• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention is directed to a method for manufacturing a plastic composite using recycled thermoplastic material. The method consists of the following steps: i) Providing flakes of thermoplastic materials to be recycled; ii) Mixing the thermoplastic flakes, thereby forming a thermoplastic matrix with a first melting temperature. iii) Forming or providing a fabric structure of a predetermined thickness from fibers with a second melting temperature that is higher than the first melting temperature; iv) Evenly distributing the thermoplastic matrix of thermoplastic flakes over the fabric structure, v) Optionally forming or providing a second fabric structure and placing it over the thermoplastic matrix, vi) Optionally repeating steps iv and v, and vii) heating the fabric to a temperature between the first and second temperature using a thermoforming process.
    公开号:BE1025062B1
    申请号:E2018/5223
    申请日:2018-04-03
    公开日:2018-10-15
    发明作者:Koen Verhaert；Rudy Galle；Visschers Jules Dierickx
    申请人:Eco-Oh! Innovation Nv；
    IPC主号:
    专利说明:

    Process for the manufacture of recycled plastic composite
    FIELD OF THE INVENTION
    The present invention generally relates to methods for manufacturing a plastic composite. More specifically, the present invention relates to methods for manufacturing a plastic composite using non-woven recycled thermoplastic material.
    BACKGROUND OF THE INVENTION
    Plastic has become the most widely used material in the entire industry for forming a variety of products for both household and commercial purposes. Accordingly, a significant increase in plastic production has occurred over the years and this has contributed significantly to the increased burden of solid waste. Due to their properties, plastics are a particularly difficult form of waste because they do not decay quickly.
    In order to reduce the costs associated with sourcing raw materials, wasting natural resources for the manufacture of disposable products and minimizing possible negative effects on the environment, continuous efforts have been made to develop methods for recycling used thermoplastic materials that would otherwise be incinerated or deposited in a landfill.
    In one such application of recycled thermoplastic materials, a variety of thermoplastic composite plates / panels have been developed. Such thermoplastic composites, generally made by non-woven methods, include fiber materials that are reinforced in the recycled thermoplastic materials. These thermoplastic composites offer a number of advantages, for example they can be molded and molded into a variety of suitable products, both structural and non-structural, including, among others, parking plates, billboards, car panels, load carriers (crates, boxes, pallets, etc.). ) and many others.
    However, the use of recycled materials for the manufacture of thermoplastic composites has its own disadvantages. For example, recycling of various lightweight thermoplastic products, e.g., disposable gloves, aprons, air filters, protective covers, plastic covers, polythene, etc., is generally not preferred because their use often results in products with physical properties that are generally less acceptable than products made from strong thermoplastic materials. Accordingly, these types of products remain 'waste', and therefore continue to be dumped in landfills or incinerated, and thus have harmful effects on the environment.
    In some recent efforts, such shortcoming with the lightweight thermoplastic material is solved by using a method in which lightweight plastic materials such as polypropylene (PP) or polyethylene bags, films, rags, or the like are first washed in a centrifuging process, torn and then torn melted and reprocessed into a crude pellet form. Although this process is generally effective for providing desired properties to the output products - it required the individual melting processes to form pellets, which inevitably adds costs to the process and thus, to the final recycled product.
    As a result, there is a need in the art for a time-efficient as well as a cost-efficient method for forming thermoplastic composites made from recycled materials, with properties of impact strength, brittleness, swelling, heat resistance, heat retardation, dimensional stability, wear resistance that is at least comparable to products made with new materials.
    Moreover, in view of a continuously increasing complexity of packaging material, in particular multi-layer bags, e.g. shrink bags, and hybrid bags and films, and consequently increasing difficulties for recycling these materials, the object of the present invention is to provide a method to provide for efficient recycling of these.
    Summary of the invention
    The present invention is made in view of the above problems, and discloses a method for manufacturing a plastic composite using non-woven recycled thermoplastic material. The method consists of the following steps: i) Providing flakes of thermoplastic materials to be recycled; ii) Mixing the thermoplastic flakes, thereby forming a thermoplastic matrix with a first melting temperature. iii) Providing or forming a fabric structure of a predetermined thickness from fibers with a second melting temperature that is higher than the first melting temperature; iv) evenly distributing the thermoplastic matrix of thermoplastic flakes over the fabric structure, v) Optionally providing or forming a second fabric structure and placing it over the thermoplastic matrix, vi) Optionally repeating steps iv and v, and vii) heating the fabric structure (s) including the thermoplastic matrix using a thermoforming process.
    A particular advantage of this method is that it provides a very efficient process that allows for the recycling of increasingly complex packaging material, in particularly multi-layer bags (e.g. shrink bags) and hybrid bags and films.
    In general, the size of thermoplastic flakes varies between 3 mm and 25 mm.
    In a preferred embodiment, steps iv) and v) can be repeated up to 7, 10 or 20 times before the structure is heat-reinforced.
    Reinforcement of the fabric structure by thermoforming can be carried out at a temperature between the first and second temperature, such that the thermoplastic matrix melts at least partially, and preferably substantially completely, and such that the fibers with a second melting temperature do not melt. In some embodiments, the thermoforming processing temperature may be between 190 ° C and 250 ° C, or between 190 ° C and 230 ° C, or between 190 ° C and 210 ° C, or around 200 ° C. The resulting plastic composite is a rigid composite panel, a rigid composite plate or a rigid composite board.
    Alternatively, reinforcement can be performed in a two-step thermoforming process. In a first step, thermoforming is carried out at a temperature lower than the first melting temperature (e.g. between 90 and 120 ° C) but higher than the softening temperature of the thermoplastic matrix such that the thermoplastic matrix absorbs sufficient heat energy for softening and adhering sufficiently for bonding the fibers and thermoplastic matrix, which partially results in a flexible semi-finished product, e.g., a flexible mat.
    Such a flexible mat is easily foldable and transportable, and is a valuable semi-finished product that can be divided for subsequent thermoforming in a second step. In the second step, thermoforming is carried out at a temperature between the first and second temperature to further reinforce and form the finished plastic composite. Optionally, a number of flexible mats can be joined together to be exposed to the second thermoforming step, resulting in a rigid composite panel, a rigid composite plate, a rigid composite board of higher thickness.
    Possibly, the method further comprises forming a variety of recycled plastic composites and interconnecting them to form a multilayer recycled plastic composite.
    Furthermore, the variety of plastic composites may possibly be interconnected by methods such as, but not limited to, thermal pressing, vacuum forming, gluing, welding, or the like.
    The thermoplastic matrix of flakes generally comprises lightweight thermoplastic (generally with a lower specific gravity or lower bulk density than water) such as plastic films, plastic bags, plastic gloves, films, or the like. Preferably, its melting temperature (further referred to herein as the first melting temperature) is lower than 200 ° C, or lower than 190 ° C.
    The fibers with a second melting temperature that is higher than the first melting temperature can be natural fibers, preferably non-frayed natural fibers, and / or thermoplastic fibers and / or glass fibers and / or metal fibers.
    The natural fibers can be one of but are not limited to natural raw fibers such as jute, hemp, coconut, flax, sisal, or the like.
    Possibly, the thermoplastic fibers with the second melting temperature can be one of, but not limited to, polyesters, ABS (acetylbutylstyrene), PS (polystyrene), nylon, PA (polyamide), or the like.
    The second melting temperature can be at least 10 ° C higher than the first melting temperature, or at least 20 ° C higher, or at least 30 ° C higher, or at least 50 ° C higher. In some embodiments, the second melting temperature can be at least 210 ° C, or at least 220 ° C, or at least 240 °, or at least 260 °
    In a method of the present invention, the second melting temperature and thermoplastic matrix fibers may be present in a ratio of less than 50:50 by weight, or less than 30:70 by weight, or less than 20:80 by weight, and preferably in a ratio of 10:90 on a weight basis.
    Optionally, the grind of plastic materials with a higher density and / or higher bulk density than water (e.g. ABS, PS, PVC) is moreover evenly distributed over the fabric structure (s) or may be part of the thermoplastic matrix to be distributed. This can result in a plastic composite with a lower brittleness. This type of milling material can make up between 5 and 20 weight percent, or between 10 and 20 weight percent, of the total amount of milling material including flakes in the plastic composite.
    Furthermore, optionally also glass fibers or natural fibers can be evenly distributed over the fabric structure (s). This can result in higher stiffness and / or lower thermal expansion.
    Further optionally, the method comprises treating the plastic composite with a finishing material such as but not limited to antimicrobial coating, wax, paint, varnish, or the like.
    The thermoforming process can be one of, but not limited to, processes such as thermal bonding, steam heating, microwave heating, hot pressing, pressure forming, vacuum forming, or the like. The processing temperature in thermoforming must be between the first and the second melting temperature, such that the thermoplastic matrix melts at least partially, and preferably substantially completely, and such that the fibers with second melting temperature do not melt. In some embodiments, the thermoforming processing temperature may be between 190 ° C and 250 ° C, or between 190 ° C and 230 ° C, or between 190 ° C and 210 ° C, or around about 200 ° C.
    In another aspect of the present invention, a plastic composite is disclosed. The plastic composite consists of lightweight thermoplastic that is interwoven with fibers.
    The plastic composite may comprise between about 5% to 50%, or about 5% to 30%, or about 5% to 20%, and preferably around about 10% to 20% by weight of fibers with a second melting point.
    Further, the composite may comprise between about 50% to 95%, or about 70% to 95%, or about 80% to 95%, and preferably around about 80% to 90 percent by weight of thermoplastic flakes.
    In yet another aspect of the present invention, a multi-layer plastic composite that is formed using recycled plastic and fibers is disclosed.
    Detailed description of the preferred embodiments
    The present application describes a method for forming a plastic composite from recycled thermoplastic materials using a simple, cost-efficient method. The method uses lightweight plastic materials such as but not limited to plastic films, films, plastic bags, etc. to form a plastic composite with suitable mechanical properties, high heat resistance, high impact strength, load resistance, and very good dimensional stability. The constructed plastic composite is useful for forming varieties of panel plates, such as a building fence board, billboards, plastic road plates, load carriers such as boxes, crates, pallets, or the like. It will be appreciated that while the current disclosure has been explained only for lightweight recycled thermoplastic materials such as films, bags, films, etc., the current method can be used for generally all types of thermoplastic materials.
    In an embodiment of the present invention, a plastic panel can be constructed from a thermoplastic composite in accordance with one aspect of the present invention. The thermoplastic composite is, at least in part, constructed, from used, recyclable, thermoplastic material. The thermoplastic material is generally a thermoplastic matrix comprising one or more lightweight (i.e. with a specific weight and / or bulk density lower than water), thermoplastic materials in the form of flakes with a size in the range of 3 mm to 25 mm . The thermoplastic composite further comprises a core of fibers, generally entangled and bonded in a three-dimensional fabric structure with the thermoplastic matrix.
    In an embodiment of the present invention, the thermoplastic panel can be formed from a multilayer thermoplastic composite. The multilayer composite comprises a first layer of thermoplastic composite attached and / or bonded to an adjacent second layer of thermoplastic composite. In some examples, the layers can be of equal thickness. In some other embodiments, the layers can be of different thickness. In some examples, the first layer and the second layer are both formed from the same thermoplastic materials in the same composition. In some other examples, the first layer and the second layer can be formed using different types of thermoplastic materials, thereby providing different properties to each of them. Accordingly, by enclosing alternating layers of different materials, the multilayer composite can exhibit desirable properties, such as high chemical, thermal, and mechanical resistance, high strength, or the like.
    The thermoplastic composite may further comprise one or more layers of finishing materials applied to an upper and / or lower surface of one or more separate layers of the thermoplastic composite. In an embodiment of the present invention, the finishing material comprises one or more antimicrobial coatings of material such as antibacterial agent, antifungal agent, or the like. In another embodiment, the finishing material may comprise washing solutions, paint, or the like.
    The thermoplastic materials suitable for use in this invention generally consist of various types of lightweight plastic components derived from the recycled objects such as flexible films and / or sheets obtained from commercial labels, and / or bags, and / or containers, and / or casings, preferably for use in the food and / or agricultural sector, preferably made of at least one material from PE, PET, PVC, PP, PS, which cannot normally be reused and which are usually are dumped or incinerated at a landfill due to costs, melting / gluing, or contamination problems.
    Some other non-limiting examples of suitable thermoplastic materials include a product selected from the following group of resins: ABS, acrylic, high-density polyethylene (HDPE), low-density polyethylene (LDPE), polyethylene terephthalate (PET), polyvinyl chloride (PVC) , polypropylene (PP) and polystyrene (PS). Current recycled plastics that are the most readily available are products made from PET and HDPE and include plastic bottles, containers and packaging, plastic lumber, etc., all identified with one of the acceptable recycling symbols including: "high density white plastic" means containers and packages made of white or translucent plastics such as containers for white detergent, containers for wiper fluid, etc.
    Other examples of thermoplastic materials include, the commercial plastic labels applied to containers, boxes, cans, bottles containing food products, etc .; transparent, semi-transparent and opaque bags containing fresh foodstuffs and / or foodstuffs with a long service life; bags for agricultural products such as fertilizers, manure, seeds, etc .; transparent, semi-transparent and opaque impenetrable tarps; bags for waste, food, products and goods, etc .; thermoplastic packaging of mono and multi-product packaging, etc. and / or any suitable combination thereof.
    The fibers with a second melting temperature that is higher than the melting point of the thermoplastic matrix for use in manufacturing the plastic composite can include thermoplastic fibers with a higher melting point than the melting point of the thermoplastic matrix, and / or glass fibers, and / or metal fibers, and / or a matrix of natural fibers, preferably non-frayed, obtained by processing intertwined natural raw fibers using conventionally available tools such as, for example, a bast fiber opening machine, or a tearing machine, or the like.
    The term "natural fibers" as used herein refers to any continuous filament derived from natural, renewable resources such as plants or animals. The words 'fibers' and 'fibers' are used interchangeably. Natural fibers may include, but are not limited to, seed fibers such as cotton and kapok; leaf fibers such as sisal and agave; bast fibers or skin fibers such as flax, jute, kenaf, hemp, ramie, rattan, soy fiber, vine fiber, and banana fiber; fruit fibers such as coconut fibers; stem fibers such as wheat straw, rice, barley, bamboo, grass, and tree wood; animal hair fibers such as sheep wool, goat hair (cashmere, mohair), alpaca hair, horsehair; silk fibers; bird fibers such as feathers; Preferably, the natural fibers used in this invention should have at least moderate strength and rigidity and good formability. Fibers with larger diameters are also preferred because they offer greater fiber stiffness. Furthermore, the lengths of the natural fibers 130 can vary from about 50 mm to 400 mm, preferably from about 150 mm to about 350 mm.
    In an embodiment of the present invention, the natural fibers include natural raw fibers such as jute, hemp, coconut, flax, sisal, etc. In a more preferred embodiment of the present invention, jute fibers are used as natural fibers. The jute fibers inherit properties such as low density, low abrasive properties, high strength and therefore good dimensional stability.
    In a preferred embodiment of the present invention, the second melting temperature fibers may be synthetic thermoplastic fibers with a higher melting temperature than the thermoplastic matrix, such as polyesters, ABS, polystyrene, nylon, PA, or the like group fibers.
    A method according to the present invention may comprise a number of steps for obtaining flakes of thermoplastic material to be recycled, however, the order of the process steps disclosed below is exemplary for the sake of understanding the invention to those skilled in the art.
    In general, the set of thermoplastic flakes to be blended to form the thermoplastic matrix can be obtained in a ready-to-use configuration from various sources (e.g., external suppliers) that provide the recycled thermoplastic flakes. However, in some embodiments of the present invention, the collection of the thermoplastic flakes is obtained from a collection of thermoplastic material to be recycled.
    The collection of thermoplastic material generally comprises a thermoplastic material with low specific gravity and / or low bulk density that is mixed with thermoplastic materials with high specific gravity and / or high bulk density. The collection of received thermoplastic material is sorted based on various factors such as type of material, color of material, or the like, and is then crushed to form grind comprising flakes and grains. Standard reduction of plastics to grind is usually carried out by shredders and pelletizing machines. These machines have industrial blades that perform rotary cutting to finely chop the plastic, which is passed through a screen and then discharged to the next stage in the process. In embodiments of the present invention, the screen of the pelletizer may have a hole diameter that preferably ranges between 3 mm and 25 mm, or more preferably between 3 mm and 15 mm, and most preferably between 5 mm and 10 mm.
    Then grind with a higher specific gravity and / or higher bulk density is separated from grind with a lower specific gravity and / or lower bulk density; preferably by means of a centrifugal process, or by a flotation technique such as separation in water, whereby the thermoplastic flakes with a density and / or bulk density lower than water are separated from the flakes with a density and / or bulk density higher than water.
    In a next step, the grind with a lower specific weight and / or lower bulk density is processed to separate flakes from grains, for example by wind shifting.
    In the context of the present invention, flakes of grind are from plastic films, plastic bags, plastic gloves, and all types of plastic film or multilayer sheet material with a specific weight and / or bulk density lower than water. The size of these flakes is determined by passing through the screen of a pelletizing machine with a hole diameter which preferably varies between 3 mm and 25 mm, or more preferably between 3 mm and 15 mm, and most preferably between 5 mm and 10 mm.
    In a next step, fibers with second melting temperature are provided that undergo a tissue process, preferably a carding or needle punching process to form a homogeneously blended fabric structure. Weaving or related textile production processes, or ultrasonic welding can also be used.
    The carding process can, for example, be performed on a Rando machine or Laroche machine, or any other machine, as is already known in the art. Alternatively, the fabric is performed using any known mechanism such as a carding process, or the like. Carding is a mechanical process that detangles and blends fibers to form a continuous fabric suitable for subsequent processing. By using a carding process, a fabric structure can be produced to a very thin predetermined thickness (up to 16 g / m2).
    Ultrasonic welding can have an advantage in that the spacing between fibers can be variably selected such that flakes on both sides of the fabric structure can come into contact with each other, resulting in improved characteristics of the recycled plastic composite.
    Once the fabric structure has been formed, the method proceeds to a next step in which the lightweight thermoplastic matrix is uniformly spread, i.e., evenly distributed by uniform spreading, on the fabric structure. After spreading the thermoplastic matrix, a second fabric structure can be positioned on the thermoplastic matrix, as such with the lightweight thermoplastic matrix between two fabrics. The last two steps can be repeated a number of times resulting in layers of lightweight thermoplastic matrix spread between fabric fiber structures, resulting in very high volumes of thermoplastic matrix enclosed in the resulting plastic composite. Subsequently, the structure is heated using known mechanisms such as a thermoforming process. The thermoforming process used is, preferably, a thermo-bonding process in which the fabric structure obtained from the previous step is heated by passing it through heated calendar rolls. Alternatively, the reinforcement can be performed by other heating mechanisms that can raise the temperature in the fabric structure sufficiently to allow the thermoplastic materials to bond to each other and to the natural fibers. Such a mechanism may include, but is not limited to, hot pressing, vacuum forming, steam heating, microwave heating, or the like, already known in the art. As explained earlier, the reinforcement can be carried out by one-step thermoforming, or alternatively by a two-step thermoforming process.
    The method may further comprise an optional step in which two or more thermoplastic composites are produced. Thereafter, the two or more thermoplastic composites are joined together in a layered structure to form a multilayer thermoplastic composite. The layering can be performed using any of the conventionally known techniques such as one of, but not limited to, pressing, vacuum forming, gluing, welding, or the like. Furthermore, each layer of the multilayer thermoplastic composite can be formed from a similar or different thermoplastic material according to the desired application and properties of the thermoplastic composite to be produced.
    In some embodiments of the present invention, the method further comprises an optional step of treating one or more surfaces of the thermoplastic composite with a finishing material and / or post-treatment methods to impart selected properties to the composite. For example, one or more surfaces of the thermoplastic composite can be treated with an antimicrobial agent, an antifungal agent, or the like. Alternatively and / or additionally, the thermoplastic composite can be treated with finishing materials such as wax, paint, or the like.
    Industrial applicability
    The present invention relates to thermoplastic composite plates, mats or panels formed from recycled plastic materials, generally of low weight, and is useful for various applications such as traffic management products such as billboards, parking plates, road plates, other structural components formed from thermoplastic materials and required desired properties such as impact strength, swelling, heat resistance, heat retardation, dimensional stability, abrasion resistance, etc. at least comparable to conventional plastic sheets, mats or panels. In addition, by spreading recycled thermoplastic matrices over thin fiber weave requirement, very large volumes of recycled thermoplastic matrices can be enclosed in the resulting plastic composite.
    The thermoplastic composite may comprise about 10% to 50%, or about 10% to 30%, and preferably about 20% weight percent of reinforcement fibers with an average length of between about 50 mm and about 400 mm, and preferably between about 150 mm and about 350 mm. The thermoplastic composite generally comprises and about 50% to 90%, or 70% to about 90% and preferably about 80% weight percent of flakes of thermoplastic materials, with an average size in the range of about 3 mm to about 25 mm wherein the weight percentages are based on the total weight of the thermoplastic composite.
    The present disclosure further provides a method for manufacturing thermoplastic composite by recycling lightweight thermoplastic materials. The method is generally a simple, cost-efficient, time-saving, method for forming a high-quality thermoplastic composite using generally unused lightweight plastic waste such as plastic films, plastic bags, gloves, or the like, and / or combinations thereof. Usually, the use of such lightweight plastic materials requires an additional step of melting and shaping into granulates or pellets before they can be used to be used in the manufacture of thermoplastic composites. However, by using the method 400 in accordance with the present invention, the recycling process can be considerably and considerably shortened.
    Example: manufacture of a pallet: 85% by weight of recycled LDPE flakes from foils and bags shredded with a shredder with a screen with a hole diameter of 8 mm was mixed with 15% by weight of a mixture of ABS, PS and PVC granules of approximately the same size.
    Approximately 300 g / m2 of the above mixture was evenly distributed on a carded fabric structure of 70 g / m2 recycled PET fibers. This process was repeated twice and a finished fabric structure was placed on top, and ended up in a sandwich structure of 4 carded fabrics with the mixture of flakes and grains evenly spaced between them. As such, the total weight of the structure is approximately 1180 g / m2.
    This structure was thermoformed under pressure to an intermediate composite material with a thickness of 1 cm. The intermediate product is a flexible mat and can be rolled up to a bale of, for example, approximately 200 kg. 3 pieces of these flexible mats were laid on top of each other and pressed at 200 ° C to a total thickness of 9 mm, thereby forming a pallet.
    权利要求:
    Claims (15)
    [1]
    CONCLUSIONS
    A method of manufacturing a recycled plastic composite, the method comprising the steps of: i) providing flakes of thermoplastic materials to be recycled; ii) Mixing the thermoplastic flakes, thereby forming a thermoplastic matrix with a first melting temperature, iii) Providing or forming a fabric structure of a predetermined thickness of fibers with a second melting temperature higher than the first melting temperature iv) the evenly distributing the thermoplastic matrix of thermoplastic flakes over the fabric structure, v) Optionally forming or providing a second fabric structure and placing it over the rmop1as trs che mat rix, vi) Optionally repeating steps iv and v, and vii heating the fabric structure (s) using a thermoforming process.
    [2]
    The method of claim 1, wherein the thermoplastic flakes are obtained by a method comprising the steps of: i) providing one or more thermoplastic materials to be recycled; ii) Crushing the one or more thermoplastic materials into regrind; iii) separating the thermoplastic material flakes from the milled material.
    [3]
    The method of claim 1, wherein the thermoforming is a two-step thermoforming process; is.
    [4]
    The method of claim 3, wherein the variety of plastic composites in a layered structure can be joined using a process selected from, but not limited to, one of presses, vacuum forming, gluing, or welding.
    [5]
    A method according to claim 1 or 2, wherein the thermoplastic flakes come from materials from one or more of the group comprising plastic films, plastic bags, or any plastic plate or multilayer plate material with a specific weight and / or bulk density. lower than water.
    [6]
    The method of claim 1 or 2, wherein the fibers with. a second melting temperature include fibers from one or more materials from the group comprising glass fibers, polyester, ABS, polystyrene, nylon, PA, or the like, and / or combinations thereof.
    [7]
    The method of claim 1, wherein the fibers with a second melting temperature are natural fibers or metal fibers.
    [8]
    The method of claim 1, wherein the heating process is one of steam heating. i e - w a r m i n g, m i c r o g o 1 f f e r v includes heating, vacuum heating, or the like.
    [9]
    The method of claim 1, wherein the size of the flakes varies between 3 mm and 2.5 mm.
    [10]
    The method of claim 1, wherein the fibers with second melting temperature and thermoplastic matrix are present in a ratio of less than 50:50 by weight.
    [11]
    The method of claim 1, wherein the length of natural fibers varies between 50 mm to about 400 mm, and preferably between 100 mm and 300 mm.
    [12]
    12. A recycled plastic composite made with. using the method according to one of the preceding claims.
    [13]
    The plastic composite of claim 12, wherein the composite comprises between about 5% to 50% by weight of fibers with a second melting point.
    [14]
    The plastic composite of claim 12, wherein the composite comprises between about 50% to 95% by weight of the thermoplastic flakes.
    [15]
    A composite panel or load carrier made of a multilayer recycled plastic composite comprising a plurality of the connected plastic composites according to claims 12 to 14,
    类似技术:
    公开号 | 公开日 | 专利标题
    BE1025062B1|2018-10-15|Process for the manufacture of recycled plastic composite
    US4474846A|1984-10-02|Moldable fibrous mat and product molded therefrom
    US9637920B2|2017-05-02|Carpet waste composite
    CN103154098B|2015-11-25|From the matrix material of at least one composition in waste and vulcanized rubber and tire cord
    KR20010023601A|2001-03-26|Poly-coated paper composites
    WO2009042872A1|2009-04-02|Pallet with lead board
    JP2005307402A|2005-11-04|Plastic fiber formed product, method for producing the same and apparatus for producing plastic fiber sheet
    CN1857884A|2006-11-08|Wood-plastic composite material and production process of composite material plate
    EP3143188A1|2017-03-22|Short fiber nonwoven molded articles
    BE1026532B1|2020-03-12|METHOD FOR MANUFACTURING RECYCLED PLASTIC COMPOSITE MATERIAL
    JP2010280187A|2010-12-16|Manufacturing method for fiber board
    DE4128927A1|1993-03-04|Recycling bonded cellulose materials, esp. car lining parts - by crushing, mixing with binder, placing between layers of nonwoven fibre material, cutting, and hot-press moulding to produce new parts
    BE1026529B1|2020-03-12|METHOD FOR MANUFACTURING A PLASTIC INSULATION MATERIAL
    BE1023371B1|2017-02-22|Method for manufacturing composite material with recycled plastic
    JP2005505445A|2005-02-24|Fiber mat, molded piece produced from fiber mat and method for producing the same
    WO2001032405A1|2001-05-10|Fibre reinforced thermoplastic composite
    Rohit et al.2017|Tensile and impact behaviour of thermoplastic BOPP/milk pouches blends reinforced with sisal fibers
    Shanks2017|Recycled synthetic polymer fibers in composites
    US20210388182A1|2021-12-16|Material Created from Polymer and Other Mass which is Entirey, Partially or Substantially Composed of Reclaimed Mixed Material
    CN107438509A|2017-12-05|The load carriers made of salvage material and recyclable material
    Aishwariya2018|Up eye ling textile wastes into apparels and review on other sustainable solutions.
    CN105710994A|2016-06-29|Reusing method of waste plastics
    EP3426833B1|2020-03-18|Method and machinery for producing a composite textile material
    US20210078264A1|2021-03-18|Composite Materials and Related Methods for Manufacturing Composite Materials
    Mohammad et al.2019|The effect of different types of filler on the mechanical and physical properties of wood plastic composite from eucalyptus spp
    同族专利:
    公开号 | 公开日
    BE1025062A1|2018-10-11|
    EP3385055A1|2018-10-10|
    EP3606724A1|2020-02-12|
    WO2018185085A1|2018-10-11|
    CN110573319A|2019-12-13|
    US20210107249A1|2021-04-15|
    JP2020512947A|2020-04-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2021016835A1|2019-07-30|2021-02-04|华峰华锦集团有限公司|Environmentally-friendly cloth prepared from recycled garbage bags, and preparation method therefor and application thereof|DE4128927C2|1991-08-30|1996-07-25|Lignotock Gmbh|Recycling of molded parts made of binder-containing cellulose or lignocellulose materials|
    US5298319A|1992-03-13|1994-03-29|Phillips Petroleum Company|Moldable automotive trunk liner|
    PL2502788T3|2011-03-23|2014-08-29|Autoneum Man Ag|Production process for a moulded multilayer lining|
    US9546439B2|2014-05-15|2017-01-17|Zephyros, Inc.|Process of making short fiber nonwoven molded articles|
    FI20145775A|2014-09-05|2016-03-06|Upm Kymmene Corp|composite Material|
    KR101817550B1|2015-05-22|2018-02-21|싱코티엔시|Headlining reinforce automobile parts with jute fiber and manufacturing metho|BE1026532B1|2018-08-13|2020-03-12|Dierickx Visschers Nv|METHOD FOR MANUFACTURING RECYCLED PLASTIC COMPOSITE MATERIAL|
    EP3838535A1|2019-12-20|2021-06-23|Fundación Cidetec|Process for the production of feather-based thermoplastic materials|
    法律状态:
    2018-12-05| FG| Patent granted|Effective date: 20181015 |
    2019-11-25| PD| Change of ownership|Owner name: DIERICKX VISSCHERS NV; BE Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CESSION; FORMER OWNER NAME: ECO-OH| INNOVATION NV Effective date: 20191004 |
    优先权:
    申请号 | 申请日 | 专利标题
    EP17164582.3|2017-04-03|
    EP17164582.3A|EP3385055A1|2017-04-03|2017-04-03|Method for manufacturing recycled plastic composite|
    [返回顶部]