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A kind of acid skin dry cleaning process of sheep wool leather

A technology of acid leather and fur leather, which is applied in the field of acid leather dry cleaning technology, can solve the problems of dry cleaning, etc., and achieve the effects of reducing usage, saving waste water discharge, and reducing enterprise costs

Active Publication Date: 2016-05-11
浙江中辉裘革科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a dry-cleaning process for sheep wool leather, so as to solve the existing problems of using a large amount of degreasing agent before tanning, and the need for dry-cleaning in the hide stage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of pickling skin dry-cleaning process of sheep wool leather, comprises the following steps:

[0038] Step 1, rehumidification: same as conventional process;

[0039] Step 2, spin dry;

[0040] Step three, shearing;

[0041] Step 4, main immersion: same as conventional process;

[0042] Step five, remove the meat;

[0043] Step 6, pretreatment: The composition of the pretreatment liquid is: synthetic fatliquor ST (UnitedChemicals) 1.5g / l, sulfited fatliquor EBC (CLP-COLORANTES) 1.7g / l, mixed fatliquor GF (German Rui leather technology) 2.3g / l, the rest is water. The amount of pretreatment liquid is added according to the mass ratio of water and fur in the pretreatment liquid is 25. At a temperature of 35°C, the time is 60min, then add fatty aldehyde PF (German Sima Chemical) 1.5g / l, the time is 2h, and then stand overnight;

[0044] Step seven, pickling: same as conventional process;

[0045] Step eight, dry;

[0046] Step 9, regain moisture: the compositi...

Embodiment 2

[0061] A kind of pickling skin dry-cleaning process of sheep wool leather, comprises the following steps:

[0062] Step 1, rehumidification: same as conventional process;

[0063] Step 2, spin dry;

[0064] Step three, shearing;

[0065] Step 4, main immersion: same as conventional process;

[0066] Step five, remove the meat;

[0067] Step 6, pretreatment: the composition of the pretreatment liquid is: synthetic fatliquor ST (UnitedChemicals) 3.0g / l, sulfited fatliquor EBC (CLP-COLORANTES) 2.0g / l, mixed fatliquor GF (German Swiss leather technology) 1.5g / l, the rest is water. The amount of pretreatment liquid is added according to the mass ratio of water and fur in the pretreatment liquid is 35. At a temperature of 36°C, the time is 55min, then polyaldehyde A-55 (UnitedChemicals) 2.5g / l is added, the time is 2h, and then stand overnight;

[0068] Step seven, pickling: same as conventional process;

[0069] Step eight, dry;

[0070] Step 9, regain moisture: the compositi...

Embodiment 3

[0085] A kind of pickling skin dry-cleaning process of sheep wool leather, comprises the following steps:

[0086] Step 1, rehumidification: same as conventional process;

[0087] Step 2, spin dry;

[0088] Step three, shearing;

[0089] Step 4, main immersion: same as conventional process;

[0090] Step five, remove the meat;

[0091] Step 6, pretreatment: the composition of the pretreatment liquid is: synthetic fatliquor ST (UnitedChemicals) 2.5g / l, sulfited fatliquor EBC (CLP-COLORANTES) 2.5g / l, mixed fatliquor GF (German Swiss leather technology) 1.5g / l, the rest is water. The amount of pretreatment liquid is added according to the mass ratio of water and fur in the pretreatment liquid is 40. At a temperature of 40°C, the time is 90min, then add fatty aldehyde PF (German Sima Chemical) 2.5g / l, the time is 1h, and then stand overnight;

[0092] Step seven, pickling: same as conventional process;

[0093] Step eight, dry;

[0094] Step 9, regain moisture: the composi...

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Abstract

The invention discloses a pickled leather dry-cleaning process for sheep wool leather. The process comprises the following steps of rewetting, spin drying, shearing, main soaking, fleshing, pretreating, pickling, air drying, moisture regaining of pickled leather, pulling and shoveling, dry cleaning, rewetting of the pickled leather, softening, pickling, tanning, wet grinding, neutralizing, fattening, dry finishing for the first time, retanning, dyeing and dry finishing for the second time to finally obtain a finished product, wherein a pretreatment solution used in the pretreating step comprises the following components: 1.0-3.0g / l of a synthetic fattening agent ST, 1.0-3.0g / l of a sulfited fattening agent EBC, 1.0-3.0g / l of a mixed fattening agent GF and the balance of water. By adopting the process disclosed by the invention, the usage amount of a degreasing agent, water and grease can be surely reduced to the utmost extent, and natural grease can be recovered, so that pollution to the environment can be greatly reduced, the discharge of wastewater can be effectively reduced, pollution control and production cost of enterprises are reduced, and the produced wool leather cannot have grease marks, chromium soap and the like due to incomplete degreasing.

Description

technical field [0001] The invention relates to a wool leather processing technology, in particular to an acid hide dry-cleaning technology for sheep wool leather. Background technique [0002] There are mainly three kinds of raw hides that can be used to make fur products, fetal cowhide, goatskin and sheepskin. Compared with the other two raw hides, sheepskin has a very high oil content, and liming operation cannot be carried out in the fur leather processing process, so Degreasing of fur hides becomes more difficult. The presence of natural oils can lead to the formation of chrome soaps during the tanning stage, affecting subsequent dyeing results. Present conventional operation is to add degreasing agent to carry out pre-tanning degreasing basically in each step before tanning, and the consumption of degreasing agent is very large. After tanning, dry cleaning is required to further remove the natural oils in the sheepskin during the hide stage. The effect of dry cleani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C1/00C14C1/04C14C1/08C14C3/00C14C9/02C14C15/00C14B1/02
Inventor 李飞虎
Owner 浙江中辉裘革科技有限公司
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