CN102703619A - Energy-saving and environment-friendly mink skin tanning method - Google Patents

Energy-saving and environment-friendly mink skin tanning method Download PDF

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Publication number
CN102703619A
CN102703619A CN2012101850593A CN201210185059A CN102703619A CN 102703619 A CN102703619 A CN 102703619A CN 2012101850593 A CN2012101850593 A CN 2012101850593A CN 201210185059 A CN201210185059 A CN 201210185059A CN 102703619 A CN102703619 A CN 102703619A
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Prior art keywords
tanning
solution
degreasing
mink skin
skin
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CN2012101850593A
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CN102703619B (en
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武志海
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Gucheng County Haiqing Leather & fur Co Ltd
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Gucheng County Haiqing Leather & fur Co Ltd
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Abstract

The invention discloses an energy-saving and environment-friendly mink skin tanning method, which comprises the following working procedures of: A) carrying out a soaking working procedure in soaking solution with the solution formula of 25g/L of table salt and 1g/L of soaking enzyme100-c; B) carrying out a degreasing and re-soaking working procedure in degreasing and re-soaking solution with the solution formula of 1ml/L of degreasing agent (Supralan80), 1ml/L of wetter ethanoic acid (HAC) and 0.5ml/L of degreasing enzyme200; C) carrying out a softening and picking working procedure in softening and picking solution with the solution formula of 40g/L of table salt, 2-3ml/L of Super lotan A, 0.5ml/L of Sinxit and 6g/L of glycolic acid; and D) carrying out a tanning working procedure in tanning solution with the solution formula of 40g/L of table salt, 10g/L of aluminite powder (Novaltan Al) and 4-5g/L of Tanning assist B. The energy-saving and environment-friendly mink skin tanning method disclosed by the invention has the advantages of simpleness in manufacturing and processing the mink skin, small water consumption and pollution, and higher energy saving and environment protection effect.

Description

A kind of energy saving and environment friendly mink skin process for tanning
Technical field
The invention belongs to the tannery field, particularly a kind of energy saving and environment friendly mink skin process for tanning.
Background technology
The Along with people's growth in the living standard, the human consumer is also increasingly high to the requirement of quality of the life, and the leather and fur industry is influenced by this to demonstrate fast development trend, and mink skin is one of world's fur three big important actors; Fur is precious, soft, and suitable for making frieze overcoat, fur cap, skin sleeve etc. after its tanning can be divided into according to grade: selected, positive season skin; Whole body lint is sufficient, flexible, concordant, solid colour; Good luster, high resilience, zero defect; One-level, positive season skin, whole body lint is complete, solid colour, glossy and elasticity, under hair is slightly empty, does not have wounded or disabled; Secondary, lint are slightly empty owes alive clever, and the color basically identical owes smooth, and there is little permanent disability the part, so the difference of tannery quality will directly have influence on the quality grade of fur.
Along with of the transfer of world market fur tanning dyeing processing industry to China and other developing countries; China has become global fur manufacturing and consumption big country, but most domestic processing enterprise fur tanning processing technology falls behind the loaded down with trivial details backwardness of technology; Scientific and technological content is low; Product harmful chemical content is higher, and the water resources consumption amount is big, and is seriously polluted.
Summary of the invention
The object of the present invention is to provide a kind of fabrication and processing simple, water consumption, the little energy saving and environment friendly mink skin process for tanning of pollution, its method comprises:
A, soaking process, said soaking process at solution formula is: salt: carry out in the immersion solution of 25g/L, soaking enzyme 100-c: 1g/L;
The multiple soaking process of B, degreasing, the multiple soaking process of said degreasing at solution formula is: grease-removing agent (Supralan 80): 1ml/L, wetting agent (Wetter HAC): 1ml/L, defatting enzyme 200:0.5 ml/L, degreasing soak again and carry out in the solution;
C, softening pickling procedure, said softening pickling procedure at solution formula is: salt: 40 g/L, plain ripple enzyme (Super lotan A): 2-3 ml/L, living match wetting agent (Sinxit): carry out in the softening pickling solution of 0.5ml/L, oxyacetic acid: 6g/L;
D, tanning operation, said tanning operation at solution formula is: salt: 40g/L, aluminium powder (Novaltan Al): 10g/L, auxiliary tanning agent B (Tanning assist b): carry out in the tanning solution of 4-5g/L.
Preferably, energy saving and environment friendly mink skin process for tanning of the present invention comprised also that before said soaking process said mink skin is carried out the shunt group to be criticized, peel and the fleshing step.
Preferably, energy saving and environment friendly mink skin process for tanning of the present invention, said soaking process is for carrying out 2-3 hour immersion step in 25 ℃ the immersion solution that said mink skin input is configured.
Preferably, energy saving and environment friendly mink skin process for tanning of the present invention, the defatting step that the multiple soaking process of said degreasing soaks again and carried out in the solution 2-3 hour for 35-36 ℃ the degreasing that said mink skin input is configured.
Preferably, energy saving and environment friendly mink skin process for tanning of the present invention on one side the multiple soaking process of said degreasing is thrown skin for paddling on one side, has been thrown paddling after 10 minutes, and per hour paddling 3-5 minute later on, after putting in place, the hide degreasing goes out skin, change softening pickling procedure over to.
Preferably, energy saving and environment friendly mink skin process for tanning of the present invention, softening pickling procedure is for carrying out 8 hours softening pickling step in 36 ℃ of softening pickling solution that the mink skin input behind the multiple soaking process of said degreasing is configured.
Preferably; Energy saving and environment friendly mink skin process for tanning of the present invention; Said softening pickling procedure be at first with the mink skin input after the said matting according to salt: 40 g/L, plain ripple enzyme (Super lotan A): 2-3 ml/L, grease-removing agent (Supralan 80): in the solution of 0.5ml/L paddling 10-15 minute, softeningly add oxyacetic acid after 1 hour: paddling is 15 minutes in the 6g/L solution.
Preferably, energy saving and environment friendly mink skin process for tanning of the present invention, said tanning operation is for carrying out 16 hours tanning step in the 35-36 ℃ of tanning solution that the mink skin input behind the said softening pickling procedure is configured.
Preferably; Energy saving and environment friendly mink skin process for tanning of the present invention; In the tanning solution that said tanning operation is prepared by salt 40g, aluminium powder (Novaltan Al) 6g, auxiliary tanning agent B (Tanning assist b) 1g for the mink skin input behind the at first said softening pickling procedure; Stir, continuously paddling; Add aluminium powder (Novaltan Al) 2g after 2 hours, after 2 hours, add aluminium powder (Novaltan Al) 2g; And every auxiliary tanning agent B (Tanning assist b) 1g that added at a distance from 1 hour after spending 4 hours; Whenever add the pH value that auxiliary tanning agent B should check solution, treat that the tanning solution pH value goes out skin and dries when reaching 3.6-3.8.
After adopting above-mentioned technology and solution, the present invention has following beneficial effect:
1, in soaking process, through using soaking enzyme 100-c, the interfibrous protein of dissolving rawhide; Make skin soft; Compare uniformly penetrating that traditional technology is more conducive to the tanning agent molecule and combine, and can partly decompose the intracutaneous grease, the structure that changes collegen filament makes rawhide recover fresh hide skin state.
2, in the multiple soaking process of degreasing; Through using new bio zymin 200 to cooperate novel grease-removing agent Supralan 80 and wetting agent Wetter HAC to regulate degreasing time; The hide degreasing time is shortened greatly, shorten to 2-3 hour by 10-20 hour of original traditional technology; The degreasing effect of hide is obvious better than traditional technology; Traditional technology can only be taken off the animal oil and fat on dermatotome surface; Present method can be taken off totally by the grease that hide is profound, and without pollutents such as sodium-chlor and formaldehyde, amount of surfactant has been reduced to minimum; Improved workman's work situation, the sewage of generation just can be easy to regard to biological degradation without handling.
3, in softening pickling process, use kind and concentration through the adjustmentization material, after being integrated, the softening and pickling two procedures in the traditional technology carries out simultaneously, saved the time and the energy; Organise material and biological enzyme formulation etc. through adding can biodegradableization material; The solution of making material and water can use continuously, and after two procedures was integrated, chemical reaction relaxed to some extent; Mao risk of falling in the hide course of processing reduces greatly, and the hide quality is significantly improved.
4, in the tanning operation,, the alum in the traditional water fur process for tanning, aluminium powder AL and alkanoic PF are combined tanning through the use kind and the usage ratio of adjustmentization material; Only change into and carry out tanning, kept the extensibility of hide after the softening pickling to greatest extent, reduced production cost significantly with aluminium powder (Novaltan Al); Improved quality product, and other auxiliary tanning agents are compared in the use of B powder (Tanning assist b); Can obviously strengthen the binding ability of tanning agent and fur; Fur is permeated the absorption of tanning agent more, and bonded is more even, has significantly reduced tanning agent content in the waste liquid.The solution of tanning can be recycled 4-5 times continuously, saved the consumption of changing material and water.
Embodiment
Come the present invention is done further detailed explanation below in conjunction with specific embodiment.
At first, with described mink skin carry out shunt group batch, peel and fleshing after, obtain purified mink skin, then according to the operation below respectively soak, degreasing is soaked again, softening pickling and tannery.
One, soaking process:Prepare immersion solution according to processing condition, evenly paddling is thrown skin.
Wherein, the processing condition of soaking process are:
A), use equipment: pond or paddle-tumble
B), liquor ratio: 2 (wet pelt quality meters)
C), industrial chemicals prescription:
Salt: 25g/L;
Soaking enzyme 100-c: 1g/L
D), time: 2-3 hour
E), temperature: 25 ℃
This soaking process is through using soaking enzyme 100-c; Dissolving rawhide interfibrous protein makes skin soft, compares uniformly penetrating that traditional technology is more conducive to the tanning agent molecule and combines; And can partly decompose the intracutaneous grease, the structure that changes collegen filament makes rawhide recover fresh hide skin state.
Two, the multiple soaking process of degreasing:Prepare skim soln by processing condition, skin is thrown on paddling limit, limit, throws paddling 10 minutes, per hour paddling 3-5 minute later on, goes out skin after the hide degreasing puts in place and changes softening pickling procedure over to.
Wherein, the processing condition of the multiple soaking process of degreasing are:
A), use equipment: pond or paddle-tumble
B) liquor ratio: 2-3 (wet pelt quality meter)
C), industrial chemicals prescription:
Grease-removing agent (Supralan 80): 1ml/L
Wetting agent (Wetter HAC): 1ml/L
Defatting enzyme 200:0.5 ml/L
D), time: 2-3 hour
E), temperature: 35-36 ℃
The multiple soaking process of this degreasing has thoroughly been overturned traditional homemade mink skin degreasing process; Through using new bio zymin 200 to cooperate novel grease-removing agent Supralan 80 and wetting agent Wetter HAC to regulate degreasing time; The hide degreasing time is shortened greatly, shorten to 2-3 hour by 10-20 hour of original traditional technology; The degreasing effect of hide is obvious better than traditional technology; Traditional technology can only be taken off the animal oil and fat on dermatotome surface; Present method can be taken off totally by the grease that hide is profound, and without pollutents such as sodium-chlor and formaldehyde, amount of surfactant has been reduced to minimum; Improved workman's work situation, the sewage of generation just can be easy to regard to biological degradation without handling.
Three, softening pickling procedure:Prepare softening pickling solution by processing condition, with in the softening pickling solution of hide input paddling 10-15 minute, add oxyacetic acid after 1 hour, paddling stopped paddling after 15 minutes.By the processing condition requirement, after the time, go out skin control water, get into the tanning operation.
Wherein, softening pickled processing condition:
A), use equipment, pond or paddle-tumble
B), liquor ratio: 2-3 (wet pelt quality meter)
C), industrial chemicals prescription:
Salt: 40 g/L
Plain ripple enzyme (Super lotan A): 2-3 ml/L
Grease-removing agent (Supralan 80): 0.5ml/L
Oxyacetic acid: 6g/L
D), the time: 8 hours
E), temperature: 35-36 ℃
This softening pickling procedure uses kind and concentration through the adjustmentization material, carries out simultaneously after the softening and pickling two procedures in the traditional technology is integrated, and has saved the time and the energy; Organise material and biological enzyme formulation etc. through adding can biodegradableization material; The solution of making material and water can use continuously, and after two procedures was integrated, chemical reaction relaxed to some extent; Mao risk of falling in the hide course of processing reduces greatly, and the hide quality is significantly improved.
Four, tanning operation:Salt 40g, aluminium powder (Novaltan Al) 6g, auxiliary tanning agent B (Tanning assist b) 1g are prepared tanning solution, stir; Hide is dropped into continuous paddling in the owse, add aluminium powder (Novaltan Al) 2g after 2 hours, after 2 hours, add aluminium powder (Novaltan Al) 2g; Every after 4 hours at a distance from 1 hour adding auxiliary tanning agent B (Tanning assist b) 1g, whenever add the pH value that auxiliary tanning agent B should check solution, treat that the tanning solution pH value goes out skin when reaching 3.6-3.8; Dry with drier, change the later stage finishing process over to.
The processing condition of wherein, tanning operation:
A), use equipment: star lattice rotary drum
B), liquor ratio: 2-3 (wet pelt quality meter)
C), industrial chemicals prescription:
Salt: 40g/L
Aluminium powder (Novaltan Al): 10g/L
Auxiliary tanning agent B (Tanning assist b): 4-5g/L
D), the time: 16 hours
E), temperature: 35-36 ℃
This tanning operation is through the use kind and the usage ratio of adjustmentization material; Alum in the traditional water fur process for tanning, aluminium powder AL and alkanoic PF are combined tanning, only change into and carry out tanning, kept the extensibility of hide after the softening pickling to greatest extent with aluminium powder (Novaltan Al); Reduced production cost significantly; Improve quality product, the solution of tanning can be recycled continuously 4-5 times, saved the consumption of changing material and water.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; And other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (9)

1. energy saving and environment friendly mink skin process for tanning, its method comprises:
A, soaking process, said soaking process at solution formula is: salt: carry out in the immersion solution of 25g/L, soaking enzyme 100-c: 1g/L;
The multiple soaking process of B, degreasing, the multiple soaking process of said degreasing at solution formula is: grease-removing agent (Supralan 80): 1ml/L, wetting agent (Wetter HAC): 1ml/L, defatting enzyme 200:0.5 ml/L, degreasing soak again and carry out in the solution;
C, softening pickling procedure, said softening pickling procedure at solution formula is: salt: 40 g/L, plain ripple enzyme (Super lotan A): 2-3 ml/L, living match wetting agent (Sinxit): carry out in the softening pickling solution of 0.5ml/L, oxyacetic acid: 6g/L;
D, tanning operation, said tanning operation at solution formula is: salt: 40g/L, aluminium powder (Novaltan Al): 10g/L, auxiliary tanning agent B (Tanning assist b): carry out in the tanning solution of 4-5g/L.
2. energy saving and environment friendly mink skin process for tanning according to claim 1 is characterized in that: comprised also that before said soaking process said mink skin is carried out the shunt group to be criticized, peel and the fleshing step.
3. energy saving and environment friendly mink skin process for tanning according to claim 1 is characterized in that: said soaking process is for carrying out 2-3 hour immersion step in 25 ℃ the immersion solution that said mink skin input is configured.
4. energy saving and environment friendly mink skin process for tanning according to claim 1 is characterized in that: the defatting step that the multiple soaking process of said degreasing soaks again and carried out in the solution 2-3 hour for 35-36 ℃ the degreasing that said mink skin input is configured.
5. energy saving and environment friendly mink skin process for tanning according to claim 4; It is characterized in that: on one side the multiple soaking process of said degreasing is thrown skin for paddling on one side, thrown paddling after 10 minutes, per hour paddling 3-5 minute later on; Go out skin after the hide degreasing puts in place, change softening pickling procedure over to.
6. energy saving and environment friendly mink skin process for tanning according to claim 1 is characterized in that: softening pickling procedure is for carrying out 8 hours softening pickling step in 36 ℃ of softening pickling solution that the mink skin input behind the multiple soaking process of said degreasing is configured.
7. energy saving and environment friendly mink skin process for tanning according to claim 6; It is characterized in that: said softening pickling procedure at first with the mink skin input after the said matting according to salt: 40 g/L, plain ripple enzyme (Super lotan A): 2-3 ml/L, grease-removing agent (Supralan 80): in the solution of 0.5ml/L paddling 10-15 minute, softeningly add oxyacetic acid after 1 hour: paddling is 15 minutes in the 6g/L solution.
8. energy saving and environment friendly mink skin process for tanning according to claim 1 is characterized in that: said tanning operation is for carrying out 16 hours tanning step in the 35-36 ℃ of tanning solution that the mink skin input behind the said softening pickling procedure is configured.
9. energy saving and environment friendly mink skin process for tanning according to claim 8; It is characterized in that: in the tanning solution that said tanning operation is prepared by salt 40g, aluminium powder (Novaltan Al) 6g, auxiliary tanning agent B (Tanning assist b) 1g for the mink skin input behind the at first said softening pickling procedure; Stir, continuously paddling; Add aluminium powder (Novaltan Al) 2g after 2 hours, after 2 hours, add aluminium powder (Novaltan Al) 2g; And every auxiliary tanning agent B (Tanning assist b) 1g that added at a distance from 1 hour after spending 4 hours; Whenever add the pH value that auxiliary tanning agent B should check solution, treat that the tanning solution pH value goes out skin and dries when reaching 3.6-3.8.
CN201210185059.3A 2012-06-07 2012-06-07 A kind of energy saving and environment friendly standard mink skin process for tanning Active CN102703619B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104673943A (en) * 2013-11-30 2015-06-03 孟州市光宇皮业有限公司 Method for manufacturing environment-friendly ecological tanned lamb skin
CN105525047A (en) * 2016-02-19 2016-04-27 北京泛博化学股份有限公司 Aluminum oil tanning method for raw muskrat skin
CN105586443A (en) * 2016-02-16 2016-05-18 北京泛博清洁技术研究院有限公司 Tanning process with pickling carried out with less salt
CN108048606A (en) * 2017-11-01 2018-05-18 朱国英 A kind of immersion technique in fur tannery
CN109295267A (en) * 2018-11-01 2019-02-01 浙江中辉裘革科技有限公司 The technique that Chrome-free poly-metals tanning agent prepares high-grade mink Qiu Ge
CN114736998A (en) * 2022-04-12 2022-07-12 浙江通天星集团股份有限公司 Production process of low-odor low-VOC cow leather sofa leather

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484924A (en) * 1982-07-03 1984-11-27 Rohm Gmbh Process for producing unhaired, storable hides and skins
CN1492056A (en) * 2002-10-23 2004-04-28 戢祖健 Process for producing pigskin garment leather
CN101314799A (en) * 2008-07-15 2008-12-03 内蒙古宇标食品有限责任公司 Goose-down fur processing technique
CN101921882A (en) * 2010-05-21 2010-12-22 河北肃昂裘革有限公司 Energy-saving and environmental-protection method for tanning raccoon fur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484924A (en) * 1982-07-03 1984-11-27 Rohm Gmbh Process for producing unhaired, storable hides and skins
CN1492056A (en) * 2002-10-23 2004-04-28 戢祖健 Process for producing pigskin garment leather
CN101314799A (en) * 2008-07-15 2008-12-03 内蒙古宇标食品有限责任公司 Goose-down fur processing technique
CN101921882A (en) * 2010-05-21 2010-12-22 河北肃昂裘革有限公司 Energy-saving and environmental-protection method for tanning raccoon fur

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104673943A (en) * 2013-11-30 2015-06-03 孟州市光宇皮业有限公司 Method for manufacturing environment-friendly ecological tanned lamb skin
CN105586443A (en) * 2016-02-16 2016-05-18 北京泛博清洁技术研究院有限公司 Tanning process with pickling carried out with less salt
CN105525047A (en) * 2016-02-19 2016-04-27 北京泛博化学股份有限公司 Aluminum oil tanning method for raw muskrat skin
CN105525047B (en) * 2016-02-19 2017-12-26 北京泛博化学股份有限公司 A kind of aluminium oil process for tanning of mustrat
CN108048606A (en) * 2017-11-01 2018-05-18 朱国英 A kind of immersion technique in fur tannery
CN109295267A (en) * 2018-11-01 2019-02-01 浙江中辉裘革科技有限公司 The technique that Chrome-free poly-metals tanning agent prepares high-grade mink Qiu Ge
CN109295267B (en) * 2018-11-01 2021-07-02 浙江中辉裘革科技有限公司 Process for preparing high-grade mink fur and leather by using chromium-free multi-metal tanning agent
CN114736998A (en) * 2022-04-12 2022-07-12 浙江通天星集团股份有限公司 Production process of low-odor low-VOC cow leather sofa leather
CN114736998B (en) * 2022-04-12 2023-10-20 浙江通天星集团股份有限公司 Production process of low-odor low-VOC (volatile organic compound) cow leather sofa leather

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