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Method for producing regenerated polyester staple fibers from waste plastic bottles

A technology for recycled polyester and waste plastics, applied in the field of recycled polyester staple fibers, can solve the problems of poor textile performance, poor product quality, and many impurities of recycled polyester staple fibers, and achieve the effects of good textile performance, improved quality, and reuse.

Pending Publication Date: 2021-03-16
贵州南阳彩纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many impurities in the recycled plastic sheets at present, and the quality of the produced products is poor, especially the produced recycled polyester staple fiber has poor textile performance. Therefore, it is urgent to improve the existing process to meet the needs of use. Recycling waste plastic bottles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for producing recycled polyester staple fibers from waste plastic bottles, comprising the following steps:

[0025] (1) Primary selection: Sorting the recycled plastic bottles to sort out the recyclable plastic bottles;

[0026] (2) Disinfection treatment: Put the recyclable plastic bottle into the disinfection pool filled with disinfectant solution for 10-20 minutes for disinfection treatment;

[0027] (3) Crushing: Send the sterilized plastic bottle into the crusher for crushing, and add disinfectant at the same time to obtain (1-5) cm╳ (1-5) cm plastic pieces;

[0028] (4) Cleaning: Clean the plastic sheets and select qualified plastic sheets;

[0029] (5) Dehydration and drying: The selected plastic sheets are subjected to centrifugal dehydration, and dried in a dryer at a temperature of 50-60°C to obtain dried plastic sheets;

[0030] (6) Wind selection: put the dry plastic flakes in the sorting machine, and separate the plastic flakes of the mouth of th...

Embodiment 2

[0037] A method for producing recycled polyester staple fibers from waste plastic bottles, comprising the following steps:

[0038] (1) Primary selection: Sorting the recycled plastic bottles to sort out the recyclable plastic bottles;

[0039] (2) Disinfection treatment: Put the recyclable plastic bottle into the disinfection pool filled with disinfectant solution for 10-20 minutes for disinfection treatment;

[0040] (3) Crushing: Send the sterilized plastic bottle into the crusher for crushing, and add disinfectant at the same time to obtain (1-5) cm╳ (1-5) cm plastic pieces;

[0041] (4) Cleaning: Clean the plastic sheets and select qualified plastic sheets;

[0042] (5) Dehydration and drying: The selected plastic sheets are subjected to centrifugal dehydration, and dried in a dryer at a temperature of 50-60°C to obtain dried plastic sheets;

[0043] (6) Wind selection: put the dry plastic flakes in the sorting machine, and separate the plastic flakes of the mouth of th...

Embodiment 3

[0050] A method for producing recycled polyester staple fibers from waste plastic bottles, comprising the following steps:

[0051] (1) Primary selection: Sorting the recycled plastic bottles to sort out the recyclable plastic bottles;

[0052] (2) Disinfection treatment: Put the recyclable plastic bottle into the disinfection pool filled with disinfectant solution for 10-20 minutes for disinfection treatment;

[0053] (3) Crushing: Send the sterilized plastic bottle into the crusher for crushing, and add disinfectant at the same time to obtain (1-5) cm╳ (1-5) cm plastic pieces;

[0054] (4) Cleaning: Clean the plastic sheets and select qualified plastic sheets;

[0055] (5) Dehydration and drying: The selected plastic sheets are subjected to centrifugal dehydration, and dried in a dryer at a temperature of 50-60°C to obtain dried plastic sheets;

[0056] (6) Wind selection: put the dry plastic flakes in the sorting machine, and separate the plastic flakes of the mouth of th...

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PUM

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Abstract

The invention discloses a method for producing regenerated polyester staple fibers from waste plastic bottles. The method comprises the following steps: (1) primary selection; (2) disinfection treatment; (3) crushing; (4) cleaning; (5) dehydrating and drying; (6) winnowing; (7) granulating; and (8) preparation of the regenerated polyester staple fibers. Through three times of cleaning, residual liquid, silt, iron and other high-density substances and low-density substances in the plastic bottles are fully removed, labels and rubber are effectively separated from plastic sheets, the quality ofthe regenerated polyester staple fibers is improved, environmental protection is achieved, and reutilization of the waste plastic bottles is achieved. Disinfection is carried out while crushing is carried out, that is, disinfection treatment is carried out twice, so that the prepared regenerated polyester staple fibers are good in textile performance.

Description

technical field [0001] The invention belongs to the technical field of recycled polyester staple fibers, and in particular relates to a method for producing recycled polyester staple fibers from waste plastic bottles. Background technique [0002] At present, most of the old plastic bottles and waste plastics have great utilization value, which can be used as packaging materials, daily necessities, industrial supplies and household products, etc., and can also be recycled to make clothes, because the very important main material of plastic bottles is generally It is PP and PET, and PET is one of the most important raw materials for making clothing fabrics. After recycling, bottles made of PET can be made into packaging sheets, blister boxes, packaging ties, chemical fiber spinning, cotton, polyester fabrics, geotechnical filters, etc. However, there are many impurities in the recycled plastic sheets at present, and the quality of the produced products is poor, especially th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29B17/00B29B17/04B29B17/02A61L11/00A61L2/18
CPCB29B9/06B29B17/00B29B17/0412B29B17/02A61L11/00A61L2/18B29B2017/0015B29B2017/0241Y02W30/52Y02W30/62
Inventor 叶学良叶亚军朱涵晓陈建龙
Owner 贵州南阳彩纤有限公司
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