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A method for preparing fibers by adding recycled materials of waste non-woven fabrics

A non-woven fabric, recycled material technology, applied in fiber processing, textile and papermaking, complete sets of equipment for the production of artificial threads, etc. Polymer molecular weight distribution and other problems, to achieve the effect of energy saving and environmental protection production process, reducing labor and material consumption, and good economic benefits

Active Publication Date: 2021-05-11
泉州市易斯特永隆新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the aforementioned prior art, waste polyester or waste polypropylene is used for cleaning, recrystallization and regeneration, or a homogenization kettle is used to adjust the viscosity of waste polyester to form recycled materials, and to prepare polyester fiber or polypropylene fiber, but waste polyester or waste Polypropylene contains or adheres to a large number of pollutants that are difficult to clean and remove, such as stains and even impurities. On the one hand, these pollutants affect the molecular weight and distribution of the polymer, thereby affecting the viscosity and stability of the melt. , will cause the elongation at break, breaking strength, etc. of the fiber product after spinning, but the existing technology cannot solve the problem of effective filtration of impurities or pollutants in waste polyester and waste polypropylene materials, let alone how to filter them in new Technical problems of adding waste polyester or waste polypropylene regenerated materials into materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A method for preparing fibers by adding recycled materials of waste non-woven fabrics
  • A method for preparing fibers by adding recycled materials of waste non-woven fabrics
  • A method for preparing fibers by adding recycled materials of waste non-woven fabrics

Examples

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Embodiment 1

[0071] In this embodiment, recycled waste PP / PE nonwoven fabrics or scraps generated during the production process of PP / PE nonwoven fabrics are used as raw materials, and the recycled melt of waste materials is obtained through the steps of regeneration treatment.

[0072] as attached Figure 1 to Figure 4 , Figure 6 and Figure 7 As shown, the waste non-woven fabric is regenerated to obtain a waste regenerated melt, including the following steps:

[0073] 1) Crushing step: In this step, the waste nonwoven fabric crushing system 21 is a crusher, and the waste nonwoven fabric is broken into sheet-like fabrics with a size not larger than 30mm×30mm by using the crusher.

[0074] 2) The step of pretreatment: adopt the hot cyclone separator 22 to separate the dust, sundries and fine powder in the sheet cloth in step (1), then enter the cleaning process 23 of the sheet cloth, in the cleaning process 23 Washing with hot water at 60-80° C. to wash and remove impurities in the she...

Embodiment 2

[0084] Such as Figure 8 As shown, in this example, component A and component B are used as raw materials, and the regenerated waste nonwoven fabric obtained in Example 1 is added for spinning to obtain a bicomponent fiber, and then a bicomponent nonwoven fabric is obtained.

[0085] In this embodiment, a two-component spinning device is used for spinning, which consists of a first component device (ie component A) and a second component device (ie component B). in:

[0086] The first component device includes: drier 1119 (the first drier), feeding device 112, metering pump 113 (the first main metering system), screw extruder 115 (the first main screw melt extrusion system) . Filter 116 (first main filter system).

[0087] Likewise, the second component device includes: drier 121 ((second drier)), feeding device 122, metering pump 123 (second main metering system), screw extruder 125 (second main screw melt extrusion system), filter 126 (the second main filter system), the ...

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Abstract

The invention relates to a method for preparing fibers by adding regenerated waste non-woven fabrics, which includes the step of regenerating waste non-woven fabrics. The waste non-woven fabrics are broken and pre-treated to form a sheet-like cloth pre-treatment material. The machine is transported to the hopper of the waste material feeding system, and after being metered and pressurized by the metering pump, it enters the small screw extruder for heating and melting treatment to obtain the waste melt. The oil, water vapor and other volatile substances produced during the heating and melting process are sucked out by vacuum; then, the waste melt is transported to the waste filtration system to obtain the waste regeneration melt; the waste regeneration melt enters the inner bin of the feeding bin, and drives The motor drives the feeding screw to rotate, and under the extrusion and shearing force of the feeding screw, the waste recycled melt is transported to the outlet and enters the screw extruder of the spinning device for mixing and homogenizing with the main material , to make fibers through the spinneret assembly.

Description

technical field [0001] The invention relates to the technical field of chemical fiber preparation, in particular to a method for preparing fiber by adding recycled materials of waste non-woven fabrics. Background technique [0002] As we all know, my country is a big country in the textile industry, and it is also a big country in textile consumption. Every year, my country's waste textiles are as high as tens of millions of tons. Among them, polyester, also known as polyester fiber (polyester, PET for short), polyester (PET) is a stable polymer produced by polymerization of terephthalic acid and ethylene glycol, its molecular structure is highly symmetrical, and it has a certain crystallographic orientation. Therefore, polyester fabrics occupy a considerable proportion in waste textiles, but The existing polyester waste materials are almost all buried and incinerated as garbage, causing damage to the environment, and the reuse rate is extremely low. Among them, PP plastic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D1/10
CPCD01D1/106D01D13/00
Inventor 曾飞虎张青海
Owner 泉州市易斯特永隆新材料科技有限公司
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