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Preparation method of polyester composited superfine fibers with ultrahigh shrinking percentage

A polyester-nylon composite and superfine fiber technology, which is applied in fiber processing, melt spinning, and conjugated synthetic polymer rayon, can solve the problems of loose fabric structure and low shrinkage of polyester-nylon composite superfine fibers, etc. , to achieve the effect of tight fabric structure and excellent processability

Inactive Publication Date: 2014-09-03
YINGKOU SANXIN SYNTHETIC FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the shrinkage rate of the polyester-nylon composite superfine fiber prepared by the processing method of the polyester-nylon composite superfine fiber in the prior art is too low, and the obtained fabric structure is not tight enough to meet people's needs. A preparation method of polyester-nylon composite ultrafine fiber with ultra-high shrinkage rate is proposed

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a method for preparing polyester / nylon composite microfibers with ultra-high shrinkage. The prepared polyester / nylon composite superfine fibers have an average fineness of 83.3dtex / 36f. The preparation method includes:

[0026] (1) Pre-crystallize 80 parts by weight of the above-mentioned high-shrinkage polyester chips on a crystallization bed. The crystallization bed described in this embodiment adopts a vertical partition bed, wherein the pre-crystallization temperature is 130° C., and the pre-crystallization time is 40 minutes; Next, put the pre-crystallized high-shrinkage polyester chips into a packed drying tower and dry them with dehumidified dry air. The drying temperature is 140°C and the drying time is 14 hours. The content of the high-shrinkage polyester chips after drying is The amount of water is 35ppm; then, the dried high-shrinkage polyester chips are entered into the first screw extruder for melting to obtain the first spinning mel...

Embodiment 2

[0035] This embodiment provides a method for preparing polyester / nylon composite microfibers with ultra-high shrinkage. The prepared polyester / nylon composite superfine fibers have an average fineness of 83.3dtex / 36f. The preparation method includes:

[0036] (1) Pre-crystallize 70 parts by weight of the high-shrinkage polyester chips prepared above on a crystallization bed. The time is 20 minutes; then, the pre-crystallized high-shrinkage polyester chips are sent to the packed drying tower, and dried with dehumidified dry air. The drying temperature is 155 ° C, and the drying time is 10 hours. The water content of the polyester chips is 28ppm; then, the dried high-shrinkage polyester chips are put into the first screw extruder for melting to obtain the first spinning melt, wherein the first screw extruder is divided into five sections for heating control , the first-stage heating temperature is 275°C, the second-stage heating temperature is 280°C, the third-stage heating temp...

Embodiment 3

[0043] This embodiment provides a method for preparing polyester / nylon composite microfibers with ultra-high shrinkage. The prepared polyester / nylon composite superfine fibers have an average fineness of 83.3dtex / 36f. The preparation method includes:

[0044] (1) Pre-crystallize 70 parts by weight of the prepared high-shrinkage polyester chips on a crystallization bed. The crystallization bed in this embodiment adopts a vertical partition bed, wherein the pre-crystallization temperature is 155 ° C The time is 20 minutes; then, the pre-crystallized high-shrinkage polyester chips are put into the packed drying tower and dried with dehumidified dry air. The drying temperature is 160°C and the drying time is 10 hours. The water content of the ester chips is 28ppm; then, the dried high-shrinkage polyester chips are entered into the first screw extruder for melting to obtain the first spinning melt, wherein the first screw extruder is heated in five sections, The first-stage heating...

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Abstract

The invention discloses a preparation method of polyester composited superfine fibers with ultrahigh shrinking percentage. The preparation method comprises the steps of drying high-shrinkage polyester chips and melting in a first screw extruder to obtain a first spinning melt, wherein the intrinsic viscosity of the high-shrinkage polyester chip is 0.60-1.00dl / g; drying polyamide-6 chips and melting in a second screw extruder to obtain a second spinning melt, wherein the relative viscosity of the polyamide-6 chip is 2.35-2.80, the mass ratio of the high-shrinkage polyester chip and the polyamide-6 chip is 80:20-60:40; compositely spinning the first spinning melt with the second spinning melt to prepare polyester pre-oriented yarns (POY), then producing DTY (Draw texturing yarn) with an elasticizer. Superfine polyester and nylon composited fibers prepared by the method has boiling water shrinkage up to more than 15%, and the fabric after follow-up treatments such as alkali-peeling fiber opening has compact texture.

Description

technical field [0001] The invention relates to a preparation method of polyester nylon composite ultrafine fiber with ultrahigh shrinkage rate, and belongs to the technical field of polyester nylon composite ultrafine fiber. Background technique [0002] Microfibers use two incompatible but similar viscosity polymers to make composite fibers with two-component melt arrangement cross-sectional shapes through spinning components, and then separate the two components by physical or chemical methods. A composite was prepared. With the development of microfiber technology, microfiber has opened up an unprecedented outlet in the textile field, which is mainly used in high-grade fabrics, high-performance wiping products and high-density fabrics. At present, the most widely used microfiber is polyester-nylon composite microfiber, which is a combination of PET (polyethylene terephthalate, commonly known as polyester or polyester chips) and PA (polyethylene terephthalate). Amide, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/12D01D5/28D01D5/08D01D5/088
Inventor 梅艳芳
Owner YINGKOU SANXIN SYNTHETIC FIBER