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Production method of solvent resistant leather

A production method and solvent-resistant technology, applied in leather softening, leather surface treatment, leather stretching/stretching, etc., can solve problems such as leather cracks, poor performance of coatings, poor solvent resistance and aging resistance of leather, and achieve The effect of good breaking strength and elongation at break, good resistance to wet and dry rubbing, and excellent aging resistance

Inactive Publication Date: 2015-12-30
FUJIAN JINJIANG ANHAI QIUXIA LEATHER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, the use of leather has been increasing year by year, and it is widely used in shoes, clothing, bags and various daily necessities. Therefore, the performance requirements of leather are gradually increasing, not only must it have a good feel, but also have good dry and wet resistance. Rubbing performance, aging resistance and solvent resistance, etc., although with the continuous development of leather processing technology, the performance of leather has been greatly improved, but the solvent resistance and aging resistance of the existing leather are very poor, and the general The traditional treatment method is to achieve aging resistance and solvent resistance by coating the leather surface. However, due to improper coating methods and poor performance of the coating, it will still cause cracks, yellowing or even fading of the leather during use. skin phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for producing solvent-resistant leather, specifically comprising the steps of:

[0038] Step 1, vibrating and softening: prepare the skin embryo, place the skin embryo on a vibrating softener to vibrate;

[0039] Step 2, Stretching: place the vibrated leather embryo on a stretching machine for stretching, the temperature of the stretching plate is 60°C, and the stretching distance is 10cm;

[0040] Step 3, filling: put the stretched leather embryo on a roller coating machine and roll to coat the filling solution, and let it stand for 25 minutes. The filling solution includes the following raw materials in parts by mass: 300 parts of water, and the penetrating agent MelioP-4893. B (Clariant Chemical Co., Ltd.) 30 parts, 250 parts of acrylic resin, 15 parts of water-based epoxy resin emulsion, the amount of each roll coating is 20g of filling liquid per square foot of leather embryo;

[0041] Step 4, vacuuming: place the filled skin embryo on a vacuum machine to...

Embodiment 2

[0057] A method for producing solvent-resistant leather, specifically comprising the steps of:

[0058] Step 1, vibrating and softening: prepare the skin embryo, place the skin embryo on a vibrating softener to vibrate;

[0059] Step 2, Stretching: place the vibrated leather embryo on a stretching machine for stretching, the temperature of the stretching plate is 55°C, and the stretching distance is 10cm;

[0060] Step 3, filling: place the stretched leather embryo on a roller coating machine and roll to coat the filling solution, and let it stand for 20 minutes. The filling solution includes the following raw materials in parts by mass: 295 parts of water, and the penetrating agent MelioP-4893. B (Clariant Chemical Co., Ltd.) 29 parts, 248 parts of acrylic resin, 14 parts of water-based epoxy resin emulsion, the amount of each roll coating is 19g of filling liquid per square foot of leather embryo;

[0061] Step 4, vacuuming: place the filled skin embryo on a vacuum machine ...

Embodiment 3

[0077] A method for producing solvent-resistant leather, specifically comprising the steps of:

[0078] Step 1, vibrating and softening: prepare the skin embryo, place the skin embryo on a vibrating softener to vibrate;

[0079] Step 2, Stretching: place the vibrated leather embryo on a stretching machine for stretching, the temperature of the stretching plate is 65°C, and the stretching distance is 10cm;

[0080] Step 3, filling: place the stretched leather embryo on a roller coating machine and roll to coat with a filling liquid, and let it stand for 30 minutes. The filling liquid includes the following raw materials in parts by mass: 305 parts of water, and the penetrating agent MelioP-4893. B (Clariant Chemical Co., Ltd.) 31 parts, 252 parts of acrylic resin, 16 parts of water-based epoxy resin emulsion, the amount of each roll coating is 21g of filling liquid per square foot of leather embryo;

[0081] Step 4, vacuuming: place the filled skin embryo on a vacuum machine t...

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Abstract

The invention relates to a production method of solvent resistant leather and belongs to the technical field of leather. The production method of the solvent resistant leather comprises steps as follows: a leather crust is prepared and processed sequentially according to steps as follows: softening through vibration, toggling, filling, vacuum pumping, mending, leather buffing, soot blowing, spraying of an adhesive agent, primary roll coating, primary plate pressing, secondary roll coating, secondary plate pressing, spraying, primary spraying of polyurethane gloss oil, tertiary plate pressing, secondary spraying of the polyurethane gloss oil, roll finish and spraying of a feeling agent. The leather produced with the method not only has excellent solvent resistance, but also has good aging resistance.

Description

technical field [0001] The invention belongs to the technical field of leather, in particular to a method for producing solvent-resistant leather. Background technique [0002] Leather generally refers to animal fur with air permeability and flexibility prepared by tanning, tanning or other methods, and currently also refers to synthetic imitation leather. [0003] In recent years, the use of leather has been increasing year by year, and it is widely used in shoes, clothing, bags and various daily necessities. Therefore, the performance requirements of leather are gradually increasing, not only must it have a good feel, but also have good dry and wet resistance. Rubbing performance, aging resistance and solvent resistance, etc., although with the continuous development of leather processing technology, the performance of leather has been greatly improved, but the solvent resistance and aging resistance of the existing leather are very poor, and the general The traditional t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C11/00C14B1/40C14B1/26C14B1/46C14B11/00C14B1/56C14B1/50
Inventor 许贻思
Owner FUJIAN JINJIANG ANHAI QIUXIA LEATHER CO LTD
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