Natural-fiber artificial leather and manufacturing method thereof

A technology for simulating leather and natural fibers, applied in textiles and papermaking, etc., can solve the problems of increasing the content of organic chemical components in artificial leather, reducing product environmental protection, and high production and processing costs, shortening dyeing time, reducing water energy consumption, and reducing Effects of wastewater discharge and water consumption

Active Publication Date: 2019-12-20
辛集市宝隆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the processing and manufacturing of the above-mentioned traditional artificial leather, the raw materials are woven fabric substrates or non-woven fabric substrates, both of which are generally chemical fiber fabrics, which are low in environmental protection during production and processing; the chemical binders used to enhance the bonding strength of fibers, It will further increase the content of organic chemical components in artificial leather and reduce the environmental protection of the product; when dip-dyeing the substrate, choose a tank dyeing or slot dyeing that is compatible with the textile substrate or non-woven substrate, and the dyeing time Long, generally the overall dyeing process takes at least about 5 hours, and each ton of product generally needs to consume no less than 8 tons of water, which takes a long time and consumes a lot of water, and the production and processing costs are high

Method used

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  • Natural-fiber artificial leather and manufacturing method thereof
  • Natural-fiber artificial leather and manufacturing method thereof
  • Natural-fiber artificial leather and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A natural fiber imitation leather, such as figure 1 As shown, it includes needle-punched nonwoven base layer 1, cover layer 2, first resin layer 3, second resin layer 4 and oil wax layer 5 from bottom to top. Needle-punched non-woven base layer 1 is made of natural fibers through needles. It is formed by interweaving by needle punching method, and the inside of the needle punching method nonwoven base layer 1 is a fiber network structure. The natural fiber in the present invention can select plant fiber for use, as pineapple leaf, banana leaf, tencel fiber etc., also can select animal hair fiber for use, such as wool fiber, cow hair fiber etc., fiber length needs to reach not less than 2cm, make acupuncture machine The processed fiber network structure is more compact and strong. The interior of the needle-punched non-woven base layer 1 is dyed with chemical dyes through the microwave dyeing method, so that the interior has the same color as the desired leather product...

Embodiment 2

[0052] The natural fiber artificial leather of embodiment 2 is the same as the layer structure and composition thereof of embodiment 1, the difference is that the manufacturing process is different, specifically:

[0053] (1) Production of needle-punched nonwoven substrate

[0054] Manufactured to form a thickness of 1.5mm, 400g / m 2 The needle-punched nonwoven base layer, all the other are identical with the step (1) of embodiment 1;

[0055] (2) Internal dyeing treatment of needle-punched nonwoven substrate

[0056] The transmission speed of the needle-punched non-woven base layer is 3m / min, the microwave power is 11kw, the drying temperature of microwave dyeing is 60°C, and the overall duration is 15min; the dyeing agent for microwave penetration dyeing includes the following components by weight: dyestuff : leather penetrating agent: water is 1: 0.05: 10, and water temperature is controlled at 37 ℃; Dyestuff then is according to the needs of actual production and processi...

Embodiment 3

[0060] The layer structure and composition thereof of the natural fiber imitation leather of embodiment 3 are identical with embodiment 1, and difference is that manufacturing process is different, specifically:

[0061] (1) Production of needle-punched nonwoven substrate

[0062] Manufactured to form a thickness of 1.8mm, 600g / m 3 The needle-punched nonwoven base layer, all the other are identical with the step (1) of embodiment 1;

[0063] (2) Internal dyeing treatment of needle-punched nonwoven substrate

[0064] The transmission speed of the needle-punched non-woven substrate is 3m / min, the microwave power is 15kw, the drying temperature of microwave dyeing is 70°C, and the overall dyeing time is 14min; the dyeing agent for microwave penetration dyeing includes the following components by weight: Dye: leather penetrating agent: water is 1: 0.05: 10, and water temperature is controlled at 40 ℃; Dyestuff then is according to the needs of actual production and processing, s...

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Abstract

The invention relates to the technical field of leather processing, in particular to natural-fiber artificial leather and a manufacturing method thereof. The natural-fiber artificial leather is obtained through the following processing steps: opening, carding and dry-process needling treatment is sequentially conducted on natural fibers to obtain a needled non-woven base layer with a fiber net structure inside; by adopting a microwave dyeing method, the needled non-woven base layer is dyed with a chemical dye in a permeating way to obtain gray artificial leather; the upper surface layer of thegray artificial leather is sequentially coated with a bottom sealing layer, a first resin layer, a second resin layer and an oil wax layer in a rolling way, and polishing is carried out to obtain thenatural fiber artificial leather. By adopting the processing technology, energy is saved, emission is reduced, the method is friendly to the environment, the processed artificial leather has excellent washing fading performance and frictional fading performance and good dyeing firmness, the yellowing resistance and aging resistance reach the standard, and various mechanical properties such as tensile strength, tearing strength and elongation are all higher than the index requirements.

Description

technical field [0001] The invention relates to the technical field of leather processing, in particular to a natural fiber imitation leather and a manufacturing method thereof. Background technique [0002] Traditional leather is denatured and non-perishable animal skin obtained by physical and chemical processing such as depilation and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space. There is a special grain layer on the surface, which has natural grain and luster, and feels comfortable. It is widely used in sofas, bags, car interiors, ball games, etc. field. In order to meet people's demand for different leather products and avoid criminals from hunting certain animals in large quantities, more and more artificial leather or imitation leather have emerged as the times require. [0003] Artificial leather is mostly made of different formulations such as PVC or PU on a woven or non-woven fabric substrate through foaming or f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/18D06N3/14D06N3/04D06N3/00
CPCD06N3/183D06N3/144D06N3/042D06N3/0011D06N3/0015D06N2209/08D06N2209/108D06N2209/16D06N3/0077D06N2209/0823D06N2209/1692D06N2209/103D06N2211/28
Inventor 董贺翔
Owner 辛集市宝隆科技有限公司
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