CN103603216B - A kind of leather retanning dyeing - Google Patents
A kind of leather retanning dyeing Download PDFInfo
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- CN103603216B CN103603216B CN201310614515.6A CN201310614515A CN103603216B CN 103603216 B CN103603216 B CN 103603216B CN 201310614515 A CN201310614515 A CN 201310614515A CN 103603216 B CN103603216 B CN 103603216B
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Abstract
The present invention relates to leather processing field, the leather retanning dyeing providing a kind of and significantly improve the dyeing degree of accuracy and full color degree, effectively save manpower, reduce energy consumption and material cost, reduce pollution to environment, reduce dyeing waste intractability, comprise rinsing, retanning, neutralization, filling, stuffing, dyeing process successively, in described dyeing process, pH controls 3.5 ~ 4.5, and dye dosage is 1.5 ~ 2.5%.
Description
Technical field
The present invention relates to leather processing field, particularly relate to a kind of leather retanning dyeing.
Background technology
Traditional leather retanning dyeing is: rinsing → retanning → neutralization → filling, dyeing → stuffing → chromatography, dyeing process carries out in the middle of retanning dyeing, stuffing process will be carried out after dyeing, the chromatography process carried out also is needed after stuffing, the waste liquid containing dyestuff all will be given off like this from dyeing stage casing, dyestuff need be added during the technique rinsing even had and carry out pre-dyed, the waste water that this technique is discharged from start to finish all contains dyestuff, increase intractability, usual skin retanning dyeing per ton needs more than 20 tons, use water, at least discharge is containing the waste water more than 12 tons of dyestuff, bring more serious environmental problem.Simultaneously traditional leather retanning dyeing step is comparatively complicated, dyeing is normal the multiple working procedure such as even to neutralize with filling, stuffing, retanning and carries out successively in same body lotion, inter process is not significantly distinguished, competitive relation is there is in dyestuff and grease, filler with the combination of leather, affect Color, need to use more material and manpower simultaneously.
Therefore, adopt above-mentioned traditional leather retanning dyeing to process leather, what produce is a large amount of more difficult containing dye wastewater, larger to the pollution of environment; The effect of leather coloring is poor, and the degree of accuracy is lower, and full color degree is poor.
Summary of the invention
Therefore, for above content, the leather retanning dyeing that the invention provides and a kind ofly significantly improve the dyeing degree of accuracy and full color degree, effectively save manpower, reduce energy consumption and material cost, reduce pollution to environment, reduce dyeing waste intractability.
For achieving the above object, the present invention is achieved by the following technical solutions: a kind of leather retanning dyeing, comprises rinsing, retanning, neutralization, filling, stuffing, dyeing process successively, and in described dyeing process, pH controls 3.5 ~ 4.5.
Further improvement is: described dyeing process is: take leather weight as materials foundation, first adds the dyestuff of 1.5 ~ 2.5% and the dye leveller of 0.2-0.5%, reaction 30 ~ 60min; Secondly, add the formic acid of 1 ~ 1.5%, reaction 15 ~ 30min; Then the chrome tanning agent of 0.3 ~ 0.6% is added, reaction 30 ~ 60min; Finally, add the cationic active agent of 1 ~ 1.5%, after reaction 15 ~ 30min, after washing is clean, go out skin.
Further improvement is: the parameter in described dyeing process is: liquor ratio 1.0 ~ 2.0, temperature are 38 ~ 42 DEG C, dyeing time is 1.5 ~ 2.5h, the uniform rotation of mechanism mode, and speed is 6-10r/min.
Further improvement is: described dyestuff be in anionic dye, cation dyes, amphion dyestuff one or more with arbitrarily than mixing mixture.
By adopting preceding solution, the invention has the beneficial effects as follows: traditional " rinsing → retanning → neutralization → dyeing → stuffing → chromatography " technological process changes to " rinsing → retanning → neutralization → filling → dyeing ", has the following advantages by the present invention:
1, propose a kind of new dyeing, decrease chromatography operation, shorten the reaction time; Simultaneously because pH is lower, the use amount of color-fixing agent can be reduced; Reduce energy consumption, save manpower, save cost;
2, described rinsing, retanning, neutralization, filling, stuffing operation are normal process steps and do not use any dyestuff, dyeing process no-arbitrary pricing, retanning agent, finish affect, and dyeing process finally carries out, not only dyestuff use amount is fewer than conventional, and Color is good, the dyeing degree of accuracy is high, and full color degree is good;
3, dyestuff strengthens with the binding ability of leather, and in residual solution, dye content is lower than normal dyeing; Decrease the discharge capacity containing pigment wastewater, in retanning dyeing, leather discharge waste water containing dye per ton drops to less than 5 tons from more than 12 tons, reduces sewage disposal difficulty, more environmental protection simultaneously.
Adopt the present invention to shorten the production cycle, save manpower and drum equipment, reduce energy consumption and material cost, dyeing process comparatively normal process steps reduces costs more than 5%; Because dye content in residual solution is lower than normal dyeing, the discharge capacity of waste water containing dye significantly reduces, and reduces the intractability of dyeing waste; Dye simultaneously and in the end carry out, influence factor is little, and the dyeing degree of accuracy is high, and full color degree is good; Be the New-type leather dyeing of a kind of " resource-conserving, environmentally friendly ", there is good society, economy and environment benefit.
Detailed description of the invention
Describe embodiments of the present invention in detail below with reference to specific embodiment, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.
If do not specialize, the conventional means that the technological means adopted in embodiment is well known to those skilled in the art, the reagent adopted and product be also can business obtain.Source, the trade name of agents useful for same and be necessary to list its constituent person, all indicate when occurring first.
Embodiment one
A kind of leather retanning dyeing, comprises the following steps:
(1) adopt rotary drum operation, mechanism mode is uniform rotation, and rotating speed is 8r/min, carries out rinsing, retanning, neutralization, filling, stuffing operation according to a conventional method, does not use any dyestuff in these operations;
(2) in the rotary drum at the leather place processed through (1), water 150 weight portion that temperature is 40 DEG C is added, regulate pH to 3.6, add brown dye leather NGR(producer: dyestuff factory, Qingdao) 2.5 weight portions, add the addition product of levelling agent INVADERMAL(aliphatic acid and fatty amine and oxirane, manufacturer: CIBA-GEIGY company of Switzerland) 0.2 weight portion, reaction 60min, add formic acid 1.0 weight portion, reaction 20min, add chromium retanning agent BITANCHROM26/33(producer: Tag Industrial Co., Ltd.) 0.6 weight portion, reaction 50min; Add cationic fat liquor BITOILSUP(producer: Tag Industrial Co., Ltd.) 0.6 weight portion, reaction 30min, washing, goes out drum after cleaning.
Embodiment two
A kind of leather retanning dyeing, comprises the following steps:
1) adopt rotary drum operation, mechanism mode is uniform rotation, and rotating speed is 7r/min, by carrying out rinsing, retanning, neutralization, filling, stuffing operation according to a conventional method, does not use any dyestuff in these operations;
2) in the rotary drum at the leather place processed through (1), water 160 weight portion that temperature is 42 DEG C is added, pH is regulated to be 3.9, add black dyes BLACKT(producer: Si Taer) 2 weight portions, add the addition product of levelling agent INVADERMAL(aliphatic acid and fatty amine and oxirane, manufacturer: CIBA-GEIGY company of Switzerland) 0.2 weight portion, reaction 40min, add formic acid 1.2 weight portion, reaction 15min, add chromium powder CHROMOSALBF(producer, bright Sheng chemistry) 0.5 weight portion, reaction 50min, finally add cationic fat liquor CatalixGSLiquid(fatty acid condensates) 0.5 weight portion, reaction 15min, drum is gone out after washing is clean.
In the present invention, described rinsing, retanning, neutralization, fill, stuffing operation is normal process steps, in described dyeing process, pH controls 3.5 ~ 4.5, chrome tanning agent can be used in retanning procedures, vegetable tanning agent and other tanning agent and two or more mixture thereof, in dyeing process, each parameter all can realize object of the present invention in following scope: liquor ratio 1.0 ~ 2.0, temperature is 38 ~ 42 DEG C, dyeing time is 1.5 ~ 2.5h, the uniform rotation of mechanism mode, speed is 6-10r/min, first the dyestuff of 1.5 ~ 2.5% and the dye leveller of 0.2-0.5% is added, reaction 30 ~ 60min, secondly, add the formic acid of 1 ~ 1.5%, reaction 15 ~ 30min, then the chrome tanning agent of 0.3 ~ 0.6% is added, reaction 30 ~ 60min, finally, add the cationic active agent of 1 ~ 1.5%, after reaction 15 ~ 30min, after washing is clean, go out skin.Described dyestuff is cation dyes, in anionic dye, amphion dyestuff any one or two or more so that all object of the present invention can be realized than the mixture of mixing arbitrarily.
Traditional " rinsing → retanning → neutralization → dyeing → stuffing → chromatography " technological process changes to " rinsing → retanning → neutralization → filling, retanning, stuffing → dyeing " by the present invention, have the following advantages: 1, propose a kind of new dyeing, decrease chromatography operation, shorten the reaction time; Simultaneously because pH is lower, the use amount of color-fixing agent can be reduced; Reduce energy consumption, save manpower, save cost; 2, described rinsing, retanning, neutralization, filling, stuffing operation are normal process steps and do not use any dyestuff, and dyeing process no-arbitrary pricing, retanning agent, finish affect, and dyeing process finally carries out, dyestuff use amount can be reduced, Color is good, and the dyeing degree of accuracy is high, and full color degree is good; 3, dyestuff strengthens with the binding ability of leather, and in residual solution, dye content is lower than normal dyeing; Decrease the discharge capacity containing pigment wastewater, in retanning dyeing, leather discharge waste water containing dye per ton drops to less than 5 tons from more than 12 tons, reduces sewage disposal difficulty, more environmental protection simultaneously.Adopt the present invention to shorten the production cycle, save manpower and drum equipment, reduce energy consumption and material cost, dyeing process comparatively normal process steps reduces costs more than 5%; Because dye content in residual solution is lower than normal dyeing, the discharge capacity of waste water containing dye significantly reduces, and reduces the intractability of dyeing waste; Dye simultaneously and in the end carry out, influence factor is little, and the dyeing degree of accuracy is high, and full color degree is good; Be the New-type leather dyeing of a kind of " resource-conserving, environmentally friendly ", there is good society, economy and environment benefit.
Above, be only the embodiment utilizing this origination techniques content, the modification that any those skilled in the art use this creation to do, change, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (3)
1. a leather retanning dyeing, is characterized in that: comprise rinsing, retanning, neutralization, filling, stuffing, dyeing process successively, and in described dyeing process, pH controls 3.5 ~ 4.5; Described dyeing process is: take leather weight as materials foundation, first adds the dyestuff of 1.5 ~ 2.5% and the dye leveller of 0.2-0.5%, reaction 30 ~ 60min; Secondly, add the formic acid of 1 ~ 1.5%, reaction 15 ~ 30min; Then the chrome tanning agent of 0.3 ~ 0.6% is added, reaction 30 ~ 60min; Finally, add the cationic active agent of 1 ~ 1.5%, after reaction 15 ~ 30min, after washing is clean, go out skin.
2. leather retanning dyeing according to claim 1, is characterized in that: the parameter in described dyeing process is: liquor ratio 1.0 ~ 2.0, temperature are 38 ~ 42 DEG C, the uniform rotation of mechanism mode, and speed is 6-10r/min.
3. leather retanning dyeing according to claim 1, is characterized in that: described dyestuff be in anionic dye, amphion dyestuff, cation dyes one or more with arbitrarily than mixing mixture.
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| CN201310614515.6A CN103603216B (en) | 2013-11-28 | 2013-11-28 | A kind of leather retanning dyeing |
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| CN201310614515.6A CN103603216B (en) | 2013-11-28 | 2013-11-28 | A kind of leather retanning dyeing |
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| CN103603216B true CN103603216B (en) | 2015-11-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103924460B (en) * | 2014-04-29 | 2016-08-24 | 湖南省怀其皮革集团制革有限公司 | A kind of method of dye on the anionic dye that two layers of organic tan leather produce |
| CN104293986B (en) * | 2014-08-14 | 2017-01-18 | 兴业皮革科技股份有限公司 | Waterproof cow leather preparation technology |
| TWI655334B (en) * | 2015-03-17 | 2019-04-01 | 日商可樂麗股份有限公司 | Feather-like artificial leather dyed with cationic dyes and manufacturing method thereof |
| CN107604109A (en) * | 2017-08-04 | 2018-01-19 | 山东德信皮业有限公司 | A kind of environmentally friendly dyeing of leather |
| CN107936842B (en) * | 2017-11-01 | 2020-04-21 | 兴业皮革科技股份有限公司 | Production method of leather with 3D effect |
Citations (5)
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| CN102080134A (en) * | 2010-12-21 | 2011-06-01 | 泉州锦兴皮业有限公司 | Manufacturing process of semi-vegetable tanned wrinkled leather of cow leather |
| CN102517409A (en) * | 2011-11-28 | 2012-06-27 | 郑州科信化工有限公司 | Leather retanning method |
| CN102864660A (en) * | 2012-09-29 | 2013-01-09 | 桐乡市雄鹰皮草有限公司 | Tanning and dyeing process for mink fur and leather |
| CN102943137A (en) * | 2012-09-25 | 2013-02-27 | 兴业皮革科技股份有限公司 | Preparation method of crazing soft bag leather |
| CN102943138A (en) * | 2012-09-25 | 2013-02-27 | 兴业皮革科技股份有限公司 | Manufacturing method of highly tear resistant ultrathin boot leather |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080134A (en) * | 2010-12-21 | 2011-06-01 | 泉州锦兴皮业有限公司 | Manufacturing process of semi-vegetable tanned wrinkled leather of cow leather |
| CN102517409A (en) * | 2011-11-28 | 2012-06-27 | 郑州科信化工有限公司 | Leather retanning method |
| CN102943137A (en) * | 2012-09-25 | 2013-02-27 | 兴业皮革科技股份有限公司 | Preparation method of crazing soft bag leather |
| CN102943138A (en) * | 2012-09-25 | 2013-02-27 | 兴业皮革科技股份有限公司 | Manufacturing method of highly tear resistant ultrathin boot leather |
| CN102864660A (en) * | 2012-09-29 | 2013-01-09 | 桐乡市雄鹰皮草有限公司 | Tanning and dyeing process for mink fur and leather |
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