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Method for preparing cleaned three-proofing cow split leather and prepared cleaned three-proofing cow split leather

A two-layer leather, cleaning technology, applied in small raw hide/large raw hide/leather/fur treatment, leather impregnation, chemical treatment before tanning, etc. The effect of short production cycle, reduced chromium pollution and low cost

Active Publication Date: 2015-03-25
JINAN LURI JUNDA LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the difficulties existing in the three-proof technology of cowhide split leather, the present invention provides a preparation method of clean three-proof cowhide split leather, which solves the problems that the current general leather is not resistant to water, oil stains and fire prevention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The production process steps of clean three-proof cowhide split leather are as follows:

[0026] 1. Raw material leather: American cowhide two-layer wet blue leather;

[0027] 2. Return water: Add 300% of 40°C water, 1.5% oxalic acid, and 0.8% LIMANOL PEW to the drum, and turn it for 60 minutes, when the pH reaches 3.2-3.4, drain;

[0028] 3. Retanning and neutralization: add 100% normal temperature water and 2% glutaraldehyde tanning agent Ukatan 24 to the drum, and turn for 30 minutes, then add 2% phospholipid fatliquoring agent LIPOSL LQ, 1.5% sodium formate, 2% baking soda, turn for 120 minutes, pH reaches 5.5-6.0, drain;

[0029]4. Filling, dyeing, and fatliquoring: without adding water, add 9% filler (DT-R240: RETLNGAN R7: TGR with a mass ratio of 3:3:3) and 2% dye to the drum , 2% flame retardant Flacavon APT, turn for 40 minutes, add 100% water at a temperature of 50°C, 6% synthetic fatliquor DT-F606, 4% phospholipid fatliquor LIPOSL LQ, turn for 60 minutes ,...

Embodiment 2

[0037] The production process steps of clean three-proof cowhide split leather are as follows:

[0038] 1. Raw material leather: American cowhide two-layer wet blue leather;

[0039] 2. Return water: Add 150% of 30°C water, 0.5% oxalic acid, and 1.0% LIMANOL PEW to the drum, and turn it for 30 minutes until the pH reaches 3.2-3.5, then drain;

[0040] 3. Retanning and neutralization: add 150% normal temperature water, 5% glutaraldehyde tanning agent Ukatan 24 to the drum, and turn for 60 minutes, then add 6% phospholipid fatliquor LIPOSL LQ, 1% bicarbonate Ammonium, 1.5% baking soda, 1.5% sodium formate, turn for 180 minutes, the pH reaches 5.5-6.0, drain;

[0041] 4. Filling, dyeing, and fatliquoring: without adding water, add 3% filler (DT-R240: RETLNGAN R7: TGR with a mass ratio of 1:1:1) and 4% dye to the drum , 5% flame retardant Flacavon APT, turn for 80 minutes, add 150% water at a temperature of 50 ° C, 5% synthetic fatliquor DT-F606, 4% phospholipid fatliquor LIPOSL...

Embodiment 3

[0049] The production process steps of clean three-proof cowhide split leather are as follows:

[0050] 1. Raw material leather: American cowhide two-layer wet blue leather;

[0051] 2. Return water: Add 200% of 35°C water, 1.0% oxalic acid, and 0.5% LIMANOL PEW to the drum for 50 minutes until the pH reaches 3.5-4.0, then drain;

[0052] 3. Retanning and neutralization: add 120% normal temperature water and 3% glutaraldehyde tanning agent Ukatan 24 to the drum, and turn for 40 minutes, then add 4% phospholipid fatliquoring agent LIPOSL LQ, and 1% bicarbonate Ammonium, 1% baking soda, turn for 60 minutes, the pH reaches 5.0-6.0, drain;

[0053] 4. Filling, dyeing and fatliquoring: without adding water, add 6% filler (DT-R240: RETLNGAN R7: TGR with a mass ratio of 2:2:2) and 1.5% dye to the drum , 4% flame retardant Flacavon APT, turn for 30 minutes, add 80% water at a temperature of 50 ° C, 3% synthetic fatliquor DT-F606, 2% phospholipid fatliquor LIPOSL LQ, turn for 40 minu...

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Abstract

The invention discloses a method for preparing cleaned three-proofing cow split leather and prepared cleaned three-proofing cow split leather. Cow split blue wet leather serving as a raw material is subjected to the steps of water return, preliminary fat-liquoring chromium-free retanning, neutralization, filling, dyeing, fat liquoring, fixing, fireproof treatment, drying and the like to prepare the cleaned three-proofing cow split leather. A waterproof anti-fouling agent and a flame retardant are added in the preparation process to enable the three-proofing cow split leather to have waterproof, anti-fouling and fireproof functions, wherein the waterproof anti-fouling agent is a water-soluble fluoride, and the flame retardant is an inorganic flame retardant. The method has the advantages of being high in cleaning degree, small in water discharge amount, short in production period and low in cost, and the three-proofing cow split leather is good in waterproof, anti-fouling and fireproof effects.

Description

technical field [0001] The invention relates to a preparation method of a clean three-proof cowhide split leather and the clean three-proof cowhide split leather obtained by the method. Background technique [0002] In the prior art, most of the manufacturing technologies related to cowhide are front leather, and most of the commercially available products are cowhide front garment leather, shoe upper leather and the like. In recent years, the research on cowhide split leather has gradually deepened, but it is mostly limited to repaired leather and glove leather, and suede garment leather and film leather are also low-end products. Ordinary leather is not resistant to water and oil stains, and its durability, suitability for wearing, and universality of use are all restricted by many conditions. Especially when it rains, walks on muddy roads, or stains daily items such as leather shoes, clothing, sofas, etc. without special treatment, leather products are in a very embarras...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/08C14C9/00C14C9/02C14C1/00
Inventor 陈家钧李彦春孙高远靳丽强刘红祝德义蒋振荣
Owner JINAN LURI JUNDA LEATHER
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