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Manufacturing technology for waterproof long fur

A production process and fur technology, which is applied in the production process of waterproof long fur, can solve the problems of poor waterproof performance, poor wear resistance and strength as compared with the top layer leather and the second layer leather, so as to achieve enhanced softness, cleanability, etc. Good effect, the effect of increasing softness

Active Publication Date: 2017-09-29
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

After a long time of use, the second layer of leather will be tormented and even broken. It still maintains the characteristics of leather, but its durability and strength are not as good as the first layer of leather, and its waterproof performance is also relatively poor.

Method used

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  • Manufacturing technology for waterproof long fur

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A manufacturing process of waterproof long fur, comprising the following steps:

[0030] (1) Backwater: Place the two-layer long fur material in the drum for backwater to obtain backwater leather; wherein, the backwater process is as follows: first add 190% water by weight of the leather, 0.3 % degreasing agent and 0.4% rehumidifying agent, the temperature of water is 50°C, after turning for 65 minutes, add 1.4% ammonium sulfate and 0.9% deliming agent by weight of leather, and then add 1.4% ammonium sulfate by weight of leather after turning for 95 minutes 0.9% acid softening enzyme, 0.5% oxalic acid and 0.2% formic acid, after the final rotation for 65 minutes, the backwater is completed, the drum is drained, and then water is added for washing and drained twice;

[0031] (2) Retanning: carry out retanning treatment to backwater leather, obtain retanning leather; Wherein, the retanning process is as follows: first add 90% water and 0.2% formic acid by leather weight in ...

Embodiment 2

[0042] A manufacturing process of waterproof long fur, comprising the following steps:

[0043] (1) Backwater: Place the two-layer long fur material in the drum for backwater to obtain backwater leather; wherein, the backwater process is as follows: first add 200% water by leather weight, 0.4 % degreasing agent and 0.5% rehumidifying agent, the temperature of the water is 45°C, after turning for 60 minutes, add 1.5% ammonium sulfate and 1% deliming agent according to the weight of the leather, and then add 1.5% ammonium sulfate according to the weight of the leather after turning for 90 minutes. 1% acid softening enzyme, 0.6% oxalic acid and 0.3% formic acid, after the final rotation for 60 minutes, the backwater is completed, the drum is drained, and then water is added for washing and drained twice;

[0044] (2) Retanning: Carry out retanning treatment to backwater leather to obtain retanned leather; wherein, the retanning process is as follows: first add 100% water and 0.3%...

Embodiment 3

[0055] A manufacturing process of waterproof long fur, comprising the following steps:

[0056] (1) Backwater: Place the two-layer long fur material in the drum for backwater to obtain backwater leather; wherein, the backwater process is as follows: first add 210% water by leather weight, 0.5 % degreasing agent and 0.6% rehumidifying agent, the temperature of water is 45-48°C, add 1.6% ammonium sulfate and 1.1% deliming agent according to the weight of the leather after turning for 55 minutes, and then add according to the weight of the leather after turning for 85 minutes 1.1% acid softening enzyme, 0.7% oxalic acid and 0.4% formic acid, after the final rotation for 55 minutes, the backwater is completed, the drum is drained, and then water is added to wash and drained twice;

[0057] (2) Retanning: Carry out retanning treatment to backwater leather, obtain retanned leather; Wherein, the retanning process is as follows: first add 110% water and 0.4% formic acid by leather wei...

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Abstract

The invention relates to a manufacturing technology for waterproof long fur and belongs to the technical field of two-layer leather. The manufacturing technology for the waterproof long fur comprises the following steps of water returning, retanning, basification, neutralization, dyeing, color fixing, waterproofing, washing, drying, softening and milling. According to the manufacturing technology for the waterproof long fur, water returning is conducted on leather, and ammonium sulfate and a degreasing agent are added, so that impurities in the leather are effectively removed, and the cleaning effect on the leather is good; in the subsequent retanning and basification processes, the softness of the leather is effectively strengthened through step-by-step operation, so that the leather surface is plump, the leather surface fiber fineness is enhanced, a full preparation is made for subsequent dyeing, dye completely infiltrates into leather fibers, and the color fastness is high; in addition, a filler is added, so that the bursting force of the leather is strengthened; through subsequent color fixing treatment and waterproofing treatment, the color fastness is effectively strengthened, and the waterproofness is improved; later, the impurities in the color fixing process are effectively removed through washing; and then drying, softening and milling are conducted, so that the softness of the leather is improved.

Description

technical field [0001] The invention belongs to the technical field of two-layer leather, and in particular relates to a production process of waterproof long fur. Background technique [0002] Split leather, also known as real leather, is obtained by splitting thick leather with a slicing machine. The first layer is used to make full-grain leather or trimmed leather, and the second layer is made into split leather through a series of processes such as painting or filming. Its fastness and wear resistance are poor, and it is the cheapest of its kind. After a long time of use, the second layer of leather will be tormented and even broken. It still maintains the characteristics of leather, but its durability and strength are not as good as the first layer of leather, and its waterproof performance is also relatively poor. Contents of the invention [0003] The technical problem to be solved by the invention is to provide a manufacturing process of waterproof long fur. [0...

Claims

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Application Information

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IPC IPC(8): C14B1/40C14B1/58C14C1/04C14C1/08C14C3/04C14C3/06C14C5/00C14C9/00D06P1/44D06P3/30D06P5/04
CPCC14B1/40C14B1/58C14C1/04C14C1/08C14C3/04C14C3/06C14C5/00C14C9/00D06P1/445D06P3/30D06P5/04
Inventor 许维奇
Owner 漳州香洲皮革有限公司
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