Processing method of seawater-proof vamp leather

A processing method and technology for shoe uppers, applied in leather manufacturing, leather impregnation, leather surface treatment, etc., can solve problems such as failure to meet normal wearing requirements and decline in waterproof performance indicators

Inactive Publication Date: 2011-08-31
HANGZHOU QIDA LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the disadvantages of the existing waterproof leather that the dynamic and static waterproof performance indexes drop sharply under the condition of seawater immersion, and cannot meet the requirements of normal wearing, and provides a seawater-proof cowhide shoe upper leather processing method, which can produce seawater-proof Cowhide shoe upper leather that still has certain softness, comfort and physical and mechanical properties after being etched and washed and dried many times with fresh water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] (1), pre-tanning treatment:

[0077] The salted cowhide is carried out in the following steps:

[0078] ①Water washing treatment: the specific concentration of the liquid in the drum is 2.5%, wash twice with water, the total time is 4 hours, combined with rotation and stop;

[0079] ②Enzyme-assisted immersion water: the specific concentration of the liquid in the drum is 2%, and at normal temperature, put soda ash with a concentration of 0.5% into the drum, put the cowhide in the drum for immersion treatment, and the treatment time is 22 hours. Soak until the heart is soaked in water and restore the state of fresh skin;

[0080] ③ One-time meat removal: after the enzyme-assisted immersion, the meat is removed once;

[0081] ④Depilation expansion: The specific concentration of the liquid in the drum is 2.5%. At room temperature, put sodium sulfide with a concentration of 1.6% and sodium hydrogen sulfide with a concentration of 3% into the drum, and put lime with a conc...

Embodiment 2

[0112] (1), pre-tanning treatment:

[0113] The salted cowhide is carried out in the following steps:

[0114] ①Water washing treatment: the specific concentration of the liquid in the drum is 2%, wash twice with water, the total time is 4 hours, and the combination of rotation and stop;

[0115] ② Enzyme assisted immersion water: the liquid specific concentration in the drum is 2%, and at normal temperature, put into the drum a soda ash with a concentration of 0.4%, put the cowhide in the drum for immersion treatment, and the treatment time is 20 hours. Soak until the heart is soaked in water and restore the state of fresh skin;

[0116] ③ One-time meat removal: after the enzyme-assisted immersion, the meat is removed once;

[0117] ④Depilation expansion: The specific concentration of the liquid in the drum is 2%. At room temperature, put sodium sulfide with a concentration of 1.0% and sodium hydrogen sulfide with a concentration of 5% into the drum, and put lime with a con...

Embodiment 3

[0150] (1), pre-tanning treatment:

[0151] The salted cowhide is carried out in the following steps:

[0152] ①Water washing treatment: the specific concentration of the liquid in the drum is 2%, wash twice with water, the total time is 4 hours, and the combination of rotation and stop;

[0153] ②Enzyme-assisted soaking water: the liquid specific concentration in the drum is 2%, and at normal temperature, put soda ash with a concentration of 0.5% into the drum, put the cowhide into the drum for immersion treatment, and the treatment time is 20 hours. Soak until the heart is soaked in water and restore the state of fresh skin;

[0154] ③ One-time meat removal: after the enzyme-assisted immersion, the meat is removed once;

[0155] ④Depilation expansion: The specific concentration of the liquid in the drum is 2%. At room temperature, put 2.2% sodium sulfide and 8% sodium hydrosulfide into the drum, and 3% lime Powder, put the once-fleshed cowhide into the drum for processing...

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PUM

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Abstract

The invention relates to a processing method of leather, in particular to the processing method of full grain or light corrected vamp leather, soft vamp leather, matte vamp leather, suede vamp leather and cowhide seawater-proof vamp leather of bag leather and belt leather. The processing of the leather is completed by treatment before tanning, tanning method, resin re-tanning, stuffing and dying method, chromium fixation, and varnishing method. The leather processed by adopting the processing method of the seawater-proof vamp leather is plump and soft, the leather surface is compact and not loose, the physical and mechanical strength is in line with the requirements of the vamp leather, the seawater-proof performance is good, and the range of applications is wide.

Description

technical field [0001] The patent of the present invention relates to a leather processing method, in particular to a full-grain or lightly repaired shoe upper leather, soft shoe upper leather, frosted shoe upper leather, suede shoe upper leather, bag leather and belt leather. Processing method of seawater shoe upper leather. Background technique [0002] The current waterproof leather processing technology mainly uses no surfactant in the wet processing stage, properly strengthens the fiber loosening treatment, and uses fat-type waterproof fatliquor for fatliquoring and waterproof finishing, so that the finished leather has certain dynamic and static anti-fresh water functions. The disadvantage is: because the average salinity of seawater is about 3.5%, and the pH value is generally about 8.1, it is a neutral medium and slightly alkaline, and it is in the best state of electrochemical ionized liquid, which is easy to form an electrochemical effect on waterproof leather. co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/00C14C1/04C14C1/06C14C1/08C14C3/02C14C3/28C14C3/08C14C3/22C14C11/00C14B1/02C14C9/02D06P3/32
Inventor 瞿爱花叶忠浩孙东潮李桂风汪建根费招成王斌赵亮
Owner HANGZHOU QIDA LEATHER
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