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Production method of composite elastic polyester fiber

An elastic polyester and production method technology, applied in fiber processing, melt spinning, stretch spinning, etc., can solve the problems of large investment in production process, high production energy consumption, low production efficiency, etc., to reduce raw material costs, The effect of reducing production energy consumption and improving production efficiency

Inactive Publication Date: 2018-10-19
BEIJING CHONGLEE MACHINERY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of this elastic polyester fiber usually adopts a two-step method, that is, the first step is to obtain undrawn filaments through composite spinning equipment, and then draw them into final products on a flat drawing machine. This production process requires a large investment and high energy consumption. Low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare 111dtex / 48f side-by-side composite elastic polyester fiber according to the process of the present invention, the used modified PBT chip [η]=1.1~1.3dL / g, melting point is 208~213 DEG C, water content≤0.02%; [η]=0.5 dL / g, melting point 258-263°C, water content ≤0.05%; using Φ80 screw, length-to-diameter ratio 25, low-viscosity polyester chip compression ratio 2.85, heating in five zones, the temperature of each zone of the modified PBT screw is: 1 The temperature in zone 230°C, the temperature in zone 2 is 240°C, the temperature in zone 3 is 245°C, the temperature in zone 4 is 248°C, the temperature in zone 5 is 250°C, the temperature of spinning box is 250°C; the temperature in each zone of the low-viscosity polyester screw is: the temperature in zone 1 is 260 °C, the temperature in the second zone is 265°C, the temperature in the third zone is 270°C, the temperature in the fourth zone is 270°C, the temperature in the fifth zone is 270°C, and the temperature of t...

Embodiment 2

[0033] The 83dtex / 24f side-by-side composite elastic polyester fiber is prepared according to the process method of the invention. The PTT chip used [η]=1.1~1.3dL / g, the melting point is 208~213℃, the water content is ≤0.02%; the low-viscosity polyester chip [η]=0.5dL / g, the melting point is 258~263℃, the water content is ≤0.05% %; using Φ80 screw, length-to-diameter ratio of 25, compression ratio of 2.85, heating in five zones, the temperature of each zone of the PTT screw is: the temperature of the first zone is 230°C, the temperature of the second zone is 240°C, the temperature of the third zone is 245°C, and the temperature of the fourth zone is 248 ℃, the temperature in the fifth zone is 250 ℃, the temperature of the spinning box is 250 ℃; the temperature in each zone of the low-viscosity polyester screw is respectively: the temperature in the first zone is 260 ℃, the temperature in the second zone is 265 ℃, the temperature in the third zone is 270 ℃, the temperature in th...

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PUM

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Abstract

The invention discloses a production method of a composite elastic polyester fiber. The composite elastic polyester fiber can be produced by one step, the fiber is stable in elasticity, good in resilience and not prone to aging and replaces covered spandex yarn, and the problem about environmental protection and the problem of aging of spandex are solved. Compared with the traditional two-step method, the one-step production process has the advantages that production energy consumption is reduced, and production efficiency is improved. Besides, compared with single-component PTT (polytrimethylene terephthalate) fiber, by means of the composite spinning production process, raw material cost is reduced, and fabric style is improved.

Description

technical field [0001] The invention relates to a production method of composite elastic polyester fibers, which belongs to the field of composite fibers. Background technique [0002] Elastic fiber fabric has the characteristics of good comfort and shape retention, and is more and more favored by people. At present, the elastic fibers on the market mainly include polyurethane elastic fibers (spandex), PTT (polytrimethylene terephthalate) and PET / PTT composite elastic fibers (hereinafter referred to as T400). [0003] The production equipment and process of spandex elastic fiber are complicated, the cost of raw materials and processing is high, the price is expensive, and there are "three wastes" pollution. Bleaching, difficult dyeing, easy fiber fusing during high-temperature finishing, "whitening" or "bubbling" when the fabric is drawn, excess elasticity, poor comfort, and easy aging and broken threads. [0004] PTT fiber has the stability of polyester and the softness o...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/10D01D5/08D01D5/088D01D5/12D01D5/253D01D5/32D01D10/02
CPCD01D1/106D01D5/08D01D5/088D01D5/12D01D5/253D01D5/32D01D10/02
Inventor 许海军张红亮王兴柏李秀宾
Owner BEIJING CHONGLEE MACHINERY ENG