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Differential shrinkage composite fiber and processing method thereof

A composite fiber and different shrinkage technology, which is applied in the processing field of different shrinkage composite fibers, can solve problems such as production process growth, production cycle field, and equipment investment increase, and achieve stable product quality improvement, less investment in equipment transformation, and melt flow. The effect of volume increase

Inactive Publication Date: 2012-10-24
JIANGSU SHENGHONG CHEM FIBRE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Low production efficiency: the compounding speed of the two-step method is about 800m / min;
[0004] 2. High production cost: The two-step method is that two kinds of fibers are spun separately, wound and then composited through the subsequent process. The production process increases, the equipment investment increases, the floor area is large, the labor cost is high, and the raw material consumption is large. In the production cycle field, the occupation of working capital increases, and the rate of high-quality products is low;
[0005] 3. Unstable quality: the two-step production process is long, with many control points and many influencing factors, making it difficult to control;
However, the different shrinkage composite fibers produced by the one-step method of the above-mentioned chip spinning technology, compared with the different shrinkage composite fibers produced by the one-step method of the melt direct spinning technology, need pelletizing, packaging, drying and other procedures, which increase production costs and make quality control difficult.

Method used

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  • Differential shrinkage composite fiber and processing method thereof
  • Differential shrinkage composite fiber and processing method thereof
  • Differential shrinkage composite fiber and processing method thereof

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Embodiment

[0028] To produce a different shrinkage composite fiber with a specification of 47dtex / 48f, the melt direct spinning technology is adopted, and the spinning and winding are synthesized at one time, and the process steps are as follows:

[0029] ① Raw material esterification reaction: the raw material purified terephthalic acid and ethylene glycol are esterified;

[0030] ②Preparation of polyester melt: after the esterification reaction of the raw materials, the polyester melt is prepared through pre-condensation and final polycondensation, and the viscosity of the prepared polyester melt is 0.650;

[0031] ③ Melt delivery: The melt enters the pre-oriented silk spinning box and the full-drawn silk spinning box through two melt distribution pipes, and the pre-oriented silk spinning box and the full-drawn silk spinning The average temperature of the box is 288°C;

[0032] ④ Simultaneous spinning of pre-oriented yarn (POY) and fully drawn yarn (FDY): the melt entering the pre-ori...

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Abstract

The invention relates to a differential shrinkage composite fiber and a processing method thereof. The processing method includes the sequential steps of subjecting to raw materials, namely pure terephthalic acid and glycol, to esterification to obtain polyester melt, delivering the melt, simultaneously spinning pre-oriented yarns and full-drawn yarns, oiling, pre-interlacing the full-drawn yarns, drafting the full-drawn yarns, interlacing and complexing, and winding to produce the differential shrinkage composite fiber of 47dtex / 48f. Existing equipment is fully modified, spinning and winding are integrated, 20 fixed-length constant-weight spinning cakes can be produced at each station, production efficiency is high, yield is increased, product quality is stable, the produced fiber has differential shrinkage, post-processing gigging is effective, the differential shrinkage composite fiber feels nice, is thick and is widely applicable to production of chiffon and printed fabrics.

Description

technical field [0001] The invention relates to a processing method for producing composite fibers on melt direct spinning, in particular, two different fiber raw materials can be spun, combined and wound in one step, and spinning and winding can be produced simultaneously. The processing method of different shrinkage composite fibers of 20 fixed-length and fixed-weight silk cakes. Background technique [0002] Due to production technology reasons, domestic manufacturers generally adopt a two-step method to produce different shrinkage composite fibers. The number of spinning and winding heads of this production method is mostly 6 heads, 12 heads, and at most 20 heads, which is an ordinary conventional spinning method. Silk and winding technology, through the separate spinning of pre-oriented yarn (POY) and fully drawn yarn (FDY), winding and then unwinding and net processing to produce different shrinkage composite fibers, the two-step production has the following disadvanta...

Claims

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Application Information

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IPC IPC(8): D02G1/18D01D5/092D01F6/62C08G63/183
Inventor 张叶兴梅锋朱军营廖荣武林镇勇徐广宇
Owner JIANGSU SHENGHONG CHEM FIBRE CO LTD
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