Method and equipment for stretching animal fibres

An animal fiber and equipment technology, applied in drafting equipment, textiles and papermaking, spinning machines, etc., can solve the problems of low speed, low stretching force, and high energy consumption, so as to improve efficiency or output, improve Fiber quality, the effect of increasing vehicle speed

Inactive Publication Date: 2002-08-14
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has the following deficiencies: first, the one-step fiber pretreatment process used cannot fully open the macromolecular linkages such as hydrogen bonds and disulfide bonds in the animal hair fiber, which is unfavorable for subsequent wet heat stretching; The multi-roller false-twisting stretching device used in this technology adopts multiple sets of belt drives, and the transmission is not stable enough under the condition of frequent changes in humid and hot conditions; multiple stretching rolls arranged in the axial direction are dislocated up and down, and do not mesh with each other Or no grip, no pressure, the stretching force mainly comes from the false twist of the top itself and the friction with the stretching roller, the stretching force is not large, the speed cannot be fast, it belongs to passive stretching; therefore, multiple rollers must be used Continuous stretching (a false twister in the embodiment adopts 8 stretching rollers arranged axially), otherwise the quality cannot be guaranteed; simultaneously, the stretching mechanism is huge and complicated, and it is also inconvenient to use
The third is that the technical setting process continuously uses heat (steam or hot water) for setting, which consumes a lot of energy, and the setting effect is not ideal, and it also affects the working environment.

Method used

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  • Method and equipment for stretching animal fibres
  • Method and equipment for stretching animal fibres
  • Method and equipment for stretching animal fibres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Raw materials: pure wool tops, average fiber fineness 21.35um, average length 85.4mm, strip weight 20g / m. Add NaHSO to the 80°C aqueous solution in the bath of pretreatment device 1 3 5% (weight), ph value is 9, soaks this wool top; With 10 m / min speed, wool top is fed into the damp heat storage box, deposits 40 minutes in the storage box. Then, the wool sliver is fed into the described 6-zone wet heat stretching equipment at the same speed for wet heat stretching. The stretching process parameters are as follows: 6 zones of stretching ratio are: 1.04 / 1.3 / 1.3 / 1.04 / 1.04 / 1.04; the temperature inside the stretching box is 100°C, and the humidity is 80%; The pressure is 400kg; the number of revolutions of the false twister is 260 rpm. After stretching, it is shaped by a three-slot sizing equipment. Among them, the first tank is washed with cold water, the second tank is washed with 80°C hot water, and the third tank is washed with 60°C hot water. Finally, it is dried by...

Embodiment 2

[0047] Processing condition is with embodiment 1. The difference is that after stretching, permanent setting is carried out by three-slot setting equipment. Wherein, the first tank is washed with cold water, the second tank is hot water at 80°C, and 1% (weight) of H is added to the water. 2 o 2 (35% concentration), boil and wash with 60 ℃ hot water in the third tank. Finally, it is dried by hot air to obtain the stretched top product. Through experiments, the average fineness of the product wool is 18.86um, and the length is 121.33mm; the boiling water shrinkage rate of the stretched wool top is 5%. Worsted wool yarn of 12.5dtex can be processed from this top.

Embodiment 3

[0049] Raw materials: pure wool tops, average fiber fineness 20.65um, average length 79.54mm, strip weight 20g / m. Add 3% (weight) of mercaptoacetic acid in the 100 ℃ aqueous solution in the bath of pretreatment device 1, ph value is 3.5, soaks this wool top; With 15 m / min speed, wool top is fed into the wet heat storage box, deposits in the storage box 60 minutes. Then, the wool sliver is fed into the described 6-zone wet heat stretching equipment at the same speed for wet heat stretching. The stretching process parameters are: stretching ratio of 6 zones: 1.02 / 1.2 / 1.2 / 1.04 / 1.04 / 1.04; the temperature inside the stretching box is 95°C, and the humidity is 90%; The pressure is 300kg; the number of revolutions of the false twister is 320 rpm. After stretching, it is shaped by a three-slot sizing equipment. Among them, the first tank is rinsed with cold water, the second tank is heated with 60°C hot water, and the third tank is washed with 60°C hot water. Finally, it is dried ...

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Abstract

A method for stretching animal's fibre includes such steps as pre-processing including infiltrating it in chemical liquid, rolling by rollers and wet-hot storage, wet-hot stretching, shape fixating and baking. Its apparatus is composed of infiltrating unit for infiltating twice and rolling twice, and false-twisting stretcher with planetary gear chain. Its advantages are high effect on improving length and fineness, and stable quality.

Description

(1) Technical field [0001] The present invention relates to the processing technology of natural fibers, specifically a stretching method and equipment for animal fibers, and the International Patent Classification No. is intended to be Int.Cl 7 .D02J 1 / 22; D01H 5 / 28. (2) Background technology [0002] The length and fineness of natural animal fibers for textile are the two main and most important indexes or parameters. The longer the length and the finer the fineness of natural animal fiber, the better its spinning performance, the higher the quality of the product, and therefore the higher its price. However, the length and fineness of natural animal fibers are limited by objective conditions or natural conditions, and their length and fineness are limited within a certain range, which generally will not exceed. In particular, the longer the length of natural animal fibers, the thicker the fineness; conversely, the finer the fineness, the shorter the length. Desirable t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01H5/28D02J1/22
Inventor 杨锁廷姚金波刘建中
Owner TIANJIN POLYTECHNIC UNIV
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