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Method for spinning high-strength polyester staple fibers by using waste polyester

A polyester staple fiber, high-strength technology, applied in the field of polyester staple fiber, can solve the problems of limited resources and high cost, and achieve the effect of eliminating static electricity, high productivity and high quality

Inactive Publication Date: 2012-10-03
广东秋盛资源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing 1.2-denier polyester staple fiber is all made of virgin polyester chips and melt direct spinning, and its products are commonly referred to as "big chemical fibers". Because both virgin polyester chips and melt direct spinning require a large amount of Petroleum refining, high cost, limited resources
At present, the high-strength 1.2-denier polyester staple fiber made of waste polyester materials has not been reported in the literature.

Method used

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  • Method for spinning high-strength polyester staple fibers by using waste polyester
  • Method for spinning high-strength polyester staple fibers by using waste polyester
  • Method for spinning high-strength polyester staple fibers by using waste polyester

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Embodiment Construction

[0014] Now take the method of spinning high-strength 1.2-denier regenerated polyester staple fiber from waste polyester as an example to illustrate the specific implementation of the present invention.

[0015] The method for spinning high-strength 1.2-denier regenerated polyester staple fiber from waste polyester, the main process includes: vacuum drying, extrusion melting, filtering, high-pressure spinning, cooling with ring blowing, drafting, tension heat setting, curling and relaxation heat setting, this The implementation method is to make the following improvements and adjustments in the above-mentioned conventional process flow:

[0016] (1) On the basis of the conventional spinning process conditions, a sea sand filter is added in the spinning assembly, so that the molten material is precisely filtered through the sea sand filter, so as to obtain a clean melt consistent with the original material.

[0017] refer to figure 1 , the existing spinning assembly is composed...

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Abstract

The invention relates to a method for spinning high-strength polyester staple fibers by using waste polyester. The method is characterized in that on the basis of the conventional spinning process condition, a sea sand filter is added into a spinning assembly, and a molten material is filtered finely by using the sea sand filter, so that a melt of which the cleanliness is consistent with that of a raw material is obtained; a central oil feeding process is added after a circular air blow cooling process, and oil is fed to tows which are cooled by circular air blow through a central oil feeding device, so that the tows are further cooled after adsorbing oil, and static electricity is eliminated simultaneously; a tensioning and thermal setting device is partitioned into seventeen drums in four groups; a first group consists of five drums; each of the other groups consists of four drums; saturated steam is used for heating the insides of the drums; the heating temperature of the first group is 125-130 DEG C; the heating temperature of the second group is 145-150 DEG C; the heating temperature of the third group is 165-170 DEG C; and the heating temperature of the fourth group is 185-190 DEG C. The fiber linear density of the regenerated polyester staple fibers produced from waste polyester is below 1.2denier, the breaking strength is 6.0cN / dtex, the dry-hot shrinkage is 5-7 percent, and superior indexes of high tenacity and low elongation are achieved.

Description

technical field [0001] The invention belongs to the technical field of regenerated polyester fiber production, and in particular relates to a method for producing polyester staple fiber from waste polyester raw materials. Background technique [0002] The existing 1.2-denier polyester staple fiber is all made of virgin polyester chips and melt direct spinning, and its products are commonly referred to as "big chemical fibers". Because both virgin polyester chips and melt direct spinning require a large amount of It is refined from petroleum, which has high cost and limited resources. There are no reports in the literature on high-strength 1.2-denier polyester staple fibers made from waste polyester materials at present. Contents of the invention [0003] The purpose of the present invention is to improve the existing process of spinning polyester staple fibers from waste polyester, and provide a method for producing high-strength 1.2-denier polyester staple fibers from wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/092D01D5/096D01D1/10D01D10/02
Inventor 马俊滨张开友付文虎
Owner 广东秋盛资源股份有限公司
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