a melting temperature in the range from 80 to 155 °C, preferably in the range from 90 to 145 °C and especially preferably in the range from 95 to 135 °C.
[0046] Optionally, the outer polymer layer may also comprise an inorganic filler in addition to the thermoplastic polymer. All solid materials considered appropriate by those skilled in the art can be used as an inorganic filler, preferably particular solids that lead, among others, to increased heat distribution within the plastic and, therefore, better sealing capacity of the plastic. The mean particle sizes determined by means of sieve analysis (D50) of the inorganic solids are preferably in the range of 0.1 to 10 µm, preferably in the range of 0.5 to 5 µm and especially preferably in the range from 1 to 3 µm. Metal salts or oxides of divalent or tetravalent metals should preferably be considered as inorganic solids. Sulphates or carbonates of calcium, barium or magnesium or titanium dioxide, preferably calcium carbonate, can be given as examples. In this context, however, it is preferable that the outer polymer layer comprises at least 60% by volume, preferably at least 80% by volume, and especially preferably at least 95% by volume of thermoplastic polymer, based respectively on the outer polymer layer.
[0047] Polymers obtained by means of chain polymerization, particularly polyolefins, in which cyclic olefin copolymers (COC), polycyclic olefin copolymers (POC) and preferably polyethylene and polypropylene are particularly suitable as thermoplastic polymers for the polymer layer external. Most preferably, the outer polymer layer comprises polyethylene. The melt flow rates (MFR) determined by means of DIN 1133 (190°C/2.16 kg) of polymers which may also be present in the form of a mixture of at least two thermoplastic polymers are preferably in the range of 1 at 25 g/10 min, preferably in the range of 2 to 9 g/10 min and especially preferably in the range of 3.5 to 8 g/10 min.
[0048] Among polyethylenes, HDPE, MDPE, LDPE, LLDPE and PE, as well as mixtures of at least two of these, are preferable for the composite according to the present invention. The MFR of these polymers determined by means of DIN 1133 (190 °C/2.16 kg) are preferably in the range of 3 to 15 g/10 min, preferably in the range of 3 to 9 g/10 min and preferably special, in the range of 3.5 to 8 g/10 min. With respect to the outer polymer layer, it is preferable to use polyethylenes with density (according to ISO 1183-1: 2004) in the range of 0.912 to 0.950 g/cm3, MFR in the range of 2.5 to 8 g/10 min and temperature melting temperature (according to ISO 11357) in the range of 96 to 135 °C. Additional preferred polyethylenes with respect to the outer polymer layer preferably have density (according to ISO 1183-1: 2004) in the range of 0.900 to 0.960 g/cm3. Preferably, the outer polymer layer comprises LDPE in the range of 50 to 95% by weight or preferably in the range of 60 to 90% by weight or preferably in the range of 70 to 85% by weight with respect to the total weight of the outer polymer layer. The outer polymer layer diffuses in its main expansion direction in sheet form, towards the composite in sheet form. One of the surfaces of the main expansion direction thus forms the surface of the outer polymer layer and the opposite surface, the lower surface of the outer polymer layer. The upper surface and the lower surface of the outer polymer layer are preferably arranged parallel to each other. Furthermore, the upper surface and the lower surface may extend, at least in part of the expansion of the outer polymer surface, at an angle to each other, preferably less than 90°, preferably less than 45° or, preferably, less than 20th. Inner polymer layer:
[0049] The inner polymer layer is based on thermoplastic polymers, as described initially for the outer polymer layer, wherein the inner polymer layer may, like the outer polymer layer, comprise a particulate solid inorganic material. Preferably, however, the inner polymer should comprise a thermoplastic polymer in an amount of at least 70% by weight, preferably at least 80% by weight and especially preferably at least 95% by weight with respect to the total weight of the polymer layer internal.
[0050] It is further preferable that the inner polymer layer comprises at least 30% by weight, specifically preferably at least 40% by weight and more preferably at least 50% by weight with respect to the total weight of the polymer layer internal of a polyolefin produced using a metallocene catalyst, preferably polyethylene produced using a metallocene catalyst (mPE). It is further preferred that the inner polymer layer comprises mLLDPE.
[0051] Preferably, the polymer or polymer blend of the inner polymer layer should have a density (according to ISO 1183-1: 2004) in the range of 0.900 to 0.930 g/cm3, preferably it specifies in the range of 0.900 to 0.920 g/cm3 and preferably higher in the range of 0.900 to 0.910 g/cm3. The MFR (ISO 1133, 190°C/2.16 kg) is preferably in the range from 4 to 17 g/10 min, especially preferably in the range from 4.5 to 14 g/10 min and preferably higher , in the range of 6.5 to 10 g/10 min. Polymer produced by means of a metallocene catalyst:
[0052] A polymer produced by means of a metallocene catalyst is preferably a polyolefin produced by means of a metallocene catalyst, preferably polyethylene (mPE) produced by means of a metallocene catalyst. Preferred mPE is mLLDPE. Vehicle layer:
[0053] The vehicle layer of the container according to the present invention may conventionally be made of any material that apparently is suitable for those skilled in the art for this purpose and has adequate strength and rigidity to provide stability to the container, to the extent that that, in the full state, the container essentially retains its shape. In addition to a number of plastics, vegetable-based fibrous substances are preferred, particularly celluloses, preferably sized, leached and/or unleached celluloses, where paper and paperboard are particularly preferred. The weight per square meter of the vehicle layer is preferably in the range of 120 to 450 g/m2, specifically preferably in the range of 130 to 400 g/m2 and most preferably in the range of 150 to 380 g/m2. A preferred board generally consists of one or more layers and may be coated on one or both sides with one or more top coats. A preferred board also contains a residual moisture content of less than 20% by weight, preferably from 2 to 15% by weight and specifically preferably from 4 to 10% by weight with respect to the total weight of the board. A particularly preferred card consists of several layers. Specifically preferably, the card has, on the surface facing the environment, at least one and, specifically preferably, however, at least two layers of an upper layer, which is known to those skilled in the art as "coating". In papermaking, "coating" mainly describes liquid phases that contain solid inorganic particles, preferably solutions that contain chalk, gypsum or clay, which are applied to the surface of the board. A preferred card also has a Scott Bond value in the range from 100 to 360 J/m2, preferably from 120 to 350 J/m2 and more specifically from 135 to 310 J/m2. Through the areas indicated above, it is possible to provide a composite from which a container with a high degree of impermeability can be folded easily and with low tolerances.
[0054] Preferably, at least one barrier layer, more preferably the outer polymer layer, the inner polymer layer or both, or preferably all polymer layers have a melting temperature below the melting temperature of the layer. barrier. This is especially true if the barrier layer is composed of polymer. In this way, the melting temperatures of at least one, preferably at least two polymer layers, particularly of the inner polymer layer and the outer polymer layer, differ from the melting temperature of the barrier layer by at least 1 K, from specific preference in at least 10 K, more preferably still in at least 50 K, and more preferably in at least 100 K. The temperature difference should preferably be selected only so high that the barrier layer does not melt. , particularly fusion of the plastic barrier layer during bending. Barrier layer:
[0055] As a barrier layer, any material that seems suitable for this purpose to those skilled in the art can be used, which has sufficient barrier effect, particularly against oxygen. The barrier layer is preferably selected from: a. a plastic barrier layer; B. a metallic layer; ç. a metal oxide layer; or d. a combination of at least two of a through c.
[0056] If the barrier layer according to alternative (a) is a plastic barrier layer, it preferably comprises at least 70% by weight, specifically preferably at least 80% by weight and preferably higher, at least at least 95% by weight of at least one plastic that is known to those skilled in the art for this purpose, particularly due to the aroma and gas barrier properties that are suitable for packaging containers. Possible plastics, particularly thermoplastic plastics, at present are plastics that carry N or O, both singly and in mixtures of two or more. According to the present invention, it may be advantageous for the plastic barrier layer to have a melting temperature in the range of more than 155 to 300°C, preferably in the range of 160 to 280°C and more specifically in the range of 170 to 270°C.
[0057] The plastic barrier layer preferably has surface weight in the range of 2 to 120 g/m2, preferably in the range of 3 to 60 g/m2, preferably specific in the range of 4 to 40 g/m2 and, additional preferably from 6 to 30 g/m2. More preferably, the plastic barrier layer can be obtained by means of melting, such as by means of extrusion, particularly extrusion of layers. The plastic barrier layer can also preferably be introduced into the composite in sheet form by means of lamination. A metallic sheet is preferably incorporated into the composite in sheet form. According to another embodiment, plastic barrier layers can also be selected which can be obtained by separating a solution or dispersion of plastics.
[0058] Suitable polymers are preferably those having weight average molecular weight determined by gel permeation chromatography (GPC) using light scattering in the range of 3 x 103 to 1 x 107 g/mol, preferably in the range of 5 x 103 to 1 x 106 g/mol and preferably in the range of 6 x 103 to 1 x 105 g/mol. Polyamide (PA), polyethylene vinyl alcohol (EVOH) or one of their mixtures in particular are considered to be suitable polymers.
[0059] Polyamides comprise all PAs which apparently are suitable for those skilled in the art for use in accordance with the present invention, particularly PA 6, PA 6.6, PA 6.10, PA 6.12, PA 11, PA 12 or a mixture of at least two of them, wherein PA 6 and PA 6.6 are particularly preferred and PA 6 is additional preferably. PA 6, for example, is commercially available under the trade names Akulon®, Durethan® and Ultramid®. Amorphous polyamides such as MXD6, Grivory® and Selar® PA, for example, are also suitable. It is also preferred that the PA has a density in the range of 1.01 to 1.40 g/cm3, preferably in the range of 1.05 to 1.30 g/cm3 and more preferably in the range of 1.08 to 1 .25 g/cm3. It is also preferable for the PA to have a viscosity number in the range 130 to 185 ml/g and preferably in the range 140 to 180 ml/g.
[0060] Possible EVOHs are all EVOHs that appear to be suitable for those skilled in the art for use in accordance with the present invention. Examples include those commercially obtainable under the trade names EVAL®, marketed by EVAL Europe N.V., Belgium, in a number of different embodiments, such as the EVAL® F104B and EVAL® LR171B varieties. Preferred EVOHs have at least one, two, several or all of the following properties: - ethylene content in the range from 20 to 60 mol%, preferably from 25 to 45% mol; - density in the range from 1.0 to 1.4 g/cm3, preferably from 1.1 to 1.3 g/cm3; - melting point in the range from more than 155 to 235 °C, preferably from 165 to 225°C; - MFR value (210 °C/2.16 kg, if TS(EVOH) < 230 °C; 230 °C/2.16 kg, if 210 °C < TS(EVOH) < 230 °C) in the range of 1 to 25 g/10 min, preferably 2 to 20 g/10 min; and - oxygen permeation rate in the range of 0.05 to 3.2 cm3^20 μm/mzdia^atm, preferably in the range of 0.1 to 1 cm3^20 μm/mzdia^atm.
[0061] According to alternative b, the barrier layer is a metallic layer. In principle, all metals known to those skilled in the art that can create a high degree of impermeability to light and oxygen are suitable as a metallic layer. According to a preferred embodiment, the metallic layer can be present in the form of a metallic sheet or as a deposited layer, for example after physical vapor deposition. The metallic layer is preferably a continuous layer. According to a further preferred embodiment, the metallic layer has a thickness in the range from 3 to 20 µm, preferably in the range from 3.5 to 12 µm and, specifically preferably, in the range from 4 to 10 µm.
[0062] The selected metals are preferably aluminum, iron or copper. An iron layer may preferably be a steel layer, for example in film form. The metallic layer is preferably an aluminum layer. The aluminum layer can conveniently consist of an aluminum alloy, such as AlFeMn, AlFe1.5Mn, AlFeSi or AlFeSiMn. Its purity is normally 97.5% or more, preferably 98.5% or more, where the two numbers refer to the total aluminum layer. In a special embodiment, the metallic layer consists of an aluminum foil. Appropriate aluminum sheets have elasticity of more than 1%, preferably more than 1.3% and specifically preferably more than 1.5% and tensile strength of more than 30 N/mm2, preferably more than 40 N/mm2 and, specifically preferably, greater than 50 N/mm2. In the pipette test, suitable aluminum sheets have a droplet size of more than 3 mm, preferably more than 4 mm, and more specifically preferably more than 5 mm. Suitable alloys for the production of aluminum layers or sheets are commercially available under the configurations EN AW 1200, EN AW 8079 or EN AW 8111, marketed by Hydro Aluminum Deutschland GmbH or Amcor Flexibles Singen GmbH. , an adhesion promoting layer may be provided on one and/or both sides of the metal sheet, between the metal sheet and an adjacent polymer layer.
[0063] According to alternative c, a metal oxide layer can preferably be selected as the barrier layer. All metal oxide layers that are familiar to those skilled in the art and seem suitable to achieve a barrier effect against light, vapor and/or gases are considered as metal oxide layers. Metal oxide layers based on the metals mentioned above (aluminium, iron or copper), as well as metal oxide layers based on silicon oxide compound or titanium, are particularly preferred. A metal oxide layer is generated, for example, by coating a plastic layer, such as an oriented polypropylene film, with metal oxide by means of vapor deposition. A preferred process is physical vapor deposition.
[0064] According to a further preferred embodiment, the metallic layer of the metal oxide layer can be a composite layer constructed with one or more plastic layers with a metallic layer. This layer is generated, for example, by coating a plastic layer, such as an oriented polypropylene film, with metal by means of vapor deposition. A preferred process is physical vapor deposition. Opening hole/auxiliary:
[0065] To facilitate the opening capability of the container or the sheet-shaped composites according to the present invention, the carrier layer may comprise at least one hole. In a special embodiment, the hole is covered by at least the barrier layer and at least the first polyolefin layer as hole covering layers. A composite in sheet form is preferred, in which the carrier layer comprises at least one hole, which is covered by at least the barrier layer, at least the inner polymer layer and the adhesion promoting layer. It is preferred at present that the orifice covering layers are joined together at least partially, preferably up to at least 30%, specifically preferably up to at least 70% and especially preferably up to at least 90% of the surface formed by the orifice . In a specific embodiment, it is preferable for the hole to penetrate the entire composite and be covered by a hole sealing opening or closing device. With regard to a first preferred embodiment, the hole provided in the vehicle layer can be shaped appropriately for different closures, straws or auxiliary opening devices known to those skilled in the art. Typically, opening a sheet-shaped composite or a container with a sheet-shaped composite is mainly carried out by at least partially destroying the hole covering layers covering the hole. This destruction can be conducted by cutting, pressing on the container or withdrawing from the container. Destruction can be conducted by means of an openable closure or straw that is pushed through the hole covering layers that cover the hole, normally disposed above the hole.
[0066] According to a further preferred embodiment, the carrier layer of the composite has a series of holes in the form of perforations, wherein the individual layers are covered at least by the barrier layer and the inner polymer layer as hole covering layers . A container produced with this composite can then be opened by tearing it along the perforation. These drilling holes are preferably generated by means of a laser. The use of laser beams is particularly preferred when a metallic foil or foil is used as a barrier layer. It is also possible for drilling to be introduced using mechanical drilling tools, particularly those with blades.
[0067] According to a further preferred embodiment, the sheet-shaped composite is subjected to heat treatment in the area of at least a single hole; in the case of several holes present in the form of a perforation in the vehicle layer, it is particularly preferable that you also carry out this heat treatment around the end of the hole. The heat treatment can be carried out by means of radiation, hot gas, solid thermal contact, mechanical vibrations, preferably by means of ultrasound or a combination of at least two of these three measures. Preferably, the heat treatment is carried out by means of radiation, preferably electromagnetic radiation and, more specifically, by means of electromagnetic induction or also by means of hot gas. The optimal operating parameters to be selected in each case are known to the average person skilled in the art.
[0068] In the case of radiation, any type of radiation suitable for softening plastics known to those skilled in the art can be considered. The preferred types of radiation are IR, UV and microwave rays. The preferred modes of vibration are ultrasonic. In the case of IR rays, which are also used for IR welding of sheet-shaped composites, the wavelengths are in the range of 0.7 to 5 µm. Furthermore, it is possible to use laser beams in the wavelength range from 0.6 to less than 1.6 µm. With regard to the use of IR rays, these are produced by various suitable emitters which are known to those skilled in the art. Shortwave emitters in the range of 1 to 1.6 µm are preferably halogen lamps. Medium wave emitters in the range over 1.6 to 3.5 µm are, for example, foil emitters. Quartz heaters are often employed as emitters of long waves in the range of more than 3.5 µm. Lasers are used with increasing frequency. Diode lasers are therefore used in the wavelength range from 0.8 to 1 μm, Nd:YAG lasers at around 1 μm and CO2 lasers at around 10.6 μm. High frequency methods with a frequency range of 10 to 45 MHz, often in a power range of 0.1 to 100 kW, are also used.
[0069] In the case of ultrasound, the following treatment parameters are preferred: P1: frequency in the range from 5 to 100 kHz, preferably in the range from 10 to 50 kHz, and especially preferably in the range from 15 to 40 kHz; P2: amplitude in the range of 2 to 100 μm, preferably in the range of 5 to 70 μm and especially preferably in the range of 10 to 50 μm; P3: vibration period (as the period of time in which a vibrating body, such as a sonotrode or inductor, acts on the sheet-shaped composite with vibrating contact) in the range of 50 to 1000 msec, preferably in the range of 100 to 600 msec, and especially preferably in the range of 150 to 300 msec.
[0070] For proper selection of radiation or vibration conditions, it is convenient to take into account the intrinsic resonances of the plastic and select frequencies close to them.
[0071] Heating through contact with a solid material can be conducted, for example, using a hot plate or heating mold that is in direct contact with the sheet-shaped composite and which transfers heat to the shaped composite of sheet. Hot air may be directed to the sheet-shaped composite by nozzles or outlet openings of suitable fans, or one of their combinations. Contact heating and hot gas are often used simultaneously. In this way, for example, a holding device for a tube formed by the sheet-shaped composite with openings suitable for the flow of hot gas can heat the sheet-shaped composite by contacting the wall of the holding device and the hot gas. In addition, tube heating can also be achieved by securing the tube with a tube support and gas flow to the areas of the tube to be heated by means of one, two or more hot gas nozzles provided in the tube support. roof. Adherence promoting layer:
[0072] All plastics suitable for creating firm bonding to the surface of the other corresponding layer by means of functionalization, by means of appropriate functional groups by the creation of ionic bonds or covalent bonds, or both types of bonds, can be considered adhesion agents . Preferably, they are functionalized polyolefins, which have been obtained by copolymerizing at least one unsaturated hydrocarbon as the main monomer, preferably at least one alpha olefin, more preferably at least one alpha olefin selected from the group consisting of ethylene, propylene, 1 -butylene, 1-pentene, 1-hexene, 1-octene, 1-nonene and a combination of at least two of these, specifically preferably ethylene or propylene and especially preferably ethylene, with at least one monomer containing a heteroatom , preferably at least one ethylenically unsaturated monomer containing at least one functional group selected from the group consisting of a carboxylic acid group, carboxylic acid group salt, carboxylic anhydride group and a combination of at least two of these, preferably specifies a comonomer selected from the group consisting of acrylic acids, such as acrylic acid, methacrylic acid. yl, crotonic acid, acrylates, acrylate derivatives or double bond carboxylic anhydrides such as maleic anhydride and a combination of at least two of these. Among these, graft polymer of polyethylene maleic anhydride (EMAH), copolymers of ethylene and acrylic acid (EAA) or copolymers of ethylene and methacrylic acid (EMAA) are preferred, which are sold, for example, under the trade names Bynel® and Nucrel® 0609HSA by DuPont or Escor® 6000ExCo by ExxonMobile Chemicals. The layer thickness of the adhesion promoting layer LTapl in the sheet-shaped composite is preferably higher than the layer thickness of the inner polymer layer LTipl. It is particularly preferred that the layer thickness of the LTapl adhesion promoting layer is higher than the layer thickness of the LTipl polymer inner layer by a factor in the range 1.1 to 5 or, preferably, in the range 1.2 to 4, preferably in the range from 1.3 to 3.5. The total thickness of the adhesion promoting layer and the inner polymer layer is preferably in the range of 10 to 120 µm, preferably in the range of 15 to 80 µm, and especially preferably in the range of 18 to 60 µm. The preferred layer thicknesses of the two individual layers result from the factors mentioned above.
[0073] According to the present invention, the absorption maxima of group C=O from the outer surface of the adhesion-promoting layer to the inner surface of the adhesion-promoting layer are decreasing. The value of the C=O group absorption maxima is preferably described as a monotonically decreasing function of the distance to the outer surface of the adhesion-promoting layer. Preferred monotonically decreasing function is a step function. Another preferred monotonically decreasing function is a strictly monotonically decreasing function. The slope of the strictly monotonically decreasing function is preferably less negative with increasing distance from the outer surface of the adhesion promoting layer.
[0074] It is preferable that a first peak of the adhesion promoting layer, or one of the polymers included therein, or the adhesion promoting material is in the wavenumber range of 1750 to 1650 cm-1. This is generated by the oscillation of the C=O groups. It is further preferred that the polymer described above exhibits additional peak corresponding to the CH2 oscillation in the wavenumber range of 1400 to 1500 cm-1. The C=O group absorption maximum of each spectrum is determined as the ratio of the peak height in the wavenumber range 1750 to 1650 cm-1 to the peak height in the wavenumber range 1400 to 1500 cm-1. The C=O oscillation is therefore patterned on the CH2 oscillation of the same spectrum. This standardized C=O oscillation is the maximum dimensionless C=O group absorption to be determined. Furthermore, from the ratio between the peak height of the oscillation of C=O groups and the peak height of the oscillations of the CH2 groups, one can derive the ratio between the number of repeating units in the polymer that are based on ( s) comonomer(s) and the amount of repeating units in the polymer that are based on the main monomer(s). The smaller the C=O group absorption peak, the lower the proportion of repeating units based on comonomer compared to repeating units based on the main monomer in the corresponding polymer or adhesion-promoting layer. The same is true for the polymer and this also applies to the adhesion promoting layer. In particular, the lower the maximum C=O group absorption, the lower the proportion of repeating units based on comonomer compared to repeating units based on the main monomer in the adhesion-promoting layer. Preferably, the following applies: the proportion of the repeating units based on the comonomer compared to the repeating units based on the main monomer of the adhesion promoting chain is reduced along a straight line of the outer surface of the adhesion promoting layer. adhesion to the inner surface of the adhesion promoting layer. With this reduction, it is preferable that the inner surface of the adhesion promoting layer has a repeating unit based on comonomer. With this reduction, it is also preferred that this reduction be affected in two, three, four, five, six or more steps. The indications in this text with reference to the maximum absorption of the C=O group with respect to its reduction of the adhesion-promoting layer apply properly in this case.
[0075] Preferably, the adhesion promoting layer is obtained by means of co-extrusion. Preferred co-extrusion is an extrusion with the simultaneous use of at least two, preferably at least three and preferably at least four extruders. Preferably, the adhesion-promoting layer is obtained by applying at least two different adhesion-promoting materials, also called adhesion-promoting materials, in an application step on the surface of the barrier layer, so that they mix with the less partially, together forming the adhesion-promoting layer. Preferably, therefore, at least two adhesion-promoting materials are applied simultaneously to the corresponding surface. Further preferably are all adhesion-promoting materials with which the adhesion-promoting layer is formed during the formation of the adhesion-promoting layer in a molten state. Preferably, the adhesion promoting materials can be contacted together prior to application to the surface, preferably by forming a laminar structure of the adhesion promoting materials. Combining the various metals in a molten state, at least a partial mixture of the various materials is achieved. This differentiates the adhesion promoting layer applied in this way from layers that are applied one after the other, in which one of the layers has already been hardened. Preferably, a gradient of C=O group absorption maxima is created by applying the at least two adhesion-promoting layer materials to the adhesion-promoting layer across its layer thickness. By applying at least two adhesion-promoting layer materials in the molten state, the two materials are mixed together so that they do not form two individual layers, but can be considered as a single layer together. To form the adhesion promoting layer, preferably at least two, preferably at least three, more preferably at least four, most preferably at least five polymer fusions are directed to a feed block, placed in contact with each other by means of the formation of a laminar structure of the polymer fusions and then applied in a molten state and in contact on the barrier layer. The at least two adhesion-promoting layer materials are preferably the functionalized polyolefins described above which have been obtained by copolymerizing at least one unsaturated hydrocarbon as the main monomer and at least one comonomer containing a heteroatom, wherein the promoter layer materials of adhesion differ from each other with respect to the content of the comonomer with respect to the main monomer. To ensure that the maximum C=O group absorption of the adhesion-promoting layer is reduced from the outer surface of the adhesion-promoting layer towards the inner surface of the adhesion-promoting layer, in the co-extrusion process, the at least two layer materials Adhesion promoters are applied in such a way that the order of application of these materials depends on the comonomer content in the functionalized polyolefin of the corresponding adhesion promoting layer material. In so doing, the functionalized polyolefin that contains the highest comonomer content is preferably applied directly onto the barrier layer, followed by the additional functionalized polyolefin(s) with increasing comonomer content. reduced, wherein the comonomer content in each case is defined with respect to the content of the main monomer in the functionalized polyolefin of the corresponding layer area. Additional polymer layers:
[0076] Among the above-mentioned layers of the composite according to the present invention, additional adhesion-promoting layers may be present, but also other layers of plastic or polymer, unless otherwise indicated, specifying, for example, that certain layers or surfaces are adjacent to each other. The materials of the additional polymer or plastic layers are preferably the same as those specified for the inner polymer layer or the outer polymer layer. Preferably, the additional adhesion promoting layer is disposed between the vehicle layer and the barrier layer. The additional adhesion promoting layer can be structured in the same way as the adhesion promoting layer or made of other materials. The thickness of the additional adhesion promoting layer is preferably five to fifteen times, preferably seven to thirteen times, more preferably nine to eleven times less than the thickness of the adhesion promoting layer. The material is also preferably selected from the group of materials indicated for the adhesion promoting layer. Preferably, the material of the additional adhesion promoting layer exhibits constant C=O group absorption maxima across the thickness of the layer. The additional adhesion-promoting layer can therefore also have different C=O group absorption maxima in the vehicle layer and the barrier layer, in the form of the adhesion-promoting layer described above. Preferably, the additional adhesion promoting layer has a higher C=O group absorption maximum on the barrier layer side than on the carrier layer side. Furthermore, an additional protective layer can be applied to the side of the outer polymer layer opposite the vehicle layer. Therefore, a polycarbonate layer is preferred as the protective layer. C=O group absorption maximums:
[0077] The ranges of values specified in this document for the first C=O group absorption maximum, the second C=O group absorption maximum and the third C=O group absorption maximum are selected to contribute to solve at least one of the objectives of the present invention. In addition, the value ranges are selected such that the first C=O group absorption maximum, the second C=O group absorption maximum and the third C=O group absorption maximum can always be selected from such that the first group C=O absorption maximum is higher than the second group C=O absorption maximum, the third group C=O absorption maximum is lower than the first group C absorption maximum =O and the third C=O group absorption maximum is higher than the second C=O group absorption maximum. At least one of the first to third C=O group absorption maximum can therefore be freely selected within the predetermined range. The other two must be selected from their corresponding value ranges so that they satisfy the conditions mentioned above. This applies to all value range preference levels. Different levels of preference should not be mixed. The C=O group absorption maximum values should therefore always be selected from the same preferred value ranges. Accession:
[0078] According to the present invention, it is preferred that the adhesion between the carrier layer, the outer polymer layer, the inner polymer layer or the barrier layer, preferably at least two of them, to the next corresponding layer represents at least 0.5N/15mm, preferably at least 0.7N/15mm and more specifically preferably at least 0.8N/15mm. In one embodiment of the present invention, it is preferred that the adhesion between the outer polymer layer and the carrier layer represents at least 0.3 N/15 mm, preferably at least 0.5 N/15 mm, and specifically preferably , at least 0.7 N/15 mm. It is further preferred that the adhesion between the barrier layer and the inner polymer layer represents at least 0.8 N/15 mm, preferably at least 1.0 N/15 mm, and specifically preferably at least 1.4 N/15 mm. It is preferred that the adhesion between the barrier layer and the adhesion promoting layer represents at least 1.8 N/15 mm, preferably at least 2.2 N/15 mm, and specifically preferably at least 2.8 N /15 mm. In a specific embodiment of the sheet-shaped composite, the adhesion between the individual layers is developed so strongly that the adhesion test causes tearing in the vehicle layer in the case of cardboard as a vehicle layer, the so-called fiberboard tear . In an embodiment of the sheet-shaped composite manufacturing process 1 according to the present invention, it is preferable that, for further improvement of the adhesion of two layers adjacent to each other, they are subjected, for example, to surface treatment during the coating. Flame treatment, plasma treatment, corona treatment or ozone treatment, among others, are known to those skilled in the art as suitable processes for surface treatment. However, other processes that cause the formation of functional groups on the surface of the treated layer are also conceivable. In a specific embodiment, at least one of these processes is employed in the lamination of metallic layers, particularly metallic sheets. Polyolefin:
[0079] A preferred polyolefin is a polyethylene, polypropylene or both. Preferred polyethylene is that selected from the group consisting of LDPE, LLDPE, HDPE or a combination of at least two of these. Another preferred polyolefin is m-polyolefin. Suitable polyethylenes have a melt flow rate (MFR) in the range of 1 to 25 g/10 min, preferably in the range of 2 to 20 g/10 min and preferably specifically in the range of 2.5 to 15 g/10 min and density in the range of 0.910 g/cm3 to 0.935 g/cm3, preferably in the range of 0.912 g/cm3 to 0.932 g/cm3 and most preferably in the range of 0.915 g/cm3 to 0.930 g/cm3. m-Polymer:
[0080] m-Polymer is a polymer that is produced using a metallocene catalyst. Metallocene is an organometallic compound in which a central metal atom is disposed between two organic ligands, such as cyclopentadienyl ligands. Preferred M-polymer is an m-polyolefin, preferably m-polyethylene, m-polypropylene or both. Preferred M-polyethylene is selected from the group consisting of m-LDPE, m-LLDPE and m-HDPE or a combination of at least two of these. Extrusion:
[0081] During extrusion, polymers are normally heated to temperatures of 210 to 330 °C, measured on the polymer film melt below the outlet in the extruder nozzle. Extrusion can be conducted by commercially available extrusion tools known to those skilled in the art, such as extruders, screw extruders, feed blocks etc. At the end of the extruder, there is preferably an opening through which the polymer melt is pressed. The opening can be any shape that allows the extrusion of the polymer melt into the composite precursor. The opening can therefore be, for example, square, oval or round. The opening is preferably in the form of a funnel slit. In a preferred embodiment of the process, the application is conducted through a slit. The gap is preferably in the range of 0.1 to 100 m, preferably in the range of 0.5 to 50 m, specifically preferably in the range of 1 to 10 m. Furthermore, the slit is preferably in the range of 0.1 to 20 mm, preferably in the range of 0.3 to 10 mm, more preferably in the range of 0.5 to 5 mm. During the application of the polymer melt, it is preferred that the slit and the composite precursor move with each other. Therefore, a process in which the composite precursor moves with respect to the crack is preferred.
[0082] According to another preferred embodiment of the production process of composite in sheet form according to the present invention, it is preferred that the polymer melt is stretched during application, wherein such stretching is preferably carried out by means of processes of melting, most preferably by means of monoaxial melting processes. For this purpose, the layer is applied by means of a melt extruder on the composite precursor and the layer is applied, still in the molten state, and preferably then stretched in monoaxial direction to obtain orientation of the polymer in that direction. Then, the applied layer is kept cooling for heat shrinkage purposes. In this context, it is particularly preferred that the drawing be carried out through at least the following application steps: b1. discharging the molten polymer in molten film form via at least one extruder nozzle slit at Vdis. discharge velocity; and b2. applying the cast film to the moving composite precursor with respect to the at least one extruder nozzle slit at Vc.p. motion speed; where Vdis < Vc.p. Particularly, Vc.p. is preferably greater than Vdis in factor in the range of 5 to 200, preferably in the range of 7 to 150, more preferably in the range of 10 to 50 and most preferably in the range of 15 to 35. Vc.p. is preferably more than at least 100 m/min, more preferably at least 200 m/min, and preferably more than at least 350 m/min, but not normally above 1300 m/min. After the application of the fusion layer to the composite precursor through the stretching process described above, the fusion layer is kept cooling for heat-shrinking purposes, whereby such cooling is allowed to occur preferably by means of cooling by contact with a surface that it is kept at a temperature in the range of 5 to 50°C, specifically preferably in the range of 10 to 30°C. As described above, after heat shrinkage, it can be particularly advantageous if the sheet-shaped composite is heat treated at least in the area of the at least one hole, in order to cancel the orientation of the polymers.
[0083] According to a further preferred embodiment, the discharged surface is cooled to a temperature below the lowest melting temperature of the polymers provided on its surface or its edges, and then at least the edges of the surface are separated from that surface. Cooling can take place in any way that is familiar and seems appropriate to those skilled in the art for this purpose. The heat shrinkage described above is also preferred at present. Then at least the ends are separated from the surface. The separation can take place in any way that is familiar and seems appropriate to those skilled in the art for this purpose. Separation preferably takes place by means of knives, laser beam, water jet or a combination of the two of these, where the use of knives, particularly knives with scissor-like cutting action, is particularly preferred. Folding of the composite in sheet form:
[0084] With respect to the process according to the present invention 2 for producing a container mold, the folding takes place preferably in a temperature range of 10 to 50 °C, preferably in the range of 15 to 45 °C, and from specific preference, in the range of 20 to 40 °C. This can be achieved if the composite in sheet form has a temperature within the ranges mentioned above. A bending tool, preferably together with the sheet-shaped composite, preferably has a temperature within the range mentioned above. For this purpose, the bending tool has no heat. Conversely, the bending tool, sheet composite or both can be cooled. Furthermore, the bending preferably takes place as cold bending at a maximum temperature of 50 °C and the joining of step (c) preferably takes place in the form of heat shrinkage at a temperature of more than 50 °C, preferably more than 80 °C and , preferably more than 120°C. The conditions defined above and particularly the temperatures also preferably apply in the immediate vicinity of the bend, such as in the shelter of the bending tool. In a further embodiment of the process according to the present invention 2, cold bending or cold bending in combination with heat shrinkage is preferably used at angles formed during bending µ of less than 100°, preferably less than 90°, of specific preferably less than 70° and more preferably less than 50°. Angle μ is formed by two adjacent bend surfaces.
[0085] In the process according to the present invention, "bending" is understood as indicating an operation in which an elongated crease is preferably generated which forms an angle in the folded sheet-shaped composite by means of a bending edge of a bending tool. For this, two adjacent surfaces of a sheet-shaped composite are often further folded together. The fold generates at least two adjacent fold surfaces, which can then be joined, at least in partial regions, to form a container region. According to the present invention, the joining can be carried out by any measure that seems to be appropriate to the person skilled in the art and that allows a joining that is as hermetic to gases and water as possible. Joining can be done by sealing, gluing or a combination of the two measures. In the case of sealing, the union is created by means of a liquid and its solidification. In the case of collage, chemical bonds are formed that create a form of union between the interfaces or surfaces of the two objects to be joined. In the case of sealing or bonding, it is often advantageous that the surfaces to be sealed or bonded are pressed together.
[0086] The sealing temperature is preferably selected so that one or more thermoplastic polymers participating in the sealing, preferably the polymers of the polymer layers, are present in the form of a melt. The sealing temperatures are therefore at least 1K, preferably at least 5K and especially preferably at least 10K above the melting temperature of the corresponding polymer. Furthermore, the sealing temperature should not be selected too high, so as not to unnecessarily overload the polymers with too much force, so that they do not lose their intrinsic material properties.
[0087] In a further embodiment of the process according to the present invention 2, it is preferable that the bending surfaces form an angle μ of less than 90°, preferably less than 45°, and specifically preferably less than 20°. The fold surfaces are often folded to the point where they rest on top of each other at the end of the fold. This is particularly advantageous if the folding surfaces resting on one another are then joined together in order to form the base of the container and the top of the container, which is shaped like an edge or also flat. With regard to the edge configuration, reference may be made, for example, to WO 90/09926 A2. Food products:
[0088] All foods known to experts in the field for human consumption and also animal feed can be food. Preferred foods are liquids above 5°C, such as dairy products, soups, broths and non-carbonated beverages. The container or container mold can be filled in various ways. On the one hand, before filling, the food and the container or container mold can be sterilized separately, as far as possible, by appropriate measures such as treating the container or container mold with H2O2, UV radiation or otherwise suitable high energy radiation, plasma treatment or combination of at least two of these and by heating the food and then filling it in the container or container mold. This type of filling is often called "aseptic filling" and is preferred in accordance with the present invention. In addition to or in place of aseptic filling, heating of the container or container mold after filling it with food, in order to reduce the germ count, is widespread. This is preferably carried out by means of pasteurization or autoclaving. With this procedure, less food and sterile containers or container molds can be used. Container:
[0089] The container according to the present invention can take a number of different forms. However, an essentially cuboid structure is preferred. The container can be completely formed with the composite in sheet form or have a two-part or multi-part structure. In the case of a multi-part structure, it is conceivable that, in addition to the sheet-shaped composite, other materials can also be used, such as plastic, for example, which can be used in particular at the base of the container and at the top of the container. It is preferred, however, that the container is formed to at least 50%, preferably to at least 70% and more preferably to at least 90% of its surface from the sheet-shaped composite. The container may also have a device for emptying the contents. This can be formed from plastic, for example, and attached to the outside of the container. It is also conceivable that this device is integrated into the container by means of direct injection molding. According to a preferred embodiment, the container according to the present invention contains at least one, preferably from 4 to 22 or more ends, especially preferably from 7 to 12 ends. In the context of the present invention, "edges" are sections that are formed by bending a surface. As an example, we can define the elongated contact regions of two wall surfaces of the container as “ends”. In the container, the walls of the container preferably represent the surfaces of the container delimited by the edges. Preferably, the interior of a container according to the present invention contains a food product. Container Precursor:
[0090] A preferred container precursor is shell-shaped, tube-shaped, or both. Another preferred container precursor comprises an open top section or an open bottom section, or both. In a preferred container precursor, the inner polymer layer is turned inward. Measurement methods:
[0091] The following measurement methods were used in the context of the present invention. Unless otherwise indicated, measurements were conducted at an ambient temperature of 25 °C, an atmospheric pressure of 100 kPa (0.986 atm) and a relative humidity of 50%. MFR value:
[0092] The MFR value is measured in accordance with ISO 1133 (at 190 °C and 2.16 kg unless otherwise specified). Density:
[0093] Density is measured in accordance with ISO 1183-1. Melting temperature:
[0094] The melting temperature is determined using the DSC process ISO 11357-1, 5. The calibration of the instrument is conducted according to the manufacturer's specifications, using the following measurements: - indium temperature - onset temperature; - melting temperature of indium; and - zinc temperature - start temperature. PA viscosity number:
[0095] The viscosity number of PA is measured according to ISO 307 standard in 95% sulfuric acid. Oxygen Permeation Rate:
[0096] The oxygen permeation rate is determined in accordance with ISO standard 14663-2, Annex C, at 20 °C and under 65% relative humidity. Card moisture content:
[0097] The moisture content of the board is measured in accordance with ISO 287: 2009. Accession:
[0098] In order to determine the adhesion of two adjacent layers, they are attached to a 90° peel testing device, such as Instron's "German spinning wheel installation" on a rotating drum, which rotates during measurement at 40 mm/min. Samples are pre-cut into 15 mm wide tapes. On one side of the sample, the layers are peeled off from each other and the peeled end is stapled to a pulling device directed vertically upwards. A measuring device is mounted on the traction device in order to determine the traction force. By rotating the drum, the force required to separate the layers from each other is measured. This force corresponds to the adhesion of the layers to each other and is given in N/15 mm. The separation of the individual layers can be achieved mechanically or by means of specific pre-treatment, soaking the sample, for example, for three minutes in 30% acetic acid at 60 °C. C=O group absorption maximum:
[0099] To determine the maximum absorption of the C=O group, measurement is performed by means of infrared-ATR spectroscopy. The. Preparation of the adhesion promoting layer:
[00100] For this purpose, the composite in sheet form, which contains the adhesion promoting layer, is prepared first. A section is created through the composite ply sequence, which is done perpendicular to the ply sequence direction. This is accomplished through a microtome generated cut. B. Preparation of polymer particle series:
[00101] For measuring polymer particles, a smooth surface is required, which is produced by cutting through the polymer particle using a knife. The surface obtained should completely cover the measurement area of the spectroscope. The sample is placed with the cut surface on the measurement surface and firmly pressed onto it. To determine the maximum absorption of the C=O group of a series of polymer particles, ten polymer particles from the series of polymer particles are randomly selected and measured as described herein. Of the ten measurement results, the average is calculated, which represents the result of the series. ç. Infrared-ATR spectroscopy:
[00102] The section plane is analyzed by means of a FT-IR microscope (Thermo Scientific Nicolet® iN® 10 MX Infrared Imaging Microscope from Thermo Fisher Scientific Inc.). In the present case, in the case of measurement on an adhesion-promoting layer, the position of the outer surface of the adhesion-promoting layer is determined by identifying the barrier layer. The ATR spectrum of the sample to be measured at the previously identified position in the wavenumber range from 2000 to 1000 cm-1 with a resolution of 4 cm-1 is recorded. Figure 7, described in more detail below, exemplifies the amount of these spectra for different measurements. The measured spectrum includes the first maximum of the absorption measured in the wavenumber range 1650 to 1750 cm-1. This first maximum is caused by the oscillation of C=O groups. In addition, the spectrum includes an additional maximum in the wavelength range from 1400 to 1500 cm-1. This additional maximum corresponds to the CH2 oscillation. The C=O group absorption maximum is determined as the ratio of the first maximum to the additional maximum. The vibration of C=O is therefore normalized over the oscillation of CH2 from the same spectrum. This standardized C=O oscillation is the maximum dimensionless C=O group absorption to be determined.
[00103] Maximum absorption of group C=O = Imax (1650 - 1750 cm-1) / Imax (1400 - 1500 cm-1)
[00104] In an adhesion-promoting layer according to the present invention, for different measurement positions at different distances from the outer surface of the adhesion-promoting layer, different heights of first maxima result, in which the additional maxima (CH2 oscillation) are approximately constant. The expression C=O group absorption maxima therefore designates normalized C=O group maxima in different spectra, which were measured at different measurement positions or different samples (eg different granules).
[00105] The present invention is illustrated in more detail below in the examples and drawings, in which the examples and drawings do not indicate limitation of the present invention. The following are shown: - Figure 1: schematic cross section through a sequence of layers of a composite in sheet form according to the present invention; Figure 2: schematic cross section through a sequence of layers of an additional sheet-shaped composite according to the present invention; Figure 3: schematic cross section through a sequence of layers of an additional sheet-shaped composite according to the present invention; Figure 4: measurement results of C=O group absorption maxima of an adhesion-promoting layer according to the present invention as a function of the distance between the measurement position and the outer surface of the adhesion-promoting layer; - Figure 5a: Schematic step function of the C=O group absorption maxima of an adhesion promoting layer according to the present invention from a position in a straight line from the outer surface of the adhesion promoting layer to the inner surface of the layer adhesion promoter; - Figure 5b: schematic cross section through a sequence of layers of a sheet-shaped composite according to the present invention with a straight line along which the absorption maxima of the C=O group illustrated in Figure 5a can be measured ; Figure 6: Schematic step function of the C=O group absorption maxima of an additional adhesion promoting layer according to the present invention at a distance from the outer surface of the adhesion promoting layer; - Figure 7: ATR-IR spectra of several polymers; Figure 8: schematic representation of a container precursor according to the present invention; - Figure 9: schematic representation of a container according to the present invention; - Figure 10: flowchart of a sheet-shaped composite manufacturing process according to the present invention; Figure 11: flowchart of a process for manufacturing a container precursor according to the present invention; - Figure 12: flowchart of a process for manufacturing containers according to the present invention; and - Figure 13: flowchart of an additional method of manufacturing containers according to the present invention.
[00106] Figure 1 shows a schematic cross section through a sequence of layers of a sheet-shaped composite 100 according to the present invention. The sheet-shaped composite 100 comprises an outer polymer layer 101 as a layer of a sequence of layers, followed by a carrier layer 102, followed by a polyethylene layer 103, followed by a barrier layer 104, followed by a layer adhesion promoting layer 105, followed by an inner polymer layer 106. The adhesion promoting layer 105 comprises an outer surface of the adhesion promoting layer 107 and an inner surface of the adhesion promoting layer 108. The outer surface 107 of the adhesion promoting layer is adjacent to barrier layer 104 and is characterized by a first C=O group absorption maxima. The inner surface 108 of the adhesion-promoting layer is adjacent to the inner polymer layer 106 and is characterized by a second C=O group absorption maxima. In addition, the inner surface 108 of the adhesion-promoting layer has a first distance 109 to the outer surface 107 of the adhesion-promoting layer. The first distance 109 represents 100 µm. The first absorption maximum of the C=O group represents 1.7. The second C=O group absorption maximum represents 0.22. The outer polymer layer 101 is 100% by weight relative to the outer polymer layer 101 of LDPE and has a surface weight of 20 g/m2. The carrier layer 102 has a surface weight of 210 g/m2 and consists of the Stora Enso Natura T duplex Liquid Bottling Board from the company Stora Enso AG. Vehicle layer 102 is characterized by double coating, Scott Bond value of 200 J/m2 and residual moisture content of 7.5%. Polyethylene layer 103 is characterized by a surface weight of 22 g/m2 and consists of LDPE. Another layer can be positioned between polyethylene layer 103 and barrier layer 104 (not shown), which consists of 100% by weight Novex® M21N430 from Ineos Koln GmbH and has a surface weight of 3 g/m2. barrier 104 has a layer thickness of 6 µm and consists of EN AW 8079 aluminum from Hydro Aluminum Deutschland GmbH. The adhesion promoting layer 105 has a surface weight of 90 g/m2, a layer thickness of 100 µm and consists of 50% of weight, each with respect to the total weight of the adhesion promoting layer 105 of Escor® 5100 from Exxon Mobil Corporation and Novex® M21N430 from Ineos Koln GmbH. The adhesion promoting layer 105 was produced by means of co-extrusion. For this purpose, a polymer fusion of Escor® 5100 and a polymer fusion of Novex® M21N430 were initially created. The two polymer fusions were brought together and placed in contact in a feed block. The contacting polymer melts were extruded together onto the barrier layer 104. When fabricating the adhesion promoting layer 105, therefore, a partial melt blend of Escor® 5100 and Novex® M21N430 was achieved in a section of transition. Outside the transition section, the adhesion promoting layer 105 is partially facing the barrier layer 104 which consists mainly of Escor® 5100 and partially facing the inner polymer layer 106, mainly of Novex® M21N430. The inner polymer layer 106 has a surface weight of 22 g/m2, layer thickness of 10 µm and consists of a PE blend. The PE blend comprises about 80% by weight of mLDPE and 20% by weight of LDPE, with respect to the PE blend.
[00107] Figure 2 shows a schematic cross section through a sequence of layers of an additional sheet-shaped composite 100 according to the present invention. The sheet-shaped composite 100 of Figure 2 is the sheet-shaped composite 100 of Figure 1, but with a different adhesion promoting layer 105. The adhesion-promoting layer 105 comprises an outer surface of the adhesion-promoting layer 107 and an inner surface of the adhesion-promoting layer 108. The outer surface 107 of the adhesion-promoting layer is adjacent to the barrier layer 104 and is characterized by a first maximum of C=O group absorption. The inner surface 108 of the adhesion-promoting layer is adjacent to the inner polymer layer 106 and is characterized by a second C=O group absorption maxima. In addition, the inner surface 108 of the adhesion-promoting layer has a first distance 109 to the outer surface 107 of the adhesion-promoting layer. The first distance 109 represents 100 µm. The first absorption maximum of the C=O group represents 1.7. The second C=O group absorption maximum represents 0.22. The adhesion promoting layer 105 is further characterized by having a third maximum level of absorption of C=O group at the first layer layer 201 with second distance 202 of 50 µm from the outer surface 107 of the adhesion promoting layer. The third maximum absorption of the C=O group represents 0.9. The adhesion promoting layer 105 has a surface weight of 90 g/m 2 and consists of 33.3% by weight each with respect to the total weight of the adhesion promoting layer 105 of Escor® 5100 from Exxon Mobil Corporation; Escor® 6000 from Exxon Mobil Corporation; and Novex® M21N430 from Ineos Koln GmbH. The adhesion promoting layer 105 was produced by means of co-extrusion. For this purpose, an Escor® 5100 polymer fusion, Escor® 6000 polymer fusion and Novex® M21N430 polymer fusion were initially created. The three polymer fusions were brought together and placed in contact in a feed block. The contacting polymer melts were extruded together onto the barrier layer 104. When fabricating the adhesion promoting layer 105, therefore, it achieved partial melt blending of Escor® 5100 and Escor® 6000 in a transition area; and the fusion of Escor® 6000 and Novex® M21N430 in another transition area. Outside the transition areas, the adhesion promoting layer 105 mainly consists of a portion facing the barrier layer 104 of Escor® 5100; in a central part, mainly of Escor® 6000; and, in one part, facing the inner polymer layer 106 mainly of Novex M21N430.
[00108] Figure 3 shows schematic cross-section through a sequence of layers of an additional sheet-shaped composite 100 according to the present invention. The sheet-shaped composite 100 of Figure 3 is the sheet-shaped composite 100 of Figure 1, but with a different adhesion promoting layer 105. The adhesion promoting layer 105 comprises an outer surface of the adhesion promoting layer 107 and a inner surface of the adhesion-promoting layer 108. The outer surface 107 of the adhesion-promoting layer is adjacent to the barrier layer 104 and is characterized by a first absorption maxima of the C=O group. The inner surface 108 of the adhesion-promoting layer is adjacent to the inner polymer layer 106 and is characterized by a second C=O group absorption maxima. In addition, the inner surface 108 of the adhesion-promoting layer has a first distance 109 to the outer surface 107 of the adhesion-promoting layer. The first distance 109 represents 100 µm. The first absorption maximum of the C=O group represents 1.9. The second C=O group absorption maximum represents 0.2. The adhesion promoting layer 105 is further characterized by having a third maximum level of absorption of C=O group in the first level of layer 201 with a second distance 202 of 25 µm from the outer surface 107 of the adhesion promoting layer. The third maximum absorption of the C=O group represents 0.9. The adhesion promoting layer 105 is further characterized by having a fourth level of absorption of C=O group at additional layer level 301 with a third distance 302 of 75 µm from the outer surface 107 of the adhesion promoting layer. The fourth maximum absorption of group C=O represents 0.5. The adhesion promoting layer 105 has a surface weight of 100 g/m2 and consists of 25% by weight each, with respect to the total weight of the adhesion promoting layer 105 of Escor® 5100 from Exxon Mobil Corporation; Escor® 6000 from Exxon Mobile Corporation; Novex® M23N430 from Ineos Koln GmbH; and Novex® M21N430 from Ineos Koln GmbH. The adhesion promoting layer 105 was produced by means of co-extrusion. For this purpose, a polymer melt of each Escor® 5100, Escor® 6000, Novex® M23N430 and Novex® M21N430 was first produced. The four polymer fusions were brought together and placed in contact in a feed block. The contact polymer melts were extruded together onto the barrier layer 104. When fabricating the adhesion promoting layer 105, therefore, a partial melt blend of Escor® 5100 and Escor® 6000 was achieved in one area. transition; the fusion of Escor® 6000 and Novex® M23N430 in second transition area; and the fusion of Novex® M23N430 in second transition area; and the fusion of Novex® M23N430 and Novex® M21N430 in third transition area. Outside the transition areas, the adhesion promoting layer 105 mainly consists of a front to barrier layer 104 of Escor® 5100; in a part after the inner part 108 of the adhesion promoting layer, mainly of Novex® M23N430 in second transition area; and the fusion of Novex® M23N430 and Novez® M21N430 in third transition area. Outside the transition areas, the adhesion promoting layer 105 mainly consists of a front to barrier layer 104 of Escor® 5100; partly after the inner part 108 of the adhesion promoting layer, mainly of Novex® M23N430; and, in part, in front of the inner polymer layer 106, mainly of Novex® M21N430.
[00109] Figure 4 shows the measurement results of C=O group absorption maxima of an adhesion promoting layer 105 according to the present invention, derived from the distance from the measurement position to the outer surface 107 of the adhesion promoting layer . The measurement position at distance 0 is positioned on the outer surface 107 of the adhesion promoting layer. The measuring position at a distance of 100 µm is located on an inner surface 108 of the adhesion promoting surface. Figure 4 demonstrates that the C=O group absorption maximum of the outer surface 107 of the adhesion promoting layer to the inner surface 108 of the adhesion promoting layer becomes lower within the adhesion promoting layer 105.
[00110] Figure 5a shows a schematic step function of C=O group absorption maxima of an adhesion promoting layer 105, according to the present invention, from a position in a straight line 501 of the outer surface 107 of the layer adhesion promoter to the inner surface 108 of the adhesion promoter layer. Position 0 corresponds to the outer side 107 of the adhesion promoting layer. The dotted line in Figure 5a marks the location corresponding to the inner surface 108 of the adhesion promoting layer. The step function comprises three 500 steps and is monotonically descending, but not strictly monotonically descending. Above the first stage 500 (the first from the left), the first absorption maximum of the C=O group is found. Below the third stage 500 (value at the position of the inner surface of the adhesion promoting layer), the second absorption maximum of the C=O group is found. Above the second stage 500 (second from the left), the third C=O group absorption maximum is found. Above the third stage 500 (third from the left), the fourth C=O group absorption maximum is found. The values shown in Figure 5a belong to the adhesion promoting layer 105 of the sheet-shaped composite 100 of Figure 5b.
[00111] Figure 5b shows schematic cross-section through a sequence of layers of a sheet-shaped composite 100 according to the present invention with a line 501 along which the absorption maxima of C=O group can be measured shown in Figure 5a. The outer polymer layer 101, the vehicle layer 102, the polyethylene layer 103, the barrier layer 104 and the inner polymer layer 106 are similar to those described in Figure 1. The adhesion promoting layer 105 is composed of four copolymers. of different ethylene-acrylic acid (EAA). To produce adhesion promoting layer 105, four different EAA copolymer melts were coextruded. In this case, the acrylic acid content is reduced from a first copolymer melt over the second and third to fourth copolymer melt.
[00112] Figure 6 shows a schematic step function of the C=O group absorption maxima of an additional adhesion promoting layer 105 according to the present invention from a distance to the outer surface 107 of the adhesion promoting layer 107. A distance 0 corresponds to the outer surface 107 of the adhesion promoting layer. The dotted line in Figure 6 marks the distance corresponding to the inner surface 108 of the adhesion promoting layer. The step function comprises four 500 steps and is monotonically descending, but not strictly monotonically descending. The adhesion promoting layer 105 is composed of five different ethylene-methacrylic acid (EMAA) copolymers. To produce adhesion promoting layer 105, five different EAA copolymer melts were coextruded. In this case, the methacrylic acid content is reduced from a first copolymer melt over a second, third and fourth to fifth copolymer melt.
[00113] Figure 7 shows ATR-IR spectra of various polymers. For the various copolymers (with ethylene acrylic acid (EAA) and ethylene methacrylic acid (EMAA) as comonomers), the acrylic acid or methacrylic acid contents are shown in parentheses. The spectra displayed were measured on the pure copolymers, not on the adhesion promoting layer 105, in accordance with the present invention. Figure 7 is merely illustrative of infrared and ATR spectroscopy. The measurement was performed over a range of wave numbers from 2000 to 1000 cm-1 with a resolution of 4 cm-1. Peaks in the wavenumber range 1750-1650 cm-1 are generated by oscillating C=O groups. In addition, Figure 7 includes another group of peaks in the wavenumber range from 1400 to 1500 cm-1. These additional peaks correspond to the CH2 oscillation. The maximum C=O group absorption of each spectrum is determined as the ratio between the peak height in the wavenumber range 1750 to 1650 cm-1 and the peak height in the wavenumber range 1400 to 1500 cm - 1. The C=O oscillation is standardized, therefore, in the same spectrum as the CH2 oscillation. This standardized C=O oscillation is the maximum dimensionalless C=O group absorption to be determined. As can be seen, peak heights differ in the wavelength range of 1750 to 1650 cm-1 among the various copolymers, while peak heights in the wavelength range of 1400 to 1500 cm-1 are approximately constant.
[00114] Figure 8 shows a schematic representation of a container precursor 800 in accordance with the present invention. Container precursor 800 comprises the sheet-shaped composite 100 of Figure 1. In addition, container precursor 800 comprises a fold 801 with an adjacent first fold surface 802 and a second fold surface 803. 802 and second fold surface 803 overlap and are sealed together at a seal section 804. Seal section 804 depicts a longitudinal seam of container precursor 800. Container precursor 800 in Figure 8 it has a shell shape.
[00115] Figure 9 shows a schematic representation of a container 900 according to the present invention. The container 900 is closed and includes an internal space 901, which contains apple and cashew juice as a food product. Container 900 comprises the sheet-shaped composite as a wall, according to Figure 2.
[00116] Figure 10 shows a flowchart of process 1000 according to the present invention for producing a composite in sheet form 100. Process 1000 comprises a step (a) 1001 that provides a composite precursor, which comprises as layers a sequence of layers: an outer polymer layer 101, a vehicle layer 102 following the outer polymer layer 101, a polyethylene layer 103 following the vehicle layer, an additional polymer layer following the layer of polyethylene and a barrier layer 104 that follows the additional polymer layer. The outer polymer layer 101 is composed of 100% by weight with respect to the outer polymer layer 101 of LDPE and has a surface weight of 20 g/m2. The vehicle layer 102 has a surface weight of 210 g/m2 and consists of the Stora Enso Natura T duplex Liquid Bottling Frame from the company Stora Enso AG. Vehicle layer 102 is characterized by double coating, Scott Bond value of 200 J/m2 and residual moisture content of 7.5%. Polyethylene layer 103 is characterized by a surface weight of 22 g/m2 and consists of LDPE. The additional polymer layer consists of 100% by weight with respect to the additional polymer layer of Novex M21N430 from Ineos Koln GmbH and has a surface weight of 3 g/m2. The barrier layer 104 has a layer thickness of 6 µm and consists of EN AW 8079 aluminum from Hydro Aluminum Deutschland GmbH. In a process step (b) 1002 of the 1000 process, the barrier layer 104 is overlaid by a promoting layer. adhesion 105 on an opposite side to carrier layer 102. This is accomplished by co-extruding three copolymers of ethylene-acrylic acid or ethylene-methacrylic acid with different content of acrylic acid or methacrylic acid. The three ethylene-acrylic acid copolymers are Escor® 5100 from Exxon Mobil Corporation; Escor® 6000 from Exxon Mobile Corporation; and Novex® M21N430 from Ineos Koln GmbH. The application of the adhesion promoting layer 105 to the barrier layer 104 is carried out by means of melt coextrusion of the three mentioned copolymers. In a process step (c) 1003, the adhesion promoting layer 105 is overlaid by extrusion by an inner polymer layer 106 on an opposite side to the barrier layer 104. The inner polymer layer 106 has a surface weight of 10 g/m2, layer thickness of 10 µm and consists of a PE blend. The PE blend comprises 70% by weight of mLDPE and 30% by weight of LDPE, each corresponding to the PE blend. An adhesion-promoting layer 105 is thus obtained, comprising an outer surface 107 of the adhesion-promoting layer and an inner surface 108 of the adhesion-promoting layer. The outer surface 107 of the adhesion promoting layer is adjacent to the barrier layer 104 and is characterized by a first absorption maxima of the C=O group. The inner surface 108 of the adhesion-promoting layer is adjacent to the inner polymer layer 106 and is characterized by a second C=O group absorption maxima. In addition, the inner surface 108 of the adhesion-promoting layer has a first distance 109 to the outer surface 107 of the adhesion-promoting layer. The first distance 109 represents 100 µm. The first absorption maximum of the C=O group represents 1.7. The second C=O group absorption maximum represents 0.2. The adhesion promoting layer 105 is further characterized as having third level C=O group absorption maximum at first level layer 201 with second distance 202 of 50 µm from the outer surface 107 of the adhesion promoting layer. The third maximum absorption of the C=O group represents 0.9. The adhesion promoting layer 105 has a surface weight of 90 g/m2.
[00117] Figure 11 shows a flowchart of a process 100 according to the present invention for manufacturing a container precursor 800. Process 1100 comprises a process step (a) 1101: providing a composite in sheet form 100 according to Figure 1; a process step (b) 1102: folding the sheet-shaped composite 100 to form a fold 801 with at least two adjacent fold surfaces 802 and 803; and a process step (c) 1103: joining at least one partial section 804 of the at least two fold surfaces 802, 803 with the other partial section 804 by sealing. In process step (c) 1103, the longitudinal seal of the container precursor 800 is formed. The bending in step (b) 1102 is conducted in the form of cold bending and the sealing in step (c) is conducted by means of ultrasonic heat shrinkage transmitted by a sonotrode.
[00118] Figure 12 shows a flowchart of a process 1200 according to the present invention for producing a container 900 according to Figure 9. Method 1200 comprises a process step (a) 1201: providing a precursor of container 800. Container precursor 800 comprises the sheet-shaped composite 100 of Figure 2. In addition, container precursor 800 comprises a fold 801 with adjacent fold surfaces 802 and 803. The two adjacent fold surfaces 802, 803 at the fold 801 they overlap in a sealing section 804. At the sealing section 804, there is a sealing connection between the two fold surfaces 802 and 803. The container precursor is tube-shaped. In a process step (b) 1202 of the process (1200), the container precursor 800 is closed by means of a closure tool. For this purpose, the container precursor 800 is laterally compressed, fixed and a part of the tube-shaped container precursor 800 is separated towards the tube. This part obtains a lower section by folding and sealing or gluing, which is closed. This creates an open container. The open container obtains an upper section by means of folding and sealing or gluing, which is closed to obtain the closed container 900.
[00119] Figure 13 shows an additional process flowchart 1200 of producing container 900, according to the present invention. Process 1200 of Figure 13 is the process of Figure 12, wherein the process of Figure 13 comprises an additional process step 1301 between process steps (a) 1201 and (b) 1202. food product, ham broth, is placed in the container precursor 800. The filling is carried out before separating the precursor part from the tube-shaped container 800.
[00120] List of reference numbers: 100 Sheet-shaped composite according to the present invention 101 Outer polymer layer 102 Vehicle layer 103 Polyethylene layer 104 Barrier layer 105 Adhesion promoting layer 106 Inner polymer layer 107 Surface Adhesion promoting layer outer surface 108 Adhesion promoting layer inner surface 109 First distance 201 First layer layer 202 Second distance 301 Additional layer level 302 Third distance 500 Level 501 Straight line from outer surface of adhesion promoting layer to inner surface 800 Container precursor according to the present invention 801 Fold 802 First fold surface 803 Second fold surface 804 Sealing section 900 Closed container according to the present invention 901 Inner space 1000 Manufacturing process of composite in sheet form according to with the present invention 1001 Process step (a) of the composite manufacturing process in sheet shape 1002 Process step (b) of the sheet-shaped composite manufacturing process 1003 Process step (c) of the sheet-shaped composite manufacturing process 1100 Container precursor manufacturing process according to the present Invention 1101 Process step (a) of container precursor production process 1102 Process step (b) of container precursor production process 1103 Process step (c) of container precursor production process 1200 Production process of container according to the present invention 1201 Process step (a) of container production process 1202 Process step (b) of container production process 1301 Process step of filling with food product

权利要求:
Claims (20)
[0001]
1. COMPOSITE IN SHEET SHEET (100), characterized in that it comprises, as layers of a sequence of layers (101): a. an outer polymer layer (101); B. a vehicle layer (102) after the outer polymer layer (101); ç. a barrier layer (104) after the vehicle layer (102); d. an adhesion promoting layer (105) after the barrier layer (104); and is. an inner polymer layer (106) after the adhesion promoting layer (105); wherein the adhesion promoting layer (105) comprises an outer surface (107) of the adhesion promoting layer and an inner surface (108) of the adhesion promoting layer; wherein the outer surface (107) of the adhesion promoting layer: i. is adjacent to the barrier layer (104); and ii. it has as its first characteristic maximum absorption of the C=O group; wherein the inner surface (108) of the adhesion promoting layer: A. is adjacent to the inner polymer layer (106); B. has as characteristic second maximum absorption of group C=O; and C. has first distance (109) to the outer surface (107) of the adhesion promoting layer; wherein the first C=O group absorption maximum is higher than the second C=O group absorption maximum; wherein the vehicle layer (102) has a weight per square meter in the range of 120 to 450 g/m2.
[0002]
2. SHEET-SHAPED COMPOUND (100) according to claim 1, characterized in that the adhesion-promoting layer (105) at first layer level (201) with second distance (202) from the outer surface (107) the adhesion-promoting layer has a third C=O group absorption maximum; where the second distance (202) represents from 5 to 95% of the first distance (109); where the third C=O group absorption maximum: a. is lower than the first C=O group absorption maximum; and b. is higher than the second C=O group absorption maximum.
[0003]
3. COMPOSITE IN SHEET SHEET (100), according to claim 1 or 2, characterized in that the first absorption maximum of the C=O group is in the range from 0.1 to 5.
[0004]
4. LEAF-SHAPED COMPOUND (100), according to any one of claims 1 to 3, characterized in that the second absorption maximum of the C=O group is in the range of more than 0 to 1.
[0005]
5. COMPOSITE IN SHEET SHEET (100), according to any one of claims 2 to 4, characterized by the fact that the third maximum absorption of group C=O is in the range of 0.015 to 4.5.
[0006]
6. SHEET-FORM COMPOUND (100), according to any one of claims 2 to 5, characterized in that the second distance (202) represents from 5 to 20% of the first distance (109), in which the third maximum absorption of group C=O is in the range of 0.05 to 4.5.
[0007]
7. SHEET-FORM COMPOUND (100), according to any one of claims 2 to 5, characterized in that the second distance (202) represents from 50 to 95% of the first distance (109), in which the third maximum absorption of C=O group is in the range of 0.015 to 1.2.
[0008]
8. SHEET-FORM COMPOUND (100), according to any one of the preceding claims, characterized in that one selected from the group consisting of the first absorption maximum of group C=O, the second absorption maximum of C=O group and the third C=O group absorption maxima, or a combination of at least two of these, is an absorption maxima of C=O groups comprising functional groups selected from the group consisting of acid groups carboxylic acid, a salt of carboxylic acid groups, carboxylic anhydride groups, or a combination of at least two of these.
[0009]
9. SHEET-FORM COMPOUND (100), according to any one of claims 1 to 8, characterized in that one selected from the group consisting of the first absorption maximum of C=O group, the second maximum of C=O group absorption and the third C=O group absorption maximum, or a combination of at least two of these, is an absorption maximum of a functional group that is one repeating unit based on a monomer selected from from the group consisting of acrylic acid, acrylic acid salt, methacrylic acid, methacrylic acid salt, acrylic acid ester, maleic acid and maleic anhydride, or a combination of at least two of these.
[0010]
10. SHEET-SHAPED COMPOUND (100), according to any one of the preceding claims, characterized in that the first distance (109) is greater than a layer thickness of the inner polymer layer (106).
[0011]
11. PROCESS (1000), characterized in that it comprises the process steps (1001, 1002, 1003): a. providing composite precursor, which comprises, in the form of layers of a sequence of layers: i. an outer polymer layer (101); ii. a vehicle layer (102) after the outer polymer layer (101); and iii. a barrier layer (104) after the vehicle layer (102); B. superimposing an adhesion-promoting layer (105) on the barrier layer (104) on a side opposite the carrier layer (102); ç. superimposing an inner polymer layer (106) on the adhesion-promoting layer (105) on a side opposite the barrier layer (104); wherein the adhesion promoting layer (105) comprises an outer surface (107) of the adhesion promoting layer and an inner surface (108) of the adhesion promoting layer; wherein the outer surface (107) of the adhesion promoting layer: A. is adjacent to the barrier layer (104); and B. has as its first characteristic maximum absorption of the C=O group; wherein the inner surface (108) of the adhesion promoting layer: I. is adjacent to the inner polymer layer (106); II. has as characteristic second maximum absorption of group C=O; and III. it has a first distance (109) to the outer surface (107) of the adhesion promoting layer; wherein the first C=O group absorption maximum is higher than the second C=O group absorption maximum; wherein the vehicle layer (102) has a weight per square meter in the range of 120 to 450 g/m2.
[0012]
12. PROCESS (1000) according to claim 11, characterized in that the adhesion promoting layer (105) at first layer level (201) with a second distance (202) from the external surface (107) of the promoter of adhesion has third maximum absorption of group C=O; where the second distance (202) represents from 5 to 95% of the first distance (109); and where the third C=O group absorption maximum: a. is less than the first C=O group absorption maximum; and b. is greater than the second C=O group absorption maximum.
[0013]
13. PROCESS (1000), according to claims 11 or 12, characterized in that, in the process step (b) (1002) or in the process step (c) (1003), or in both, the overlap comprises an extrusion.
[0014]
14. PROCESS (1000), according to claim 13, characterized in that the extrusion of process step (b) (1002) comprises coextrusion of at least a first polymer melt, second polymer melt and third polymer melt polymer; wherein, prior to process step (b) (1002), the first polymer melt is produced from a first series of polymer particles, the second polymer melt is produced from a second series of polymer particles and the third polymer melt is produced from a third series of polymer particles; wherein the C=O group absorption maximum of the first series of polymer particles is higher than the C=O group absorption maximum of the third series of polymer particles; wherein the C=O group absorption maximum of the third series of polymer particles is greater than the C=O group absorption maximum of the second series of polymer particles.
[0015]
15. PRECURSOR OF CONTAINER (800), characterized in that it comprises a composite in sheet form (100) as defined in any one of claims 1 to 10; wherein the sheet-shaped composite (100) comprises at least one ply (801) with at least two adjacent ply surfaces (802, 803); and wherein at least one partial section (804) of the at least two fold surfaces (802, 803) is sealingly joined with the other corresponding partial section (804).
[0016]
16. PROCESS (1100), characterized in that it comprises, as process steps (1101, 1102, 1103): a. providing the composite in sheet form (100) as defined in any one of claims 1 to 10; B. folding the sheet-shaped composite (100) to form a fold (801) with at least two adjacent fold surfaces (802, 803); and c. joining at least one partial section (804) of the at least two fold surfaces (802, 803) with the other partial section (804) by sealing.
[0017]
17. CLOSED CONTAINER (900), which surrounds an internal space (901), characterized in that the container (900) comprises the composite in the form of a folded sheet (100) as defined in any one of claims 1 to 10.
[0018]
18. PROCESS (1200), characterized in that it comprises, as process steps (1201, 1202): a. providing the container precursor (800) as defined in claim 15; and b. closing the container precursor (800) by means of a closure tool.
[0019]
19. USE OF THE COMPOUND IN SHEET (100) according to any one of claims 1 to 10 or of a composite in sheet form obtained by the process (1000) according to any one of claims 11 to 14, characterized by the fact that it is intended for the production of containers.
[0020]
20. USE OF THE CONTAINER (900) according to claims 17 or of a container obtained by the process (1200) according to claim 18, characterized in that it is intended for filling a food product in the container (900 ).

类似技术:

---

公开号 | 公开日 | 专利标题

---

BR112017000220B1|2021-08-24|COMPOUND IN SHEET FORM, PROCESS, CONTAINER PRECURSOR, CLOSED CONTAINER, USE OF COMPOUND IN SHEET FORM AND USE OF CONTAINER

---

ES2755001T3|2020-04-21|Robust flat composite material with an intermediate layer of increased Vicat softening temperature

---

RU2623265C2|2017-06-23|Planar composite material with plastic layers that have different vicat softening temperature

---

US20200207055A1|2020-07-02|Sheetlike Composite, Especially for Production of Dimensionally Stable Food and Drink Product Containers, Having a Roof Area Formed by a Multitude of Groove Lines Having Partly Convex Curvature

---

US9975685B2|2018-05-22|Packaging container made of a sheet-like composite with improved adhesion-layer and inner-layer combination

---

AU2015282761B2|2018-02-22|Sheet-like composite with an m-polyolefin layer with a reduced antioxidant proportion, in particular for food packaging

---

US9221228B2|2015-12-29|Container formed from a container blank and having improved opening properties as a result of stretching heat treatment of polymer layers

---

BR112012018623B1|2021-06-01|LAMINATED COMPOSITE, PACKAGING AND PROCESS FOR THE PRODUCTION

---

US9073280B2|2015-07-07|Container formed from a roll and having improved opening properties as a result of stretching heat treatment of polymer layers

---

US20150352820A1|2015-12-10|Planar composite having layers of plastic from plastics with different damping properties, having a layer comprising lldpe

---

EP3212514B1|2020-01-15|Device, in particular for closing a head region of a foodstuffs container made of a laminate having an edge region which is skived and partially folded over itself

---

EP3309085A1|2018-04-18|Container precursor, in particular for producing a dimensionally stable foodstuff container, having a sheetlike composite, a first and a second wall region

---

RU2636730C2|2017-11-27|Sheet composite material with layers of plastics, having different damping properties

---

BR112017008802B1|2021-11-03|CONTAINER FORER MANUFACTURING, CONTAINER FORER MANUFACTURING PROCESS, CLOSED CONTAINER, CLOSED CONTAINER MANUFACTURING PROCESS AND CONTAINER FORMER USE

同族专利:

---

公开号 | 公开日

---

AU2015286974B2|2017-11-16|

---

EP3166782B1|2019-02-20|

---

BR112017000220A2|2018-01-16|

---

CN106470832A|2017-03-01|

---

EP3166782A1|2017-05-17|

---

JP6397985B2|2018-09-26|

---

DE102014010016A1|2016-01-14|

---

ES2719580T3|2019-07-11|

---

RU2016152086A|2018-08-08|

---

PL3166782T3|2019-08-30|

---

JP2017529256A|2017-10-05|

---

US20170157885A1|2017-06-08|

---

MX2016017170A|2017-06-29|

---

TR201906226T4|2019-05-21|

---

AU2015286974A1|2017-01-12|

---

WO2016005241A1|2016-01-14|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US3658741A|1966-09-19|1972-04-25|Allied Chem|Homogeneous copolymers from ethylene|

---

US4267928A|1978-07-26|1981-05-19|Curry Byron V Jun|Composite container structure|

---

GB2111065A|1981-10-29|1983-06-29|Raychem Sa Nv|Ethylene copolymer blend hot melt adhesives|

---

JPH0221226Y2|1985-04-17|1990-06-08|

---

DK0461116T3|1989-03-03|1995-11-27|Fbi Brands Ltd|Packing of perishable liquids in gable top cartons|

---

US5108844A|1989-12-28|1992-04-28|American National Can Company|Blended films, structures therefrom, and methods of making and using them|

---

JPH07205365A|1993-11-30|1995-08-08|Toppan Printing Co Ltd|Packaging material excellent in resistance to content|

---

SE9604687L|1996-12-19|1998-06-20|Tetra Laval Holdings & Finance|Packaging laminate, methods of making the packaging laminate and packaging containers|

---

JP4249278B2|1997-08-01|2009-04-02|大日本印刷株式会社|Paper container|

---

US6500514B1|2000-08-29|2002-12-31|Pechiney Emballage Flexible Europe|Encapsulated barrier for flexible films and a method of making the same|

---

US6500656B1|2001-04-03|2002-12-31|Applera Corporation|Isolated human kinase proteins, nucleic acid molecules encoding human kinase proteins, and uses thereof|

---

US20040105994A1|2002-12-03|2004-06-03|Pang-Chia Lu|Thermoplastic film structures with a low melting point outer layer|

---

CN1628965A|2003-12-15|2005-06-22|大日本印刷株式会社|Laminated material for container and paper container using the laminated material|

---

US7125929B2|2004-05-11|2006-10-24|Equistar Chemicals, Lp|Adhesive composition having improved clarity for coextruded barrier films|

---

SE528259C2|2004-12-22|2006-10-03|Tetra Laval Holdings & Finance|Packaging laminates, methods in connection with their manufacture, film for its manufacture and a packaging container|

---

AU2008201776A1|2008-04-22|2009-11-05|Amcor Limited|Corrugated paperboard|

---

EP2451637B1|2009-07-08|2019-08-21|Tetra Laval Holdings & Finance S.A.|Robust packaging laminate, method for manufacturing of the packaging laminate and packaging container produced therefrom|

---

DE102010006036A1|2010-01-27|2011-07-28|Sig Technology Ag|Aluminum-free sheet-like composite food container with a coated hole as part of a closure system|

---

DE102010033466B4|2010-08-05|2012-11-08|Sig Technology Ag|Packaging container made of a sheet-like composite with improved adhesive and inner layer combination|EP3397477A1|2015-12-28|2018-11-07|SIG Technology AG|Sheet-like composite, especially packaging laminate for dimensionally stable foodstuff containers, having a polymeric internal layer characterized by differential scanning calorimetry|

---

WO2017207367A1|2016-05-31|2017-12-07|Sig Technology Ag|Laminate for dimensionally stable foodstuff containers having an outer polymer layer with a reflectance|

---

DE102016213838A1|2016-07-27|2018-02-01|Sig Technology Ag|Surface-shaped composite for producing dimensionally stable food containers with a bio-based barrier layer|

---

DE102016216241A1|2016-08-29|2018-03-01|Sig Technology Ag|SURFACE COMPOSITE FOR MANUFACTURING STAINLESS FOOD CONTAINERS WITH A BARRIER LAYER THAT HAS A BRILLIANT SURFACE INSIDE|

---

DE102016219119B4|2016-09-30|2020-09-03|Sig Technology Ag|Roll receiving device with an electrical contact for a roll of a sheet-like composite for producing dimensionally stable food containers|

---

DE102017201449A1|2017-01-30|2018-08-02|Sig Technology Ag|Sheet-like composite for producing dimensionally stable food containers with a barrier layer, which has a barrier substrate layer and an inwardly-facing barrier material layer|

---

DE102017212142A1|2017-07-14|2019-01-17|Sig Technology Ag|Sheet-like composite, in particular for producing dimensionally stable food containers, comprising a polymer layer P with an L value|

---

DE102017212144A1|2017-07-14|2019-01-17|Sig Technology Ag|Sheet-like composite, in particular for producing dimensionally stable food containers, with a first and a further adhesion promoter layer, each having an acrylate content|

---

WO2019222433A1|2018-05-16|2019-11-21|Exxonmobil Chemical Patents Inc.|Layered film structures, article made therefrom, and methods for making the same|

---

DE102018212798A1|2018-07-31|2020-02-06|Sig Technology Ag|SURFACE-SHAPED COMPOSITE, IN PARTICULAR FOR THE PRODUCTION OF SHAPE-STABLE FOOD CONTAINERS, INCLUDING A POLYMER LAYER WITH A POLYESTER AND A SHEAR THINNING|

---

DE102018212799A1|2018-07-31|2020-02-06|Sig Technology Ag|FLAT-SHAPED COMPOSITE, ESPECIALLY FOR THE PRODUCTION OF STABLE FOOD CONTAINERS, INCLUDING A POLYMER OUTER LAYER WITH A POLYESTER|

---

DE102018212797A1|2018-07-31|2020-02-06|Sig Technology Ag|FLAT-SHAPED COMPOSITE FOR THE PRODUCTION OF STABLE FOOD CONTAINERS, INCLUDING A POLYMER LAYER WITH A POLYESTER AND ISOTROPICAL E-MODULE|

法律状态:
2020-02-11| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

---

2021-06-29| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

---

2021-08-24| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 01/07/2015, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

---

申请号 | 申请日 | 专利标题

---

DE102014010016.2|2014-07-08|

---

DE102014010016.2A|DE102014010016A1|2014-07-08|2014-07-08|Sheet-like composite, in particular for containers, having a bonding agent layer characterized by various C = O group absorption maxima|

---

PCT/EP2015/064958|WO2016005241A1|2014-07-08|2015-07-01|A sheet-like composite, especially for containers, with an adhesion-promoting layer characterised by different c=o group absorption maxima|

---