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Preparation method of color-concentrated type composite polyester drawn textured yarn

A polyester low elastic yarn, color concentration type technology, applied in the melting of filament raw materials, melt spinning, filament/thread forming, etc. The effect of reducing production costs

Inactive Publication Date: 2012-11-21
ZHANGJIAGANG JINYI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This product highlights the improvement of the color of sea-island microfibers, and breaks through the limitation of not deep dyeing of sea-island fibers. Even if a large amount of dye is added to make the color darker, the downstream is easy to fade, causing serious environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The preparation method of color-concentrated composite polyester low-stretch yarn is made of sea-island superfine polyester fiber made of semi-dull polyester chip and water-soluble polyester chip by conjugate spinning in proportion and high-shrinkage polyester fiber made of high-shrinkage chip. Fiber is a raw material, comprising the following steps:

[0012] (1) Using semi-dull polyester chips as raw materials, pass the semi-dull polyester chips through the wet chip silo and enter the pre-crystallization fluidized bed. The pre-crystallization temperature is controlled at 165°C, the pre-crystallization time is 30 minutes, and the drying temperature is 168°C. , the drying time is 8 hours, and at the same time, the white masterbatch physical additive polyethylene oxide is added in a proportion of 3%; the dried semi-dull polyester chips are melted at high temperature by a screw extruder, and the melt impurities are filtered, and the temperature is controlled at 270 ° C. Th...

Embodiment 2

[0016] The preparation method of color-concentrated composite polyester low-stretch yarn is made of sea-island superfine polyester fiber made of semi-dull polyester chip and water-soluble polyester chip by conjugate spinning in proportion and high-shrinkage polyester fiber made of high-shrinkage chip. Fiber is a raw material, comprising the following steps:

[0017] (1) Using semi-dull polyester chips as raw materials, pass the semi-dull polyester chips through the wet chip silo and enter the pre-crystallization fluidized bed, control the pre-crystallization temperature to 175°C, the pre-crystallization time to 15 minutes, and the drying temperature to 175°C , the drying time is 6 hours, and at the same time, add the white masterbatch physical additive polyethylene oxide in a proportion of 8%; the dried semi-dull polyester chips are melted at high temperature by a screw extruder, and the melt impurities are filtered, and the temperature is controlled at 290 ° C. The precision ...

Embodiment 3

[0021] The preparation method of color-concentrated composite polyester low-stretch yarn is made of sea-island superfine polyester fiber made of semi-dull polyester chip and water-soluble polyester chip by conjugate spinning in proportion and high-shrinkage polyester fiber made of high-shrinkage chip. Fiber is a raw material, comprising the following steps:

[0022] (1) Using semi-dull polyester chips as raw materials, pass the semi-dull polyester chips through the wet chip silo and enter the pre-crystallization fluidized bed. The pre-crystallization temperature is controlled at 170°C, the pre-crystallization time is 22.5 minutes, and the drying temperature is 172°C. , the drying time is 7 hours, and at the same time, the white masterbatch physical additive polyethylene oxide is added in a proportion of 5%; the dried semi-dull polyester chips are melted at high temperature by a screw extruder, and the melt impurities are filtered, and the temperature is controlled at 280 ° C. ...

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PUM

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Abstract

The invention relates to a preparation method of a color-concentrated type composite polyester drawn textured yarn. A sea-island super-fine polyester fiber prepared from a semi-dull polyester chip and a water-soluble polyester chip in a conjugate spinning manner according to a ratio and a high-shrinkage polyster fiber prepared from a high-shrinkage slice are used as raw materials; the preparation method comprises the following steps of: (1) taking the semi-dull polyester chip as the raw material, and performing pre-crystallization and drying; adding white masterbatch physical additive polyoxyethylene according to the ratio of 3%-8%, carrying out high-temperature fusing by a screw extruder, and forming a semi-dull polyester polymer; (2) independently drying another water-soluble polyester chip, carrying out high-temperature fusing by the screw extruder to form a water soluble polymer; and (3) gathering the polymers to mix, wherein the water soluble polymer accounts for 30%; forming marine facies with a tow section, wherein the semi-dull polyester accounts for 70%; forming an island phase with the tow section, and preparing a sea-island POY (polyester pre-oriented yarn) product; and, together with a polyester FDY (polypropylene drawn yarn), forming the color-concentrated type composite polyester drawn textured yarn by meshwork joint.

Description

technical field [0001] The invention relates to a method for preparing color-concentrated composite polyester low elastic yarn. Background technique [0002] The color-intensity composite polyester low-stretch yarn is made of color-intensity sea-island superfine fibers and high-shrinkage polyester fibers through a composite processing network to make a plied yarn with different shrinkage properties. Sea-island microfibers disperse a polymer with physical additives added in proportion to another polymer. The dispersed phase in the fiber cross-section is in the state of "islands", while the matrix is ​​equivalent to "sea". Finally, the sea-island component was dissolved through fabric post-finishing to obtain a new type of superfine fiber with a monofilament fineness of 0.12D. The high-shrinkage fiber uses slices of different chemical structures to change its internal gravity according to the orientation of its internal molecular structure at different temperatures, so that t...

Claims

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Application Information

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IPC IPC(8): D01D5/30D01D5/08D01D1/04D02G1/02D02J1/08
Inventor 徐汉兴
Owner ZHANGJIAGANG JINYI CHEM FIBER