CN-121989386-A - Recovery granulation method of composite fiber cloth

CN121989386ACN 121989386 ACN121989386 ACN 121989386ACN-121989386-A

Abstract

The recovery granulation method of the composite fiber cloth comprises the following steps of obtaining a plurality of composite fiber cloths, wherein the composite fiber cloths are made of a plurality of composite yarns; the method comprises the steps of crushing a plurality of composite fiber cloth to obtain a plurality of composite fiber crushed aggregates formed by cutting a plurality of composite yarns, putting the plurality of composite fiber crushed aggregates and a plurality of plastic granules into a mixing machine for melt-mixing to form a mixed material, and granulating the mixed material to obtain a plurality of master batches with commercial value, wherein the plurality of master batches can be processed into finished products through a plurality of processing means according to product requirements, and the recovery granulation method of the composite fiber cloth not only reduces pollution in the recovery process, but also can process the plurality of composite fibers into a re-product with commercial value, thereby realizing the purpose of recovery and utilization.

Inventors

ZHANG GUOJUN
Ye Boyu
GUO YANHONG

Assignees

弘裕企业股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241120
Priority Date: 20241101

Claims (8)

1. A recovery granulation method of composite fiber cloth comprises the following steps: step S1, obtaining a plurality of composite fiber cloth, wherein the composite fiber cloth is made of a plurality of composite yarns, each composite yarn comprises a core yarn layer and a coating layer, each core yarn layer is made of a polymer fiber material, each coating layer is coated around the core yarn layer, each coating layer is made of a thermoplastic material, and the melting point of the polymer fiber material is higher than that of the thermoplastic material; s2, placing the composite fiber cloth materials in a cutting machine for crushing to obtain a plurality of composite fiber crushed materials formed by cutting the composite yarns; Step S3, putting the composite fiber crushed aggregates and the plastic granules into a kneader, wherein the temperature of the kneader is set to be higher than the melting point of the coating layers of the composite fiber crushed aggregates and the melting point of the plastic granules and lower than the melting point of the core yarn layers of the composite fiber crushed aggregates, so that the coating layers of the composite fiber crushed aggregates and the plastic granules are thermally fused together and cover the core yarn layers of the composite fiber crushed aggregates to form a mixed material, and And S4, granulating the mixed material to obtain a plurality of master batches.
2. The recovery granulation method of composite fiber cloths according to claim 1, wherein in the step S1, the plurality of composite fiber cloths are derived from waste selvedge, waste cloth and waste yarn generated in the cloth process.
3. The recovery granulation method of a composite fiber cloth according to claim 1, wherein in the step S1, the content of each of the coating layers is 60wt% to 90wt% of the total content of each of the composite yarns, and the content of each of the core yarn layers is 10wt% to 40wt% of the total content of each of the composite yarns.
4. The method for recycling and granulating a composite fiber cloth according to claim 1, wherein in the step S1, the polymer fiber material is one selected from the group consisting of polyamide fiber, aromatic polyamide fiber, ultra-high molecular weight polyethylene and polyester fiber, and the thermoplastic material is one selected from the group consisting of polyvinyl butyral resin, thermoplastic elastomer and polyvinyl chloride.
5. The method for recycling and granulating composite fiber cloth according to claim 1, wherein in the step S2, a discharge hole of the cutter is provided with a filter screen for screening the plurality of cut composite fiber crushed aggregates, and a mesh size of the filter screen is 5 mm-30 mm.
6. The method for recycling and granulating composite fiber cloth according to claim 1, wherein in the step S3, the plurality of composite fiber crushed aggregates are put into the kneader, and then the plurality of plastic granules are put into the kneader to be pressed against the plurality of composite fiber crushed aggregates for uniform mixing, wherein the input weight ratio of the plurality of composite fiber crushed aggregates to the plurality of plastic granules is 1: 9~4:6.
7. The method for recycling and granulating a composite fiber cloth according to claim 1, wherein in the step S3, the plurality of plastic pellets are one selected from the group consisting of low density polyethylene, high density polyethylene and polypropylene, and the temperature of the kneader is 120 ℃ to 150 ℃.
8. The method for recycling and granulating composite fiber cloth according to claim 1, wherein in the step S4, the plurality of master batches comprise a base material and a plurality of plastic fragments, the base material is formed by solidifying the coating layer of the plurality of composite fiber fragments and the plurality of plastic particles in a hot melt state of the mixed material, and the base material is coated around the plurality of plastic fragments, and the plurality of plastic fragments are the core yarn layers of the plurality of composite fiber fragments in the mixed material.

Description

Recovery granulation method of composite fiber cloth Technical Field The invention relates to a cloth recycling technology, in particular to a recycling granulation method of composite fiber cloth. Background Composite fibers are known to be fibers composed of two or more different materials that each have advantages in physical and chemical properties, and by compounding, can be complemented and enhanced in performance, making them widely used in modern industry, providing strength, light weight, durability, and professional performance. In the process of processing the composite fiber, different materials are usually tightly combined together, and the materials are different in physical and chemical characteristics, so that the process of separating the materials becomes very difficult, the threshold of the waste composite fiber cloth in recycling technology is too high, the required equipment cost is not negligible, the economic benefit of recycling the composite fiber cloth is challenged by the factor, even a plurality of operators subject the waste composite fiber cloth to incineration treatment, besides the cost of the incineration treatment is increased, and the incinerated product also causes air pollution to the environment. Therefore, developing an effective composite fiber recovery technology to convert waste materials generated in the production process into recycled products is particularly important, which not only can effectively reduce unrenewable composite fiber waste materials, but also can promote the development of recycling economy, and the composite fiber recovery technology has become the main development focus of various related industries at present. Disclosure of Invention In view of the above, the present invention aims to provide a method for recycling and granulating composite fiber cloth, which can recycle waste composite fiber cloth, promote the reutilization of resources and reduce the pollution caused by recycling waste composite fiber cloth. In order to achieve the above purpose, the recovery granulation method of the composite fiber cloth comprises the following steps of S1, obtaining a plurality of composite fiber cloths, wherein the composite fiber cloths are made of a plurality of composite yarns, each composite yarn comprises a core yarn layer and a coating layer, each core yarn layer is made of a polymer fiber material, each coating layer is coated around the core yarn layer and is made of a thermoplastic material, the melting point of the polymer fiber material is higher than that of the thermoplastic material, S2, placing the composite fiber cloths in a cutting machine to cut into a plurality of composite fiber particles by the composite yarns, S3, placing the composite fiber particles and the plastic particles into a mixing machine to be uniformly mixed, the temperature of the mixing machine is set to be higher than that of the composite fiber particles and that of the plastic particles and lower than that of the core fiber layers, and mixing the composite fiber particles and the plastic particles in the step 4, and carrying out hot granulation on the composite fiber particles to obtain the composite fiber particles. The invention has the effects that the recovery granulation method of the composite fiber cloth is mainly used for recovering the composite yarns of a plurality of composite fiber cloths, the recovery step is to crush the plurality of composite fiber cloths by a cutting machine to generate composite fiber particles with different sizes, then, the coating layer of the plurality of composite fiber particles and the core yarn layer are thermally fused together by utilizing the difference characteristic of the melting points of the coating layer and the core yarn layer in the plurality of composite fiber particles to form the mixed material, finally, the mixed material is subjected to granulation processing to prepare the plurality of masterbatch with value, the plurality of masterbatch can be further filled into a mould by an extrusion means, an injection means or a filling means according to the product requirement to form a reworked product, and the reworked product package comprises a decoration plate, a hand tool or a ground mat and the like, so that the recovery method of the composite fiber cloth can not only improve the composite fiber pollution caused by the composite fiber cloth and can also realize the recovery of the composite fiber cloth with good recovery value. Drawings FIG. 1 is a flowchart of steps S1 to S4 in a method for recycling and granulating a composite fiber cloth according to a preferred embodiment of the invention. Fig. 2 is a block diagram of a composite yarn in the recovery granulation method of a composite fiber cloth according to a preferred embodiment of the present invention. FIG. 3 is a schematic diagram showing the structure of master batch in the method for recycling and granulating composite fiber cloth according to a p