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Post finishing process for superfine fiber artificial leather

A technology of superfine fiber and synthetic leather, which is applied in the field of synthetic leather and leather processing technology, can solve the problems of loose leather body, easy to break, poor water vapor permeability, etc., to enhance water vapor permeability, improve hygiene performance, The effect of improving firmness

Inactive Publication Date: 2004-12-08
SHAANXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is still not possible to produce a product comparable to natural leather
Microfiber synthetic leather has a hollow body, easy to break, poor elasticity and water vapor permeability, lacks the texture of natural leather, and the base fabric is not easy to color, easy to fade after washing, and the coating layer has a strong plastic feel and hand feel. Difference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]First add the microfiber base cloth into the drum, then add 300% of the weight of the base cloth in water, and treat it at 25°C for 15 minutes; then add 0.3% of the weight of the base cloth in industrial grade formic acid, rotate for 2 hours, and carry out acid hydrolysis , add baking soda to adjust the pH value to 6.5 and then control the water; add 500% water and 1% dye by weight of the base cloth, and rotate it for 2 hours at 50°C for dyeing; add 0.3% industrial grade formic acid by weight of the base cloth, rotate 120 minutes, carry out color fixation; add 10% fish oil fatliquor and 0.3% synthetic fatliquor by weight of the base cloth, rotate for 2 hours for fatliquoring; add wattle extract by weight of 2.0% by weight of the base cloth, rotate for 1 hour , fill the base cloth; add 0.3% of the weight of the base cloth for industrial grade formic acid, rotate for 120 minutes, fix the dye on the base cloth; add 4% of the base cloth weight of chrome powder with an alkalin...

Embodiment 2

[0028] First add the microfiber base cloth into the drum, then add water with 900% weight of the base cloth, and treat at 18°C ​​for 10 minutes; then add industrial-grade formic acid with 1.5% weight of the base cloth, rotate for 1 hour, and carry out acid hydrolysis , then add baking soda to adjust the pH value to 7.0 and then control the water; add 300% water and 4% dyestuff by weight of the base cloth, and rotate at 60°C for 1 hour to dye; add 1.5% industrial grade formic acid by weight of the base cloth, Rotate for 30 minutes to fix the color; add 7% fish oil fatliquoring agent and 10% synthetic fatliquoring agent by weight of the base cloth, and rotate for 1 hour to carry out fatliquoring; Add 1.5% industrial-grade formic acid by weight of the base cloth, and rotate for 55 minutes to fix the dye on the base cloth; add 8% by weight of the base cloth to chromium powder with an alkalinity of 33%, rotate for 2 hours, and carry out chrome Tanning; add 3.0% of the weight of the...

Embodiment 3

[0030] First add the microfiber base cloth into the drum, then add 600% of the weight of the base cloth in water, and treat it at 20°C for 19 minutes; then add 0.6% of the weight of the base cloth in industrial grade formic acid, rotate for 2.5 hours, and carry out acid hydrolysis , then add baking soda to adjust the pH value to 6.6 and then control the water; add 600% water and 2% dyestuff by weight of the base cloth, and rotate at 63°C for 2.5 hours to dye; add 0.6% industrial grade formic acid by weight of the base cloth, Rotate for 80 minutes to fix the color; add 4% fish oil fatliquoring agent and 8% synthetic fatliquoring agent of base cloth weight, and rotate for 2.5 hours to carry out fatliquoring; Add 0.6% industrial grade formic acid by weight of the base cloth and rotate for 72 minutes to fix the dye on the base cloth; add 5% by weight of the base cloth to chrome powder with an alkalinity of 33% and rotate for 3.4 hours to carry out chrome Tanning; add industrial gr...

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Abstract

A post finishing process for superfine fiber artificial leather, i.e., chemically finishing and modifying fabric back material, is carried out by wet and dry finishing substrate, middle layer coating, and spraying a shining layer with appearance of natural leather for automobile seats, sofas and shoes. The artificial leather is like natural leather in elasticity, plumpness softness and appearance, neither Cr containing chemicals nor azo pigment nor pentachlorophenol nor free formaldehyde in production, i.e., an ecologic leather production.

Description

technical field [0001] The invention relates to synthetic leather and leather processing techniques, in particular to a post-finishing method for superfine fiber synthetic leather. Background technique [0002] my country's polyurethane industry was developed in the early 1960s, with a short production history and a slow development speed. Affected by it, my country's polyurethane synthetic leather industry started relatively late. The domestic artificial leather market has been dominated by PVC artificial leather for a long time. In 1983, Yantai Synthetic Leather Factory introduced Japanese polyurethane synthetic leather production technology, and built and put into production 3 million M 2 Polyurethane synthetic leather unit. In 1986, Changzhou Synthetic Chemical General Factory imported a production line with an annual output of 5,000 tons of polyurethane slurry from Italy. In the 1990s, various regions in China introduced Taiwan to produce multiple sets of polyurethane ...

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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IPC IPC(8): D06N3/18
Inventor 张晓镭牛建民马兴元曲建波孙静俞从正
Owner SHAANXI UNIV OF SCI & TECH
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