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Hogskin suede vamp leather after-tanning wet finishing method

A processing method and technology for shoe upper leather, applied in leather surface treatment, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc. Insufficient thickness, large grinding depth, etc.

Inactive Publication Date: 2015-05-27
WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] If the grinding depth is large, the thickness of the leather sheet is not enough, generally between 0.9-1.2mm, and the fastness is not enough; the pores are large and obvious, the length of the fluff is different and uneven; the leather body is hard; Low rate and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 (light-colored pig leather)

[0043] Pigskin upper wet blue leather→squeezing water→first shaved (flesh surface)→second light shaved (shaved grain surface)→wet grinding→weighing→rewetting→washing→retanning→washing→neutralization→washing → primary fatliquoring, filling → washing, drumming → primary drying → secondary drying → moisture regain → vibration softening → dry grinding → weighing → water return → washing → dyeing, secondary fatliquoring → washing, drumming → drying → moisture regain →Break down→(Other processes)→Arrangement of dimensions, warehousing

[0044] (1) Pigskin upper wet blue leather: leather that has been tanned with a chrome tanning agent for processing pigskin.

[0045] (2) Squeeze water: Make the water content of the hide 45%-50%

[0046] (3) Shave once (meat-shaved noodles): Shave to a thickness of 1.5mm.

[0047] (4) Second light shaving (cutting the grain surface): shaving the grain surface, stretching and cutting the grain surf...

Embodiment 2

[0072] Embodiment 2 (light-colored pig leather)

[0073] Pigskin upper wet blue leather→squeezing water→first shaved (flesh surface)→second light shaved (shaved grain surface)→wet grinding→weighing→rewetting→washing→retanning→washing→neutralization→washing → primary fatliquoring, filling → washing, drumming → primary drying → secondary drying → moisture regain → vibration softening → dry grinding → weighing → water return → washing → dyeing, secondary fatliquoring → washing, drumming → drying → moisture regain →Falling soft→Spray the hand feeling→Arranging the ruler and putting it into the warehouse

[0074] (1) Pigskin upper wet blue leather: leather that has been tanned with a combination of chrome tanning agent and vegetable tanning agent for processing pig leather.

[0075] (2) Squeeze water: Make the water content of the hide 45%-50%

[0076] (3) One-time shaving (meat-shaved noodles): the thickness of shaving is 1.3mm.

[0077] (4) Second light shaving (cutting the ...

Embodiment 3

[0102] Embodiment 3 (black pig bag leather)

[0103] Pigskin upper wet blue leather→squeezing water→first shaved (flesh surface)→second light shaved (shaved grain surface)→wet grinding→weighing→rewetting→washing→retanning→washing→neutralization→washing →One-time fatliquoring, filling→water washing, drumming→first drying→secondary drying→moisture regain→vibration softening→dry grinding→weighing→water return→washing→dyeing, secondary fatliquoring→top dyeing→washing, drumming→ Drying → regain moisture → softening → spraying dye water → arranging scales and storing

[0104] (1) Pigskin upper wet blue leather: leather that has been tanned with a combination of chrome tanning agent and synthetic tanning agent for processing pigskin leather.

[0105] (2) Squeeze water: Make the water content of the hide 45%-50%

[0106] (3) One-time shaving (meat-shaved noodles): shaved to a thickness of 1.6mm.

[0107] (4) Second light shaving (cutting the grain surface): shaving the grain surf...

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Abstract

The invention discloses a hogskin suede vamp leather after-tanning wet finishing method which comprises the following steps: squeezing of hogskin vamp blue wet leather, primary shaving (flesh side), secondary light shaving (grain surface), wet milling, weighing, rewetting, water washing, retanning, water washing, neutralizing, water washing, primary greasing, filling, water washing, bulging, primary drying, secondary drying, remoistening, softening by vibration, dry milling, weighing, tempering, water washing, dyeing, secondary greasing, top dyeing, water washing, bulging, drying, remoistening, softening by throwing, (other steps), scaling, and warehousing. The finished product has the advantages of thin and short fuzz and no obvious pores, and is basically uniform; and the leather is plump and soft, has the advantages of high thickness, favorable fastness and high yield.

Description

technical field [0001] The invention belongs to the field of leather tanning, in particular to a post-tanning wet finishing method of pigskin nubuck upper leather. Background technique [0002] Pigskin nubuck upper leather (also known as pig leather in the market) is processed through pigskin tannin. In the market, the requirements for high-quality pig leather are: no obvious pores, fine and dense hair, basically uniform; thickness above 0.9mm, generally 1.2-1.5mm; full and soft leather body, good fastness; small part difference, Less trimming, high leather yield. [0003] The main structural characteristics of pigskin: [0004] (1) The grain surface is rough, and there are generally three pig hairs on the leather surface, arranged in a font. The pores are trumpet-shaped at the exit of the leather surface and appear particularly thick. Grain papilla has obvious protrusions and deep grooves, so the grain surface appears rough; [0005] (2) The position difference is larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C11/00
Inventor 许晓红周建飞刘建国黄小游
Owner WENZHOU UNIV
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