Waste fiber composition, preparation method, and molded product and use thereof

Abstract

A waste fiber composition, a preparation method, and a molded product and a use thereof. Based on a total weight of 100 wt%, the waste fiber composition comprises 95 wt% or more but less than 100 wt% of a fiber body and the remaining weight percentage of the waste fiber composition of a binder. The fiber body is taken from residual or recycled fiber-containing waste, the waste is formed into a fluffy batting shape by means of a grinding procedure, and the size of the fiber body is 0.1 mm-50 mm; the binder is an acrylic copolymer; and the waste fiber composition is supplied to an extruder, and is heated, melted, mixed, and extruded to obtain a strip-shaped, sheet-shaped, or plate-shaped molded product.

Description

Waste fiber composition, preparation method, molded product and application thereof TECHNICAL FIELD

[0001] The present invention relates to a waste fiber composition, a preparation method, a molded product and an application thereof, and belongs to the technical field of waste fiber recycling. BACKGROUND

[0002] In some products using fibrous materials (such as non-woven fabric), such as sanitary products (diapers), sanitary cotton, bags, filters, clothing, building materials, etc., the leftover materials during the manufacturing process, or after use or damage, are directly discarded, causing resource waste and not meeting the green economy policy. Therefore, how to recycle and reuse the leftover materials or discarded products with fibrous materials is a problem that needs to be solved by relevant industries.

[0003] The present invention is developed to recycle and reuse the waste and make environmentally friendly products to reduce environmental burden.

[0004] SUMMARY

[0005] One object of the present invention is to provide a waste fiber composition, which is obtained from leftover materials (such as leftover materials, leftover materials) or waste recycling materials with fibrous components.

[0006] Another object of the present invention is to provide a preparation method of a waste fiber composition, which grinds the obtained waste with fibrous components, and then adds a binder in a certain proportion and stirs uniformly.

[0007] A third object of the present invention is to provide a molded product made of the above waste fiber composition by extruding through an extruder.

[0008] A fourth object of the present invention is to provide an application of the extruded molded product, which is used to replace part of metal or plastic products.

[0009] The above objects are achieved by the following technology:

[0010] A waste fiber composition, which comprises 95wt% or more (including) but less than 100wt% (not including) of a fiber body and the remaining weight percentage of a binder, based on 100wt% of the total weight; wherein the fiber body is obtained from leftover or recycled waste with fibers, which is ground into a fluffy cotton-like shape through a grinding process, and the size of the fiber body is between 0.1mm and 50mm; and the binder is an acrylic copolymer.

[0011] The fiber body is one or more than two combinations of nylon, non-woven fabric, cotton, acrylic, polypropylene, polyethylene, polyethylene terephthalate.

[0012] A method for preparing a waste fiber composition, comprising: first crushing a waste material taken from remaining or recycled waste material containing fibers to form a fiber body in a fluffy cotton-like shape and having a size of 0.1 mm to 50 mm, and then mixing a binder accounting for more than or equal to 95 wt% but less than 100 wt% of the fiber body and the remaining weight percentage of the waste fiber composition, the binder being an acrylic copolymer, based on 100 wt% of the total weight of the waste fiber composition.

[0013] The fiber body is one or more than two combinations of nylon, non-woven fabric, cotton, acrylic, polypropylene, polyethylene, polyethylene terephthalate.

[0014] A molded product of a waste fiber composition is obtained by supplying the waste fiber composition described above to an extruder and heating, melting, kneading and extruding the waste fiber composition to obtain a strip-shaped, sheet-shaped or plate-shaped molded product.

[0015] The heating temperature of the extruder is 90-180°C.

[0016] An application of a molded product of a waste fiber composition, wherein the molded product in a strip shape described above is granulated as a plastic master batch.

[0017] An application of a molded product of a waste fiber composition, wherein the molded product in a sheet shape or a plate shape described above is subjected to secondary press processing to form one of a frame, a net, a shell or a surface of a laminate.

[0018] Advantages of the present application are:

[0019] 1. The fiber body of the present application is taken from remaining waste material or discarded waste material, which can solve the problem of recycling and processing of remaining waste material and discarded waste material, and is beneficial to resource recycling.

[0020] 2. The fiber body of the present application can make the molded product in a hard state or a flexible and bendable state by the addition of the proportion between the fiber body and the binder, thereby replacing part of metal or plastic products. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a molding flowchart of the molded product of the present application;

[0022] Fig. 2 is a schematic view of the application of the molded product of the present application to a table surface;

[0023] Fig. 3 is a schematic view of the application of the molded product of the present application to a spliced floor mat surface.

[0024] Main reference numeral explanation:

[0025] A: table board

[0026] B: floor mat

[0027] 1: shaped product DETAILED DESCRIPTION

[0028] In order to have a more complete and clear disclosure of the technical content applied in the present invention, the invention purpose and the achieved effects, the following detailed description is made, and the disclosed drawings are referred to:

[0029] According to the composition of the present invention, it comprises fiber body and adhesive; wherein the waste fiber composition comprises more than 95wt% (inclusive) but less than 100wt% (exclusive) of fiber body, and the remaining weight percentage of adhesive in the waste fiber composition, based on the total weight of 100wt%; wherein the adhesive is acrylic copolymer.

[0030] The different mixing ratio of fiber body and adhesive in the composition will result in different toughness and rigidity of the shaped product shaped by the composition. That is, different application products can be achieved by adjusting the mixing ratio of fiber body and adhesive in the composition. For example, for making shell, frame or rod, etc., the rigidity needs to be increased, so the proportion of fiber body is adjusted to be higher; for making the surface of the article (table surface, floor mat surface) or plate, etc., the toughness and rigidity need to be both possessed, so the proportion of fiber body is adjusted to be lower; for making filter screen support rack, etc., the toughness needs to be increased, so the proportion of fiber body is adjusted to be lower. That is, when the shaped product is applied to the product with high rigidity, the weight percentage of fiber body is closer to 100wt%, and when the shaped product is applied to the product with high toughness, the weight percentage of fiber body is closer to 95wt%.

[0031] In a preferred embodiment, wherein the fiber body is taken from the remaining or recycled waste material with fiber, which is crushed into fluffy cotton-like shape by crushing process, and the size of the fiber body is between 0.1mm and 50mm.

[0032] In a preferred embodiment, wherein the fiber body is one or more than two combinations of nylon (PA), non-woven fabric, cotton, acrylic, polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PVC).

[0033] The molding product of the present application is obtained by feeding the waste fiber composition as described above into an extruder and heating, melting, mixing and extruding. Specifically (see Fig. 1), the recycled waste material with fibers is first crushed to form fluffy cotton-like waste material, then fibers with a size of 0.1-50 mm are selected and mixed with a binder to form a waste fiber composition in the form of a glue solution, wherein the waste fiber composition contains more than 95 wt% (including) but less than 100 wt% (not including) fibers, and the remaining weight percentage of the waste fiber composition is a binder; the waste fiber composition is then fed into an extruder, heated, melted and mixed in the extruder, and then extruded into the molding product; the molding product can be in the form of a strip, a sheet or a plate, depending on the extrusion die of the extruder; the heating temperature is 90-180°C. Before the waste fiber composition is fed into the extruder, the uniformly mixed waste fiber composition can be further extruded to remove excess binder by an extruder.

[0034] When the molding product of the present application is in the form of a strip, the strip-shaped molding product can be granulated as a plastic master batch. When the molding product of the present application is in the form of a sheet or a plate, the sheet- or plate-shaped molding product can be further processed by secondary stamping to form a frame, a net, a shell, a surface of a laminate, a board, a building material, a floor material, a wall material, a ceiling material, a floor mat, a veneer, a table board, a door and window frame, a filter support net, a housing of a vehicle or an electrical device. As shown in Fig. 2, the molding product 1 of the present application is applied to the surface of a table board A by secondary stamping, and as shown in Fig. 3, the molding product 1 of the present application is applied to the surface of a spliced floor mat B by secondary stamping.

[0035] To increase the value of the product, the waste fiber composition of the present application further comprises a color powder, i.e. an appropriate amount of color powder is added during the mixing and stirring process of the crushed fibers and the binder, so that the molding product formed by the waste fiber composition exhibits different colors depending on the color of the added color powder; or the surface of the molding product is sprayed with a baking paint; or the molding product is immersed in a baking paint to form at least one colored layer on the surface of the molding product.

[0036] The above examples are only part of the embodiments of the present application and are not intended to limit the present application. According to the spirit and characteristics of the present application, slight changes and modifications should also be included within the scope of the present patent.

Claims

1. A waste fiber composition comprising 95 wt% or more but less than 100 wt% of fiber bodies, and the remaining weight percentage of binder, based on 100 wt% total weight; wherein, The fiber body is obtained from waste material containing fibers, which is crushed to form a fluffy cotton-like material having a size of 0.1-50 mm, and the binder is an acrylic copolymer.

2. The waste fiber composition of claim 1, wherein, The fiber body is one or more of nylon, non-woven fabric, cotton, acrylic, polypropylene, polyethylene, and polyethylene terephthalate.

3. A method for preparing a waste fiber composition, comprising: crushing waste material containing fibers to form a fluffy cotton-like material having a size of 0.1-50 mm, and mixing the material with a binder, which is an acrylic copolymer, in an amount of 95 wt% or more but less than 100 wt% based on the total weight of the waste fiber composition.

4. The method of claim 3, wherein the waste fiber composition is prepared by the steps of: The fiber body is one or more of nylon, non-woven fabric, cotton, acrylic, polypropylene, polyethylene, and polyethylene terephthalate.

5. A molded product of a waste fiber composition, which is obtained by supplying the waste fiber composition of any one of claims 1-2 to an extruder and heating, melting, kneading, and extruding the same to obtain a strip-like, sheet-like, or plate-like molded product.

6. The shaped article of scrap fiber composition of claim 5, wherein, The heating temperature of the extruder is 90-180°C.

7. Use of a shaped article of a waste fiber composition, wherein, The strip-like molded product according to claim 5 or 6 is granulated as a plastic master batch.

8. Use of a shaped article of a waste fiber composition, wherein, The sheet-like or plate-like molded product according to claim 5 or 6 is subjected to secondary press processing to form one of a frame, a net, a case, and a surface of a laminate.

Images