CN104499319A - Cow leather dyeing process - Google Patents
Cow leather dyeing process Download PDFInfo
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- CN104499319A CN104499319A CN201410776891.XA CN201410776891A CN104499319A CN 104499319 A CN104499319 A CN 104499319A CN 201410776891 A CN201410776891 A CN 201410776891A CN 104499319 A CN104499319 A CN 104499319A
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Abstract
The invention relates to a cow leather dyeing process, belonging to the technical field of dyeing processing of leather materials. A preparation process comprises the following steps: returning water, namely adding water and industrial salt into a rotary drum; controlling baume degree; stripping leather; sequentially adding a de-greasing agent and baking soda in sequence after stripping the leather; rotating and adjusting pH; discharging a solution and carrying out a retanning procedure; after retanning, filling and adding grease; and then discharging water, washing with water and discharging from the drum. The process has the advantages that the use amount of dyes is few, the dye absorptivity is greatly improved and the environment pollution is alleviated; the plumpness of deep-color dyes and the brightness of light-color dyes can be effectively improved; and the cow leather dyeing process has the advantages in the aspects of dyeing rate, leveling property, permeability, color fastness and the like.
Description
Technical field
The present invention relates to a kind of dyeing of ox-hide, be specifically related to a kind of colouring method of leather ox-hide, belong to leather substance processing technique field.
Background technology
Leather is the not perishable Animal Skin of sex change obtained through physics, chemical processes such as depilation and tannings.Chinese leather industry, through adjusting and optimizing structure, has begun to take shape in the whole nation that a collection of division of labor based on specialization is clear and definite, characteristic is given prominence to, to the leather production characteristic region and the specialized market that pull local economy to play very important effect.Their formation, has established the basis of Chinese leather industry development.
Leather, by animal origin classification, mainly contains pig leather, ox-hide leather, sheep, horse skin leather, donkey hide leather and kangaroo leather etc., separately has a small amount of fish skin leather, reptile leather, amphibian animal leather, ostrich leather etc.Its heifer leather divides again ox leather, buffalo leather, yak leather and pien niu leather.In main a few class leather, ox leather is owing to putting down thin in its surface, and hair eye is little, the fine and closely woven consolidation of immanent structure, and leather body has plentiful and elastic sensation preferably, good physical performance.Therefore, excellent cattle leather is generally used as the cladding of high-grade goods, and its price is a class higher in large leather.
Leather coloring can improve leather outward appearance, improves its commodity value, and this is the important procedure that light leather is produced.Dyeing not only gives leather various tone, and requires that color is even, bright in colour, and has higher colorfastness, will reduce the dye content of waste liquid simultaneously.CN201110365279.X discloses a kind of method improving dyeing fastness of light beige semi-vegetable tanned goat leather, comprises and the raw material skin meeting technical requirement is carried out batching, water squeezing, tumbleweed ash, shaving and deburring by existing common process; Comprise the base skin of deburring carried out weigh, washing first, degreasing, secondary washing, oxalic acid treatment, three washings, chrome retanned, four washings, neutralization, five washings, dyeing are filled, six washings, stuffing fixation and wash for seven times.The light beige half vegetable tanning saffian leather dye dosage that the present invention makes is 1/3rd of the common process without color-fixing agent, 2/3rds are reduced than the common process without color-fixing agent, waste liquid clean absorption rate is high, be conducive to environmental protection, the light beige half vegetable tanning saffian leather resultant Leather face solid colour produced, uniform color, surface colour is full, between opening and opening, aberration is little, leather body is plentiful, pliable and tough, open and flat non-wrinkle, the advantage that this invention is given prominence to also improves perspiration fastness while being to improve dyeing fastness of light beige semi-vegetable tanned goat leather.CN201110264617.0 relates to a kind of dyeing and finishing technology, particularly relates to its technological process of a kind of leather acid dyeing technique to be: crust leather → dyeing → fixation → wash → dry, is characterized in that: described crust leather moisture controls at 60-70%; Described dyeing adopted acid dyeing, rotary drum transfer 1 hour; Described fixation adds formic acid.But the dyeing that these patents provide, the function in the vividness etc. of the plumpness and light colored dyes of improving dark dye is not too remarkable, therefore, is further improved.
Summary of the invention
The present invention is directed to prior art Problems existing, a kind of dyeing of ox-hide is provided, this technique dye dosage is less, substantially increase dye absorber rate, decrease environmental pollution, effectively can improve the plumpness of dark dye and the vividness of light colored dyes, superior performance in dye-uptake, level-dyeing property, permeability, color fast etc.
In order to solve the problem, the technical solution adopted in the present invention is:
A dyeing for ox-hide, comprises the following steps:
A. backwater: first add 100% ~ 110% water in rotary drum, adds Nacl 9% ~ 11%, rotates 20 minutes, controlling Baume degrees is 8 ~ 8.5, and then hypodermis, adds the degreasing agent of 0.3% ~ 0.5%, the sodium bicarbonate of 4% ~ 6% successively after hypodermis, rotate 20 minutes, regulate pH to be 6. 8 ~ 7.0, discharge opeing;
B. retanning: first add 50% ~ 60% water in rotary drum, dye dosage 0.5% ~ 0.6%, color additive 0.2% ~ 0.4%, rotates 15 minutes; Add formic acid 0.6% ~ 0.9%, control pH 3.5 ~ 3.8, rotate 15 minutes; Add chromium powder 3% ~ 6%, rotate 60 minutes; Add sodium formate 1.0% ~ 2.0%, sodium bicarbonate 0.3% ~ 0.35%, rotate 30 minutes, discharge opeing, washing;
C. fill, dyeing: first add 80% ~ 90% water in rotary drum, TRS 2% ~ 4%, large molecule acrylic acid 3%, rotate 40 minutes; NE 1.5% ~ 2.0%, DM 3% ~ 4%, rotates 40 minutes; PR 2% ~ 2.5%, tannin extract 1% ~ 2%, dyestuff 0.7% ~ 1.0%, color additive 0.2% ~ 0.3%, rotates 60 minutes; Finally add formic acid 0.8% ~ 0.9%, turn 30 minutes;
D. stuffing: moisturizing is 1:1.2 ~ 1.7 to solid-liquid ratio, is warming up to 40 ~ 60 DEG C, adds grease 7% ~ 11%, and turn 50 ~ 70 minutes, finally add formic acid 1%, rotate 40 minutes, draining, wash water, goes out drum.
The temperature of water used in described technique is 31 ~ 33 DEG C;
Described step D, grease used is sulphation animal oil.
The present invention relative to the beneficial effect of prior art is:
(1) ox-hide dyeing provided by the invention, employs dyeing assistant in process, and decrease the dyestuff materials of 30% ~ 50% than traditional handicraft, dye-uptake can reach more than 97.5%, and has good fixation, level dyeing, thoroughly dye, darkening effect.
(2) technique provided by the invention, easy and simple to handle, and without the need to special installation, suitability for industrialized is produced.
Detailed description of the invention
Be described in further details the present invention below by embodiment, these embodiments are only used for the present invention is described, do not limit the scope of the invention.
embodiment 1
A dyeing for ox-hide, comprises the following steps:
A. backwater: first add 100% water in rotary drum, adds Nacl 9%, rotates 20 minutes, and controlling Baume degrees is 8, and then hypodermis, adds the degreasing agent of 0.3%, the sodium bicarbonate of 4% successively after hypodermis, rotate 20 minutes, regulates pH to be 6. 8, discharge opeing;
B。Retanning: first add 50% water in rotary drum, dye dosage 0.5%, color additive 0.2%, rotates 15 minutes; Add formic acid 0.6%, control pH 3.5, rotate 15 minutes; Add chromium powder 3%, rotate 60 minutes; Add sodium formate 1.0%, sodium bicarbonate 0.3%, rotate 30 minutes, discharge opeing, washing;
C. fill, dyeing: first add 80% water in rotary drum, TRS 2%, large molecule acrylic acid 3%, rotate 40 minutes; NE 1.5%, DM 3%, rotates 40 minutes; PR 2%, tannin extract 1%, dyestuff 0.7%, color additive 0.2%, rotates 60 minutes; Finally add formic acid 0.8%, turn 30 minutes;
D. stuffing: moisturizing is 1:1.2 to solid-liquid ratio, is warming up to 40 DEG C, adds grease 7%, and turn 50 minutes, finally add formic acid 1%, rotate 40 minutes, draining, wash water, goes out drum.
embodiment 2
A dyeing for ox-hide, comprises the following steps:
A. backwater: first add 110% water in rotary drum, adds Nacl 11%, rotates 20 minutes, and controlling Baume degrees is 8.5, and then hypodermis, adds the degreasing agent of 0.5%, the sodium bicarbonate of 6% successively after hypodermis, rotate 20 minutes, regulates pH to be 7.0, discharge opeing;
B。Retanning: first add 60% water in rotary drum, dye dosage 0.6%, color additive 0.4%, rotates 15 minutes; Add formic acid 0.9%, control pH 3.8, rotate 15 minutes; Add chromium powder 6%, rotate 60 minutes; Add sodium formate 2.0%, sodium bicarbonate 0.35%, rotate 30 minutes, discharge opeing, washing;
C. fill, dyeing: first add 90% water in rotary drum, TRS4%, large molecule acrylic acid 3%, rotate 40 minutes; NE 2.0%, DM 4%, rotates 40 minutes; PR2.5%, tannin extract 2%, dyestuff 1.0%, color additive 0.3%, rotates 60 minutes; Finally add formic acid 0.9%, turn 30 minutes;
D. stuffing: moisturizing is 1:1.7 to solid-liquid ratio, is warming up to 60 DEG C, adds grease 11%, and turn 70 minutes, finally add formic acid 1%, rotate 40 minutes, draining, wash water, goes out drum.
embodiment 3
A dyeing for ox-hide, comprises the following steps:
A. backwater: first add 105% water in rotary drum, adds Nacl 10%, rotates 20 minutes, and controlling Baume degrees is 8.3, and then hypodermis, adds the degreasing agent of 0.4%, the sodium bicarbonate of 5% successively after hypodermis, rotate 20 minutes, regulates pH to be 7.0, discharge opeing;
B。Retanning: first add 55% water in rotary drum, dye dosage 0.55%, color additive 0.3%, rotates 15 minutes; Add formic acid 0.75%, control pH 3.6, rotate 15 minutes; Add chromium powder 4.5%, rotate 60 minutes; Add sodium formate 1.5%, sodium bicarbonate 0.33%, rotate 30 minutes, discharge opeing, washing;
C. fill, dyeing: first add 85% water in rotary drum, TRS 3 %, large molecule acrylic acid 3%, rotate 40 minutes; NE 1.75%, DM 3.5%, rotates 40 minutes; PR 2.3%, tannin extract 1.5%, dyestuff 0.9%, color additive 0.25%, rotates 60 minutes; Finally add formic acid 0.8%, turn 30 minutes;
D. stuffing: moisturizing is 1:1.5 to solid-liquid ratio, is warming up to 40 ~ 60 DEG C, adds grease 9%, and turn 60 minutes, finally add formic acid 1%, rotate 40 minutes, draining, wash water, goes out drum.
embodiment 4
A dyeing for ox-hide, comprises the following steps:
A. backwater: first add 103% water in rotary drum, adds Nacl 9.5%, rotates 20 minutes, and controlling Baume degrees is 8.1, and then hypodermis, adds the degreasing agent of 0.32%, the sodium bicarbonate of 4.5% successively after hypodermis, rotate 20 minutes, regulates pH to be 6. 8, discharge opeing;
B. retanning: first add 52% water in rotary drum, dye dosage 0.5%, color additive 0.25%, rotates 15 minutes; Add formic acid 0.7%, control pH 3.5, rotate 15 minutes; Add chromium powder 4%, rotate 60 minutes; Add sodium formate 1.2%, sodium bicarbonate 0.35%, rotate 30 minutes, discharge opeing, washing;
C. fill, dyeing: first add 82% water in rotary drum, TRS 2.3%, large molecule acrylic acid 3%, rotate 40 minutes; NE 1.6.0%, DM 3%, rotates 40 minutes; PR 2%, tannin extract 1.3%, dyestuff 0.8%, color additive 0.2%, rotates 60 minutes; Finally add formic acid 0.9%, turn 30 minutes;
D. stuffing: moisturizing is 1:1.3 to solid-liquid ratio, is warming up to 45 DEG C, adds grease 8%, and turn 54 minutes, finally add formic acid 1%, rotate 40 minutes, draining, wash water, goes out drum.
embodiment 5
A dyeing for ox-hide, comprises the following steps:
A. backwater: first add 108% water in rotary drum, adds Nacl 10.5%, rotates 20 minutes, and controlling Baume degrees is 8.4, and then hypodermis, adds the degreasing agent of 0.45%, the sodium bicarbonate of 5.5% successively after hypodermis, rotate 20 minutes, regulates pH to be 7.0, discharge opeing;
B. retanning: first add 58% water in rotary drum, dye dosage 0.59%, color additive 0.4%, rotates 15 minutes; Add formic acid 0.8%, control pH 3.8, rotate 15 minutes; Add chromium powder 5%, rotate 60 minutes; Add sodium formate 1.8%, sodium bicarbonate 0.35%, rotate 30 minutes, discharge opeing, washing;
C. fill, dyeing: first add 87% water in rotary drum, TRS 3.5%, large molecule acrylic acid 3%, rotate 40 minutes; NE 1.7%, DM 3.5%, rotates 40 minutes; PR 2.4%, tannin extract 1.7%, dyestuff 0.9%, color additive 0.25%, rotates 60 minutes; Finally add formic acid 0.9%, turn 30 minutes;
D. stuffing: moisturizing is 1:1.6 to solid-liquid ratio, is warming up to 55 DEG C, adds grease 10%, and turn 65 minutes, finally add formic acid 1%, rotate 40 minutes, draining, wash water, goes out drum.
Claims (3)
1. a dyeing for ox-hide, is characterized in that: comprise the following steps:
A. backwater: first add 100% ~ 110% water in rotary drum, adds Nacl 9% ~ 11%, rotates 20 minutes, controlling Baume degrees is 8 ~ 8.5, and then hypodermis, adds the degreasing agent of 0.3% ~ 0.5%, the sodium bicarbonate of 4% ~ 6% successively after hypodermis, rotate 20 minutes, regulate pH to be 6. 8 ~ 7.0, discharge opeing;
B. retanning: first add 50% ~ 60% water in rotary drum, dye dosage 0.5% ~ 0.6%, color additive 0.2% ~ 0.4%, rotates 15 minutes; Add formic acid 0.6% ~ 0.9%, control pH 3.5 ~ 3.8, rotate 15 minutes; Add chromium powder 3% ~ 6%, rotate 60 minutes; Add sodium formate 1.0% ~ 2.0%, sodium bicarbonate 0.3% ~ 0.35%, rotate 30 minutes, discharge opeing, washing;
C. fill, dyeing: first add 80% ~ 90% water in rotary drum, TRS 2% ~ 4%, large molecule acrylic acid 3%, rotate 40 minutes; NE 1.5% ~ 2.0%, DM 3% ~ 4%, rotates 40 minutes; PR 2% ~ 2.5%, tannin extract 1% ~ 2%, dyestuff 0.7% ~ 1.0%, color additive 0.2% ~ 0.3%, rotates 60 minutes; Finally add formic acid 0.8% ~ 0.9%, turn 30 minutes;
D. stuffing: moisturizing is 1:1.2 ~ 1.7 to solid-liquid ratio, is warming up to 40 ~ 60 DEG C, adds grease 7% ~ 11%, and turn 50 ~ 70 minutes, finally add formic acid 1%, rotate 40 minutes, draining, wash water, goes out drum.
2. the dyeing of a kind of ox-hide according to claim 1, is characterized in that: the temperature of water used in described technique is 31 ~ 33 DEG C.
3. the dyeing of a kind of ox-hide according to claim 1, is characterized in that: the grease described in step D is sulphation animal oil.
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| CN201410776891.XA CN104499319A (en) | 2014-12-17 | 2014-12-17 | Cow leather dyeing process |
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| CN201410776891.XA CN104499319A (en) | 2014-12-17 | 2014-12-17 | Cow leather dyeing process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133398A (en) * | 2015-08-27 | 2015-12-09 | 中国轻工业武汉设计工程有限责任公司 | Simple cow split leather color changing technology |
| CN106929611A (en) * | 2017-04-27 | 2017-07-07 | 广州红谷皮具有限公司 | A kind of ox-hide processing method |
| CN110760629A (en) * | 2019-12-03 | 2020-02-07 | 漳州香洲皮革有限公司 | Color changing method for cracked heavy resin embossed leather |
| CN112237362A (en) * | 2019-07-16 | 2021-01-19 | 上海水星家用纺织品股份有限公司 | Preparation method of cow leather summer sleeping mat with self-purification function and product |
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| GB1343918A (en) * | 1970-11-17 | 1974-01-16 | Basf Ag | Process for retanning and fat liquoring leather |
| CN1928122A (en) * | 2005-09-05 | 2007-03-14 | 杨河山 | Mat prepared from scalper skin and preparation process |
| CN102304592A (en) * | 2011-08-02 | 2012-01-04 | 峰安皮业股份有限公司 | Production process of suede leather |
| CN102676710A (en) * | 2012-05-29 | 2012-09-19 | 济南鲁日钧达皮革有限公司 | Method for preparing cleaned three-proofing cow split leather and prepared cleaned three-proofing cow split leather |
| CN103290149A (en) * | 2013-06-13 | 2013-09-11 | 浙江金鑫皮革有限公司 | Process for making goat upper leather |
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2014
- 2014-12-17 CN CN201410776891.XA patent/CN104499319A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1343918A (en) * | 1970-11-17 | 1974-01-16 | Basf Ag | Process for retanning and fat liquoring leather |
| CN1928122A (en) * | 2005-09-05 | 2007-03-14 | 杨河山 | Mat prepared from scalper skin and preparation process |
| CN102304592A (en) * | 2011-08-02 | 2012-01-04 | 峰安皮业股份有限公司 | Production process of suede leather |
| CN102676710A (en) * | 2012-05-29 | 2012-09-19 | 济南鲁日钧达皮革有限公司 | Method for preparing cleaned three-proofing cow split leather and prepared cleaned three-proofing cow split leather |
| CN103290149A (en) * | 2013-06-13 | 2013-09-11 | 浙江金鑫皮革有限公司 | Process for making goat upper leather |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133398A (en) * | 2015-08-27 | 2015-12-09 | 中国轻工业武汉设计工程有限责任公司 | Simple cow split leather color changing technology |
| CN105133398B (en) * | 2015-08-27 | 2017-06-09 | 中国轻工业武汉设计工程有限责任公司 | A kind of two layers of ox-hide simplified change colour technique |
| CN106929611A (en) * | 2017-04-27 | 2017-07-07 | 广州红谷皮具有限公司 | A kind of ox-hide processing method |
| CN106929611B (en) * | 2017-04-27 | 2019-07-05 | 广州红谷皮具有限公司 | A kind of ox-hide processing method |
| CN112237362A (en) * | 2019-07-16 | 2021-01-19 | 上海水星家用纺织品股份有限公司 | Preparation method of cow leather summer sleeping mat with self-purification function and product |
| CN110760629A (en) * | 2019-12-03 | 2020-02-07 | 漳州香洲皮革有限公司 | Color changing method for cracked heavy resin embossed leather |
| CN110760629B (en) * | 2019-12-03 | 2022-01-18 | 漳州香洲皮革有限公司 | Color changing method for cracked heavy resin embossed leather |
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