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Production method for split-layer oil wax waterproof leather

A production method and technology of split leather, applied in leather softening, leather surface treatment, leather surface mechanical treatment, etc., can solve the problems of poor waterproof effect of leather materials, hard to disappear, poor wet rub resistance, etc., and achieve excellent water resistance and wet rub resistance, strong oily waxy feeling and color difference, and the effect of enhancing the antique effect

Active Publication Date: 2017-07-18
漳州香洲皮革有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Oil wax leather is one of the more high-end leather materials at present. The existing oil wax leather is mostly made of top layer cowhide after dyeing, oiling and waxing. It has excellent softness, elasticity and water resistance, and the price is relatively expensive. , so researchers consider making oil wax leather with lower price two-layer cowhide, but there are still many shortcomings in the existing oil wax leather made of cow split leather blank: first, the waterproof effect of the leather material is poor, Wet rub resistance is not good; second, the sense of oily wax and color difference is insufficient, and the charm of oily waxy leather cannot be reflected; thirdly, once there is a scratch on the surface of the leather material, it is difficult to disappear, and the tear strength of the leather material is low

Method used

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  • Production method for split-layer oil wax waterproof leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The production method of two-layer oil wax waterproof leather comprises the steps:

[0028] Take the cow split hide and dry it;

[0029] Grinding: Take the dried two-layer leather, use 180# and 220# to grind the bottom surface of the leather, use 280# and 180 # Grind the surface of the skin with gravel, and sweep the skin ash after grinding;

[0030] One-time softening: put the leather base after grinding into the softening drum and soften for 60 minutes;

[0031] Spraying: In parts by mass, add 30 parts of acrylic resin MELIO RESIN A-776 to 180 parts of water, raise the temperature to 55°C, stir evenly, spray the acrylic resin slurry on the surface of the skin that has been softened once above, and spray When the acrylic resin slurry consumption is 25 grams per square meter of skin blank.

[0032] Roller oil wax: heat the oil wax until it melts, heat the roller coater to 90°C, pour the oil wax into the roller coater, set the rolling speed and blanket speed ratio to ...

Embodiment 2

[0037] The production method of two-layer oil wax waterproof leather comprises the steps:

[0038] Take the cow split hide and dry it;

[0039] Grinding: Take the dried two-layer leather, use 180# and 220# to grind the bottom surface of the leather, use 280# and 180 # Grind the surface of the skin with gravel, and sweep the skin ash after grinding;

[0040] One-time softening: put the leather base after grinding into the softening drum and soften for 55 minutes;

[0041] Spraying: In parts by mass, add 20 parts of acrylic resin MELIO RESIN A-776 to 150 parts of water, raise the temperature to 50°C, stir evenly, spray the acrylic resin slurry on the surface of the skin that has been softened once above, and spray When the acrylic resin slurry consumption is 20 grams per square meter of skin blank.

[0042] Roller oil wax: heat the oil wax until it melts, heat the roller coater to 85°C, pour the oil wax into the roller coater, set the rolling speed and blanket speed ratio to ...

Embodiment 3

[0047] The production method of two-layer oil wax waterproof leather comprises the steps:

[0048] Take the cow split hide and dry it;

[0049] Grinding: Take the dried two-layer leather, use 180# and 220# to grind the bottom surface of the leather, use 280# and 180 # Grind the surface of the skin with gravel, and sweep the skin ash after grinding;

[0050] One-time softening: put the leather base after grinding into the softening drum and soften for 50 minutes;

[0051] Spraying: In parts by mass, add 40 parts of acrylic resin MELIO RESIN A-776 to 200 parts of water, raise the temperature to 60°C, stir evenly, spray the acrylic resin slurry on the surface of the skin that has been softened once above, and spray When the acrylic resin slurry consumption is 30 grams per square meter of skin blank.

[0052]Roller oil wax: heat the oil wax until it melts, heat the roller coater to 95°C, pour the oil wax into the roller coater, set the rolling speed and blanket speed ratio to 3...

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Abstract

The invention relates to a production method for split-layer oil wax waterproof leather and belongs to the technical field of leather. The production method for the split-layer oil wax waterproof leather includes the following steps that a split-layer leather blank is taken, dried and then subjected to leather grinding, first time of milling, spraying, oil wax roll painting, roll finishing, secondary milling and feeling agent spraying, and then the split-layer oil wax waterproof leather is obtained. The split-layer oil wax waterproof leather prepared through the production method has good waterproof performance and wet rubbing resistance and meanwhile has relatively high tearing strength; in addition, the split-layer oil wax leather prepared through the production method is relatively high in oil wax sense and chromatic aberration sense, the antiquing effect of the leather is effectively improved, scratching resistance of the leather is good, and scratches can disappear by themselves once happening to the surface of a leather material; and the performance of the split-layer oil wax waterproof leather prepared through the production method can rival the performance of top layer oil wax leather.

Description

technical field [0001] The invention belongs to the technical field of leather, and in particular relates to a production method of two-layer oil wax waterproof leather. Background technique [0002] The commonly used two-layer leather base is generally formed by crushing the leftovers of the genuine leather and adding additives to re-bond them. It is slightly rougher and thicker than real leather, but still retains the properties of real leather. The most widely used split hides are cow split hides and pig split hides. [0003] Cow split leather is generally reprocessed by chemical coating or transfer film, and the transfer film leather is poor in low temperature resistance and is prone to wrinkles at low temperatures. However, the performance of the cow split leather after chemical finishing treatment will be better, and there will be no obvious defects even after embossing. With the continuous development of leather technology, due to the stable price and quality of co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C11/00C14B1/44C14B1/40C14B1/54
CPCC14B1/40C14B1/44C14B1/54C14C11/003
Inventor 许维奇
Owner 漳州香洲皮革有限公司
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