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Method for manufacturing waterproof soft-surface leather

A production method and leather technology, which can be used in leather impregnation, leather surface treatment, small raw leather/large raw leather/leather/fur treatment, etc., can solve the problem of low waterproof performance, achieve outstanding waterproof effect, avoid wrinkle surface, leather body Plump and elastic effect

Inactive Publication Date: 2011-03-30
JIHUA 3515 LEATHER & SHOES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the painted waterproof leathers on the market are only waterproof in the static state, and the waterproof performance is not high; the dynamic waterproof leather is limited to unpainted suede or split leather, and the production method is simple, without considering the possible production during the process. Quality problems and operation conditions such as loose noodles, fried noodles, pulping, process cleaning, etc. The product is also limited by variety when used in shoemaking, and can only be applied to certain varieties such as casual shoes and sports shoes.

Method used

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  • Method for manufacturing waterproof soft-surface leather
  • Method for manufacturing waterproof soft-surface leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: the manufacture method of waterproof soft leather: comprise the following steps:

[0032] A: Waterproof treatment: ①. Squeeze the wet blue leather, shave it evenly, rewet, retan, and dye it; ②. Add 0.1% of the waterproof material baking soda and 0.1% of the weight of the leather to the leather treated in step ①. 1% polyacrylic acid derivative Jintan PA-11, when the pH value in the drum is adjusted to 4, add Jintanquor S I (Taiwan Fuying) which accounts for 8% of the weight of the leather, and after rotating for 60 minutes, add 3% of the weight of the leather Zony1 602 fluorine waterproofing agent, then add 1.2% formic acid to adjust the pH value to 2.5, wash with water, change the bath, and then use formic acid to adjust the pH value to 2.5, add 2-3 valent metal salt chromium accounting for 3% of the weight of the leather powder, rotated for 60 minutes, washed with water, drummed, squeezed and stretched, vacuum dried, re-moisturized and softened to obtain ...

Embodiment 2

[0034] Embodiment 2: the manufacture method of waterproof soft leather: comprise the following steps:

[0035]A: Waterproof treatment: ①. Squeeze the wet blue leather, shave it evenly, rewet, retan, and dye it; ②. Add 0.1% of the waterproof material baking soda and 0.1% of the weight of the leather to the leather treated in step ①. 1% polyacrylic acid derivative Jintan PA-11, when the pH value in the drum is adjusted to 4, add Jintanquor S I (Taiwan Fuying) which accounts for 8% of the weight of the leather, and after rotating for 60 minutes, add 3% of the weight of the leather Zony1 602 fluorine waterproofing agent, then add 1.2% formic acid to adjust the pH value to 2.5, wash with water, change the bath, and then use formic acid to adjust the pH value to 2.5, add 2-3 valent metal salt chromium accounting for 3% of the weight of the leather Powder, rotated for 60 minutes, washed with water, drummed, squeezed and stretched, vacuum dried, re-moisturized and softened to obtain w...

Embodiment 3

[0038] Embodiment 3: the manufacture method of waterproof soft leather: comprise the following steps:

[0039] A: Waterproof treatment: ①. Squeeze the wet blue leather, shave it evenly, rewet, retan, and dye it; ②. Add 0.2% of the waterproof material baking soda and 0.2% of the weight of the leather to the leather treated in step ①. 1.5% polyacrylic acid derivative Jintan PA-11 When the PH value in the drum is adjusted to 4, add 10% of the water-repellent fatliquoring agent Jintanquor S I, which accounts for 10% of the leather weight, and after rotating for 75 minutes, add 3% of the fluorine water-repellent agent by weight Zony1602, then add 1.3% formic acid to adjust the pH value to 2.5, wash with water, change the bath, and then use formic acid to adjust the pH value to 2.5, add metal salt chromium powder accounting for 3% of the leather weight, rotate for 75 minutes, wash with water, and drum out , Squeeze and stretch, vacuum dry, regain moisture and vibrate to make waterpr...

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Abstract

The invention relates to a method for manufacturing waterproof soft-surface leather. The method comprises the steps of waterproofing treatment and finishing treatment, wherein the waterproofing treatment is as follows: adding a waterproof material (accounting for 0.1-0.3wt% of leather) and polyacrylic acid derivatives (accounting for 1-2wt% of the leather) into a big drum to regulate the pH value to 4-6, adding waterproof fat liquor (accounting for 8-12wt% of the leather), rotating for 50-90 minutes, adding fluorine waterproofing agent (accounting for 3-4wt% of the leather), adding 1.2-1.5% formic acid to regulate the pH value to 2.5-4.5, washing with water, changing bath, regulating the pH value to 2.5-4.5 by using formic acid, adding trivalent metal salt (accounting for 3wt% of the leather), rotating for 60-90 minutes, washing with water, discharging, squeezing to remove water, spreading, carrying out vacuum-drying, remoistening, and vibrating to soften the leather, thereby obtaining the waterproof leather. The leather manufactured by the method of the invention has the advantages of excellent dynamic waterproofing property, high-temperature yellowing resistance and light resistance, has physical and chemical indices and appearance properties of common vamp leather. The leather is the main material for shoemaking enterprises, especially for novel battle boots for People's Liberation Army and People's Armed Police.

Description

technical field [0001] The invention relates to a method for making leather, in particular to a method for making waterproof yellow cow soft leather. Background technique [0002] At present, the common cattle leather products are generally waterproofed for a short time by applying wax or water repellent on the surface, and the leather treated in this way is polished and painted on the surface. According to different test methods, leather waterproofing is divided into dynamic waterproofing and static waterproofing. Dynamic waterproofing only requires surface waterproofing, while dynamic waterproofing requires imitating the state of the upper during walking and testing the number of times the leather is bent in water, which requires high waterproofing. At present, most of the painted waterproof leathers on the market are only waterproof in the static state, and the waterproof performance is not high; the dynamic waterproof leather is limited to unpainted suede or split leath...

Claims

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Application Information

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IPC IPC(8): C14C11/00C14C9/02C14C9/00
Inventor 朱自军
Owner JIHUA 3515 LEATHER & SHOES
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