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Method for relieving strength loss of cotton fiber felt in needling process

A cotton fiber and acupuncture technology, applied in the field of textile processing, can solve the problems of low efficiency and large cotton fiber damage, and achieve the effects of reducing damage, increasing interlayer strength, and strengthening riveting

Inactive Publication Date: 2018-01-09
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that in the process of forming cotton fiber felt by needle punching, because the cotton fibers are relatively fluffy and dense in the process of cotton fiber web needle punching, the efficiency of compaction is low, and the increase in the number of needle punches leads to the impact of needle punching on cotton fibers. Larger damage

Method used

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  • Method for relieving strength loss of cotton fiber felt in needling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] After the cotton fiber has been opened, carded and laid, the cotton fiber web passes through the upper surface of the acupuncture table at a conveying speed of 5m / min, and the fluffy cotton fiber web is treated under the condition of a negative pressure of 0.1MPa generated by a vacuum pump. Negative pressure adsorption, the adsorbed cotton fiber web shrinks in the negative pressure running direction, the needles on the upper needling board above the acupuncture table perform acupuncture on the adsorbed cotton fiber web at a frequency of 1000 times / min, the upper needling board The needle density is 1000 pieces / m. The cotton fiber mat after negative pressure needle punching was cut and weighed.

Embodiment 2

[0010] When the cotton fiber web after the cotton fiber has been opened, carded and laid passes through the upper surface of the needling table at a conveying speed of 10m / min, the fluffy cotton fiber web is treated under the condition that the negative pressure generated by the centrifugal fan is 0.1MPa. Negative pressure adsorption is performed, and the adsorbed cotton fiber web shrinks in the direction of negative pressure operation. The needles on the upper needling plate above the acupuncture table perform acupuncture on the adsorbed cotton fiber web at a frequency of 1500 times / min. The needle density of the board is 1200 pieces / m. The cotton fiber mat after negative pressure needle punching was cut and weighed.

Embodiment 3

[0012] After the cotton fiber has been opened, carded and laid, the cotton fiber web passes through the upper surface of the acupuncture table at a conveying speed of 15m / min, and the fluffy cotton fiber web is processed under the condition of a negative pressure of 0.1MPa generated by a vacuum pump. Negative pressure adsorption, the cotton fiber web after adsorption shrinks in the direction of negative pressure operation, the needles on the upper needling board above the acupuncture table perform acupuncture on the adsorbed cotton fiber web at a frequency of 2000 times / min, the upper needling board The needle density is 1500 pieces / m. The cotton fiber mat after negative pressure needle punching was cut and weighed.

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Abstract

The invention relates to a method for relieving strength loss of a cotton fiber felt in a needling process, and belongs to the technical field of textile processing. According to the method, when a cotton fiber net subjected to opening and carding and is laid passes through the upper surface of a needling table in a cotton fiber felt needling process, the fluffy cotton fiber net is adsorbed underthe negative pressure, the adsorbed cotton fiber net shrinks towards the negative pressure running direction, and while the cotton fiber net shrinks, needles of a needling plate positioned above the needling table needle the shrunk cotton fiber net. The fluffy cotton fiber net is adsorbed and shrunk under the negative pressure to enable the cotton fiber net to be compact, the needling frequency isreduced, damage of the needles to fibers is relieved, strength loss is relieved, therefore, the needling effect of the cotton fiber felt and the quality of a finished product are improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a method for reducing strength loss during needle punching of cotton fiber felt, belonging to the technical field of textile processing. Background technique [0002] Cotton fiber felt is soft, fluffy and breathable because of its products. It is widely used in clothing, clothing, cushions, filling materials for household items, interior wall decoration, and can also be used as a material for insoles. The production process of conventional cotton fiber felt is to open and card the cotton fiber before laying the net, and use a barbed needle to penetrate several layers of cotton fiber nets for needle punching. The fiber bundles pass through the cotton fiber web, and the fiber bundles run through between different layers of cotton fiber webs. On the one hand, the interlayer strength between the cotton fiber webs is increased; on the other hand, the cotton fibers in each layer of fiber webs are changed from a fluffy state. It cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/46
Inventor 曹根阳潘恒徐卫林刘欣夏治刚
Owner WUHAN TEXTILE UNIV