• 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:
    A method for manufacturing a non-woven recycled thermoplastic composite material is set forth with reference to an illustrative embodiment of the present invention. The method involves the collection of lightweight thermoplastic materials. The method further comprises the formation of a thermoplastic base mass by mixing the light thermoplastic flakes. The method also involves mixing the thermoplastic base stock with a core of unraveled natural fibers into a mixture of both. The mixture is then converted into a web-like structure using an air flow process. The web-like structure is heated to obtain a non-woven thermoplastic composite material of a desired thickness.
    公开号:BE1023371B1
    申请号:E2016/0116
    申请日:2016-06-30
    公开日:2017-02-22
    发明作者:Koen Verhaert；Rudy Galle
    申请人:ECO-OH! bvba；
    IPC主号:
    专利说明:

    METHOD OF MANUFACTURING COMPOSITE MATERIAL WITH
    RECYCLED PLASTIC
    FIELD OF THE INVENTION This invention relates generally to methods for manufacturing a plastic composite material. More specifically, this invention relates to methods for manufacturing a plastic composite material using non-woven recycled thermoplastic material.
    Background of the Invention Plastic has become the most widespread material in the entire industry, with which many diverse products are made, both for domestic use and for commercial applications. That is why the production of plastic has increased considerably over the years, which has also increased the problem of solid waste. Due to their properties, plastics are particularly problematic because they are not easily broken down.
    In order to reduce the costs of extracting raw materials, to reduce the wastage of natural resources for the production of disposable products and to minimize any possible negative effects on the environment, there has been a continuous effort to develop methods for the recycling of used thermoplastic materials that would otherwise end up in an incinerator or in a landfill.
    In one such application of recycled thermoplastic materials, a number of plates / panels of thermoplastic composite material were developed. Such thermoplastic composite materials, which are usually produced by non-woven methods, contain fiber materials that are recycled
    THE thermoplastic materials are. These thermoplastic composite materials have a number of advantages. For example, they can be molded and formed into a number of structural and non-structural usable products, such as parking signs, billboards, car body panels and many others.
    However, the use of recycled materials for the manufacture of non-woven thermoplastic composite materials also has specific drawbacks. For example, recycling of various light thermoplastic products, such as disposable gloves, aprons, air filters, protective covers, plastic covers, polyethylene, etc. is generally not recommended, as they often result in products with physical properties that are generally less acceptable than those of products of strong thermoplastic materials. That is why these types of products remain “waste” and are still being taken to landfills and incinerators, with all the harmful consequences for the environment.
    With a few recent processes, an attempt was made to remedy this shortcoming of light thermoplastic materials by a method in which light plastic materials such as bags, foils, cloths or the like of polypropylene (PP) or polyethylene terephthalate (PET) are first washed in a centrifuge process and subsequently melted and processed into a coarse granulate. Although this process is usually efficient to provide the end products with the desired properties, the formation of the granulate requires different melting processes, which inevitably increases the cost of the process and thus of the recycled end product.
    Therefore, there is a need for a time-saving and cost-effective method for the production of non-woven thermoplastic composite materials made from recycled materials and having properties that are at least comparable to products made from new raw materials.
    Summary of the Invention [008] This invention was made to find a solution to the above problems and brings a method for producing non-woven plastic composite materials with recycled thermoplastic materials. The method involves the collection of light thermoplastic flakes with a predetermined size. The method further comprises the preparation of a thermoplastic base mass by mixing the thermoplastic flakes of generally light thermoplastic materials. The method also includes blending the thermoplastic base mass with a core of unraveled natural fibers into a mixture of both. The mixture is then converted into a web-shaped structure by means of an air-flow process, after which the web-shaped structure is heated until a non-woven plastic composite material of the desired thickness is formed.
    In general, the size of the thermoplastic flakes varies between 3 mm and 15 mm.
    Possibly, the method also includes the formation of a large number of non-woven recycled plastic composite materials, which are fixed over each other to form a multi-layered non-woven recycled plastic composite material.
    It is also possible for a large number of non-woven plastic composite materials to be attached to each other by processes such as, but not limited to, thermal pressing, vacuum forming, gluing, welding and the like.
    Possibly, the light thermoplastic material also includes light thermoplastic materials (typically of a low specific weight) such as plastic film, plastic bags, plastic gloves, films and the like.
    Possibly, the natural fiber may be a raw natural fiber such as, but not limited to, jute, hemp, coconut, flax, sisal or the like.
    Optionally, the method comprises spreading heavy thermoplastic material flakes (usually with a higher specific gravity) over the web of non-woven recycled plastics, prior to the heating phase.
    The heavy thermoplastic materials may be materials such as, but not limited to, ABS, PVC, polystyrene, nylon, PA or the like.
    Further optionally, the method comprises treating the non-woven plastic composite material with a finishing material such as, but not limited to, an antimicrobial layer, wax, paint, varnish, or the like.
    Possibly, the thermoforming process may be a process such as, but not limited to, thermal bonding, steam heating, microwave heating, heat pressing, injection molding, vacuum forming or the like.
    In another aspect of this invention, a non-woven plastic composite material is disclosed. The plastic composite material is formed with light thermoplastics woven with natural fibers. The plastic composite material comprises thermoplastics in a range of 50 to 90, or preferably 70 to 90% by weight. The plastic composite material further comprises natural fibers in a range of 10 to 50, or preferably 10 to 30% by weight. The plastic composite material has a high mechanical strength and can be used for applications where plastic is required with properties such as high heat resistance, high impact resistance, load resistance or the like.
    In yet another aspect of this invention, a multi-layered non-woven plastic composite material is disclosed, which is formed with recycled plastic and natural fibers.
    The details of one or more embodiments are explained in the accompanying drawings and the description below. Other aspects, features and advantages of the subject disclosed here become apparent from the description, the drawings, and the claims.
    BRIEF DESCRIPTION OF DRAWINGS Other aspects, features and advantages of the invention become apparent from the following description when read with reference to the accompanying drawings. In the drawings, reference numerals indicate the corresponding parts in the various representations: FIG. 1 is a schematic view of a non-woven plastic composite material, in accordance with an embodiment of the present invention; FIG. 2 is a schematic view of a multilayer non-woven plastic composite material, in accordance with an illustrative embodiment of the present invention; FIG. 3 is a schematic view of a multilayer non-woven plastic composite material, in accordance with another illustrative embodiment of the present invention; and FIG. 4 is a diagram illustrating a method for manufacturing a non-woven recycled plastic composite material, in accordance with a preferred embodiment of the present invention;
    DL
    FIG. 5 is a diagram illustrating a method for obtaining light thermoplastic flakes from a collection of plastic materials to be recycled, according to an embodiment of the present invention;
    Detailed Description of the Preferred Embodiments Reference is now made in detail to the preferred embodiment of this invention, examples of which are illustrated in the accompanying drawings. As required, a schematic, exemplary embodiment of this application is shown here; it should be understood, however, that the embodiment shown is only an example for this explanation and can be implemented in various and / or alternative forms. Specific structural and functional details shown herein should not be construed as limiting, but only as a basis for the claims and as a representative basis for teaching an expert to apply this explanation in virtually any applicable detailed structure.
    Aspects, advantages, and / or other features of the exemplary embodiment of the explanation will become apparent upon reading the following detailed description in which various non-limiting embodiments of the invention are explained. In the description of the embodiments as an example, specific terminology is used for clarity. However, the embodiments are not intended to be limited to this specific terminology. It should be understood that each specific part includes all technical equivalents, which work in a similar way to achieve a similar goal.
    In the following detailed description, numerous specific details are set forth for a proper understanding of the invention. For those of ordinary skill in the art, it should be clear that the invention can be used without these specific details. In other cases, known methods, procedures and / df 'components were not described in detail so as not to overshadow the invention.
    In this application, a method is explained for forming a non-woven plastic composite material from recycled thermoplastic materials using a simple, cost-effective method. The method uses light plastic materials such as, but not limited to, plastic film, foils, plastic bags, etc. to form a plastic composite material with suitable mechanical properties, high heat resistance, high impact resistance, load resistance and very good dimensional stability. The manufactured non-woven plastic composite material is useful for forming a variety of panels such as fence signs, billboards, plastic traffic signs and the like. It is to be understood that, although the current disclosure only concerns light recycled thermoplastic materials such as films, bags, plastic films, etc., this method can generally be used for all types of thermoplastic materials. It is also noted that in this specification and the attached claims, the singular forms "a", "the" and "it" also include the plural unless the context clearly dictates otherwise. The term "a thermoplastic material" means a single thermoplastic material or a combination of different types of plastic materials.
    Referring to the drawings in more detail, Figs. 1 a plastic panel 100 made from a non-woven thermoplastic composite material 110 in accordance with one aspect of the present invention. The non-woven thermoplastic composite material 110 is made at least in part from used, recyclable thermoplastic material 120. The thermoplastic material 120 generally consists of one or more light thermoplastic flakes 122 with a size between 3 mm and 15 mm. In certain embodiments, the thermoplastic material 120 may further consist of thermoplastic flakes 124 made of higher specific gravity thermoplastics. The thermoplastic composite material 110 also contains a core of natural fibers 130, generally interwoven (not shown) and connected to the thermoplastic material 120 within a three-dimensional web structure (not shown).
    In an embodiment of the present invention, as illustrated in Figs. 2, the thermoplastic panel 100 can be made of a multilayer thermoplastic composite material 120. The multilayer composite material 120 consists of a first layer of thermoplastic composite material 120a attached and / or adhered to an adjacent second layer of thermoplastic composite material 120b. In some examples, the layers 120a, 120b can be of the same thickness. In certain other embodiments, the layers 120a, 120b can have a different thickness. In certain examples, the first layer 120a and the second layer 120b are both formed with the same thermoplastic materials in the same composition. In some other examples, the first layer 120a and the second layer 120b may be formed with thermoplastic material of a different type, whereby each layer has different properties. By using alternating layers of different materials, the multilayer composite material 120 can exhibit the desired properties, such as high chemical, thermal and mechanical resistance, high strength and the like. Although in Fig. 2, if two layers 120a and 120b of thermoplastic composite material are shown, it is to be understood that the multilayer composite materials 120 may contain additional layers, as shown in Figs. 3. In one of these embodiments, the multilayer composite material 120 may consist of many layers of the same thermoplastic composite material, interspersed with layers of a different thermoplastic composite material. In certain embodiments, the layers 120a, 120b of the multilayer composite material 120 can adhere strongly to each other with little or no separation between the adjacent layers. In certain other embodiments, the layers 120a, 120b of the multilayer composite material do not adhere to each other and are only associated with various techniques known to the art.
    The multiple layers of the multilayer composite material 120 can be joined in any desired direction and any desired order. Furthermore, the layers 120a, 120b can be joined at an angle to each other, which can further increase the strength of the multilayer composite materials.
    The thermoplastic composite material 110 may further comprise one or more layers of finishing material 140 (as shown in Fig. 3) applied to an upper and / or lower surface of one or more separate layers of the thermoplastic composite material 110. In one embodiment of this invention, the finishing material comprises one or more antimicrobial layers of material such as antibacterial agents, antifungal agents and the like. In another embodiment, the finishing material may consist of washing solutions, paint or the like.
    The "thermoplastic material" suitable for use in this invention usually consists of different types of light plastic components from the recycled objects such as flexible films and / or plates, commercial labels and / or bags and / or boxes and / or other packaging, preferably for use in the food and / or agricultural industry, preferably made from at least one of the materials PE, PET, PVC, PP, PS, which none of them can normally be reused and which are usually sent to a landfill or incinerator are brought for reasons of cost, melting / binding or contamination.
    Some other non-exhaustive examples of suitable "thermoplastic material" are products from the following series of resins: ABS, acrylic, high density polyethylene (HDPE), low density polyethylene (LDPE), polyethylene terephthalate (PET), polyvinyl chloride (PVC or V), polypropylene (PP) and polystyrene (PS). The most commonly available recycled plastics today are products made from PET and HDPE and include plastic bottles, boxes and packaging, plastic blocks, etc., all of which are characterized by one of the generally accepted symbols for recycling, such as: "High density white plastic" means boxes and packages made of white or transparent plastics, such as white detergent bottles, wiper fluid reservoirs, etc.
    Other examples of thermoplastic material are the commercial plastic labels that are applied to packages, boxes, cans, food bottles, etc .; transparent, semi-transparent and opaque bags with fresh and / or longer-lasting foods; bags for agricultural products such as fertilizers, compost, seeds, etc .; transparent, semi-transparent and opaque waterproof tarpaulins; bags for waste, food, products and goods, etc .; thermoplastic packaging of packaging for one or more products etc. and / or any possible combination thereof.
    The core of natural fibers 130 for use in the manufacture of the non-woven plastic composite material 110 is usually a base mass of unraveled fibers from the processing of intertwined natural raw fibers using commonly available tools such as, for example, open or tear-off machines for bast fibers or the like.
    The term "natural fibers" as used herein refers to any uninterrupted fiber wire derived from natural, renewable resources such as plants or animals. The words "fiber" and "fibers" are used interchangeably. Natural fibers include, but not only, 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, soybean fibers, vine fibers and banana fibers; fruit fibers such as coconut fibers; stem fibers such as straw from grain, rice, barley, bamboo, grass and tree wood; animal hair fibers such as sheep wool, goat hair (cashmere, mohair), alpaca wool, horsehair; silk fibers; bird fibers such as feathers. The natural fibers used in this invention should preferably have at least moderate firmness and rigidity and good toughness. Fibers with larger diameters are also preferable because they are stiffer. Furthermore, the length of the natural fibers 130 can vary from about 50 mm to 400 mm, preferably from about 150 mm to about 350 mm.
    In a preferred embodiment of this invention, natural fibers 130 comprise raw natural fibers such as jute, hemp, coconut, flax, sisal, etc. In a more preferred embodiment of this invention, jute fibers are used as natural fibers 130. The jute fibers have properties such as low density, limited abrasive properties, high firmness and therefore good dimensional stability.
    In certain embodiments of this invention, the natural fibers can also be blended with synthetic thermoplastic fibers, such as polypropylene ("PP"), polyethylene ("PE"), polylactic acid ("PLA") or a mixture thereof. Such a blend of natural fibers and thermoplastic synthetic fibers can further improve the rigidity and hardness of the thermoplastic composite material 120.
    FIG. 4 with reference to the Fig. 1 to 3 is a flow chart illustrating a method 400 for manufacturing the thermoplastic composite material 110. As shown in Figs. 4, method 100 consists of a number of steps, but the order of the method steps that are further explained is only an example for a proper understanding of the invention by those skilled in the art. The method 400 begins at step 402 and continues to step 404, where a collection of low-weight light thermoplastic flakes is obtained and blended into a basic thermoplastic mass in step 406. In general, the collection of light thermoplastic flakes may in a ready-to-use configuration are obtained from different sources (for example external sellers) who offer the recycled thermoplastic flakes. However, in certain embodiments of this invention, the set of thermoplastic flakes is obtained from a set of thermoplastic material to be recycled by a method 500 as indicated in Figs. 5. The method 500 starts at 502 and continues to 504, where a collection of thermoplastic material is obtained. The collection of thermoplastic material usually comprises low specific weight thermoplastic material mixed with high specific weight thermoplastic material. At step 506, the obtained thermoplastic material collection is sorted according to various factors such as material type, material color, and the like, and then milled into thermoplastic flakes, preferably 3 mm to 15 mm in size, in step 508. In step 510, the thermoplastic flakes are with a higher specific gravity then separated from the thermoplastic flakes with a lower specific gravity; preferably by centrifugation or by separation in water, so that the light thermoplastic flakes with a density lower than water are separated from the flakes with a density greater than water.
    Returning to method 400, in step 408, a core of unraveled natural fibers is supplied, which is mixed with the thermoplastic base mass. In general, the core of the unraveled natural fibers consists of raw fibers of already known materials, with a length of usually 50 mm to 400 mm, preferably between approximately 150 mm and approximately 350 mm. In an embodiment of this invention, the ratio by weight of the natural fibers and the thermoplastic flakes is 50:50. In another embodiment, this ratio is 30:70. In yet another embodiment, the ratio by weight of the natural fibers and the thermoplastic flakes is 20:80. And in yet another embodiment of this invention, the ratio by weight of the natural fibers and the thermoplastic flakes is 10:90. The method is then continued in step 410, where the blend of the thermoplastic base mass and the core of natural fibers undergoes a weaving process, preferably in an air flow process to form a homogeneously blended web structure, or any other process involving a blend of thermoplastic flakes and natural fibers can be formed by exposing the materials to one or more air streams. The airflow process can for example be carried out with a Rando machine or Laroche machine, or any other machine, as is already known in the art. Alternatively, the weaving process can be performed by any known method, such as carding or the like.
    Once the web structure of the homogeneous mixture is formed, the method is continued in an optional step 412, where the higher specific gravity thermoplastic flakes filtered out in step 404 are uniformly spread on the web structure of the homogeneous mixture and then proceed to step 414. Alternatively, method 400 goes directly from step 410 to step 414, where the web structure of the homogeneous mixture is stabilized by heating with known processes, such as the thermoforming process. The thermoforming process used is preferably thermal bonding, wherein the web structure obtained in the previous step is heated by sending it through heated calender rolls. Alternatively, the web structure can be stabilized with other heating processes, with the temperature within the web structure being raised sufficiently to connect the thermoplastic materials with each other and with the natural fibers. Such processes include, but are not limited to, heat pressing, vacuum forming, steam heating, microwave heating and the like, which are already known in the art. The stabilized web structure can then be converted into a thermoplastic composite material 120 with the desired thickness.
    The method 400 further comprises an optional step 416, wherein two or more thermoplastic composite materials are produced as in steps 402 to 414. Thereafter, the two or more thermoplastic composite materials are joined together in a layered structure to form a multi-layer thermoplastic composite material such as already explained with reference to the Fig. 2 and 3. The layered structure can be carried out by any of the well-known techniques, such as, but not limited to, presses, vacuum forming, gluing, welding and the like. Furthermore, each layer of the multilayer thermoplastic composite material can be formed with the same or different thermoplastic materials, depending on the desired application and properties of the thermoplastic composite material to be produced.
    In certain embodiments of this invention, the method 400 also includes an optional step for treating one or more surfaces of the thermoplastic composite material 110 with a finishing material 140 (depicted in Fig. 3) and / or post-treatments to determine the composite material properties. to provide. For example, one or more surfaces of the thermoplastic composite material 110 can be treated with an antimicrobial, antifungal, or the like. Alternatively and / or additionally, the thermoplastic composite material can be treated with finishing materials such as wax, paint or the like.
    INDUSTRIAL APPLICABILITY
    This explanation relates to non-woven thermoplastic composite material 110 for the production of plates, mats or plates from generally light recycled plastic materials and can be used for various purposes such as traffic management products such as billboards, parking signs, other structural components made are of thermoplastic materials and have desirable properties such as shock resistance, swelling, heat resistance, heat resistance, dimensional stability, abrasion resistance, etc., which are at least comparable to the properties of conventional plastic plates, mats or plates.
    The thermoplastic composite material 110 may contain about 10% to 50% by weight, or 10% to about 30%, and preferably about 20%, reinforcing natural fibers with an average length between about 50 mm and about 400 mm, and at preferably between about 150 mm and about 350 mm. The thermoplastic composite material generally contains about 50% to 90% by weight, or 70% to about 90% and preferably about 80% flakes of thermoplastic materials, with an average size between about 3 mm and about 15 mm, with the weight percentages be based on the total weight of the thermoplastic composite material 110.
    This explanation further provides a method, generally referred to with the number 400, for the manufacture of non-woven thermoplastic composite material by recycling light thermoplastic materials. The method is generally a simple, cost-effective, time-saving method for forming a high-quality thermoplastic composite material, generally using unused light plastic waste such as plastic wrap, plastic bags, gloves or the like and / or combinations thereof. Traditionally, the use of such light plastic materials required an additional step in which granules or pellets were melted and formed to make them suitable for the manufacture of thermoplastic composite materials. However, by applying the method 400 in accordance with this invention, the recycling process can be considerably and substantially shortened.
    Referring to Figs. 4 and fig. 5, the methodology is illustrated with a preferred embodiment of the claimed subject. Although the methodology, to keep the explanation simple, is depicted and described as a series of actions, one must understand and realize that the claimed subject is not limited to a series of consecutive actions, since certain actions can be performed in a different order and / or or simultaneously with actions other than the actions shown and described herein. For example, those skilled in the art will understand and realize that a methodology may alternatively be represented as a series of interconnected states or events, such as in a status diagram. Moreover, it is possible that not all illustrated actions are necessary to apply a methodology in accordance with the claimed subject.
    In the specifications of this explanation, the term "include" means inclusive, but not necessarily excluding other elements or steps. In other words, the term "include" indicates an open list. Also, all references to a direction / location (such as, but not limited to, up, down, in, out, up, down, in, out, right, left, right, left, inside, outside, upper , bottom, over, bottom, vertical, horizontal, clockwise and counterclockwise, axial and / or radial or other and / or similar references to direction / location) used for identification only to to give the reader a better understanding of illustrative embodiments of this disclosure without limiting it, in particular with regard to position, orientation or use, unless specifically stated in the claims. Furthermore, all references to a direction / place are approximate and may not be interpreted as exact, but rather as a description of a general indication of approximate behavior.
    Similarly, references to aggregations (such as, but not limited to, attached, connected, connected, fitted, and the like and their derivations) should be interpreted broadly and could also refer to intermediate components between a connection of segments and the relative movement between segments. As such, references to aggregations do not necessarily imply that two segments are directly and permanently connected.
    In certain cases, components are described with reference to "ends" with a specific property and / or connected to another component. However, those skilled in the art will appreciate that this explanation is not limited to components that immediately terminate at the location where they are connected to other components. Therefore, the term "end" must be interpreted broadly, including adjacent zones, backward, forward, or otherwise at the extreme point of a specific segment, connection, component, component, element, or the like. Also, all numerical terms, such as, but not limited to, "first", "second", "third", "fourth" and all other ranking and / or common numerals, should only be interpreted for identification purposes to better understand the reader. give, in the various embodiments, variations and / or changes to this explanation, without any limitation, in particular regarding the order or preference of each embodiment, variation and / or change with respect to or relative to another embodiment , variation and / or change.
    As will be readily apparent to those skilled in the art, this invention can be easily applied in other specific forms without departing from its essential characteristics. The stated embodiments are therefore to be considered merely as illustrative and not restrictive. The scope of the invention is indicated in the claims and not in the foregoing description, and all changes must therefore be included herein. Numerous variations, changes, additions and improvements DL · possible. More generally, the embodiments in this explanation were described in the context of preferred embodiments. Functions can be separated or combined in procedures in different embodiments of the explanation, or described in different terms. These and other variations, changes, additions and improvements may fall within the scope of the explanation, as determined in the attached claims.
    权利要求:
    Claims (20)
    [1]
    DL CONCLUSIONS
    1. A method for manufacturing non-woven recycled plastic composite material, comprising the following steps: i) Delivery of flakes of light thermoplastic materials to be recycled; ii) Formation of a thermoplastic base mass by mixing the light thermoplastic flakes; iii) Combination of the thermoplastic base mass with a core of unraveled natural fibers into a blend; iv) Forming a web structure with a predetermined thickness from the mixture, by means of an air flow process; and v) Stabilization of the web structure by heating it in a thermoforming process.
    [2]
    The method of claim 1, wherein the light thermoplastic flakes are obtained by a method consisting of the following steps: i) Delivery of one or more thermoplastic materials to be recycled; ii) Grinding the thermoplastic material into small flakes; iii) Sorting the flakes of thermoplastic material into light thermoplastic materials and heavy thermoplastic materials.
    [3]
    3. The method of claim 1, with the additional steps: i) Formation of a large number of non-woven recycled plastic composite materials; and ii) Combining the many non-woven plastic composite materials into a layered structure to form a multi-layered non-woven recycled plastic composite material. DC
    [4]
    The method of claim 3, wherein the many plastic composite materials can be bonded to a layered structure using a particular process such as, but not limited to, pressing, vacuum forming, gluing or welding.
    [5]
    5. A method of claims 1 and 2, possibly extended with the step of spreading heavy thermoplastic flakes over the web structure of non-woven recycled plastic.
    [6]
    The method of claim 5, wherein the step of spreading thermoplastic flakes is performed before the step of heating by thermoforming.
    [7]
    7. The method of claim 1, extended with the step of treating the non-woven plastic composite material with a finishing material.
    [8]
    The method of claim 7, wherein the finish also includes applying an antimicrobial layer, wax, paint, or the like.
    [9]
    9. The method of claim 1 or 2, wherein the thermoplastic material is individually selected from the group of resins such as, but not limited to, ABS, acrylic, high density polyethylene (HDPE), low density polyethylene (LDPE), polyethylene terephthalate (PET), polyvinyl chloride (PVC) or V), polypropylene (PP) and polystyrene, (PS), plastic bottles, boxes and packaging, plastic blocks, plastic bags, plastic film, films and / or a combination thereof.
    [10]
    A method of claim 1 or 2, wherein the light thermoplastic materials comprise one or more materials from the group of plastic film, plastic bags, low-density polyethylene (LDPE), plastic packaging material and the like and / or combinations thereof. THE
    [11]
    The method of claim 1 or 2, wherein the heavy thermoplastic material comprises one or more materials from the group of ABS, PVC, polystyrene, nylon, PA and the like and / or combinations thereof.
    [12]
    The method of claim 1, wherein the natural fibers are individually selected from one or more 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, soybean fibers, vine fibers and banana fibers; fruit fibers such as coconut fibers; stem fibers such as straw from grain, rice, barley, bamboo, grass and tree wood; animal hair fibers such as sheep wool, goat hair, alpaca wool, horsehair; silk fibers; bird fibers such as feathers.
    [13]
    The method of claim 1, wherein the heating process consists of one of the following processes: steam heating, heating by steam injection, microwave heating, vacuum heating and the like.
    [14]
    The method of claim 1, wherein the size of the flakes is between 3 mm and 15 mm.
    [15]
    The method of claim 1, wherein the core of natural fibers and the thermoplastic base mass are mixed in a ratio of less than 50:50 by weight, and preferably in a ratio of 20:80 in weight.
    [16]
    The method of claim 1, wherein the length of the natural fibers varies between 50 mm and about 400 mm, and preferably between 100 mm and 300 mm.
    [17]
    17. A non-woven recycled plastic composite material made by a method of any of the preceding claims.
    [18]
    The non-woven plastic composite material of claim 17, wherein the non-woven composite material contains by weight between about 10% to 50%, or about 10% to about 30%, and preferably about 20% unraveled natural fibers.
    [19]
    The non-woven plastic composite material of claim 17, wherein the non-woven composite material contains by weight between about 50% to 90%, about 70% to about 90%, and preferably about 80% thermoplastic flakes.
    [20]
    The non-woven plastic composite material of claim 17, wherein the plastic composite material comprises a finishing layer of material such as, but not limited to, wax, paint, coatings or the like.
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    同族专利:
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    EP3028846A1|2014-12-03|2016-06-08|Galle, Rudy|A composite board made from recycled and recyclable materials|CN111685414A|2020-05-25|2020-09-22|华南理工大学|Environment-friendly mask and recycling method thereof|
    法律状态:
    2021-04-19| MM| Lapsed because of non-payment of the annual fee|Effective date: 20200630 |
    优先权:
    申请号 | 申请日 | 专利标题
    EP16175317.3A|EP3260587A1|2016-06-20|2016-06-20|Method for manufacturing recycled plastic composite|
    EP16175317.3|2016-06-20|
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