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Preparation process of regenerated polyester staple fibers with strong hygroscopicity

A technology of regenerated polyester and preparation process, which is applied in fiber treatment, fiber chemical characteristics, rayon manufacturing, etc. It can solve the problems of unbearable heat, poor moisture absorption and perspiration ability, and poor hygroscopicity of regenerated polyester fiber, so as to avoid stuffy heat Unbearable, soft clothes, enhanced perspiration

Inactive Publication Date: 2020-04-10
HANGZHOU BENMA CHEMFIBER & SPINNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regenerated polyester fiber needs to experience at least one more melting during processing, which leads to secondary crystallization of polyester fiber, which makes the crystallinity of recycled polyester fiber higher than that of virgin polyester fiber, and finally leads to the hygroscopicity of recycled polyester fiber. The hygroscopicity of virgin polyester fiber is worse, so that the clothes made of recycled polyester fiber have poor moisture absorption and perspiration ability, and people will feel stuffy when wearing clothes made of recycled polyester fiber

Method used

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  • Preparation process of regenerated polyester staple fibers with strong hygroscopicity
  • Preparation process of regenerated polyester staple fibers with strong hygroscopicity
  • Preparation process of regenerated polyester staple fibers with strong hygroscopicity

Examples

Experimental program
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Effect test

Embodiment 1

[0039] refer to figure 1 , a preparation process of regenerated polyester staple fiber with strong hygroscopicity, which is processed through the following steps:

[0040] S1: Raw material preparation. Firstly, the recycled mineral water bottles are cleaned and disinfected repeatedly, and then cut.

[0041] S2: pre-processing. Sorting the materials after S1 treatment, and then put the materials into the rotary drum vacuum dryer. After the feeding is completed, adjust the temperature in the drum to 65°C, and feed the heat transfer oil, and start the drum at the same time, so that The drum turns. At the same time, start the vacuum pump to evacuate the drum, and keep the vacuum at 70pa, the drying time is 10h, and the moisture content of the bottle flakes is controlled below 0.01%.

[0042] S3: heating and melting.

[0043]Preparation of hygroscopic polyester masterbatch. The chemical composition of the hygroscopic polyester masterbatch is 35 parts by weight of hydrophilic ...

Embodiment 22

[0068] The difference between Example 22 and Example 1 is that there is no decyl betaine in the chemical composition of the oiling agent in step S6.

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Abstract

The invention relates to the manufacturing field of a regenerated chemical fiber technology, and discloses a preparation process of regenerated polyester staple fibers with the strong hygroscopicity.Bottle sheets are subjected to the following steps of S1, preparing raw materials; S2, carrying out pretreatment; S3, carrying out heating melting, wherein the materials treated with the step S2 and hygroscopic polyester master batches are mixed and then are jointly heated to be molten, and the mass ratio of the hygroscopic polyester master batches to the materials treated with the step S2 is 1 :(6-14); S4, carrying out spinning; S5, carrying out cooling forming; S6, carrying out oiling; S7, carrying out winding and bundling; and S8, carrying out crimping and cutting. The regenerated polyester staple fibers with the strong hygroscopicity are prepared through the steps. The pretreated bottle sheets and the hygroscopic polyester master batches are mixed and jointly heated to be in a moltenstate, so that the hygroscopic polyester master batches and substances after dissolution of the bottle sheets are mixed with each other, the finally prepared polyester staple fibers have the hygroscopicity, the sweat releasing capacity of clothes made of the polyester staple fibers is enhanced, and the feeling of stuffiness is avoided.

Description

technical field [0001] The invention relates to the manufacturing field of regenerated chemical fibers, more specifically, it relates to a preparation process of regenerated polyester staple fibers with strong hygroscopicity. Background technique [0002] Regenerated polyester staple fiber refers to the use of polyester cloth, waste polyester bottle flakes, spinning waste, foam material, pulp, etc. as raw materials. The waste and old bottle flakes are crushed, cleaned, mixed with various materials, and then dried. Melt extrusion, spinning, winding, bundling, drawing, crimping, relaxation heat setting, and cutting to form polyester staple fibers of different lengths. The use of recycled polyester can improve the current shortage of textile raw materials in my country, and the processing method of waste utilization is in line with the concept of environmental protection. [0003] The essential difference between recycled polyester fiber and virgin polyester fiber is that recy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10D01F11/06D01D5/08D01D5/096D06B3/04
CPCD01F6/92D01F1/10D01F11/06D01D5/08D01D5/096D06B3/04
Inventor 施建江
Owner HANGZHOU BENMA CHEMFIBER & SPINNING
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