Preparation method and application of aqueous split leather

A two-layer leather, water-based technology, applied in textiles and papermaking, etc., can solve the problems of poor hydrolysis and aging resistance, low peel strength, and limitations, and achieve the effects of simple coating operation, improved peel strength, and safety issues

Inactive Publication Date: 2017-07-14
HUAIAN KAIYUE TECH DEV
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional two-layer leather is mainly treated with solvent-based PU resin. A large amount of organic solvents are used in the production process, which not only has safety and environmental protection problems, but also toxic and harmful substances will remain in the finished product, which will endanger the personal safety of users.
In addition, the two-layer leather products treated with solvent-based systems on the mark

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Based on regenerated leather.

[0032] Step 1: Prepare water-based resin primer slurry and paint the bottom layer

[0033] 1. Ingredients

[0034] Weigh 100 parts by mass of one-liquid water-based PU resin, 2 parts by mass of water-soluble powder, 1 part by mass of silicone hand feeling agent, 2 parts by mass of silicone wetting and leveling agent, 3 parts by mass of filler, and 1 part by mass of water-based defoamer , 0.5 parts by mass of water-based color paste, prepared as a mixed slurry for use;

[0035] 2. Roller coating:

[0036] Coating weight is 40g / m 2 , the thickness of the coating film is 4 microns, and the number of coating times is one time.

[0037] 3. Drying: Just blow dry with warm air.

[0038] Step 2: Prepare water-based resin foam layer slurry and paint the foam layer to obtain a semi-finished product

[0039] 1. Ingredients

[0040] Weigh 100 parts by mass of one-liquid water-based PU resin, 2 parts by mass of water-soluble powder, 1 part by m...

Embodiment 2

[0054] Based on split leather

[0055] Step 1: Prepare water-based resin primer slurry and paint the bottom layer

[0056] 1. Ingredients

[0057] Weigh 100 parts by mass of one-liquid water-based PU resin, 5 parts by mass of water-soluble powder, 10 parts by mass of filler, and 2 parts by mass of water-based color paste, and prepare a mixed slurry for use;

[0058] 2. Roller coating:

[0059] The coating weight is 60g / m 2 , the thickness of the coating film is 6 microns, and the number of coating times is three times. The re-coating needs to be carried out after the previous slurry is dried.

[0060] 3. Drying: Just blow dry with warm air.

[0061] Step 2: Prepare water-based resin foam layer slurry and paint the foam layer to obtain a semi-finished product

[0062] 1. Ingredients

[0063] Weigh 100 parts by mass of one-liquid water-based PU resin, 5 parts by mass of water-soluble powder, 20 parts by mass of filler, and 2 parts by mass of water-based color paste, and pr...

Embodiment 3

[0077] Based on regenerated leather.

[0078] Step 1: Prepare water-based resin primer slurry and paint the bottom layer

[0079] 1. Ingredients

[0080] Weigh 100 parts by mass of one-liquid water-based PU resin, 4 parts by mass of water-soluble powder, 1 part by mass of silicone hand feeling agent, 1 part by mass of silicone wetting and leveling agent, 6 parts by mass of filler, and 1 part by mass of water-based defoamer , 1 mass part of water-based color paste, prepared as a mixed slurry for use;

[0081] 2. Roller coating:

[0082] Coating amount is 50g / m 2 , the thickness of the coating film is 5 microns, and the number of coatings is two times. The second coating should be carried out after the previous slurry is dried.

[0083] 3. Drying: Just blow dry with warm air.

[0084] Step 2: Prepare water-based resin foam layer slurry and paint the foam layer to obtain a semi-finished product

[0085] 1. Ingredients

[0086] Weigh 100 parts by mass of one-liquid water-ba...

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 discloses a preparation method and application of an aqueous split leather. According to the preparation method, regenerated leather or split leather is taken as the base material; then aqueous slurry is applied to bottom layer coating, foam layer coating, and surface layer spraying; and finally embossing or line suction is performed to prepare the split leather. An aqueous material is used to process regenerated leather and split leather so as to produce split leather for preparing cases, sofa, and the like. The problems such as safety problems, environment protection problems, residual toxic organic solvent problems, and the like can be solved. At the same time, the peeling strength, anti-aging performance, and anti-hydrolysis performance of split leather are all greatly improved. Compared with the split leather processed by a conventional solvent coating agent, the peeling strength is increased from 2-3 kilograms to 5-7 kilograms, and the hydrolysis resistant period is prolonged from 3 years to 5-8 years.

Description

technical field [0001] The invention belongs to the field of leather manufacturing, and relates to a process method for treating split leather and regenerated leather with water-based PU resin materials to prepare film transfer leather and split leather, in particular to a preparation method for water-based split leather. Background technique [0002] Genuine leather can be divided into top layer leather and second layer leather. The top layer leather is obtained by splitting thick leather with a leather machine, and the top layer is used to make full-grain leather or repaired leather to prepare high-end products. The two-layer leather is made of two-layer leather through a series of processes such as painting or filming. Its fastness, abrasion resistance, and hydrolysis resistance are poor, and it is the cheapest type of genuine leather. However, due to its low price and its Due to its certain leather characteristics, it is widely used in various leather goods, furniture, c...

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): D06N3/18D06N3/14D06N3/00
CPCD06N3/18D06N3/0002D06N3/0045D06N3/0063D06N3/0077D06N3/0079D06N3/0088D06N3/145D06N2209/1607D06N2209/1664D06N2211/28
Inventor 李桂军倪伶俐张鹏颖金叶玲陈静王桦高晓燕
Owner HUAIAN KAIYUE TECH DEV
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