packaging comprising a flexible film laminate

专利摘要:
PACKAGE OPENING FEATURE AND METHOD OF MANUFACTURING THE SAME The present invention relates to flexible film packaging that has a packaging feature that is easily opened incorporated in them and a method for producing such packaging. The package opening feature can be incorporated into a variety of packaging formats, such as flow wrap packages that have a longitudinal seal (including flip seals and side seals) or packaging with side seals (including small two-seal seals) , three or four sides) In an illustrative approach, the packaging opening feature is arranged adjacent to or on a packaging seal, such as an end seal, a top seal, a bottom seal, a seal side or a longitudinal seal. The flexible film laminate has at least one first and a second film layer and at least one of the film layers defines an internal cavity configured to contain the packaged products. In many of the configurations, flexible film packaging can be resealable or resealable.
公开号:BR112015020719B1
申请号:R112015020719-7
申请日:2014-03-10
公开日:2021-02-23
发明作者:Louis Peter Fenech Iii；Rachel Lyn Leichte；Jeffrey Thomas Weber；Evan ZIOLKOWSKI
申请人:Intercontinental Great Brands Llc；
IPC主号:

专利说明:

Technical field
[001] This disclosure refers, in general, to a flexible packaging and, in particular, to a flexible packaging that has an opening feature. Background
[002] Flexible film packaging is well known in the art for product storage and transportation. These flexible film packs can provide a lightweight package with an airtight seal. A substantial or partial hermetic seal makes these flexible film packages useful for storing a variety of food products, including, for example, biscuits, chewing gum, chocolates, cookies, cheese sandwiches, crackers, sweets, meats, dried fruits and vegetables, to mention just a few options. In addition, such flexible film packaging can be used for non-food applications, such as medical, pharmaceutical or industrial applications. Depending on the product, some of these flexible film packages may also contain structural supports, such as a frame or tray, while others may contain only the products to be packed.
[003] A type of flexible film packaging is formed from a single layer of material that is formed or wrapped around a product. These flow wrap packages (that is, packages formed horizontally or vertically using a single layer of material) are formed by wrapping or wrapping the product with the material layer and forming a longitudinal seal, such as a fin, bottom or fold seal with two end portions of the material mat. A pair of end seals can then be formed on the blanket to form the packages. In other embodiments, packages formed from more than a single layer of material and with several side seals can be formed. Due to the fact that these packages can provide hermetically sealed wrappers, they are suitable for packaging food products and other products that require protection against contamination by moisture, oxygen and the ambient atmosphere.
[004] Flexible film packaging has many advantages over other containers. For example, flexible film packaging can be manufactured at a substantially lower cost than rigid containers and can be substantially lighter in weight, which results in reduced transport costs. In addition, as they are comprised of flexible film, these packages do not require the same amount of storage space as rigid containers, which can be particularly beneficial for market owners, pharmacists and others who stock these products in such packages.
[005] Although packaging is highly desirable for packaging and transportation, consumers sometimes find it difficult to open packaging and access its contents. For example, consumers often open such packages by taking two walls of a package and pulling the two walls away from each other, separating them. Some consumers may cut the flexible film from the package with scissors to open the package, especially when the consumer has a hard time gripping the walls of the package or breaking a seal on the package. None of these opening methods, however, are typically resealable or easily resealable.
[006] In other configurations, the opening features, such as tear initiation features, are incorporated into the film. Consumers have also experienced limitations with these tear initiation features. For example, some initiation features provide unreliable tear propagation and require accurate registration during packaging formation in order to be useful. These tear initiation features are also typically non-resealable or easily resealable.
[007] The packaging opening features that can be incorporated into resealable or resealable packaging may include adhesive-free flaps or with weakened adhesive on the face of the package, arranged at a distance from one end of the package or side seal. For example, resealable packaging may have a sealing layer or label with an adhesive-free portion that can be hand held and lifted by a consumer to provide access to the contents of the packaging. Many consumers are not particularly quick to recognize portions of adhesive-free or weakened-adhesive handles on the face of packages, and so packages sometimes include instructions next to the side or end seals of the package in order for the consumer to locate the handle portion on the face of the package to open the resealable opening. Brief description of the drawings
[008] Figure 1 comprises a perspective view of a package with an open resource in a closed configuration; Figure 1A comprises a detailed view of a portion of the package of Figure 1; Figure 2 comprises a perspective view of the package of Figure 1 in a partially open configuration; Figure 3 comprises a perspective view of the package of Figure 1 in an open configuration; Figure 4 comprises an end view of the package of Figure 1; Figure 5 comprises a schematic top view of an external portion of a laminate; Figure 6 comprises a schematic top view of an external portion of a laminate; Figure 7 comprises a schematic top view of an inner portion of a laminate; Figure 8 comprises a schematic top view of an external portion of a laminate; Figure 9 comprises a cross section of the package of Figure 1 on line 9-9; Figure 10 comprises a cross section of the package of Figure 3 on line 10-10; Figure 11 comprises a cross section of the laminate of Figure 7 on line 11-11; Figure 12 comprises a cross section of the laminate of Figure 7 on line 12-12; Figure 13 comprises a top view of an alternative embodiment of a package with a package opening feature; Figure 14 comprises a detailed view of a portion of Figure 13; Figure 15 comprises the packaging of Figure 13 in an open configuration; Figures 16 and 17 comprise perspective views of an alternative embodiment of a package with an opening feature; Figures 18 to 20 comprise perspective views of an alternative embodiment of a package with an opening feature; Figure 21 comprises a schematic top view of an external portion of an alternative laminate configuration; Figure 22 comprises a top schematic view of an external portion of an alternative laminate configuration; Figures 23 to 25 comprise perspective views of an alternative embodiment of a package with an opening feature; Figure 26 comprises a schematic top view of a configurable laminate to form the package of Figure 23; Figure 27 comprises schematic top views of an alternative laminate configuration; Figures 28 to 30 comprise perspective views of an alternative embodiment of a package with an opening feature; Figure 31 comprises a schematic top view of a configurable laminate to form the package of Figure 28; Figure 32 comprises a schematic top view of an alternative laminate configuration; Figures 33 to 35 comprise perspective views of an alternative embodiment of a package with an opening feature; Figure 36 comprises a schematic top view of an alternative laminate configuration; Figure 37 comprises a schematic top view of an alternative laminate configuration; Figure 38 comprises a schematic top view of an alternative laminate configuration; Figures 39 and 40 comprise top schematic views of an internal and external portion of an alternative laminate configuration; Figures 41 and 42 comprise perspective views of the alternative laminate configuration of Figures 39 and 40 formed in a package; Figures 43 and 44 comprise perspective views of an alternative embodiment of a package with an opening feature; Figure 45 comprises a schematic top view of an alternative laminate configuration; Figure 46 comprises a schematic top view of an alternative laminate configuration; Figures 47 to 49 comprise perspective views of the alternative laminate configuration of Figure 46 formed in a package; Figures 50 to 52 comprise top schematic views of alternative laminate configurations; Figures 53 and 54 comprise top schematic views of an alternative embodiment of a package with an opening feature; Figure 55 comprises a schematic top view of a portion of a laminate configured to form the package of Figures 53 and 54; Figures 56 and 57 comprise perspective views of an alternative embodiment of a package with an opening feature; Figure 58 comprises a schematic top view of a portion of the package of Figures 56 and 57; Figure 59 comprises a schematic top view of an alternative embodiment of Figure 58. Detailed Description
[009] According to the various modalities described here, flexible film packages are provided that have a useful easy-to-open resource and methods for producing these packages. The packaging opening feature can be incorporated into a variety of packaging formats, such as flow wrap packaging that has a longitudinal seal (including flip seals and side seals) or packaging with side seals (including small sealing wrappers) with two, three or four sides). It is envisaged that the packaging opening feature is arranged adjacent to or on a packaging seal, such as, for example, an end seal, a top seal, a bottom seal, a side seal or a longitudinal seal, to mention just a few options. In one approach, the flexible film laminate that forms these packages has at least the first and second layers of film and at least one of the layers of film defines an internal cavity configured to contain the packaged products. In many of the configurations, flexible film packaging can be resealable or resealable.
[0010] In an illustrative embodiment, the flexible film laminate may have a first pair of edge portions formed on a first end seal, a second pair of edge portions formed on a second end seal and a third pair of portions edge formed on a third longitudinal seal, such as a fin seal or a bend seal. In other configurations, the flexible film laminate can be supplied in a package that has side seals.
[0011] In one approach, the first and second layers of film are coextensive with each other. In yet another approach, one of the film layers is arranged within the edges of the other film layer, so that the film layers are not coextensive with one another. For example, the first film layer can extend into the third edge portions of the second film layer and can also extend from the first end seal to the second end seal.
[0012] In one configuration, the flexible film laminate will include a pressure sensitive adhesive or other resealable adhesive disposed between at least portions of the first and second layers of film. In one example, the resealable adhesive can be disposed along the area between the first and second layers of film. In other configurations, the resealable adhesive is disposed in only a few areas between the first and second layers of film, so that the resealable adhesive can be wrist coated or applied in a standard way. Depending on the package formed, the standard application process may have only the resealable adhesive or it may have a permanent adhesive in addition to the resealable adhesive, if desired, for the packaging. In other configurations, the package may include only a permanent adhesive or sealant between the layers of film, which can be applied continuously or in a pulse or pattern application process.
[0013] Additionally, the flexible film laminate can have a first side, a second side and a thickness of laminate between them. As described in the present invention, when formed in a package, the second side of the flexible film laminate is typically oriented towards the inner cavity of the flexible film package.
[0014] As noted above, the packaging opening feature is disposed adjacent to or on the packaging seal. In an illustrative embodiment, the packaging opening feature is disposed distal to the packaging body or internal cavity with respect to the end seal. For example, the packaging opening feature can be arranged on the edges of the packaging film in addition to the end seal. In one approach, a packaging opening is disposed in the packaging body between the end seals, and the packaging opening feature is disposed adjacent to the end seal on a side away from the packaging opening and not on the packaging body. Yet another approach, the packaging opening feature, or a portion thereof, can be arranged on the film in the same position where the end seal is formed on the film. In other configurations, the opening feature of the packaging can be placed on the film on the packaging body, just inside the packaging seal. It is also envisaged that the package opening feature can extend from beyond the end seal to the end seal or the end seal into the film of the package body. Additionally, in a certain configuration, the opening feature of the package can extend from one side of the end seal to the other side.
[0015] Although the packaging opening feature may be arranged adjacent to or on the packaging seal, in some packaging configurations, the end seal may not break when opening the packaging and accessing the contents of the packaging. For example, in an embodiment that has an opening arranged on the face of the package, between the end seals and that has a resealable closing element disposed on it, the opening feature of the package will not break the end seal, but, instead, it will allow the consumer to easily open the package by lifting the resealable closing element to expose the opening. In another illustrative embodiment, the package opening feature is disposed adjacent to or on the package seal and then breaks the end seal as the package is opened.
[0016] To provide an easy opening feature on the flexible film packaging, gripping portions can be formed on the flexible film. When the flexible film laminate is formed in the package, the gripping portions can be arranged adjacent to or in a formed packaging seal, such as an end seal, top seal, bottom seal, side seal or longitudinal seal. In one approach, the gripping portions include a pull tab that has a first position when the package is closed and a second position when the package is opened. In one configuration, when the pull tab is disposed in the second position, a portion of the first film layer and a tab of the second film layer are also arranged upwardly from the rest of the package by pulling a tab to pull from the portions gripping upward from the rest of the package and lifting the portion of the first film layer and the flap of the second film layer to expose an opening of the package. In other configurations, when the pull tab is pulled upward, a portion of the first film layer is lifted to expose a cut in the second film layer through which the package contents can be removed.
[0017] The gripping portions may also include an opposite gripping flap defined by an edge of the package, such as an anterior edge of the package. A consumer can take the flap to pull and the flap of the opposite grasp and pull the two flaps one in the opposite direction from the other to open the package. As noted above, the opening feature of the package, including the gripping portions, can be formed on the film in addition to the end seal, on the end seal or just inside the end seal, with respect to the body of the package. While some configurations may have both grip portions arranged in addition to the end seal or just inside the end seal, it is also envisaged that one of the grip portions can be arranged adjacent to the end seal and another of the grip portions can be arranged on the end seal.
[0018] In one example, the pull tab is defined, in part, by a complete cut formed across the entire thickness of the flexible film laminate, so that the pull tab has a gripping edge that can be held securely easily and manually by a consumer. In addition, a partial depth cut through a second portion of the flexible film laminate can also define a portion of the flap to pull. For example, the full cut can define the front edge of the flap to pull and the partial depth cut through a portion of the flexible film laminate can define a rear edge of the flap to pull. The opposite gripping portions can also be defined, in part, by the complete cut formed across the entire thickness of the flexible film laminate. More particularly, in one configuration, the opposite gripping portion includes a cut or separate portion of the first film layer defined by an edge of the package, such as an anterior edge of the package and the complete cut.
[0019] In addition to the rear edge of the pull tab, partial depth cuts through a second portion or section of the flexible film laminate can also define an opening in the package. For example, a partial depth cut can define a portion of the second film layer, such as a flap, which is raised to form the opening of the package. In one approach, the internal partial depth cuts are formed through a second portion of the flexible film laminate and extend only partially through the entire thickness of the flexible film laminate.
[0020] In addition to the partial depth cut on the inner surface of the packaging film, an external partial depth cut can be formed on the first film layer. In one approach, the external partial depth cuts extend from a first side of the flexible film laminate through a first portion of the flexible film laminate and extend only partially through the entire thickness of the flexible film laminate. External partial depth cuts can form a narrowing portion of the first film layer at a point where the narrowing portions are arranged adjacent to the wrap opening feature and thus facilitate the lifting of a portion of the first film layer to from the rest of the packaging. The external partial depth cut can also define a sealing panel or sealing layer that is lifted from the rest of the package when the opening is exposed. In one aspect, the portion of the first film layer, which does not form the pull tab and the sealing panel or sealing layer, can be removed or removed from the package.
[0021] In an illustrative embodiment, the first portion or section of the flexible film laminate through which the external partial depth cuts extend is equivalent to the thickness of the first film layer, and the second portion or section of the flexible film laminate through which the internal depth cuts extend is equivalent to the thickness of the second film layer. Therefore, in one configuration, the partial depth cuts extend across the entire thickness or through almost the entire thickness of the first and second layers of film, respectively. It is also envisaged that the internal and external partial depth cuts may extend through the second or first layer of film, respectively, and into the resealable adhesive disposed between the first and second layer of film, but not into the other film layer. In summary, although the partial depth cuts extend into the first and second layers of film, none of the partial depth cuts are expected to extend across the entire thickness of the flexible film laminate.
[0022] In an illustrative embodiment, the package may not include a flap that is raised to expose a packaging opening, but, instead, it will include a cut that is large enough to be manipulated to create an opening through which the food content can be removed. In this configuration, the internal partial depth cut may still form the opening of the package, but the internal partial depth cut may not define a flap or portion of the second film layer that is raised to expose the opening.
[0023] As described here, the packaging opening feature is disposed adjacent to or on the front edge of the packaging. However, it is noted that the person skilled in the art will readily understand these teachings to include a packaging opening that is formed on the rear edge or on the side of the package, although only the example of the rear edge of the package is described in detail in the present invention for reasons brevity.
[0024] In one aspect, a packaging opening feature suitable for use in a flexible film package may include a first end seal formed by the upper and lower portions of the package and the gripping portions formed in the flexible film adjacent to the first seal end point. In addition, the gripping portions can include a first portion and a second portion, where the first and second portions are pulled away from each other to open the package associated with them. The first gripping portion can be defined, in part, by a full depth cut or a complete cut through the first and second sections of the flexible film of the upper portion of the package and a partial cut arranged in the second section of the flexible film of the portion top of the package, the partial cut being at least partially arranged in the first end seal. The second gripping portion can be defined, in part, by an outer packaging edge, in some configurations, by the complete cut disposed through the first and second sections of the flexible film of the upper packaging portion. In one example, the front edge of the package will be welded, so that the upper and lower portions of the package are connected to each other. In one approach, the complete cut arranged through the first and second sections of the flexible film of the upper packaging portions provides a separation between the first and second gripping portions of the first layer of film, so that the consumer can easily detect the opening feature and can easily grab the two separate gripping portions.
[0025] In one approach, a laminate for making flexible film packaging includes a flexible film mat that has a mat thickness, a mat width and a longitudinal axis, where the mat has at least the first and the second layers of film with an adhesive disposed between at least the portions of the first and second layers of film. In one aspect, the flexible film sheet is configured to be formed in a series of blank packaging forming blocks, so that each identical blank packaging forming block includes a series of partial depth cuts formed there, extending from one side of the flexible film to a portion of the thickness of the web and a full depth cut that extends completely across the entire thickness of the flexible web and across a portion of the width of the film. In one example, the partial depth cuts subsequently form a packaging opening and a portion of a pull tab and the full depth cut subsequently forms a leading edge of the pull tab.
[0026] A method for manufacturing a package may include forming partial depth cuts in a continuous flexible film web that has a thickness, width and a longitudinal axis. A series of internal partial depth cuts (formed on one side of the film subsequently formed on an internal surface of a package) can be formed partially through the thickness of the flexible film and subsequently defines an opening of the package and a rear edge or edge rear of a flap to pull. The method may also include forming a full depth cut across the entire thickness, but only across a portion of the width, of the continuous flexible film web. A continuous longitudinal seal can be formed from a pair of opposite edges of the continuous flexible film web and the first and second end seals can be formed in the flexible film, so that the full depth cut is arranged between the seals end of adjacent packages and the first end seal crosses, at least partially, the partial depth cuts that form the rear edge of the flap for pulling. The method may also include separating individual packages from the series by forming a cut between the end seals of adjacent packages, so that a separation cut is arranged between the second end seal of a previous package and the complete cut of a posterior packaging. In another configuration, a series of external partial depth cuts can be formed in an external layer of the flexible film, subsequently forming a narrowing portion of the external layer of the flexible film that can be lifted from the rest of the package at the time of opening.
[0027] In one approach, when the front edge of the package is formed by a claw or sealing knife, the residual heat from the claw or sealing knife can weld the upper and lower portions of the package to the front edge of the package. Such welding is typically described as edge welding. Such edge welding may allow the separate portion, which is formed by the front edge of the package and the total cut and subsequently becomes a portion of the opposite gripping portion, to adhere to or bond with the remainder of the package. More particularly, due to the fact that the layers of flexible film in addition to the end seals are free ends and therefore are not otherwise attached to each other, the portion of the first layer of film disposed beyond the total cut would be separated from the rest of the package if the front edge of the package was not welded to the edge in that position.
[0028] An apparatus for forming a laminate described in the present invention can include a first cylinder configured to support a laminated flexible film mat having at least a first layer of film, a second layer of film and an adhesive disposed between, at least the portions of the first and second layers and a second cylinder disposed downstream of the first cylinder, where the second cylinder is configured to support the laminated flexible film mat. The apparatus may also include a multi-level cutter disposed between the first and the second cylinders. The multi-level cutter forms a series of partial depth cuts in the flexible film laminate on one side of the laminate, subsequently forming an inner surface of the package and a full depth cut in the flexible film laminate. The full depth cut formed by the multi-level cutter extends across an entire thickness of the flexible film laminate, but is arranged less than an entire width of the flexible film laminate.
[0029] An in-line apparatus for forming packaging of the type that fills and seals may include a set of cylinders configured to hold a laminated flexible film mat and a folding element configured to handle the laminated flexible film mat in a tubular format. forms the cavity in which a food product is disposed through a filling tube. The in-line apparatus may also include a multi-depth cutter configured to form a series of partial depth cuts and full depth cuts within the flexible film laminate. Partial depth cuts can include a flap cut which subsequently forms a rear edge of a flap for pulling. The in-line apparatus may also include sealing claws configured to form the first and second end seals on the flexible film laminate to thereby form a portion of the flexible film packages. It is envisaged that the sealing claws will be configured to form a portion of unsealed film between the first and second end seals of adjacent packages. In addition, the in-line apparatus is configured to arrange the full depth cut in the portion of unsealed film between the first and second end seals of adjacent packages and at least a portion of the flap cut being arranged in the first seal. end point.
[0030] In yet another configuration, a package described herein includes a flexible film laminate with the first and second layers of film and a resealable adhesive disposed between the portions of the layers of film. The flexible film laminate can define, at least in part, the interior of a package. The package additionally includes a package opening feature disposed adjacent to a first package end seal, the package opening feature including a pull tab that can be held and lifted to expose the opening of a package formed in the second layer of packaging. film. In addition, the pull tab can be arranged in an adhesive-free area between the first and second layers of film. The pull tab of such a package can be arranged distal to the inside of the package in relation to the first package seal. The pull tab may also include a pop-up cut formed through a portion of the first film layer and extending from an outer surface of the package. The package may also include a full depth cut that extends through the first and second layers of film from the upper portion of the end of the package, where the full depth cut defines a leading edge of the flap to pull. Alternatively or additionally, the pull tab may undergo heat treatment at the time of forming the package to create or induce irregularities in the film that forms the pull tab to make it more readily apparent to consumers. If the heat treatment of the pull tab is desired to create irregularities that highlight the location of the pull tab, the film material of the first outer layer that forms the pull tab should be selected according to its properties in this regard.
[0031] The flexible film packaging described here may contain a food product, although packaging applications may also include non-food applications, such as medical, pharmaceutical or industrial packaging applications, to mention just a few additional options. In addition, the packages may have an initial, at least partial, hermetic seal to provide a barrier, at least partial, against the ambient atmosphere. More particularly, to increase the shelf life of the products contained within the flexible film package, the seals forming the package can be airtight or, at least partially or substantially, airtight. To that end, the packaging may include seals formed by a variety of processes such as, for example, hot sealing, cold sealing, low-tack seal (including the use of a low-tack adhesive or fastener), sonic waves and combinations of the same.
[0032] If a resealable seal is incorporated into the flexible film packaging, such as that formed around an opening in the face of the packaging and surrounded by a sealing layer or panel, film layer or closing layer, a pressure sensitive adhesive or another resealable adhesive can be incorporated into the flexible film packaging.
[0033] Flexible film packaging can have a variety of configurations including, for example, a pouch, a containment bag, a straight shape, a cylindrical shape and a column shape, among others. In one approach, the configuration and shape of the packaging are mainly influenced by the products contained within the packaging, in part, due to the flexibility of the flexible film laminate. In yet another approach, the configuration of the packaging is mainly influenced by the structure inside the packaging, such as an internal rigid support or product tray. In these configurations, the flexible film can be configured as a “flow wrap” or wrap around the structure.
[0034] Flexible film packaging can be produced in a number of ways. For example, flexible film packages can be formed around the food product or can be formed in whole or in part and then filled with food products. In addition, it is envisaged that flexible film packaging can be formed in line just before the food product is packaged or formed around the food product. In some applications, it may be desirable to form the flexible film laminate or the entire flexible film packaging offline long before the products are packaged.
[0035] As used here, the flexible film laminate can be formed from various materials and can be arranged as a blanket of material in a cylinder or as individual crude blocks. For example, flexible film laminate can be laminated, extruded, molded, blown or a combination thereof. In one approach, the flexible film laminate may include several thin layers of material, such as thin layers of a polymeric material. More specifically, the structure of the flexible film laminate may include a layer of polyethylene terephthalate (PET), polyethylene, a layer of oriented polypropylene (OPP), a layer of poly (lactic acid) (PLA), a single layer polymer (monoweb), a sealing layer (such as ethylene vinyl acetate (EVA), ionomeric plastic, matalicin, organophilic clays and the like), a layer of paint or printed material, nylon, a metallized layer, such as a layer of metallized oriented polypropylene (MET OPP), paper, foil, an adhesive and / or a non-woven material, among others. These various layers can be included in the flexible film laminate and can have a variety of thicknesses and densities.
[0036] In an illustrative approach, the flexible film laminate can be a combination of several of the aforementioned materials or film structures. For example, a laminated flexible film structure may include a PET layer, an ink layer, an adhesive layer and a biaxially oriented polypropylene (BOPP) layer. In another example, the structure can include a BOPP layer, a paint layer, a low density polyethylene layer and a metallized OPP. In yet another configuration, the structure can include a surface lacquer layer, a paint layer and a cavitated OPP. Additionally, the components of the flexible film laminate can be joined, for example, by adhesives or by an extrusion process. Although the flexible film laminate can be described as having a first film layer, a second film layer and / or an adhesive layer, the laminate can include additional layers in addition to these three layers, and the element skilled in the art will be able to adopt the teachings presented here to accommodate the additional layers of the flexible film laminate.
[0037] As noted above, in an illustrative embodiment, the flexible film package will have a partial depth cut and a full or complete depth cut in the flexible film. These cuts can be formed in a number of ways, including mechanical training or laser training.
[0038] The packaging opening feature described here can be incorporated into a wide variety of packaging formats. In a specific format, flexible film packaging may be resealable or resealable packaging, although it is also envisaged that packaging produced in accordance with these teachings may not be resealable or resealable. If the package is resealable, so that at least a partial hermetic seal is obtained after the initial opening, a pressure sensitive adhesive or other resealable adhesive can be arranged around the partial depth cuts that form the opening of the package and between the layers of film. In one approach, the pressure sensitive adhesive or resealable adhesive is neutral and non-reactive with the product being packaged. For example, the pressure-sensitive or resealable adhesive may include a cold-formed adhesive, a hot-melt adhesive, a cold-sealing adhesive, a synthetic or natural latex adhesive, a low-adhesion adhesive, an ethylene vinyl acetate (EVA) ), an acrylic adhesive (such as a solvent or water-based acrylic adhesive), a styrene block copolymer adhesive, a butyl rubber adhesive, a silicone rubber adhesive, a natural rubber adhesive, a nitrile adhesive , an acrylic emulsion adhesive, a water-based acrylic adhesive and combinations thereof. In addition, the pressure sensitive or resealable adhesive can be extruded, coextruded, printed or a combination thereof.
[0039] As further discussed above, the end or end point of partial depth cuts and full depth cuts or complete cuts can be configured to inhibit or prevent further breakage of the film beyond the formed cut. For example, the end of the cut may have a configuration similar to a "J" hook, or a double "J" hook, a smile, a shepherd's hook, a teardrop and a double teardrop, to mention just a few finishing features.
[0040] As mentioned above, consumers sometimes find it difficult to locate and operate the packaging opening feature included in the flexible film packaging. The full depth cut or full cut discussed above takes advantage of the inherent tension in the film, so that during the laminate or packaging conversion process, the full or full depth cut forms a gripping edge that can be easily held by hand by a consumer. The full depth cut alters the tension in the flexible film laminate or how the tension works on various portions of the flexible film. For example, portions of the film around the full depth cut may lose tension in certain directions (that is, in the machine direction or across the machine), depending on the setting of the full depth cut. In one aspect, the complete cut results in an increase in tension towards the machine in a portion of the film that is arranged between the edges out of the total cut and the edges of the mat. In addition, as shown, to prevent the change in tension of the flexible film from destroying or altering the operation of the film, a reverse perforation or adhesion point can be used.
[0041] Additionally, when the package is formed, the partial depth cut provides a separation or distance between the grip edge of a pull tab formed on the first outer film layer from the rest of the outer film. This helps to highlight the location of the package opening feature for the consumer, as well as providing an easy way to open the package. In addition to the separation or distance between the portions of the outer film layer, the full depth cut can result in a pull tab that is slightly raised or lifted from the adjacent film, such as the first film layer that forms a gripping portion opposite. In addition, the full depth cut and the change in tension between the film portions can result in a wrinkle or an irregularity in the mat as the package is being formed. This wrinkle, if present when the packaging seals are formed, can accentuate the lifting of the flap to pull in comparison to the surrounding film.
[0042] In some configurations described in this document, it may be desirable to deal with the opening feature of packaging to highlight its location to consumers. More particularly, the gripping portions can be treated to create tension and irregularities in the surface and shape of the flap, which then can result in a more noticeable flap. For example, the gripping portions or the flap portion can include a pop-up partial depth cut or a marking, or can be heat treated. The treatment features can occur in addition to the indication printed on the flexible film laminate that directs the consumer to the opening feature of the packaging.
[0043] In one approach, the pop-up partial depth cut can be formed in the portion of the flap that the consumer lifts to open the package. Pop-up partial depth cutting can take place through a portion of a single film layer and can be formed from the outer surface of the first film layer. While some of the partial depth cuts discussed above were arranged partly across the entire thickness of the flexible film, but entirely through a layer of film, the partial depth pop-up cut does not extend entirely through a single layer of the film in a modality. In one approach, the packaging opening feature may include a partial or incomplete pop-up depth cut. The pop-up cut can create additional tension in the film during packaging. This tension can create irregularities in the flexible film laminate, so that the packaging opening feature or the pull tab can additionally be recognizable by consumers or users.
[0044] In another approach, a portion of the front edge of the pull tab, or the entire pull tab, can be arranged on the end seal, so that the pull tab is treated with the heat that is used to form the end seal. In some configurations, the first film layer on the end seal may not have a sealant or other adhesive that can cause the first film layer to stick to or adhere to the second film layer when heated, and therefore when treating the first layer of film to heat it up, this will not join the first layer of film to the second layer of film. However, it is anticipated that the application of heat will cause shrinkage, stretching or other irregularities in the film, which may indicate or draw attention to the flap to pull the opening feature. In an illustrative example, the heat-treated area of the flap portion will be wavy, arched, or pulled slightly upward, so that the consumer can easily feel the portion of the packaging opening feature that must be handled.
[0045] A flexible film package with a package opening feature can combine the opening features described here in a number of different packaging configurations. As described below, a variety of different combinations are envisaged. The combination of features can also help consumers locate the opening feature to prevent a consumer from accidentally and unintentionally breaking an end seal when the package already includes a resealable package opening on the face of the package between the seals end (and when it is not intended that the end seals of the package are broken under typical packaging use). In addition, the combination of the features provided here can also help consumers to easily break or open the end seal of a package where intended.
[0046] With initial reference to Figure 1, an illustrative flexible film package 5 is shown. The flexible film package 5 is formed from a flexible film laminate 10 (see, for example, Figure 8) and includes a first film layer 12 and a second film layer 14. As shown in Figures 1 to 8 , the first film layer 12 is arranged over a portion of the width of the second film layer 14 and along the entire length of the second film layer 14. A pressure sensitive or resealable adhesive 16 (Figures 11 and 12) can be arranged between at least the portions of the first and second layers of film 12, 14 and can be arranged entirely between all portions of the first and second layers of film 12, 14. In the configurations of Figures 1 to 11, it is provided that the pressure sensitive or resealable adhesive 16 can be disposed continuously between the first and second layers of film 12, 14 without interruption.
[0047] An exemplary embodiment of a package with an elongated closure layer arranged from an end seal to another end seal is found in copending order US serial number 13 / 698,568, which is incorporated herein by reference.
[0048] The flexible film laminate 10 is formed in a flexible film package 5 which has an internal cavity 18 and a set of packaging seals. Specifically, the flexible film package 5 includes a first pair of edge portions 20 which is formed on a first end seal 22, a second pair of edge portions 24 which becomes a second end seal 26 and a third pair of end portions 28 which are formed in a longitudinal seal 30 (Figure 4). The flexible film laminate 10 is wrapped around the product or can be configured to form an internal cavity for receiving the product. The third edge portions 28, shown in Figures 4, 11 and 12, are joined together and sealed to thus form a portion of an internal cavity 18 that is completely sealed when end seals 22 and 26 are formed in the flexible film laminate 10. The internal cavity 18 may contain, for example, food products 6 or other products intended for the consumer. As shown in Figure 3, food products 6 arranged within the flexible film package 5 are accessed through a packaging opening 38 which is arranged on the face of the package between the end seals 22, 26. Although the opening of the packaging 38 in Figure 3 it is resealable, it is also provided that a package with one of the packaging opening features described in the present invention may include a non-resealable or non-resealable opening.
[0049] The flexible film package 5 of Figure 1 additionally includes an exemplary package opening feature 8. The package opening feature 8 of Figure 1 includes gripping portions 32 disposed adjacent to the first end seal 22. In one embodiment For illustrative purposes, gripping portions 32 comprise a pull tab 34 and an opposite grip flap 36. A user or consumer can hold the pull tab 34 in one hand and the opposite grip flap 36 in the other hand and then pull the pull tab 34 and the hold tab 36 in the opposite direction of each other to open the flexible film package 5. As the pull tab 34 is pulled or lifted from the rest of the package, a portion of the first layer of film 12 is raised to expose the opening of the package 38.
[0050] As shown in Figure 3, when the first film layer 12 of the package 5 is lifted, a flap 68 of the second film layer 14, defined by the internal partial depth cut 48 (see, for example, Figures 7 and 8), is raised to expose aperture 38. Although the example in Figure 3 illustrates a flap 68 being lifted and separated from the rest of the second layer of film 14, it is also predicted that only a partial internal cut may be exposed when the first layer of film 12 is raised, so that the partial internal cut exposes a crack through which the products are removed. Figure 6 also illustrates that the internal partial depth cut 48 may include a package integrity feature 82, which extends and breaks when the package is initially opened (see, for example, Figure 3). In addition, although an example of a packaging integrity feature is illustrated in the present invention, several exemplary packaging integrity features can be employed with the packaging described herein.
[0051] The pull tab 34 can comprise a portion or cut 70 of the second film layer 14 and portions of the first film layer 12. An anterior or rear edge of the pull tab 34 can be defined by a full or deep cut total 54. In addition, the cutting portion 70 may have a rear or inner edge defined by a partial depth cut 50 disposed on the second film layer 14. Examples of different configurations of such partial depth cuts 50 can be found in the order. US Patent Serial No. 13 / 300,317, which is hereby incorporated by reference.
[0052] In addition, the opposite gripping flap 36 may comprise a portion of the first film layer 12 and the second film layer 14 defined by a rear outer edge of the package. The full cut or full depth cut 54 disposed through the first and second layers of film 12, 14 can also define a portion of the opposite grip flap 36. For example, the opposite grip flap 36 may include a separate portion 76 that it is defined, in part, by a separating cut forming an anterior edge 66 of the package and the gripping flap 36 can extend up to or beyond the full depth cut 54. The separate portion 76 of the first film layer 12 is formed the leading edge 66 and the full depth cut 54 and is typically maintained in the rest of the container by edge welding or residual heat from the claw or sealing knife. This edge weld joins the top and bottom portions of the package with each other at the edge of the package. In one embodiment, the edge weld may not attach the separate portion 76 to the rest of the package, and therefore the opposite gripping flap 36 is defined by a portion of the upper packaging portion 72 disposed below the separate portion 76. opposite grip 36 may extend from the front edge 66 of the package 5 to the inner surface of the exposed second film layer 14 when the cutting portion 70 of the second film layer 14 is pulled upward. It is exposed because the cutting portion 70 of the second film layer 14 exposes the inner surface of the lower film portion 74 of the end of the package (see, for example, Figure 10). In this way, the gripping flap 36 can extend beyond the full depth cut 54 disposed through the first and second layers of film of the upper packaging portion 72. For example, the opposite gripping flap 36 can include the separate portion 76 and may include a portion of the lower film portions adjacent to the full depth cut 54. Alternatively, if the packaging edge, such as the leading edge 66, has not been welded by the sealing knife and claws, then the opposite gripping portion 36 may include the film disposed below the separate portion 76 prior to the separation of the package when the cutout 76 is no longer attached to the package. As used here, the full depth cut 54 is arranged across the entire thickness of the first and second layers of film prior to forming the package, so that when the package is formed, the full depth cut is completely arranged only through of the upper packaging portion that is wrapped around the content, as further discussed above.
[0053] As mentioned above, highlighting the location of the gripping portions 32 helps the consumer or user to locate and manipulate the packaging opening feature 8. One way to provide this indication is through a separation 17 arranged between the separate portion 76 and the flap to pull 34.
[0054] A portion of a flexible film laminate mat 11, shown in Figures 5 to 8, can be formed in the flexible film package 5 of Figure 1. In Figure 5, laminate mat 11 includes the first layer of film 12 arranged on the second layer of film 14. An external partial depth cut 46 is formed on the first layer of film 12 and creates a sealing panel or sealing marker 80 that is lifted from the package to expose the opening of the package 38. The partial depth cut outer 46 forms a narrowing portion 60 of the sealing panel 80 and a portion of the narrowing portion 60 is subsequently formed on the pull tab 34 which is hand held and lifted from the remainder of the package 5 to expose a package opening 38. In in an illustrative embodiment, portions of the first film layer 12 that do not form the sealing panel 80 can be removed or removed from the laminate or packaging.
[0055] In Figure 6, the laminated mat 11 will have undergone further processing and now includes a full cut or full depth cut 54 that extends across the entire thickness of the laminated film mat 11 and the partial depth cuts inner 48, 50. The inner partial depth cut 48 subsequently forms a packaging opening and the inner partial depth cut 50 subsequently forms an edge, like the rear edge, of the pull tab 34. While Figure 6 shows an outer surface of the laminate, Figure 7 illustrates the surface of the laminate that becomes the inner surface of the package.
[0056] When forming individual packages 5 of a series of packages, a separation cut 62 through the flexible film laminate is made between the end seals of adjacent packages. In one example, this point of separation occurs between the second seal 26 of an anterior packaging and the first seal 24 of a posterior packaging. The location of the separation cut 62 is illustrated in relation to the end sealing areas 64 and the partial and total depth cuts 54, 50 in Figure 8.
[0057] As illustrated, there is a distance between the sealing areas 64 (where the end seals of adjacent packages are formed in the flexible film) and the location of the separation cut is arranged at that distance. Therefore, in the area between the end seals of adjacent packages, the end portions of the flexible film are not typically sealed together. In this way, the upper and lower portions of the film 10 which is wrapped around the product, in that area, are not sealed to each other. Thus, the film disposed between the end seals of adjacent packages typically has free ends 58. In some manufacturing applications, however, the separation knife becomes very hot and begins to fuse, join or weld the free ends 58 of the package one to the others, and this edge weld can extend the entire width of the package. This edge weld can make it difficult for consumers to pick up the packaging walls separately to break the end seal. In these configurations, a package opening feature like the one described here can be particularly useful.
[0058] In the flexible film package 5 of Figure 1, the front and rear edges of the packages are formed by a contour knife. In this way, the contoured edge of the package 5 can be welded together, so that the consumer cannot easily pull the upper and lower portions 72, 74 of the flexible film 10 away from each other. However, a consumer can easily grasp the gripping edge 56 that is formed in the flexible film 10 through a full or full depth cut 54 formed therein.
[0059] As mentioned, Figure 8 illustrates the location of the cuts 46, 48, 50, 54 that form the laminated mat 11 and the sealing area 64 where the sealing claws 64 will apply pressure to the shaped film and form the end seals and the separation cut 62 where the knife will separate the packages from the blanket or series of packages. In addition, Figure 8 shows where the opposite gripping portion 36 and the pull tab 34 will be formed. The separation cut 62 will define the front edge 66 of the package and the shape of the opposite gripping portion 36. The full depth cut 54 partly forms the pull tab 34, along with the partial depth cut 50. In fact , the specific internal partial depth cut 50 that forms the rear edge of the pull tab 34 will typically be the partial depth cut 50, like a wavy line, which partially falls within the sealing area 64 in the configuration of Figures 1 to 10. More particularly, as the pull tab 34 is pulled upwards, the first film layer 12 pulls the second inner film layer 14 upwards. A portion of the second film layer 14 will separate from itself when the film has been pulled back to the partial depth cut 50 which is disposed within the end seal 64, which then forms the rear edge of the flap for pulling 34. This is because one or more of the wavy lines or partial depth cuts 50 through the second film layer 14 are sealed down and into the sealing area 64. Partial depth cuts 50 that do not fall within the seal 64 do not adhere to the rest of the package and therefore are free to be lifted upwards with the first layer of film 12.
[0060] The packaging seals subsequently formed in the flexible film take advantage of the induced or altered tension in the laminated mat 11 due to the formation of the full depth cut 54 in the laminated mat 11, as discussed above. Although the effects of tension may not be great, they can be noticed when the laminated mat of flexible film 11 is formed in the packages 5. As can be seen in Figure 1A, the full depth cut 54 creates a small separation 17 between the portions of the film forming the pull tab 34 and the separate portion 76 of the opposite grip portion 36. This separation 17 highlights the grip edge 56 of the pull tab 34, which the consumer or user can pull up to open the package 5 In addition to the separation 17, the packaging opening feature 8 may include a certain vertical lift or distance between the pull tab 34 and the adjacent end seal, so that the pull tab 34 is lifted upward for the consumer or user can more easily hold the flap to pull 34.
[0061] To illustrate the various portions of the packaging opening feature 8, Figures 9 and 10 illustrate the packaging in cross section along lines 9-9 and 10-10, respectively. Although these figures illustrate the cross section of the packages along the center line, the longitudinal seal over the lower portion of the package has been removed for clarity. The end seals 22 and 26 are formed from the upper and lower film portions 72, 74 of the package. The upper and lower film portions 72, 74 are sealed together at the ends to form the end seals 22, 26. As shown in Figure 9, the full or full depth cut 54 extends across the entire thickness of the flexible film 10 of the upper film portion 72 and the internal partial depth cuts extend partly through the second film layer 14 from an internal surface of the flexible film 10.
[0062] The full depth cut 54, across the entire thickness of the flexible film 10 of the upper film portion 72, provides a gripping edge 56 of the pull tab 34 that the consumer or user can use to hold the pull tab 34 and lift the cutting portion 70 and the first film layer 12, or at least the sealing panel 80, from the first film layer 12. Since there is no adhesive between the upper and lower portions 72, 74 and the portions 72 , 74 have not been sealed to each other in position beyond the first end seal 22, the consumer is able to handle the gripping portion 56 of the flap to pull 34 and put a finger on either side of the flap 34 to hold and pull the flap to pull 34 upward from a remainder of the container. In addition, the consumer can grasp the opposite handle flap 36 firmly while the package is being opened. As the pull tab 34 is lifted away from the rest of the container, the internal partial cut that defines opening 38 is exposed and in the embodiment of Figures 1 to 10, tab 68 (or at least a portion of it) ) is lifted from the remainder of the second film layer 14, which thus provides a relatively large packaging opening 38, so that the consumer can more easily access the products 6 within the packaging. In addition, by having the package opening feature 8 moved to a location adjacent to or on the package end seal, the package can have a relatively larger opening than those packages that have a package opening feature on the face of the package. More particularly, because it has the pull tab 34 next to the end seal, the opening of the package may be slightly larger than that previously incorporated in those packages.
[0063] Another exemplary configuration is illustrated in Figure 13 as the flexible film package 15. Although the flexible film package 15 is similar to the flexible film package 5, the flexible film package 15 is not intended to be resealable. The flexible film package 15 includes a first end seal 122, a second end seal 126 and a package opening feature 18 which is disposed adjacent to one of the end seals. Additionally, the package 15 may include a single layer of film 113 which is wrapped around the contents of the package, as opposed to the first and second layers of film where at least one of the layers of film is wrapped around the content.
[0064] The package opening feature 18 includes grip portions 132, which may include a pull tab 134 and an opposite grip tab 136. As can be seen in the detailed view of Figure 14, a full depth cut, similar at full depth cut 54, it provides a noticeable separation 117 between the grip edge 156 of the pull tab 134 and a separate portion 176, which is defined by a front edge of the package formed by a split cut or knife and the cut of total depth across the entire thickness of the upper portions of the flexible film 10. The opposite gripping flap 136 may include the separate portion 176 and the inner surface of the inner film portion which is disposed adjacent to the separated portion 176.
[0065] As suggested above, if the cut forming knife that separates the packages does not weld the edge of the separate portion 176 to the lower film portion of the end of the package, then the separated portion 176 will not join or adhere to the rest of the package 15 and therefore, it can be completely separated from the packaging. In such a configuration, the lower film portion disposed below the separate portion 176 will form that area of the opposite gripping portion 136. Additionally, the opening feature 18 remains readily visible to consumers, even without the separation 17 between the separated portion 176 and the grip edge 156 (i.e., if the separate portion 176 has not joined or fused to the package at the edge of the package). More particularly, the front edge of the package, which defines the opposite grip tab 136, is disposed at a distance beyond the grip edge 156 in this configuration and therefore two edges (the edge of the pack 166 and the grip edge 156) are indented from each other. In this way, the upper and lower portions 72, 74 forming the end of the package extend in different lengths from the first end seal 122.
[0066] As shown in Figures 13 to 15, the pull tab 134 is defined, in part, by a gripping edge 156 formed by the full depth cut and a portion of the film 113 adjacent thereto. In addition, when the pull tab 134 and a flap 168, which is a portion of the film 113 defined by a partial depth cut 147, are pulled upward from the remainder of the package, the opening 138 is exposed. The partial depth cuts 147 of the package 15 are broken to expose an opening of the package 138. More particularly, the partial depth cut 147 is broken so that the entire thickness of the flexible film is torn along its length. In Figures 13 to 15, the rupture or tear of the partial depth cut 147 creates an opening that begins at the end seal 122, which is broken. The partial depth cut 147 can be formed from the inner and / or outer surface of the flexible film, although if both the inner and outer partial depth cuts are incorporated into the packaging 15, the misalignment of the cuts could be employed to ensure that the packaging retains a seal against the ambient atmosphere. In addition, although package 15 is not intended to be resealable, a cold sealing adhesive can be used on the first end seal 122 to provide an adhesion reseal feature.
[0067] As shown in Figures 13 to 15, the partial depth cuts 147 guide the tearing of the film 113, which creates the opening of the package 138. The partial depth cuts 147 illustrated in Figures 13 and 14 are straight lines; however, additional configurations are foreseen. For example, Figure 50 illustrates a full depth cut 1654 and partial depth cuts 1647 that include a pair of curved lines 1647a that intersects two straight lines 1647b and this configuration provides a larger packaging opening arranged close to the opening feature. As suggested above, partial depth cuts 1647 can be formed on an inner and outer surface of flexible film 1610. Another example, shown in Figure 51 illustrates a full depth cut 1754 and a partial depth cut 1747 that includes two lines that have several curved sections. The cuts 1754 and 1747 have two different depths, but they can be formed on the same matrix. In this configuration, the full depth cut 1754 does not extend into the film beyond the area of the end seal 1764. Finally, Figure 52 illustrates a partial depth cut 1847 that forms a circuit, which forms a panel or tab 1868 which is lifted from a remainder of the package to expose an opening of the package. This opening could be suitable for a bag from which the contents of the package are poured through the opening.
[0068] Figure 52 also illustrates notches or reverse perforations 1890 that let the material settle there, in that location, which remains uncut. In an illustrative example, the 1890 reverse perforations can be formed by a notch in the die that forms the full depth cut 1854, so that the die does not cut the film material at the notched location. This 1890 reverse perforation helps maintain the relationship between different portions of the 1810 flexible film. For example, the 1890 reverse perforations allow multiple portions of the film that surround the full depth cut to maintain their relationship with each other after the formation of the cut off. total depth. A reverse perforation built into the flexible film may allow the flexible film packaging to have additional or alternative configurations for full depth cutting. In the example in Figure 52, the reverse perforations 1890 are arranged outside the area that forms the pull tab 1834 and the opposite grip flap 1836. Additionally, these reverse perforations work primarily to maintain the ratio of the film portions before the packaging is formed. . For example, the rollers on which the flexible film sheet is rolled can fold back portions of the flexible film if the portions of the film are not maintained in their proper relationship to each other. In this way, reverse perforations can be particularly useful during the laminate and packaging conversion processes.
[0069] While the modalities of Figures 1 to 15 have a packaging edge formed by a curved or contoured knife, in another configuration of the packaging 25, shown in Figures 16 and 17, the edge of the previous outer packaging 266 is a line straight and linear across the width of the package 25. Additionally, while packages 5, 15 have an extension portion defined by the front edge of the package and a corresponding length cutting portion on the rear edge of the package, package 25 does not include that extension . Additionally, in packages 5.15, at least, the opposite gripping portions 36, 136 are arranged on the extension portion.
[0070] On the other hand, the packaging 25 of Figures 16 and 17, which is formed, in part, by a straight knife cut, does not have a packaging extension or a corresponding cutting portion. In this way, the front edge of the package is straight and the opposite grip flap 236 also has a straight edge. The pull tab 234, however, still has an anterior edge defined by a full depth cut, similar to that discussed above with respect to Figures 1 to 10. Therefore, in Figures 16 and 17, the front edge of the package and the opposite grip flap 236 has a straight edge, while the front edge of the pull tab 234 has a non-linear configuration defined by the full depth cut. Although the configuration of the opening feature 208 may be slightly different from the configurations described above, the opening feature 208 works similarly to the opening features 8, 18.
[0071] In another configuration of the package, shown in Figures 18 to 21, the package 35 has an adhesive-free area 378. The laminated mat 311, shown in Figure 21, illustrates the location of the adhesive-free area 378 arranged between the first and second layers of film 312 and 314, which can be formed by default when applying the adhesive or, alternatively, can be formed by pulse coating adhesive, as discussed above. The package opening feature 308 is disposed at the location of the adhesive-free area 378 which is arranged beyond the end seal 322. To open the packaging 35, a consumer can hold the adhesive-free pull tab 334 which is defined by the edge front of the package and the adhesive-free area 378. While the previous packages may have incorporated an adhesive-free flap over the face of the package between the end seals, the opening feature 308 is arranged in addition to the end seal 322, so that the consumer can recognize the package opening feature 308 before breaking the end seal 322 and also so that the opening of the resulting package 338 can be relatively larger than if the package opening feature were included on the face of the package . In addition, to assist the consumer to further recognize the packaging opening feature 308, the adhesive-free pull tab 334, or a portion thereof, may be arranged in the sealing area 364 when the packages are formed. This way, while the adhesive-free flap 334 will not stick to the lower packaging portions because there is no sealant or other adhesive that can cause it to be attached to them during packaging formation, the heat treatment of the flap to pull free of adhesive 334 will cause shrinkage, stretch or other irregularities to occur in the film, which then curls, bends or pulls the flap to pull free of adhesive 334 slightly upwards, so that the consumer more easily recognizes the location of the opening feature packaging 308. Figure 22 illustrates a laminate 411 that is similar to the laminate of Figure 21. For example, laminate 411 includes an adhesive-free area 478 that is partly arranged in an end sealing area 464. It is However, it is anticipated that a straight knife (as opposed to a contoured knife) will separate the laminate formed 411 into two individual packages, so that the packages will have a straight edge and a straight edge.
[0072] In the illustrative configuration of Figures 23 to 26, package 55 includes the first and second layers of film 512, 514 which are coextensive with respect to each other. In this way, both the first and second layers of film 512, 514 are wrapped around the product and form the longitudinal seal and the upper and lower portions of the end seals 522, 526. As it has coextensive films 512, 514, the cut external partial depth 546 defines a sealing panel 580 and the general shape of the adhesive-free pull tab 534. When the sealing panel 580 is lifted up from package 55, by pulling the adhesive-free pull tab 534 at one end of the a flap 568, or a portion thereof, formed on the second film layer 514 is also lifted. The flap 568 is formed by an internal partial depth cut 548 formed on the inner surface of the second layer of film 514. In addition, when these packages are formed using standardly applied adhesives, the pattern may include a permanent adhesive in an area , a resealable adhesive in another area and an adhesive-free area. The various cuts formed on the package are then aligned or registered with the various adhesive zones. For example, the permanent adhesive can be disposed between the film layers 512, 514 in the area where the flap 568 is formed, while the resealable adhesive can be disposed in the area between the partial depth cuts 546 and 548. It is also provided that the package 55 can be formed only with the resealable adhesive disposed between the layers 512, 514. In this configuration, the resealable adhesive can be applied discontinuously between the layers to form an adhesive-free portion 578.
[0073] In the configuration of Figures 23 to 26, the cutting knife that separates the packages 55 from each other is a straight knife and, therefore, the front edge of the package opening feature 508 is a straight linear edge. In addition, as shown in laminate 511, of Figure 26, the adhesive-free area 578 is partly arranged in the area of the seal 564 that forms the end seal 522 during formation of the package. In this way, the adhesive-free pull tab 534 is heat treated to create irregularities in the film for curling, arching or pulling the tab upward on the front edge of the film.
[0074] Figure 27 illustrates a laminated mat 611 similar to the laminated mat 511 of Figure 26, but the outer partial depth cut 646 is configured differently than the outer partial depth cut 546. Specifically, the adhesive-free pull tab 634, instead of extending straight out to the separation cut 562, is defined at the front edge by the outer partial depth cut 646. In fact, the outer partial depth cut 646 curves inward and closes or intersects with the other portion of the outer partial depth cut 646 at a distance away from the front edge of the package. In this way, the front edge of the adhesive-free pull tab 646 is not defined by a front edge of the package, which is formed by the separation cut 662, but is instead defined by the shape of the partial depth cut 646. A tab for pulling 634, depending on the material of the external flexible film layer that forms the sealing panel 680 and the tab for pulling 634, it may also have irregularities created in it that cause it to bend or arch upwards from the package or which otherwise highlights the location of the tab for pulling 634.
[0075] As mentioned above, additional flap handling features can be incorporated into the packaging to highlight the packaging opening feature or otherwise provide additional indication about it. In one approach, shown in Figures 28 to 31, package 75 includes a pop-up cut 786. The pop-up cut 786 can be a partial depth cut that is formed inside, or close to, the flap to pull up 734. Specifically, the pop-up cut 786 can be partially arranged through the first layer of outer film, so that the pop-up cut 786 is not fully laid out through the first layer of outer film 712. It is expected that the pop cut -up 786 can be formed from an outer surface of the first film layer 712.
[0076] The laminated flexible film mat 711, which forms the package 75, has coextensive film layers 712, 714. As shown in Figure 31, there is an adhesive-free area 778 between the first and second layers of film 712, 714 which is arranged in the area where the sealing claws create the sealing area 764 that forms the end seal 722. Thus, in addition to the pop-up cut 786, the pull tab 734 may have undergone heat treatment in the seal edge, which can create irregularities in the flap to pull 734 if the material of the first outer film layer 712 is susceptible to this deformation. The laminated mat 711 is similar to the laminated mat 611 illustrated in Figure 27, with the addition of the pop-up cut 786. In this way, the external partial depth cut 746 defines the sealing panel 780 which is lifted upwards to expose the opening of the package 738 defined by the internal partial depth cut 748. Additionally, the configuration of the external partial depth cut 748 defines the general shape of the flap for pulling 734. In addition, although the external partial depth cut 746 is illustrated as a closed loop, other configurations are contemplated, so that the rear edge of the sealing panel cannot be defined by the external partial depth cut 746. In this configuration, the external partial depth cut 746 can end, for example, in tear-limiting ends, such as a hook configuration.
[0077] In another approach, the flexible film laminate 811, shown in Figure 32, is configured so that the adhesive-free area 878 is not arranged in the sealing area 864, but instead, the adhesive-free area 878 and the displacement flap 834 are arranged on the body of the package between the end seals. As shown, the adhesive-free area is arranged outside the sealing area 864 and the pull tab 834 is therefore not subjected to heat treatment. The pull tab 834 does not include a pop-up cut 886 formed through a portion of the first film layer.
[0078] Another embodiment, shown in Figures 33 to 35, includes a package 95 with a pull tab 934 that has a small portion or a tip of tab 988 therefrom arranged in the sealing area. The tip of the flap 988 will therefore be subjected to heat treatment which can create irregularities in this portion of the flap for pulling 934 (if the skin material is susceptible to such deformation), which therefore creates an anterior edge of the flap for pulling 934 more noticeable or recognizable. In addition, since only a small portion of the 934 pull tab has undergone such treatment, most of the 934 pull tab maintains its uniform appearance, similar to the rest of the packaging. Package 95 also includes a pop-up cut 986, similar to the one discussed above, arranged in a V-shape. Additionally, a variety of shapes can be used to create the pop-up cut, such as, for example, a bow, a straight line, waves and closed shapes, to mention a few options.
[0079] Figure 36 illustrates another laminate 1011 which is similar to the laminate used to create package 95. The laminated mat 1011, however, includes a pop-up cut 1086 configured differently. As shown, the laminated mat 1011 has a pull tab 1034 with a tip of the tab 1088 which is disposed within the sealing area 1064 which will be treated during the formation of the package. In addition, the laminated mat 101 includes a linear pop-up cut 1086 arranged at the edge of the heat treated area of the flap tip 1088. In this way, the flap tip 1088 will be heat treated to create irregularities in that portion of the flap to pull 1034 and the heat treatment will not create irregularities that extend beyond the tip of the flap 1088. Also illustrated in Figure 36 is the adhesive-free area 1078 that extends the entire width of the laminated mat 1011. While the adhesive-free areas previously shown had the pattern applied to them, the 1078 adhesive-free area can be formed by a wrist adhesive application. More particularly, as the pressure-sensitive or resealable adhesive is coated between the first and second film layers of the laminated mat 1011, an application tool can apply the adhesive to a certain point or pulse and then the application tool you can refrain from applying any adhesive to that portion of the first or second layer of film.
[0080] Figure 37 illustrates yet another laminated blanket 1111 that is similar to laminate 1011, but with a slightly different pop up cut 1186. More particularly, while the pop-up cut 1086 is a linear cut across the width of the pull tab 1034, the pop-up cut 1186 is a linear cut along the longitudinal axis of the pull tab 1134. As illustrated, the pop cut -up 1186 extends from an anterior edge of the flap to pull 1034 along a central longitudinal axis of the laminated mat 1111 where the pull tab 1134 is arranged, but the pop-up cut 1186 ends at a distance before the edge of the area free of adhesive 1178 and the location of the internal partial depth cut 1148 that subsequently forms the opening of the package.
[0081] Figure 38 illustrates a configuration similar to that of Figure 37. More particularly, the laminated mat 1211 includes a pull tab 1234 with a pop-up cut 1286 disposed through a portion of a first layer of outer film. The pop-up cut 1286 has a curved configuration that corresponds to the curvature of the external partial depth cut 1246 that forms the sealing panel 1208 which is pulled upwards to subsequently expose the opening of the package.
[0082] In another configuration, a laminated mat 1311, shown in Figures 39 and 40, includes both a full depth cut 1354 that defines an anterior edge of the flap for pulling 1334 and partial depth cuts 1350 that define, in part, a rear edge of the cutting portion 1370 (see, for example, Figure 42) that forms a portion of the pull tab 1334. In addition, the pull tab 1334 additionally includes a pop-up marking 1386 which is arranged through a portion of the first outer film layer 1312. In summary, laminated mat 1311 is similar to laminated mat 11, with the addition of the popup tag 1386. As shown in Figures 41 and 42, package 135 formed from laminated mat 1311 includes a feature opening opening 1308 which includes opposite gripping portions 1336, a pull tab 1334 and a pop-up marking 1386 that creates tension in the film to create irregularities that call attention to the presence of the pull tab 1334 of the opening feature that of packaging 1308.
[0083] Another configuration of the package is shown in Figures 43 and 44. The package 145 includes a full depth cut and an area free of adhesive 1478, as shown in Figure 45. Additionally, the full depth cut 1454 extends across the entire thickness of the flexible film laminate. In addition, the full depth cut 1454 extends from a portion of the outer partial depth cut 1446a to another portion of the outer partial depth cut 1446b, as shown in Figure 45. Thus, the outer partial depth cuts 1446a, 1446b connect with the full depth cut 1454 that forms the front edge of the flap for pulling 1434. In this configuration, a single die forms both cuts, but the portions of the die may have different depths that form varying cuts.
[0084] The laminated mat 1411 forming the packaging 145 does not include an internal partial depth cut in the sealing area to form a cut portion of the second film layer. Instead, the pull tab 1434 has no pressure sensitive or resealable adhesive disposed on it, and instead has an adhesive-free area 1478 arranged at the location of the pull tab 1434. In this way, a consumer or user can manually grab the gripping edge 1456 of the flap to pull 1434 and pull it upward on the first layer of film 1412. In the packaging configuration 145, the opposite gripping flap 1436 is defined by an outer outer edge of the packaging, formed by a straight knife.
[0085] In another configuration, similar to Figure 45, a package formed from a laminated blanket includes an adhesive-free area that can have a partial depth cut arranged where the full depth cut 1454 is located in Figure 45. In a packaging formed with this configuration, the pull tab remains the same as shown in Figures 43 and 44. However, the second film layer disposed below the pull tab is anchored to the surrounding second film layer, which helps to prevent a consumer accidentally lifts a portion of the second film layer, which could break the adjacent end seal.
[0086] As illustrated above, various geometry configurations can be used for the packaging opening feature, and the opening and opening feature may depend on the products being packaged. Figure 46 illustrates a laminated mat 1511 which is used to form a package 155 shown in Figures 47 to 49. Package 155 includes an opening 1538 that is arranged closer to the package opening feature 1508 than those previously discussed, so that the opening is larger and arranged closer to the end seal 1522. As shown in Figure 46, the internal partial depth cut 1548 is partially arranged within the end seal area 1564, so that when package 155 is formed, the opening of the package starts directly adjacent to the end seal 1522 without completely breaking the end seal 1552. In this way, the opening 1538 can be quite large without breaking or completely destroying the end seal and its sealing properties. Figure 47 illustrates how package 155 is similar to Figure 18 in the closed configuration. As the pull tab 1534 is lifted from the rest of the package 155, the opening of the package 1538 is exposed earlier and closer to the end seal 1522 than the opening of the package 35 in Figure 18. Thus, the opening packaging 1538 is larger than the other openings and allows greater access to food products or other content contained in the packaging 155.
[0087] Another exemplary embodiment, shown in Figures 53 to 55, includes a 1905 package formed from a 1913 film that has a first seal 1922, a second seal 1926 and a longitudinal seal (not shown). The 1905 packaging is similar to the packaging 15 discussed above, so the packaging is not intended to be resealable. Thus, there is probably no resealable adhesive on the 1905 package. The 1905 package does not include asymmetrical front and rear packaging ends 1966, 1967. These 1966, 1967 packaging ends can be formed by an asymmetric separation cut which is formed between the adjacent packaging end seals in a series of packages.
[0088] In addition, the 1905 package may have an asymmetrical full depth cut 1954 that is arranged completely through an upper portion of the end of the package. When formed, the 1954 full depth cut will be completely arranged across the entire 1911 laminate, shown in Figure 55. The 1954 full depth cut has an asymmetrical shape that forms an asymmetrical 1934 pull tab. In addition, the full depth cut 1954 has reverse perforations 1990, as shown in Figure 55. This deposit area of the film between the portions of the 1954 full depth cut helps to keep the various portions of the 1913 film in relation to each other after the formation of the 1954 full depth cut .
[0089] The 1905 package may also include a 1947 partial depth cut. As shown in Figure 54, the 1947 partial depth cut may have an asymmetric configuration. Additionally, this 1947 partial depth cut extends upward through the first 1922 end seal, but does not affect the initial packaging seal because it is only partially passed through the 1913 film. As shown in Figures 53 and 55, the depth cut partial 1947 and full depth cut 1954 can extend adjacent each other. In this way, a single die can be used to form both cuts, with the die portion forming the 1954 full depth cut being longer than the die portion that forms the 1947 partial depth cut.
[0090] When opening the packaging, the user or consumer will hold the flap to pull 1934 from the 1908 packaging opening feature and pull it upwards, which will tear or break the 1913 film along the partial depth marking line. 1947 which extends through the first seal 1922. As can be shown in Figure 54, the package 1905 is opened by pulling the flap 1949 of the film 1913 to the left of the package, so that it is disposed adjacent to the opening, as opposed to the package 15, where the pull tab 134 is generally pulled down in the middle of the package.
[0091] Despite the difference in the appearance of the package, the 1905 package works similarly to the package 15. For example, the 1932 gripping portions include the 1934 gripping flap and an opposite 1936 gripping portion or flap. , the opposite gripping portion 1936 does not include a completely separate portion. The portion forming the gripping portion 1936 is formed by a full depth cut 1954 that ends within the first seal 1922 and ends close to the partial depth cut 1954, so that the film can be opened during manual opening operation. Both the full depth cut 1954 and the partial depth cut 1947 can have an end 1955, 1957 that ends in a tear inhibition configuration, so that the spread of the tear is limited at the end point. The 1954 full depth cut and the 1947 partial depth cut can be formed in several ways. In one configuration, the asymmetric partial depth marking 1947 is formed as a controlled tear by forming a marking line of about 50% through the film with a laser press.
[0092] Figures 56 to 59 illustrate a 2005 packaging suitable for packaging various products, including those in tablet form, such as chocolate bars. The 2005 package includes a first layer of film 2012 and a second layer of film 2014. The first layer of film 2012 is arranged over a portion of the width of the second layer of film 2014 and along the entire length of the second layer of film 2014 , similar to package 5 of the Figure. 1. In addition, a resealable adhesive can be used between the portions of the first and second layers of film 2012, 2014. In some configurations, the resealable adhesive is disposed continuously between the first and second layers of film 2012, 2014 .
[0093] The 2005 package additionally includes a first end seal 2022, a second end seal 2026 and a longitudinal end seal (not shown). In an illustrative embodiment, at least the first end seal 2022 is a cold seal, so that the layers of film that form the seal can be pulled away from each other within the seal, as opposed to breaking or separating the layers. of the film itself. As understood in the art, a cold seal can be produced by an adhesive that can seal only itself (the film can be corona-treated, an initiator, coating or other surface treatment to bond with the sealing adhesive cold) and the cold sealing adhesive requires only contact pressure to bond. It is envisaged that an adhesive failure or a cohesive failure can be used for cold sealing, although if a cohesive failure is employed, damage or alteration to the structure of the originally formed film is expected to be minimal. More specifically, depending on how the adhesive or cohesive is applied to the cold seal, the failure can occur within the adhesive or the cohesive itself or at the interface or connection between the film and the adhesive or cohesive.
[0094] Regarding the 2005 packaging that has a 2006 chocolate bar on it, the first layer of film 2012 can cover almost the entire top of the packaging. Additionally, it is anticipated that the resealable adhesive 2016 can be continuously disposed between the two layers of film 2012, 2014 without interruption, although other configurations can also be used. Similar to some of the packages described above, a 2080 sealing panel can be formed within the first layer of film 2012. The 2080 sealing panel is raised to expose an opening 2038 inside the 2005 package that provides access to its contents, such as the bar. chocolate 2006. The sealing panel 2080 is formed in the first layer of film 2012 by an external partial depth cut 2046 formed within the first layer of film 2012.
[0095] After the sealing panel 2080 is created by forming the external partial depth cut 2046 within the first film 2012, the matrix or the remainder of the first layer of film 2012 that does not form the sealing panel 2080 could be removed from the packaging. In an exemplary embodiment, however, the 2081 matrix is retained on top of the 2005 packaging and can help retain the packaging format during opening and closing operations. For example, having a substantial 2038 opening in the 2005 packaging may result in some warping occurring on the sides, corners or other transition points of the opening. If the 2081 matrix is retained on top of the 2005 packaging, the 2081 matrix can stiffen the second layer of film 2014 that forms the remainder of the package to help the 2005 package retain its shape and reduce the potential warping of the film. In some embodiments, the 2081 matrix can extend along the edges of the first layer of film 2012 in almost all or the entire length of the package. In other embodiments, the first layer of film 2012 and the matrix can extend over almost the entire width of the package, up to and including the area that forms the longitudinal end seal. In other configurations, the matrix 2081 can be arranged only on the front edge of the package 2005, so that the sealing panel 2080 extends over the entire width of the first layer of film 2012.
[0096] The packaging opening feature 2008, as shown in Figure 58, is formed from several cuts through different layers of film. These cuts can extend into the portions of the film that form the first end seal 2022 (shown in Figures 58 and 59 on the dashed lines), which is a cold seal, as discussed above. The 2008 opening feature includes two 2054 full depth cuts, illustrated parallel to each other in this modality. The full depth cuts 2054 extend from a front edge of the 2066 package to the beginning of the outer partial depth cuts 2046 that form a portion of the sealing label 2080. Additionally, the full depth cuts 2054, along with a front edge 2066 of the packaging, form three sides of the flap to pull 2034. The full depth cuts 2054 are arranged across the entire thickness of the first and second layers of film 2012, 2014 from the top end of the 2005 packaging. Thus, similar to the packaging previously discussed, when a laminate forming a series of 2055 packages is formed, the full depth cuts 2054 are formed across the entire film laminate.
[0097] The rear edge 2033 (see, for example, Figure 57) of the pull tab 2034 is formed by a partial depth cut 2050 (shown in the dashed line in Figure 58) through the second layer of film 2014. The cut 2050 partial depth can extend into the resealable adhesive 2016, between the film layers, and may even lightly enter the first film layer 2012 that forms the 2080 sealing panel. The 2050 partial depth cut, however, does not extends completely through the first layer of film 2012 that forms the sealing panel 80. Instead, the pull tab 2034 remains attached to the rest of the sealing panel 2080 and operates to assist a user or consumer in lifting the 2080 sealing panel and exposing opening the 2038 package.
[0098] The opening of package 2038 is formed by another cut of partial depth 2048 through the second layer of film 2014. As shown in Figure 58, the cut of internal partial depth 2048 is formed in the second layer of film 2014 and the end above begins at a location that corresponds to the first end seal 2022. Thus, when the flap 2068 is lifted with the seal panel 2018, a portion of the first end seal 2022 is broken. However, the remainder of the first end seal 2022 that is not formed by the portion of the second film layer 2014 that forms the flap 2068 remains in the position that forms the remainder of the first end seal 2022. Additionally, the first end seal 2022 is a cold seal, so that the cohesive or adhesive between the two portions of the second layer of film 2014 that forms the end seal 2022 retains some of its adhesive properties after the first end seal 2022 has broken. In this way, the 2068 flap can be adhered to the rest of the container, which helps to reseal the packaging. This adhere-to-close feature is in addition to the resealable adhesive 2016 between the 2080 seal sticker and the second 2014 film layer that forms the resealable seal around the opening of the in addition 2038 packaging.
[0099] Figure 59 illustrates a 3005 package, similar to 2005 packaging, but with the addition of 3082 packaging integrity features and a slight adjustment of the 3048 internal partial depth cut location. In this configuration, the internal partial depth cut 3048 is located just outside the first end seal 3022 and is arranged at a distance from the end seals. The 3082 packaging integrity feature includes small strips of film that extend and break at the time of initial opening, to provide an indication that the 2005 packaging was previously opened after that initial opening. Several different integrity features can be incorporated into the packaging described here. Additionally, package 3005 has the internal partial depth cut of flap 3050 just inside the first end seal 3022. In this way, a small portion of the rear edge of the flap for pulling 3034 will have cohesive or adhesive properties on it.
[00100] In addition to tablet products, the 2005 packaging can be particularly useful for products that require a strong resealing or resealing feature. The resealable adhesive 2016 between the sealing panel 2080 and the second layer of film 2014 helps in the formation of an airtight seal around the opening and, due to the fact that the 2048 partial depth cut can be arranged, in part, within the first area seal 2022, the cohesive or adhesive that forms the cold seal may retain some adhesive properties, so this substance helps to stick the inner flap 2068 back to the rest of the 2005 packaging.
[00101] Individuals skilled in the art will recognize that a wide variety of modifications, changes and combinations can be made with respect to the modalities described above without departing from the scope of the invention and that such modifications, changes and combinations must be viewed as within the scope of the concept of the invention.

权利要求:
Claims (8)
[0001]
1. Packaging (5), comprising: a flexible film laminate (10) having at least one first and a second film layer (12, 14), the flexible film laminate (10) defining at least part of an internal cavity (18) and at least the second film layer (14) of the flexible film laminate (10) which has: a first pair of edge portions (20) forming a first end seal (22), a second pair of edge portions (24) forming a second end seal (26), and a third pair of edge portions (28) forming a longitudinal seal (30) extending from the first end seal (22) up to the second end seal (26); the flexible film laminate (10) having a first side, a second side and a thickness of laminate between them, the second side of the flexible film laminate (10) oriented towards the inner cavity (18) of the package (5); the package (5) characterized by the fact that it comprises gripping portions (32) formed in the flexible film laminate (10) adjacent to the first end seal (22), the gripping portion (32) having an opposite gripping flap ( 36) and a pull tab (34) which has a first position when the package (5) is closed and a second position when the pull tab (34), a portion of a sealing panel (80) of the first film layer (12) and a flap (68) of the second film layer (14) are arranged upwardly from a remainder of the package (5) to expose an opening of the package (38); and an external partial depth cut (46) extending from the first side of the flexible film laminate (10) through at least a portion of the first film layer (12), the external partial depth cut (46) forming a narrowing portion (60) in the first film layer (12) to facilitate lifting the sealing panel (80) of the first film layer (12) from the remainder of the package (5), wherein the flap (68) ) of the second film layer (14) and a rear edge of the pull tab (34) are defined by internal partial depth cuts (48, 50) on the second side of the flexible film laminate (10) through at least a portion of the second film layer and a gripping edge (56) of the pull tab (34) is defined by a complete cut (54) through the entire thickness of the flexible film laminate (10) and the opposite gripping flap (36) ) is defined between a front edge (66) of the package (5) and the complete cut (54), in which the complete cut to (54) crosses the external partial depth cut (46), and in which the gripping edge (56) is displaced from the front edge (66) of the package (5).
[0002]
2. Packaging (5) according to claim 1, characterized in that the gripping portions further comprise an opposite gripping flap defined by the front edge (66) of the packaging.
[0003]
Packaging (5) according to claim 2, characterized in that it further comprises an extension portion defined by the front edge (66) of the package and a corresponding cut portion defined by a rear edge of the package.
[0004]
4. Package (5) according to claim 3, characterized in that the opposite gripping portion is arranged over the extension portion of the packaging (5) and the pull tab (34) is partially arranged over the portion extension of the packaging (5).
[0005]
5. Package (5), according to claim 4, characterized by the fact that the complete cut (54) is a line cut disposed on the extension portion and extends from a first extension edge to a second extension.
[0006]
6. Packaging (5), according to claim 1, characterized by the fact that the first layer of film (12) extends at least to one of: partially over the second layer of film (14) and is arranged in at least at least a portion of the first end seal (22); into the third edge portions (28) of the second film layer (14) and extends from the first end seal (22) to the second end seal (26); and on the second film layer (14), so that the first and second film layers (12, 14) are coextensive with each other.
[0007]
7. Packaging (5) according to claim 1, characterized in that it additionally comprises a resealable adhesive (16) disposed between at least portions of the first and second layers of film (12, 14) and the sealing layer of the the first film layer (12) is resealable with respect to the second film layer (14) with the resealable adhesive (16) disposed between the first and second film layers (12, 14).
[0008]
8. Package (5) according to claim 1, characterized in that the pull tab (34) additionally comprises a cut portion of the second film layer (14) defined by the complete cut (54) and a portion of the external partial depth cut (46) arranged in the first end seal (22).

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同族专利:

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公开号 | 公开日

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US9676537B2|2017-06-13|

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CN105026285A|2015-11-04|

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MX360272B|2018-10-26|

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US20160016714A1|2016-01-21|

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PL2969836T3|2018-09-28|

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EP2969836B1|2018-05-09|

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RU2015130275A|2017-04-18|

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MX2015011565A|2016-02-03|

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CN105026285B|2017-11-03|

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WO2014164416A1|2014-10-09|

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AU2014249394B2|2016-12-01|

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EP2969836A1|2016-01-20|

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AR095210A1|2015-09-30|

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AU2014249394A1|2015-07-23|

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ES2678678T3|2018-08-16|

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BR112015020719A2|2017-07-18|

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RU2626712C2|2017-07-31|

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法律状态:
2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2019-11-19| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

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2020-12-15| B09A| Decision: intention to grant|

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2021-02-23| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/03/2014, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US201361776659P| true| 2013-03-11|2013-03-11|

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US61/776,659|2013-03-11|

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PCT/US2014/022380|WO2014164416A1|2013-03-11|2014-03-10|Package opening feature and methods of manufacturing same|

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