How to make waterproof skin

A production method and water-repellent technology, applied in the field of leather, can solve problems such as unfavorable long-term use, complicated coating preparation methods, and reduced waterproof performance of leather, so as to improve density and water-repellent performance, improve adsorption and cohesion performance, and improve The effect of water resistance

Active Publication Date: 2020-08-21
漳州香洲皮革有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The Chinese invention patent application with the application number 201611093016.7 discloses a special coating for high waterproof leather and its preparation method. By coating the prepared special coating for high waterproof leather on the surface of the leather, the leather has waterproof performance, and its coating The preparation method is complicated. When the coating on the leather surface falls off, the waterproof performance of the leather will be greatly reduced, which is not conducive to long-term use.

Method used

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  • How to make waterproof skin

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Effect test

Embodiment 1

[0036] The manufacturing method of water-repellent skin comprises the following steps:

[0037] Step 1. Moisture degreasing:

[0038] The pretreated leather is placed in the drum for degreasing treatment to obtain the degreased leather; the step 1 rewetting and degreasing treatment is specifically as follows: add 120% of water accounting for the mass percentage of the pretreated leather in the drum, Polyethylene glycol ether 8%, polyaluminum chloride 5%, after the drum runs for 150 minutes, the drum is drained and washed once with water, wherein the water temperature is 45°C.

[0039] Step two, retanning:

[0040] The degreased leather material obtained in step 1 is subjected to retanning treatment to obtain retanned leather material; the retanning treatment in said step 2 is specifically as follows: add 100% of water, C5 petroleum Resin 6%, drum after 30min, then add sodium formate 2.5%, chromium trioxide 3%, drum operation 120min, then carry out once draining, then add wat...

Embodiment 2

[0055] The manufacturing method of water-repellent skin comprises the following steps:

[0056] Step 1. Moisture degreasing:

[0057] The leather is placed in the drum for degreasing treatment to obtain the degreasing leather; the step 1 rewetting and degreasing treatment is specifically as follows: add 125% of water accounting for the mass percentage of the pretreated leather in the drum, polyethylene Glycol ether 9%, polyaluminum chloride 6%, after the drum runs for 155 minutes, the drum is drained and washed once with water, wherein the water temperature is 45°C.

[0058] Step two, retanning:

[0059] The degreased leather material obtained in step 1 is retanned to obtain retanned leather material; the retanned leather material in said step 2 is specifically as follows: add 105% of water accounting for the mass percentage of the pretreated leather material in the drum, C5 petroleum Resin 7%, drum after 35min, then add sodium formate 2.5% of the mass percentage of the pret...

Embodiment 3

[0074] The manufacturing method of water-repellent skin comprises the following steps:

[0075] Step 1. Moisture degreasing:

[0076] The leather is placed in the drum for degreasing treatment to obtain the degreasing leather; the step 1 rewetting degreasing treatment is specifically as follows: add 130% of water accounting for the mass percentage of the pretreated leather in the drum, polyethylene Glycol ether 11%, polyaluminum chloride 7%, after the drum runs for 160 minutes, the drum is drained and washed once with water, wherein the water temperature is 50°C.

[0077] Step two, retanning:

[0078] The degreased leather obtained in step 1 is subjected to retanning treatment to obtain retanned leather; the retanning treatment in step 2 is specifically as follows: add 110% of water, C5 petroleum Resin 8%, drum after 40min, then add sodium formate 3.0% of the mass percentage of the pretreated leather material, chromium trioxide 4%, drum operation 130min, then perform a drain...

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Abstract

The invention discloses a preparation method of water-resistant leather, and belongs to the technical field of leather. The preparation method of water-resistant leather comprises the following stepsof rewetting and degreasing, retanning, neutralizing, filling, dyeing, solid acid treatment and post-treatment. The preparation method of the water-resistant leather has the advantages of being suitable for different leather materials, and producing the water-resistant leather with high strength and strong bending resistance.

Description

technical field [0001] The invention belongs to the technical field of leather, in particular to a method for making water-repellent leather. Background technique [0002] With the development of society, people's living standards are getting higher and higher, and the styles and materials of daily necessities are varied. More and more people like to travel, and many travel enthusiasts like to go camping in the mountains, jungles, seaside or other places suitable for camping, and it is often time to show their hands-on ability during camping activities. Therefore, it is necessary to Many tools and daily necessities are used, and leather products have always been one of the necessary items for people because of their strong service life and anti-cut characteristics. In life, leather products are not only used in camping, leather products can be seen everywhere in the streets and alleys. For the south with more rainy weather, more waterproof items are needed. Therefore, tradi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C1/08C14C3/06C14C3/08C14C3/22C14C9/00D06P1/645D06P1/651D06P3/32
CPCC14C1/08C14C3/06C14C3/08C14C3/22C14C9/00D06P1/645D06P1/65106D06P3/32
Inventor 许维奇
Owner 漳州香洲皮革有限公司
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