Production process of super waterproof leather

A production process and leather technology, which is applied in the field of tanning, can solve the problems of unsatisfactory waterproof effect, difficulty in reprocessing and restoration, leather durability, universal constraints of wearing suitability and use, etc.

Active Publication Date: 2017-03-08
福建省永建皮革科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, the research on cowhide two-layer leather has gradually deepened, but because ordinary leather is not water-resistant, the durability, suitability and universality of leather use are all restricted, especially when it is raining, walking on muddy roads or drinking and other dirt. When the leather shoes, clothing and other items made of cowhide spli

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A production process of super waterproof leather, comprising the following steps:

[0028] (1) material selection: take the two-layer leather blank as raw material, weigh, put the two-layer leather blank into the drum, calculate the addition of other substances with the two-layer leather blank as 100 parts by mass, and the rotating speed of the drum is 5rad / min;

[0029] (2) Backwater: Add 200 parts by weight of water at 30°C and 0.5 parts by weight of formic acid into the drum, rotate for 50 minutes, and drain;

[0030] (3) Retanning: Add 140 parts by weight of water at 30° C. and 1 part by weight of dyestuff to the double-layer leather base after backwater, and rotate for 15 minutes, then add 1 part by weight of melamine retanning agent, and continue to rotate for 20 minutes. Then add 6 parts by weight of acrylic resin tanning agent, and rotate for 20 minutes; then add 0.5 parts by weight of waterproof oil, and rotate for 20 minutes; then add 1 part by weight of chr...

Embodiment 2

[0043] A production process of super waterproof leather, comprising the following steps:

[0044](1) material selection: take the two-layer leather blank as raw material, weigh, put the two-layer leather blank into the drum, calculate the addition of other substances with the two-layer leather blank as 100 parts by mass, and the rotating speed of the drum is 8rad / min;

[0045] (2) Backwater: add 250 parts by weight of water at 35°C and 0.6 parts by weight of formic acid into the drum, rotate for 60 minutes, and drain;

[0046] (3) Retanning: Add 150 parts by weight of water at 35°C and 1.5 parts by weight of dye to the double-layer leather base after returning to water, and rotate for 25 minutes, then add 2 parts by weight of dihydroamine compounding agent, and continue to rotate 30 minutes, then add 8 parts by weight of acrylic resin tanning agent, and rotate for 20 minutes; then add 1.2 parts by weight of waterproof oil, and rotate for 20 minutes; then add 2 parts by weigh...

Embodiment 3

[0059] A production process of super waterproof leather, comprising the following steps:

[0060] (1) Material selection: take the double-layer leather blank as raw material, weigh it, put the two-layer leather blank into the drum, calculate the addition of other substances with the double-layer leather blank as 100 parts by mass, and the rotating speed of the drum is 5~ 10rad / min;

[0061] (2) Backwater: add 300 parts by weight of water at 40°C and 0.7 parts by weight of formic acid into the drum, rotate for 70 minutes, and drain;

[0062] (3) Retanning: Add 160 parts by weight of 40°C water and 2 parts by weight of dye to the double-layer leather base after backwater, and rotate for 30 minutes, then add 3 parts by weight of melamine retanning agent, and continue to rotate for 40 minutes. Then add 10 parts by weight of acrylic resin tanning agent, and rotate for 25 minutes; then add 2 parts by weight of waterproof oil, and rotate for 25 minutes; then add 3 parts by weight of...

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PUM

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Abstract

The invention discloses a production process of super waterproof leather. Backwater, retanning, neutralization, filling, dyeing, stuffing, fixing, skin layer and resin layer combination and the like are performed on two-layer leather. The process comprises a plurality of waterproof processing steps of the leather, and a skin layer and a resin layer which have good air permeability are combined with the surface of a base material of the two-layer leather, so that the texture of the leather is guaranteed, the effect of increasing the physical strength of the leather is achieved, therefore, the leather which is produced by using the process has the advantages of super waterproof performance and high air permeability, and the texture of the leather is not destroyed.

Description

technical field [0001] The invention relates to the technical field of leather making, in particular to a production process of super waterproof leather. Background technique [0002] In recent years, the research on cowhide two-layer leather has gradually deepened, but because ordinary leather is not water-resistant, the durability, suitability and universality of leather use are all restricted, especially when it is raining, walking on muddy roads or drinking and other dirt. When the leather shoes, clothing and other items made of cowhide split leather that have not been specially treated are stained, the leather products are in a very embarrassing situation, and it is difficult to reprocess and restore them as new. However, after the leather is treated with a common waterproof process, the performance of the leather such as breathability and moisture absorption is affected, and the waterproof effect is not satisfactory. As people's requirements for leather performance ar...

Claims

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Application Information

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IPC IPC(8): C14C3/08C14C3/10C14C3/22C14C3/06C14C1/04C14C3/28C14C11/00C14C15/00
CPCC14B2700/27C14C1/04C14C3/06C14C3/08C14C3/10C14C3/22C14C3/28C14C11/003C14C15/00
Inventor 陈惜治林树生陈浩
Owner 福建省永建皮革科技股份有限公司
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