Method for preventing yarn breakage

A yarn and process technology, applied in the field of preventing yarn breakage, to achieve the effect of simplifying spinning and washing/neutralization process, reducing winding and yarn breakage, and being easy to be damaged

Active Publication Date: 2010-12-29
TEIJIN ARAMID BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using only synchronous roller drive motors does not sufficiently reduce yarn breakage,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The invention is illustrated by the following examples.

[0013] A. Treat 440 dtex PPTA (poly-para-anilide terephthalamide) yarn with water and dilute alkali using a conventional winder for washing and neutralization. The yarn spacing is 0.48 cm. The spun fibers are washed with water at room temperature by spraying water on the yarn bundle using a liquid splitter rod. The run time before breaking is between 4 and 32 hours (about 15 hours on average).

[0014] B. Use winder to wash and neutralize 420 dtex PPTA yarn treated with water and dilute alkali. The yarn spacing is 0.40 cm. The spun fibers are washed and neutralized using 20 jet washers per bundle. The operating time before breaking is variable (running time can be several months without breaking).

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PUM

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Abstract

The invention pertains to the use of a multifilament yarn spinning process comprising individually washing each filament of a multifilament yarn and, if neutralized, individually neutralizing each filament of the multifilament yarn, for preventing yarn breakage during the spinning process, the spinning process comprising spinning of a polymer through a spinneret to obtain the multifilament yarn, washing the yarn, and optionally neutralizing and/or drying the yarn and winding the yarn onto a bobbin Preferably the yarn is washed with jet washers.

Description

technical field [0001] The present invention relates to a method for preventing yarn breakage during the spinning process of filament yarns. Background technique [0002] A common problem in yarn manufacture is that the yarn breaks on the roll machine during liquid handling. During the liquid treatment of yarn, such as during washing of the yarn immediately after spinning, the yarn is usually turned several times around a pair of rollers and the yarn is sprayed or otherwise mixed with the washing liquid touch. Difficulty maintaining process continuity due to yarn breakage and spinning process stoppage due to filament breakage. It is therefore common to minimize this problem by keeping the spun yarns separated from each other. In US 5,034,250 it is described that yarn breakage on rollers during liquid handling can be mitigated by using synchronous motors to drive pairs of rollers. It has been found that the use of such synchronous motors arranged to drive the rollers at s...

Claims

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Application Information

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IPC IPC(8): D01D10/06D01F6/60
CPCD01F6/605D01D10/06
Inventor S·J·索贝尔S·S·A·图伊吉普
Owner TEIJIN ARAMID BV
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