High constriction acrylic fibre tow preparing method

Abstract

The present invention involves a high shrinkage acrylic fiber tows slivering method used in stretch-breaking technology of acrylic fiber tows, the method can be used produce acrylic fiber regular top wool. It is characterized by the high shrinkage stretch-breaking technology: electric plate temperature deg.C is the scene temperature; the drafting times of thermal extension area is 1. 23 times -1. 27 times; the gage of rear re-cutting area is 130 mm-135mm; the gage of fore re-cutting area is 110 mm-115mm; regular stretch-breaking technology: electric plate temperature deg.C is the scene temperature; the drafting times of thermal extension area is 1. 23 times -1. 27 times; the gage of rear re-cutting area is 130 mm-135mm; the gage of fore re-cutting area is 110 mm-115mm; the working time of the electric plate and instrument is reduced 65% per year, it prolongs the life of the equipment, ensures the quality of fiber, reduces the cooling energy consumption of cooling circulating water, lightens the work load of cooling-machine system and it is good for improving the indoor working environment temperature.

Description

technical field [0001] The invention relates to a sliver-making method of high-shrinkage acrylic fiber tow applied in the drawing-breaking process of acrylic fiber tow, which can be used to produce regular acrylic wool tops. Background technique [0002] The structure of acrylic fibers is that the acrylic macromolecules are in an irregular helical conformation and do not have a real crystalline structure. Therefore, there are no strict crystalline regions and amorphous regions, only high-order regions and low-order regions. The structure of acrylic fibers It is not as stable as the real crystalline structure, and it shows thermoelasticity when heated. Acrylic puffed tops are processed and manufactured by using this thermoelasticity. The manufacturing principle of acrylic puffy wool top is that acrylic fiber is first stretched under the heating of the breaking machine, and then cooled under the tension. At this time, there is a kind of strain hidden inside the fiber - potenti...

AI Technical Summary

Problems solved by technology

But because this method makes the tow be broken forcibly on the breaking machine, and the breaking in each area is random, so the produced product has a high short hair rate

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