Method for manufacturing washable cow split leather

A production method, the technology of cow split leather, which is applied in the directions of leather impregnation, leather drying, leather surface mechanical treatment, etc., can solve the problems of poor color fastness to washing and dimensional stability, failure to achieve washing resistance, and high cost. , to achieve the effect of ensuring color fastness to washing, excellent washing resistance, and improving combination fastness

Active Publication Date: 2017-12-22
漳州香洲皮革有限公司
View PDF3 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And existing washable leather, mostly pigskin, goatskin, there is seldom washable cow leather, and there is no relevant report on the preparation method of washable cow split leather.
[0003] The production process of general washable leather is: smoothing → grinding → degreasing → retanning → neutralization → dyeing → fatliquoring → retanning → color fixing → grinding → degreasing → neutralization → dyeing → fatliquoring → retanning → Color fixation requires multiple degreasing, fatliquoring, retanning and dyeing processes to improve the color fastness and water-based dimensional stability of the leather, thereby endowing the leather with better water

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing washable cow split leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The method for making water-resistant cow split leather comprises the following steps: taking the cow split leather which has been processed, squeezed and evenly shaved, and then subjected to rewetting → primary washing → retanning → neutralization → secondary washing →filling→dyeing→fatliquoring→acid-fixing→washing three times→fixing→washing four times→drying→hanging to dry→vibrating and softening→rubbing leather→breaking soft, the specific steps are as follows:

[0038] Step 1, re-humidification: take the skin base that has been processed, squeezed and evenly shaved, and put it in a drum for re-humidification to obtain a re-wet leather material. The specific re-humidity is: calculated according to the mass percentage of the skin base Add 180% water, 0.5% PASTOSOL M2 degreaser, 0.3% moisture rehumidifier and 0.8% oxalic acid into the drum, adjust the pH to 3.8-4.0, and drain after running for 100 minutes, wherein the water temperature is 45°C;

[0039] Step 2, one-time w...

Embodiment 2

[0051] The method for making water-resistant cow split leather comprises the following steps: taking the cow split leather which has been processed, squeezed and evenly shaved, and then subjected to rewetting → primary washing → retanning → neutralization → secondary washing →filling→dyeing→fatliquoring→acid-fixing→washing three times→fixing→washing four times→drying→hanging to dry→vibrating and softening→rubbing leather→breaking soft, the specific steps are as follows:

[0052] Step 1, re-humidification: take the skin base that has been processed, squeezed and evenly shaved, and place it in a drum for re-wetting to obtain a re-wet leather material. The specific re-humidity is: calculated according to the mass percentage of the skin base, Add 150% water, 0.4% PASTOSOL M2 degreaser, 0.2% moisture rehumidifier and 0.7% oxalic acid into the drum, adjust the pH to 3.8-4.0, drain after running for 90 minutes, wherein the water temperature is 45°C;

[0053] Step 2, one-time washing:...

Embodiment 3

[0065] The method for making water-resistant cow split leather comprises the following steps: taking the cow split leather which has been processed, squeezed and evenly shaved, and then subjected to rewetting → primary washing → retanning → neutralization → secondary washing →filling→dyeing→fatliquoring→acid-fixing→washing three times→fixing→washing four times→drying→hanging to dry→vibrating and softening→rubbing leather→breaking soft, the specific steps are as follows:

[0066] Step 1, re-humidification: take the skin base that has been processed, squeezed and evenly shaved, and place it in a drum for re-wetting to obtain a re-wet leather material. The specific re-humidity is: calculated according to the mass percentage of the skin base, Add 200% water, 0.6% PASTOSOL M2 degreaser, 0.4% moisture rehumidifier and 0.9% oxalic acid into the drum, adjust the pH to 3.8-4.0, drain after running for 120 minutes, wherein the water temperature is 40°C;

[0067] Step 2, one-time washing...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for manufacturing washable cow split leather and belongs to the technical field of manufacture of leather. The method comprises the following steps: taking a cow split leather blank subjected to wringing and shaving, and sequentially performing re-wetting, primary washing, retanning, neutralizing, secondary washing, filling, dyeing, stuffing, acid solidification, thrice washing, fixing, quartic washing, drying, hanging and airing, vibratory softening, leather fluffing and milling. The washable cow split leather manufactured by the method has favorable washability, and is high in leather yield.

Description

technical field [0001] The invention belongs to the technical field of leather production, and in particular relates to a production method of water-resistant cow split leather. Background technique [0002] The so-called washable leather refers to a kind of leather that can still meet the standard requirements of color fastness, dimensional stability and flexibility under certain washing conditions, so washable leather is a kind of high-grade leather that is easy to maintain. And existing washable leather, mostly pigskin, goatskin, there is very little washable cowhide, and there is no relevant report of the preparation method of washable cow split leather. [0003] The production process of general washable leather is: smoothing → grinding → degreasing → retanning → neutralization → dyeing → fatliquoring → retanning → color fixing → grinding → degreasing → neutralization → dyeing → fatliquoring → retanning → Color fixation requires multiple degreasing, fatliquoring, retan...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C14C1/00C14C3/06C14C15/00C14C3/10C14C3/28C14C9/02C14B1/58C14B1/44
CPCC14B1/44C14B1/58C14C1/00C14C3/06C14C3/10C14C3/28C14C9/02C14C15/00
Inventor 许维奇
Owner 漳州香洲皮革有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap