CN102747172A - Manufacturing method for chromium-free aldehyde-free tanned pigskin shoe lining leather - Google Patents
Manufacturing method for chromium-free aldehyde-free tanned pigskin shoe lining leather Download PDFInfo
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- CN102747172A CN102747172A CN2012102320289A CN201210232028A CN102747172A CN 102747172 A CN102747172 A CN 102747172A CN 2012102320289 A CN2012102320289 A CN 2012102320289A CN 201210232028 A CN201210232028 A CN 201210232028A CN 102747172 A CN102747172 A CN 102747172A
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Abstract
The invention provides a manufacturing method for chromium-free aldehyde-free tanned pigskin shoe lining leather. The method comprises the following steps: placing bare pigskin in a rotary drum and then adding industrial salt, sodium bicarbonate, peregal and disodium ethylenediaminetetraacetate; then adding a zirconium tanning agent, sodium bicarbonate and an aluminum tanning agent into the rotary drum, heating an obtained mixture to a temperature of 40 DEG C, allowing the rotary drum to rotate for 180 min, stopping the rotary drum and standing the rotary drum overnight; in the next day, taking the pigskin out from the rotary drum, carrying out washing, adding the washed pigskin into the rotary drum, then adding water, neutralization tannin and sodium bicarbonate into the rotary drum again and draining off water; adding water, Tara powder, a penetrating agent, sulfited fish oil, sulfited rape oil and formic acid into the drained rotary drum, taking the pigskin out from the rotary drum and stacking and standing the pigskin; and carrying out toggling, milling, toggling, trimming, ironing, grading and measuring according to a conventional process so as to obtain the chromium-free aldehyde-free tanned pigskin shoe lining leather. According to the invention, through addition of disodium ethylenediaminetetraacetate as a masking agent, a pH value is reasonably adjusted, process balance that the surface of the zirconium tanning agent is not excessively tanned and the aluminum tanning agent is not easily eluted is achieved, and manufacturing of the chromium-free aldehyde-free tanned pigskin shoe lining leather is made possible.
Description
Technical field
The present invention relates to a kind of method of manufacture of lining leather of pigskin shoes, be specifically related to the method for manufacture that a kind of Chrome-free does not have the aldehyde tannage lining leather of pigskin shoes.
Background technology
Lining leather of pigskin shoes is an important kind of corium leather, and wherein sexavalent chrome is that the content of Cr (VI) and free formaldehyde is an important green technology index of lining leather of pigskin shoes goods, directly determines the quality of lining leather of pigskin shoes.If contain Cr (VI) and free formaldehyde in the leather goods, can produce injury to human body.Get into after 2010; Most of country of European Union stipulates that in succession footwear remove from offices behind heat aging, and less than 3mg/kg, free formaldehyde is less than the 75mg/kg leather through the content of test Cr (VI), and at children's goods, reach that Cr (VI) must not detect in the toy product, free formaldehyde is less than 25mg/kg.
The existing method of manufacture of lining leather of pigskin shoes is:
1) through control, make the content of the Cr (VI) in the leather goods of producing be lower than 2.5mg/kg to stages operating methods such as the processing of pigskin raw material skin, tanning, neutralization, dyeing, retanning, oiling, arrangement, storages.This method adopts conventional chrome tanning process, has controlled the quantum of output of Cr (VI) in the finished product again, relative environmental protection.Therefore but owing to contain a large amount of Cr (III) in the finished product, be processed into the product shoes period of the day from 11 p.m. to 1 a.m, when the human consumer is wearing the shoes that this shoe lining leather makes, in the burn-in test process, under heating and effect of sunlight, all can producing Cr (VI), endangering human consumer's health.(king Chu. the manufacture craft of lining leather of pigskin shoes: China, CN200710070363 [P] .2008-01-09.)
2) adopt the organophosphorated salt chrome-free tanning agent, through softening, pickling, main tanning, return wet, oxidation, neutralization, retanning, environmental protection is produced in full gear does not have the chrome tanning lining leather of pigskin shoes.Do not have chrome tanning agent in this method course of processing, can not produce Cr (VI), relative environmental protection.Therefore but owing to contain the organophosphorus tanning agent in the finished product, after being processed into the finished product shoes, in considerable time, even whole shoes scrap from being processed into fully, under heating and effect of sunlight, all can constantly produce free formaldehyde, endanger human consumer's health.(Wang Dezhen. a kind of method of manufacture of chromium-free tanning environment protection pigskin shoes: China, CN200910036633 [P] .2009-06-24.)
Summary of the invention
The object of the invention provides a kind of no chrome tanning, does not contain formaldehyde, and environmental protection does not have the method for manufacture of aldehyde tannage lining leather of pigskin shoes to the Chrome-free of the friendly type of people.
For achieving the above object, the technical scheme that the present invention adopts is:
1) disacidify: naked pigskin and 100 parts the normal-temperature water of getting after 100 parts of picklings by mass fraction add in the rotary drum; And then adding 8-15 part Industrial Salt rotated 30 minutes in rotary drum; Add 0.2-0.8 part sodium bicarbonate, 0.1-0.3 part peregal and 0.1-0.3 part EDTA Disodium rotated 45 minutes;
2) main tanning: in rotary drum, add 1-3 part zirconium tanning agent and rotated 120-180 minute; The sodium bicarbonate that adds 0.1-0.5 part rotated 30 minutes; Adding 1-3 part aluminum tanning agent rotated 90 minutes; Add 0.2-0.8 part sodium bicarbonate again and rotated 30 minutes, the pH value of regulator solution is to be warmed up to 40 ℃ after 3.8 to change 180 minutes, stops bulging spending the night;
3) neutralization: next day; Go out drum, washing, the pigskin after the washing is joined in the rotary drum, in rotary drum, add in 200 parts of normal-temperature water and 1-3 part again and rotated 30 minutes with tannin; Add 0.2-0.5 part sodium bicarbonate and rotated 30 minutes, add 0.6-1 part sodium-acetate and rotate draining after 30 minutes;
4) retanning is refueled: the normal-temperature water that adds 200 parts in the rotary drum after draining; 3-6 part tower draws powder and 0.2 part of permeate agent AEO to rotate 60 minutes; Add 1-3 part sulfited fish oil and 1-3 part sulfiting rape seed oil and rotated 30 minutes, be warming up to 55 ℃ again and rotated 90 minutes, add 0.5-1 part formic acid and rotated 30 minutes; Add formic acid 0.5-1 part again and rotated 30 minutes, wash out drum and take horse and leave standstill;
5) by common process carry out toggling, fall soft, toggling, deburring, pressing, classification, gage promptly obtains Chrome-free does not have the aldehyde tannage lining leather of pigskin shoes.
Because zirconium tanning agent collapses face easily; The surface is crossed and is tanned, and aluminum tanning agent is not water-fast to be washed, and wash-out comes out easily; The present invention is a masking agent through adding EDTA Disodium; Reasonable adjustment pH reaches that only tan in the zirconium tanning agent surface and aluminum tanning agent is not easy the technological balance that wash-out comes out, and makes no aldehyde not have the possibility that creates of chrome tanning lining leather of pigskin shoes.Tan as main by aluminum tanning agent and a spot of zirconium tanning agent of cheap no potential murder by poisoning simultaneously, draw powder as retanning, thoroughly realized the manufacturing of lining leather of pigskin shoes real, that can wear next to the skin by natural tower.Moreover present method operation is basic technological operation, suitable tannery commercial application.
Specific embodiments
Embodiment 1:
1) disacidify: naked pigskin and 100 parts the normal-temperature water of getting after 100 parts of picklings by mass fraction add in the rotary drum; And then 8 parts of Industrial Salts of adding rotated 30 minutes in rotary drum; Add 0.4 part of sodium bicarbonate, 0.1 part of peregal and 0.15 part of EDTA Disodium rotated 45 minutes;
2) main tanning: in rotary drum, add 1 part of zirconium tanning agent and rotated 180 minutes; The sodium bicarbonate that adds 0.1 part rotated 30 minutes, added 2 parts of aluminum tanning agents and rotated 90 minutes, added 0.2 part of sodium bicarbonate again and rotated 30 minutes; The pH value of regulator solution is to be warmed up to 40 ℃ after 3.8 to change 180 minutes, stops drum and spends the night;
3) neutralization: next day; Go out drum, washing, the pigskin after the washing is joined in the rotary drum, in rotary drum, add again in 200 parts of normal-temperature water and 1 part and rotated 30 minutes with tannin; Add 0.2 part of sodium bicarbonate and rotated 30 minutes, add 0.6 part of sodium-acetate and rotate draining after 30 minutes;
4) retanning is refueled: the normal-temperature water that adds 200 parts in the rotary drum after draining; 3 parts of towers draw powder and 0.2 part of permeate agent AEO to rotate 60 minutes; Add 2 parts of sulfited fish oils and 1.5 parts of sulfiting rape seed oils and rotated 30 minutes, be warming up to 55 ℃ again and rotated 90 minutes, adds 0.5 part of formic acid rotation 30 minutes; Add 0.5 part in formic acid again and rotated 30 minutes, wash out drum and take horse and leave standstill;
5) by common process carry out toggling, fall soft, toggling, deburring, pressing, classification, gage promptly obtains Chrome-free does not have the aldehyde tannage lining leather of pigskin shoes.
Embodiment 2:
1) disacidify: naked pigskin and 100 parts the normal-temperature water of getting after 100 parts of picklings by mass fraction add in the rotary drum; And then 10 parts of Industrial Salts of adding rotated 30 minutes in rotary drum; Add 0.2 part of sodium bicarbonate, 0.2 part of peregal and 0.1 part of EDTA Disodium rotated 45 minutes;
2) main tanning: in rotary drum, add 3 parts of zirconium tanning agents and rotated 120 minutes; The sodium bicarbonate that adds 0.4 part rotated 30 minutes, added 3 parts of aluminum tanning agents and rotated 90 minutes, added 0.6 part of sodium bicarbonate again and rotated 30 minutes; The pH value of regulator solution is to be warmed up to 40 ℃ after 3.8 to change 180 minutes, stops drum and spends the night;
3) neutralization: go out drum, washing next day, the pigskin after the washing is joined in the rotary drum, in rotary drum, add again in 200 parts of normal-temperature water and 3 parts and rotated 30 minutes, adds 0.4 part of sodium bicarbonate and rotated 30 minutes, add 1 part of sodium-acetate rotation draining after 30 minutes with tannin;
4) retanning is refueled: the normal-temperature water that adds 200 parts in the rotary drum after draining; 4 parts of towers draw powder and 0.2 part of permeate agent (AEO) to rotate 60 minutes; Add 1 part of sulfited fish oil and 1 part of sulfiting rape seed oil and rotated 30 minutes, be warming up to 55 ℃ again and rotated 90 minutes, adds 0.6 part of formic acid rotation 30 minutes; Add 0.6 part in formic acid again and rotated 30 minutes, wash out drum and take horse and leave standstill;
5) by common process carry out toggling, fall soft, toggling, deburring, pressing, classification, gage promptly obtains Chrome-free does not have the aldehyde tannage lining leather of pigskin shoes.
Embodiment 3:
1) disacidify: naked pigskin and 100 parts the normal-temperature water of getting after 100 parts of picklings by mass fraction add in the rotary drum; And then 12 parts of Industrial Salts of adding rotated 30 minutes in rotary drum; Add 0.6 part of sodium bicarbonate, 0.3 part of peregal and 0.3 part of EDTA Disodium rotated 45 minutes;
2) main tanning: in rotary drum, add 2 parts of zirconium tanning agents and rotated 140 minutes; The sodium bicarbonate that adds 0.5 part rotated 30 minutes, added 1.5 parts of aluminum tanning agents and rotated 90 minutes, added 0.4 part of sodium bicarbonate again and rotated 30 minutes; The pH value of regulator solution is to be warmed up to 40 ℃ after 3.8 to change 180 minutes, stops drum and spends the night;
3) neutralization: next day; Go out drum, washing, the pigskin after the washing is joined in the rotary drum, in rotary drum, add again in 200 parts of normal-temperature water and 2 parts and rotated 30 minutes with tannin; Add 0.5 part of sodium bicarbonate and rotated 30 minutes, add 0.8 part of sodium-acetate and rotate draining after 30 minutes;
4) retanning is refueled: the normal-temperature water that adds 200 parts in the rotary drum after draining; 5 parts of towers draw powder and 0.2 part of permeate agent (AEO) to rotate 60 minutes; Add 3 parts of sulfited fish oils and 3 parts of sulfiting rape seed oils and rotated 30 minutes, be warming up to 55 ℃ again and rotated 90 minutes, adds 0.8 part of formic acid rotation 30 minutes; Add 0.8 part in formic acid again and rotated 30 minutes, wash out drum and take horse and leave standstill;
5) by common process carry out toggling, fall soft, toggling, deburring, pressing, classification, gage promptly obtains Chrome-free does not have the aldehyde tannage lining leather of pigskin shoes.
Embodiment 4:
1) disacidify: naked pigskin and 100 parts the normal-temperature water of getting after 100 parts of picklings by mass fraction add in the rotary drum; And then 15 parts of Industrial Salts of adding rotated 30 minutes in rotary drum; Add 0.8 part of sodium bicarbonate, 0.15 part of peregal and 0.2 part of EDTA Disodium rotated 45 minutes;
2) main tanning: in rotary drum, add 1.5 parts of zirconium tanning agents and rotated 160 minutes; The sodium bicarbonate that adds 0.3 part rotated 30 minutes, added 1 part of aluminum tanning agent and rotated 90 minutes, added 0.8 part of sodium bicarbonate again and rotated 30 minutes; The pH value of regulator solution is to be warmed up to 40 ℃ after 3.8 to change 180 minutes, stops drum and spends the night;
3) neutralization: next day; Go out drum, washing, the pigskin after the washing is joined in the rotary drum, in rotary drum, add again in 200 parts of normal-temperature water and 1.5 parts and rotated 30 minutes with tannin; Add 0.3 part of sodium bicarbonate and rotated 30 minutes, add 0.9 part of sodium-acetate and rotate draining after 30 minutes;
4) retanning is refueled: the normal-temperature water that adds 200 parts in the rotary drum after draining; 6 parts of towers draw powder and 0.2 part of permeate agent (AEO) to rotate 60 minutes; Add 2.5 parts of sulfited fish oils and 2 parts of sulfiting rape seed oils and rotated 30 minutes, be warming up to 55 ℃ again and rotated 90 minutes, adds 1 part of formic acid rotation 30 minutes; Add 1 part in formic acid again and rotated 30 minutes, wash out drum and take horse and leave standstill;
5) by common process carry out toggling, fall soft, toggling, deburring, pressing, classification, gage promptly obtains Chrome-free does not have the aldehyde tannage lining leather of pigskin shoes.
Technological difficulties of the present invention are main control of tanning, and zirconium tanning agent collapses face easily, and the surface is crossed and tanned; Aluminum tanning agent is not water-fast to be washed; Wash-out comes out easily, and the present invention is a masking agent through adding EDTA Disodium, rationally adjusts pH; Reach the zirconium tanning agent surface only tan with aluminum tanning agent be not easy the technological balance that wash-out comes out, make no aldehyde not have the possibility that creates of chrome tanning lining leather of pigskin shoes.
Claims (1)
1. a Chrome-free does not have the method for manufacture of aldehyde tannage lining leather of pigskin shoes, it is characterized in that may further comprise the steps:
1) disacidify: naked pigskin and 100 parts the normal-temperature water of getting after 100 parts of picklings by mass fraction add in the rotary drum; And then adding 8-15 part Industrial Salt rotated 30 minutes in rotary drum; Add 0.2-0.8 part sodium bicarbonate, 0.1-0.3 part peregal and 0.1-0.3 part EDTA Disodium rotated 45 minutes;
2) main tanning: in rotary drum, add 1-3 part zirconium tanning agent and rotated 120-180 minute; The sodium bicarbonate that adds 0.1-0.5 part rotated 30 minutes; Adding 1-3 part aluminum tanning agent rotated 90 minutes; Add 0.2-0.8 part sodium bicarbonate again and rotated 30 minutes, the pH value of regulator solution is to be warmed up to 40 ℃ after 3.8 to change 180 minutes, stops bulging spending the night;
3) neutralization: next day; Go out drum, washing, the pigskin after the washing is joined in the rotary drum, in rotary drum, add in 200 parts of normal-temperature water and 1-3 part again and rotated 30 minutes with tannin; Add 0.2-0.5 part sodium bicarbonate and rotated 30 minutes, add 0.6-1 part sodium-acetate and rotate draining after 30 minutes;
4) retanning is refueled: the normal-temperature water that adds 200 parts in the rotary drum after draining; 3-6 part tower draws powder and 0.2 part of permeate agent AEO to rotate 60 minutes; Add 1-3 part sulfited fish oil and 1-3 part sulfiting rape seed oil and rotated 30 minutes, be warming up to 55 ℃ again and rotated 90 minutes, add 0.5-1 part formic acid and rotated 30 minutes; Add formic acid 0.5-1 part again and rotated 30 minutes, wash out drum and take horse and leave standstill;
5) by common process carry out toggling, fall soft, toggling, deburring, pressing, classification, gage promptly obtains Chrome-free does not have the aldehyde tannage lining leather of pigskin shoes.
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Cited By (5)
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| CN103060488A (en) * | 2012-12-26 | 2013-04-24 | 四川亭江新材料股份有限公司 | Environment-friendly type crust leather production method |
| CN104109723A (en) * | 2014-07-18 | 2014-10-22 | 四川德华皮革制造有限公司 | Preparation method of dual-purpose hide for hair and leather by formaldehyde-free chrome-free tanning |
| CN104846127A (en) * | 2015-05-06 | 2015-08-19 | 浙江力源皮业有限公司 | Leather manufacture and production process thereof |
| CN107604106A (en) * | 2017-10-12 | 2018-01-19 | 宁夏盐池美雅滩羊裘皮有限公司 | A kind of cleaning tannery of beach woolfell |
| CN112226548A (en) * | 2020-09-04 | 2021-01-15 | 宜宾康信皮业工贸有限公司 | Production method for preparing ecological cow leather mat leather based on zirconium tanning agent and tannin extract |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060488A (en) * | 2012-12-26 | 2013-04-24 | 四川亭江新材料股份有限公司 | Environment-friendly type crust leather production method |
| CN104109723A (en) * | 2014-07-18 | 2014-10-22 | 四川德华皮革制造有限公司 | Preparation method of dual-purpose hide for hair and leather by formaldehyde-free chrome-free tanning |
| CN104846127A (en) * | 2015-05-06 | 2015-08-19 | 浙江力源皮业有限公司 | Leather manufacture and production process thereof |
| CN107604106A (en) * | 2017-10-12 | 2018-01-19 | 宁夏盐池美雅滩羊裘皮有限公司 | A kind of cleaning tannery of beach woolfell |
| CN107604106B (en) * | 2017-10-12 | 2020-08-25 | 宁夏盐池美雅滩羊裘皮有限公司 | Clean tanning method for Tan sheep fur |
| CN112226548A (en) * | 2020-09-04 | 2021-01-15 | 宜宾康信皮业工贸有限公司 | Production method for preparing ecological cow leather mat leather based on zirconium tanning agent and tannin extract |
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