阅读说明：本技术 一种面状纤维边角料回收再利用方法 (Face-shaped fiber leftover material recycling method ) 是由 乔华 南江琨 庞兴功 崔国新 杨涛 于 2020-06-03 设计创作，主要内容包括：本发明公开了一种面状纤维边角料回收再利用方法,涉及面状纤维回收利用领域,对多种面状纤维边角料,都可以采用联动切割成定长尺寸的纤维片材,再进行纤维分散加工回收,形成一种松散的、有一定长度的、蓬松的短纤维材料,将这种短纤维材料再进行加工成纤维无纺毡、纤维针刺毡、纤维毡预浸料,SMC、BMC等产品的一体化技术。本发明生产效率高,可规模化生产,回收的短纤维用于制备针刺或非针刺纤维毡,性能好于同类型产品,接近全新纤维产品。回收原料来源广泛,价格低廉,且可适用于多种原料织物的纺织方式,对原料的要求较低,利于节约成本。(The invention discloses a method for recycling planar fiber leftover materials, which relates to the field of planar fiber recycling, and can be used for cutting various planar fiber leftover materials into fiber sheets with fixed length and size in a linkage manner, then performing fiber dispersion processing and recycling to form loose and fluffy short fiber materials with certain length, and further processing the short fiber materials into integrated technologies of products such as fiber non-woven felts, fiber needled felts, fiber felt prepreg, SMC (sheet molding compound), BMC (bulk molding compound) and the like. The invention has high production efficiency and can be produced in large scale, and the recycled short fiber is used for preparing the needled or non-needled fiber felt, has better performance than the products of the same type and is close to a brand new fiber product. The recycled raw materials have wide sources and low price, can be suitable for the textile modes of various raw material fabrics, has low requirements on the raw materials, and is beneficial to saving the cost.)

1. A method for recycling planar fiber leftover materials is characterized by comprising the following specific steps:

(1) manually removing adhesive tapes or other materials connected with and mixed with the adhesive tapes or other materials wound on the leftover materials of the planar fiber cloth;

(2) flatly laying the planar fiber cloth on the feed port end of the conveyer belt in a single layer, flatly stacking other planar fiber leftover materials with impurities removed;

(3) setting the cutting length, starting a switch, conveying the stacked fiber cloth to a cutting edge through a conveying belt, and continuously cutting the planar fiber cloth into strip belts with certain sizes under the action of an extrusion roller and a rotary cutter:

(4) carding a strip belt with a certain size according to the other axial direction, flatly placing the strip belt on a conveying belt of second cutting equipment, setting a length range, and cutting the strip belt into a square sheet material with a certain size under the extrusion of a compression roller and the cutting of a rotary cutter;

(5) the square sheet material is continuously conveyed into a dispersing device through a conveying belt, warps or wefts of the sheet fiber fabric are dispersed under the action of a mechanical rotating head, and loose and flocculent fibers are continuously formed;

(6) the loose flocculent fibers are sent to a collecting bag or a collecting box by blast air, and then are made into fiber felts by the processes of opening, carding, needling and the like.

2. The method for recycling planar fiber scraps as claimed in claim 1, wherein: the number of stacked layers in the step (2) is 5-6.

3. The method for recycling planar fiber scraps as claimed in claim 1, wherein: the planar fiber cloth is a planar two-dimensional structural fiber fabric.

4. The method for recycling planar fiber scraps as claimed in claim 3, wherein: the two-dimensional structure of the fabric comprises at least one of plain weave, twill, satin and multiaxial cloth.

5. The method for recycling planar fiber scraps as claimed in claim 1, wherein: the length of the square sheet material is 1/3-1/10 of the length of the short edge of the leftover material of the planar fiber cloth, and the cutting direction of the strip-shaped belt is parallel to the length of the long edge of the leftover material of the planar fiber cloth.

6. The method for recycling planar fiber scraps as claimed in claim 1, wherein: the fiber is at least one of polyester fiber, carbon fiber, terylene, glass fiber, cotton fiber, aramid fiber, hybrid fiber, mixed fiber and composite fiber.

Technical Field

The invention relates to the field of planar fiber recycling, in particular to a planar fiber leftover recycling method and a preparation method thereof.

Background

The planar fiber is a fiber material with a relatively large industrial usage, and includes a two-dimensional fabric of carbon fiber, glass fiber, aramid fiber, hybrid fiber or other fibers, a single-sided cloth of carbon fiber with a hot-melt thread, a multi-axial cloth, a sewn felt, and the like. These fabrics have a plain, twill, satin, multiaxial, unidirectional, various fiber composite fabrics and the like. Generally, after the fabrics are mechanically or manually cut or cut according to the size of the product, a large amount of leftover materials with different sizes and lengths are remained, because the size of the remained leftover materials cannot meet the size requirement of the composite material product and cannot be used by the composite material product, and the remained industrial waste is formed. Because the fiber performance of the waste is excellent, the waste is corrosion-resistant and does not decompose, and the common industrial waste is difficult to treat, so how to recycle the residual industrial waste fibers, fully utilize the excellent performance of the fibers, change waste into valuable, form benefit and benefit for environmental protection, and the technology of recycling raw materials for reducing cost becomes a leading problem and a solution direction of the prior art. However, there are very few patents and technical reports on the recycling technology of these planar fiber scraps, and the recycling technology is only limited to the preparation of small samples in laboratories, and there are no mature precedents and patent documents for the industrialized technology. An effective technical core is not formed, and an industrial technology which can be scaled and is suitable for mass production is formed. Therefore, the patent is a large-scale and mass-producible industrial technology which is independently developed aiming at the technical field, and the technology can be suitable for recovering and reusing all planar fiber leftover materials.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the invention provides a method for recycling and reusing efficient planar fiber leftover materials, which aims to solve various problems in the prior art.

In order to solve the technical problems, the invention provides the following technical scheme:

a method for recycling planar fiber leftover materials comprises the following specific steps:

(1) manually removing adhesive tapes or other materials connected with and mixed with the adhesive tapes or other materials wound on the leftover materials of the planar fiber cloth;

(2) flatly laying the planar fiber cloth on the feed port end of the conveyer belt in a single layer, flatly stacking other planar fiber leftover materials with impurities removed;

(3) setting the cutting length, starting a switch, conveying the stacked fiber cloth to a cutting edge through a conveying belt, and continuously cutting the planar fiber cloth into strip belts with certain sizes under the action of an extrusion roller and a rotary cutter:

(4) carding a strip belt with a certain size according to the other axial direction, flatly placing the strip belt on a conveying belt of second cutting equipment, setting a length range, and cutting the strip belt into a square sheet material with a certain size under the extrusion of a compression roller and the cutting of a rotary cutter;

(5) the square sheet material is continuously conveyed into a dispersing device through a conveying belt, warps or wefts of the sheet fiber fabric are dispersed under the action of a mechanical rotating head, and loose and flocculent fibers are continuously formed;

(6) the loose flocculent fibers are sent to a collecting bag or a collecting box by blast air, and then are made into fiber felts by the processes of opening, carding, needling and the like.

Preferably, the number of layers stacked in the step (2) is 5 to 6.

Preferably, the planar fiber cloth is a planar two-dimensional structural fiber fabric.

Preferably, the two-dimensional structure of the fabric comprises at least one of plain, twill, satin, multiaxial fabric.

Preferably, the side length of the square sheet material is 1/3-1/10 of the length of the short side of the leftover material of the planar fiber cloth, and the cutting direction of the strip-shaped belt is parallel to the long side of the leftover material of the planar fiber cloth.

Preferably, the fiber is at least one of polyester fiber, carbon fiber, terylene, glass fiber, cotton fiber, aramid fiber, hybrid fiber and composite fiber.

The invention has the following beneficial effects:

the invention realizes the purpose of recovering the fibers in the leftover materials by cutting the planar recovered materials into small-size strip-block sheets in a linkage manner and then performing fiber dispersion or scattering, has high efficiency and large-scale production, and the recovered short fibers are used for preparing needled or non-needled fiber felts, have better performance than the same type of products and are close to brand new fiber products. The method has the advantages of wide raw material source, low price, low requirement on raw materials and contribution to saving cost, and is suitable for the textile mode of various raw material fabrics.

Drawings

FIG. 1 is a schematic view of a mechanical structure for recovering face-like fibers;

wherein, 1-a first shearing machine, 2-a second shearing machine, 3-a fiber splitting machine and 4-a fiber collecting box.

Detailed Description

The following examples are included to provide further detailed description of the present invention and to provide those skilled in the art with a more complete, concise, and exact understanding of the principles and spirit of the invention.