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Method for improving volume density of viscose felt

A viscose fiber and bulk density technology, which is applied in the field of textile processing, can solve the problems of reduced fiber cohesion, small fiber volume, and increased number of needle punches, and achieve the effect of increased interlayer strength and enhanced riveting effect

Inactive Publication Date: 2018-01-12
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that in the process of forming viscose fiber felt by needle punching, since the viscose fiber is not twisted or crimped, the cohesion force between the fibers is reduced. The number of needle punches required for large felt bodies needs to be increased

Method used

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  • Method for improving volume density of viscose felt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] When the viscose fiber web after opening, carding and laying passes through the upper surface of the needle punching table at a conveying speed of 10m / min, the fluffy viscose will be treated under the condition that the negative pressure generated by the vacuum pump is 0.1MPa. The fiber web is subjected to negative pressure adsorption, and the viscose fiber web after adsorption shrinks in the negative pressure running direction, and the needles of the upper needling plate above the acupuncture table perform acupuncture on the viscose fiber web after adsorption at a frequency of 1000 times / min. , the needling density is 5 times / cm 2 . The viscose fiber mat after negative pressure needle punching was cut and weighed.

Embodiment 2

[0010] When the viscose fiber web after opening, carding and laying passes through the upper surface of the needling table at a conveying speed of 15m / min, under the condition that the negative pressure generated by the centrifugal fan is 0.1MPa, the fluffy viscose The adhesive fiber web is subjected to negative pressure adsorption, and the adsorbed viscose fiber web shrinks in the direction of negative pressure operation. Puncture, the needling density is 10 times / cm 2 . The viscose fiber mat after negative pressure needle punching was cut and weighed.

Embodiment 3

[0012] When the viscose fiber web after opening, carding and laying passes through the upper surface of the needle punching table at a conveying speed of 20m / min, the fluffy viscose will be treated under the condition of a negative pressure of 0.1MPa generated by a vacuum pump. The fiber web is subjected to negative pressure adsorption, and the viscose fiber web after adsorption shrinks in the negative pressure running direction, and the needles of the upper needling plate above the acupuncture table perform acupuncture on the viscose fiber web after adsorption at a frequency of 2000 times / min. , the needling density is 20 punches / cm 2 . The viscose fiber mat after negative pressure needle punching was cut and weighed.

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Abstract

The invention relates to a method for improving volume density of a viscose felt, and belongs to the technical field of a textile processing. The method includes steps of performing negative pressureabsorption on a fluffy viscose screen under a negative pressure condition when the viscose screen after loosening carding and lapping passes through the upper surface of a needling platform in a viscose felt needling technology; absorbing the viscose screen to contract towards the negative pressure running direction; when the viscose screen is contracted, needling the viscose screen after being contracted by a needle of an upper needle plate at the upper part of the needle platform. On the basis of the same needling density, conveying speed of the viscose and the needling frequency, the negative pressure makes the viscose screen realize the compact at first and then needle to make the connection of the viscose tight; the viscose volume in the unit volume is increased, and the volume density of the viscose felt after being needled is improved.

Description

technical field [0001] The invention relates to a method for increasing the bulk density of viscose fiber felt, which belongs to the technical field of textile processing. Background technique [0002] Viscose fiber felt is cool, breathable, antistatic, anti-ultraviolet, colorful, and has good color fastness. Viscose fiber containing various flame retardants can be used in high-temperature and fire-resistant industrial sectors. Viscose fiber can also be made into hemostatic fiber after treatment, hollow viscose fiber has dialysis effect and can be used as artificial kidney, viscose filament containing barium is suitable for medical suture. In addition, the carbon fiber and graphite fiber obtained by viscose fiber treatment have high strength and high modulus, and composite materials made of epoxy resin can be used as ablation materials for space technology; blended by viscose and sodium silicate The raw silk, the ceramic fiber made after treatment is used as the reinforcing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4258D04H1/46D04H1/48
Inventor 曹根阳潘恒刘欣夏治刚徐卫林
Owner WUHAN TEXTILE UNIV
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