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High-performance uniform leather base fabric

A high-performance technology for leather base fabrics, applied in the field of leather base fabrics, can solve the problems of physical properties such as low breaking strength, low elongation at break, large vertical and horizontal ratios, and inability to meet high-grade leather base fabrics.

Active Publication Date: 2013-07-10
福建鑫华股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The characteristics of natural leather are isotropic, and the synthetic leather base fabric imitates the base structure of natural leather. The cloth is relatively low, and the vertical and horizontal ratio is relatively large, so it still cannot meet the requirements of high-grade leather base cloth

Method used

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  • High-performance uniform leather base fabric

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Experimental program
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Effect test

Embodiment 1

[0029] The invention relates to a high-performance uniform leather base cloth, which uses 85% by weight of regenerated polyester fiber and 15% by weight of Dahua polyester staple fiber as raw materials. Among them, the fineness of recycled polyester fiber is 2.5D, the fiber length is 51mm, the fineness of Dahua polyester staple fiber is 1.5D, and the fiber length is 51mm. The warp density of the woven fabric is 65-75 threads / in, and the weft density is 37-40 threads / in.

[0030] During production, the fiber raw materials are firstly opened and mixed, and then the fibers are fed into the carding system through the fiber feeding system, the vibrating cotton box or the pneumatic cotton box or the combination of the two boxes, and the fiber is carded into a web, and then passed through the web-laying machine. Carry out repeated overlapping to the required number of layers or gram weight of 250-270 grams per square meter. High-performance uniform leather base fabrics were prepared...

Embodiment 2

[0040] The invention relates to a high-performance uniform leather base cloth, which uses 85% regenerated polyester fiber 2.0D×51mm and 15% regenerated polyester fiber 3.0D×51mm as raw materials, and the warp density of the woven cloth is 70-75 pieces / in, the weft density is 40-45 threads / in.

[0041] During production, the fiber raw materials are firstly opened and mixed, and then the fibers are fed into the carding system through the fiber feeding system, the vibrating cotton box or the air pressure cotton box, and the fibers are carded into a web, and are repeatedly overlapped to the desired The number of layers or gram weight is 250-270 g / m2. High-performance uniform leather base fabrics were prepared by 5 needling machines and 9 needle-plate needling machines. The fiber web is preliminarily formed into a fiber mat through barbs and positive punctures.

[0042] The frequency and depth of the first needling are 550-650r / min, 12-14mm respectively, and the frequency and de...

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Abstract

The invention discloses a high-performance uniform leather base fabric which comprises a nonwoven fabric layer and a machine-woven fabric layer, wherein the machine-woven fabric layer is composited on the nonwoven fabric layer through an acupuncture process. The nonwoven fabric layer is prepared by taking 70-100 wt % of regenerated polyester fiber and 0-30 wt % of maximized polyester short-fiber as raw materials through opening and mixing, web forming through carding, web paving, and two acupunctures; the linear density of the regenerated polyester fiber is 1.5-4D, and the fiber length is 38-76mm; and the linear density of the maximized polyester short-fiber is 1.4-3D, and the fiber length is 38-51mm. The machine-woven fabric layer is prepared by using polyester silk, the warp density is 65-85 roots / in, and the weft density is 35-50 roots / in. According to the invention, by combining a characteristic that the vertical and horizontal strength ratio of a nonwoven fabric is large and the vertical and horizontal strength ratio of a machine-woven fabric is small, the prepared leather base fabric has unique styles of the two, and performances of uniform vertical and horizontal breaking strength and elongation at break, so that the ratio of the vertical and horizontal breaking strength to the elongation at break is ensured to be within 1:1.1.

Description

technical field [0001] The invention relates to the field of leather base cloth, more specifically relates to a high-performance uniform leather base cloth, which can be used to make synthetic leather, and has the ratio of vertical and horizontal breaking strength to breaking elongation within 1:1.1, and high blasting force. , smooth surface and good stiffness. Background technique [0002] In the production of synthetic leather, one of the keys to requiring synthetic leather to have a unique style and excellent performance is the choice of base fabric. The excellent performance and stability of the base fabric play an important role in the strength and stability of the final product. It requires the base fabric to have good vertical and horizontal To strength and solution permeability. [0003] At present, woven fabrics, knitted fabrics and nonwoven fabrics can meet these requirements and can be used as base fabrics. However, non-woven fabrics are arranged randomly throug...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B7/08D04H1/4382D04H1/46
Inventor 熊大平吴锐刘建政李炳林
Owner 福建鑫华股份有限公司
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