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Post finishing process for superfine fiber artificial leather

A technology of ultra-fine fiber and synthetic leather, applied in textiles and papermaking, etc., can solve the problems of easy to break, loose leather body, poor water vapor permeability, etc., to improve hygienic performance, enhance water vapor permeability, improve compactness sexual effect

Inactive Publication Date: 2005-11-23
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

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]First, add the microfiber base cloth into the drum, then add 300% water by weight of the base cloth, and treat at 25°C for 15 minutes; then add 0.3% by weight of the base cloth industrial-grade formic acid, rotate for 2 hours, and perform acid hydrolysis , add baking soda to adjust the pH to 6.5, and then control the water; add 500% water and 1% dye by weight of the base fabric, rotate at 50 ° C for 2 hours, and dye; add 0.3% by weight of the base fabric industrial-grade formic acid, rotate 120 minutes to fix the color; add 10% fish oil fatliquor and 0.3% synthetic fatliquor by weight of the base cloth, turn for 2 hours for fatliquoring; add 2.0% wattle tannin extract by weight of the base cloth, turn for 1 hour , fill the base fabric; add 0.3% industrial grade formic acid by weight of the base fabric, rotate for 120 minutes, and fix the dye on the base fabric; add 4% by weight of the base fabric and chrome powder with an alkalinity of 33%, rotate for 1 hour, and carry ou...

Embodiment 2

[0028] First, add the microfiber base cloth into the drum, then add 900% water by weight of the base cloth, and treat at 18°C ​​for 10 minutes; then add 1.5% by weight of the base cloth industrial grade formic acid, rotate for 1 hour, and perform acid hydrolysis , then add baking soda to adjust the pH value to 7.0, and then control the water; add 300% water and 4% dye by weight of the base fabric, rotate at 60°C for 1 hour, and dye; add 1.5% by weight of the base fabric industrial-grade formic acid, Turn for 30 minutes to fix the color; add 7% fish oil fatliquor and 10% synthetic fatliquor by weight of the base cloth, turn for 1 hour for fatliquoring; add 8.0% wattle tannin extract by weight of the base cloth, turn 4 hours, fill the base cloth; add industrial grade formic acid with 1.5% by weight of the base cloth, rotate for 55 minutes, and fix the dye on the base cloth; add 8% by weight of the base cloth and chrome powder with an alkalinity of 33%, rotate for 2 hours, carry o...

Embodiment 3

[0030] First, add the microfiber base cloth into the drum, then add 600% water by weight of the base cloth, and treat at 20°C for 19 minutes; then add 0.6% by weight of the base cloth industrial-grade formic acid, rotate for 2.5 hours, and perform acid hydrolysis , and then add baking soda to adjust the pH to 6.6 and then control the water; add 600% water and 2% dye by weight of the base fabric, rotate at 63°C for 2.5 hours, and dye; add 0.6% by weight of the base fabric industrial-grade formic acid, Turn for 80 minutes to fix the color; add 4% fish oil fatliquor and 8% synthetic fatliquor by weight of the base cloth, turn for 2.5 hours to fatliquoise; add 5% of the base cloth weight of wattle bark tannin extract, turn 3 hours, fill the base fabric; add industrial grade formic acid with 0.6% by weight of the base fabric, rotate for 72 minutes, and fix the dye on the base fabric; add 5% by weight of the base fabric and 33% chrome powder, rotate for 3.4 hours, carry out chromium ...

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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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 the processing technology of synthetic leather and leather, in particular to a post-finishing method of superfine fiber synthetic leather. Background technique [0002] my country's polyurethane industry developed in the early 1960s, with a short production history and a slow development speed. Affected by this, my country's polyurethane synthetic leather industry also started relatively late. The domestic artificial leather market has long been dominated by PVC artificial leather. In 1983, Yantai Synthetic Leather Factory introduced Japanese polyurethane synthetic leather production technology, built and put into operation 3 million M 2 Polyurethane synthetic leather device. In 1986, Changzhou Synthetic Chemical General Factory imported a production line with an annual output of 5000t polyurethane slurry from Italy. In 1995, there were 15 polyurethane slurry production plants nationwide, with an annual production capacity of...

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 Patents(China)
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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