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A preparation method of needle-punched regenerated leather for automotive interior skin

A technology for automotive interiors and regenerated leather, which is applied in the fields of final product manufacturing, sustainable manufacturing/processing, and textile/flexible product manufacturing. Excellent, enhanced texture, optimized raw material ratio and production process effects

Active Publication Date: 2018-05-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: in the case, carding is used to form a web, and the animal skin fibers obtained by stripping have small specific gravity, short length and large discreteness, and the fibers are not easy to cohere. It is difficult to form a net uniformly; polypropylene fibers are used as heat-cured fibers. During the heat-melting process, this type of low-melting-point homogeneous synthetic fiber will shrink into tiny spheres under the action of surface tension, which greatly reduces the bonding effect. And when the content reaches 30%, the elasticity of the regenerated leather will be greatly reduced, losing the feel of genuine leather

Method used

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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  • A preparation method of needle-punched regenerated leather for automotive interior skin
  • A preparation method of needle-punched regenerated leather for automotive interior skin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Prepare kraft fiber and 4080 fiber, accurately weigh 60Kg and 12Kg respectively, mix them and send them to the opener for rough opening and fine opening respectively.

[0044] (2) Feed mixed fibers for air-forming. A 4080 fiber mat with a thickness of 50 μm is pre-laid on the output curtain, and then cross-folded and laid on the fiber mat. Divide the one-way trip of the net-laying trolley into five sections, the length ratio is 1:2:4:2:1, and the corresponding speed ratio of the net-laying trolley is 1.12:1.06:1:1.06:1.12.

[0045] (3) if figure 1 As shown in 112, pre-acupuncture is carried out on the laid fiber web, the needle density is about 4000 pieces / m, the needle frequency is 500 punches / min, and the needle depth is 12mm. In order to fully reinforce the fiber mesh, the figure 1 In the position of 113 in the middle, 3 to 4 double-plate lower stab machines are used. The first acupuncture density is 350 pricks / cm 2 , the needling depth is 9mm; the second ne...

Embodiment 2

[0050] (1) Prepare the kraft fiber and N720 fiber, respectively accurately weigh 80kg and 12kg, mix them and send them to the opener for rough opening and fine opening respectively.

[0051] (2) Feed mixed fibers for air-forming. A 4080 fiber mat with a thickness of 100 μm is pre-laid on the output curtain, and then cross-folded and laid on the fiber mat. Divide the one-way trip of the net-laying trolley into five sections, the length ratio is 1:2:4:2:1, and the corresponding speed ratio of the net-laying trolley is 1.12:1.06:1:1.06:1.12.

[0052] (3) if figure 1 As shown in 112, pre-acupuncture is carried out on the laid fiber web, the needle density is about 3000 pieces / m, the needle frequency is 600 punches / min, and the needle depth is 9mm. In order to fully reinforce the fiber mesh, the figure 1 In the position of 113 in the middle, 3 to 4 double-plate lower stab machines are used. The first acupuncture density is 400 pricks / cm 2 , the needling depth is 9mm; the secon...

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Abstract

The invention provides a preparation method for needle-punched regenerated leather used as surface leather for automobile interior. The preparation method comprises the following concrete steps: (1) opening and mixing of fibers; (2) net formation; (3) net laying; (4) reinforcing through needle-punching; (5) drying and shaping; and (6) vacuum forming. In the beginning of the design of the needle-punched regenerated leather, requirements of the automobile interior surface leather on the molding performance and mechanical properties of materials and industrial standards are taken into consideration, and raw material proportioning and production process are reasonably optimized, so cooperation among the designing, preparation and molding of a composite material is realized. Compared with traditional polyvinyl chloride and polyurethane automobile interior surface leather, the automobile interior surface leather prepared in the invention has the advantages of environmental protection, no odor, excellent elasticity, moderate strength, comfortable handle, high cost performance, etc., and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of automobile interior decoration, and in particular relates to a preparation method of needle-punched regenerated leather used for automobile interior decoration epidermis. Background technique [0002] With the rise of social awareness of environmental protection, many scientific research institutes and enterprises have begun to try to reuse the scraps and recycled waste leather in the tanning industry, that is, to obtain collagen fibers or regenerated protein fibers by dry or wet processes, combined with textile technology or non-woven technology to prepare various types of textile fabrics or recycled leather. Taking cowhide scraps as an example, because it is difficult to directly make finished products, cowhide fibers are basically obtained by mechanical crushing, and then combined with spraying glue or adding low-melting point hot-melt adhesive fibers to obtain materials that do not require deformation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14D04H1/46D04H1/70D01D5/34
CPCY02P70/62
Inventor 贾玉玺周勇徐永正赵亚如智杰颖
Owner SHANDONG UNIV
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