CN103805722A - Blue wet leather treatment process - Google Patents
Blue wet leather treatment process Download PDFInfo
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- CN103805722A CN103805722A CN201410067585.9A CN201410067585A CN103805722A CN 103805722 A CN103805722 A CN 103805722A CN 201410067585 A CN201410067585 A CN 201410067585A CN 103805722 A CN103805722 A CN 103805722A
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Abstract
The invention relates to the technical field of leather processing, and provides a blue wet leather treatment process which increases the yield of leather area, and is lower in loose side rate, uniform to dye, better in leather performance, less in use level of grease, economical, and cost-saving. The process comprises the following steps: splitting; shaving; weighing; rinsing; and retanning. The process is characterized in that at least a shaving treatment is further carried out after retanning step.
Description
Technical field
The present invention relates to leather processing technical field, relate in particular to a kind of wet blue leather treatment process.
Background technology
Rawhide is mainly to the course of processing of wet blue leather: batching → water purification → fleshing → depilation, liming, fleshing → cut open layer → deliming → softening → pickling → tanning → water squeezing stretching, extension → wet blue leather, the individual difference of raw material skin is very large, need to the quality of finished product be tended towards stability through batching, obtain again wet blue leather being processed after wet blue leather, technical process is wet blue leather → split → shaving → weigh → rinsing → redye, adopt such treatment process to process wet blue leather, the grain wrinkle of skin cannot be opened completely, the yield of leather of leather is less, the uniformity coefficient of dyeing is poor, retanning effect and finished leather poor-performing, loose side rate is higher.
Summary of the invention
Therefore, for above content, the invention provides that a kind of leather area yield of leather is high, even thickness, Color and the good wet blue leather treatment process of finished leather performance, the leather loose side rate that adopts this process value to obtain is lower, grease amount is less, can effectively save process hides cost, improve resultant leather quality.
For achieving the above object, the present invention is achieved by the following technical solutions: a kind of wet blue leather treatment process, comprise successively water squeezing, shaving, rinsing, neutralization, retanning, filling, dyeing, stuffing treatment process, after arbitrary treatment process of retanning, filling, dyeing, stuffing, also carry out shaving processing for the second time.
Further improve and be: the processing of described shaving is for the second time to carry out after filling treatment process.
Further improve and be: described shaving is processed with shaving treatment process is the same for the second time, and be all by skin base shaving to a ± 0.025mm, the thickness that a is leather, a is required to determine by finished leather.
Further improve and be: described stuffing treatment process is also carried out chromatography processing after handling.
Further improve and be: after shaving processing for the second time, also carry out rinsing, neutralization, retanning, filling, stuffing processing, after stuffing is processed, also carry out shaving processing for the third time.
Further improve and be: described shaving is for the third time processed with shaving treatment process is the same for the second time.
By adopting aforementioned techniques scheme, the invention has the beneficial effects as follows: the present invention processes wet blue leather, on the basis of tradition conventional " split → shaving → weighing → rinsing → redying ", carry out again shaving processing at least one times, the grain wrinkle of leather is fully opened, improve dye uniformity, improve retanning effect and finished leather performance, reduced loose side rate, effectively improve the Area Yield of leather.Further, on the basis of secondary shaving, also carry out redying processing, redye to process and comprise retanning, neutralization, dyeing, stuffing, filling work procedure, make worth Leather Properties better, compared with traditional treatment process, adopt treatment process of the present invention, yield of leather has increased by 5～15%, and the consumption of grease has reduced 2～4%.
Embodiment
Describe embodiments of the present invention in detail below with reference to specific embodiment, to the present invention, how utilisation technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
If do not specialize, the conventional means that the technique means adopting in embodiment is well known to those skilled in the art, the reagent adopting and product are also and can business obtain.Source, the trade(brand)name of agents useful for same and be necessary to list its moiety person all indicated in the time occurring first.
Embodiment mono-
A kind of wet blue leather treatment process, comprises following processing step, and except water squeezing, shaving, other treatment steps all adopt rotary drum operation, and mechanical effect mode is uniform rotation, and rotating speed is 7r/min, and chemical feedstocks consumption used is take leather weight as foundation:
(1) water squeezing and shaving: technique is carried out water squeezing, shaving processing to wet blue leather routinely, shaving thickness is 1.05～1.10mm;
(2) rinsing: wet blue leather after treatment shaving is put into rotary drum, add water 200 weight parts of 40 ℃, and add oxalic acid 0.5 weight part, surfactant B orron SAF0.3 weight part, grease-removing agent MPC 0.3 weight part, rotates 40min, discharges raffinate rinsing;
(3) neutralization, retanning: water 150 weight parts that add 30 ℃, add sodium formiate and sodium bicarbonate to regulate pH to 4.5, the condenses Tamol M(that is sequentially added into retanning agent trimeric cyanamide 3 weight parts, acrylic ester polymer 3 weight parts and aromatic sulphonic acid buys in BASF AG) 1 weight part, after rotation 90min, discharge raffinate rinsing; Then add dispersion agent JM(naphthalene sulfonic acid condensate, buy in Zhejiang Shenghui Chemical Industry Co., Ltd) 2 weight parts, modification quebracho extract 10 weight parts, modification chestnut extract 10 weight parts, modification wattle extract 10 weight parts, and can promote the Polymer Tanning Agent RV(of vegatable tannin infiltration to buy in BASF AG) 3 weight parts, after reaction 180min, add oxalic acid 0.5 weight part, after reaction 30min, rinsing goes out drum;
(4) shaving for the second time: carry out shaving processing for the second time by the technique of shaving for the first time of step (1), shaving thickness is 1.05～1.10mm;
(5) rinsing: add water 200 weight parts of 30 ℃, and add oxalic acid 0.3 weight part, clear spot agent 0.2 weight part, rinsing 30min, discharges raffinate after cleaning;
(6) retanning, neutralization, dyeing, stuffing and filling: water 50 weight parts that first add 25 ℃, then add retanning agent Dyhard RU 100 7816LT 3 weight parts, 3 parts by weight of acrylic acid ester polymer JR-301,2 weight part urea-formaldehyde resin SK-10, and anti-strand agent 0.1 weight part, black dyes 2.5 weight parts, dye dispersant LU 0.3 weight part, after reaction 40min, add styrene-maleic anhydride copolymer DST 3 weight parts, then react 40min; Supplement water 150 weight parts that add 50 ℃, formic acid 0.5 weight part, reaction 30min; Continue to supplement water 50 weight parts that add 50 ℃, add protein filling 2.5 weight parts, reaction 30min; Supplement water 50 weight parts that add 50 ℃ again, add compound grease 310L 3 weight parts, modification neat's foot oil 0.5 weight part, adds styrene-maleic anhydride copolymer DST 3 weight parts after reaction 30min, then reacts 40min; Then divide and add formic acid 2 weight parts for 2 times, reaction 40min; Discharge raffinate, then add water 200 weight parts of 50 ℃, the vexed 10min that washes, effluent discharge;
(7) chromatography: add water 300 weight parts of 50 ℃, formic acid 0.3 weight part, adds black dyes 0.8 weight part after reaction 10min, reaction 20min; Then add sour 0.3 weight part, reaction 10min, finally adds cation oil 0.5 weight part, after reaction 20min, discharges raffinate, after rinsing is clean, goes out drum.
Embodiment bis-
A kind of wet blue leather treatment process, comprises following processing step, and except water squeezing, shaving, other treatment steps all adopt rotary drum operation, and mechanical effect mode is uniform rotation, and rotating speed is 7r/min, and chemical feedstocks consumption used is take leather weight as foundation:
(1) water squeezing and shaving: technique is carried out wet blue leather water squeezing, split and shaving routinely, shaving thickness is 1.05～1.10mm;
(2) rinsing: add water 200 weight parts of 40 ℃, and add oxalic acid 0.5 weight part, surfactant B orron SAF0.3 weight part, grease-removing agent MPC0.3 weight part, rotates 30min; Discharge raffinate rinsing;
(3) neutralization and retanning and filling: water 150 weight parts that add 30 ℃, in adding and tannin PAK 3 weight parts, with sodium formiate and sodium bicarbonate adjusting pH to 4.5, the condenses Tamol M(that is sequentially added into retanning agent trimeric cyanamide 3 weight parts, acrylic ester polymer 3 weight parts and aromatic sulphonic acid buys in BASF AG) 1 weight part, after rotation 90min, discharge raffinate rinsing; Then add dispersion agent JM(naphthalene sulfonic acid condensate, buy in Zhejiang Shenghui Chemical Industry Co., Ltd) 2 weight parts, modification quebracho extract 10 weight parts, modification chestnut extract 10 weight parts, modification wattle extract 10 weight parts, and can promote the Polymer Tanning Agent RV(of vegatable tannin infiltration to buy in BASF AG) 3 weight parts, after reaction 180min, add oxalic acid 0.5 weight part, after reaction 30min, rinsing goes out drum;
(4) the 2nd shavings: carry out shaving processing by the 1st shaving technique, shaving thickness is 1.05～1.10mm;
(5) rinsing: add water 200 weight parts of 30 ℃, and add oxalic acid 0.3 weight part, clear spot agent 0.2 weight part, rinsing 30min, discharges raffinate after cleaning;
(6) retanning, dyeing, filling and stuffing: water 50 weight parts that first add 25 ℃, then add retanning agent Dyhard RU 100 7816LT 3 weight parts, acrylic ester polymer JR-301 3 weight parts, urea-formaldehyde resin SK-10 2 weight parts, and anti-strand agent 0.1 weight part, black dyes 2.0 weight parts, dye dispersant LU 0.3 weight part, after reaction 40min, add styrene-maleic anhydride copolymer DST 3 weight parts, then react 40min; Supplement water 150 weight parts that add 50 ℃, formic acid 0.5 weight part, reaction 30min; Continue to supplement water 50 weight parts that add 50 ℃, add protein filling 2.5 weight parts, reaction 30min; Supplement water 50 weight parts that add 50 ℃ again, add compound grease 310L 3 weight parts, modification neat's foot oil 0.5 weight part, adds styrene-maleic anhydride copolymer DST 3 weight parts after reaction 30min, then reacts 40min; Then divide and add formic acid 2 weight parts for 2 times, reaction 40min; Discharge raffinate, then add water 200 weight parts of 50 ℃, the vexed 10min that washes, effluent discharge;
(7) the 3rd shavings: carry out shaving processing by the 1st shaving technique, shaving thickness is 1.05～1.10mm;
(8) chromatography: add water 300 weight parts of 50 ℃, formic acid 0.3 weight part, adds black dyes 1.0 weight parts after reaction 10min, reaction 20min; Then add sour 0.3 weight part, reaction 10min, finally adds cation oil 0.5 weight part, after reaction 20min, discharges raffinate, after rinsing is clean, goes out drum.
In the present invention, shaving processing is carried out 2 times can reach above-described beneficial effect; Also can carry out 3 times and 3 above shaving processing, equally also can reach above effect, but shaving number of times too much can affect the continuity of production, extends manufacture cycle, therefore carry out 2 shavings and be treated to preferably selection.
The present invention processes wet blue leather, on the basis of tradition conventional " split → shaving → weighing → rinsing → redying ", carry out again shaving processing at least one times, the grain wrinkle of leather is fully opened, improve dye uniformity, improve retanning effect and finished leather performance, reduce loose side rate, effectively improved the Area Yield of leather.Further, on the basis of secondary shaving, also carry out redying processing, redye to process and comprise retanning, neutralization, dyeing, stuffing, filling work procedure, make worth Leather Properties better, compared with traditional treatment process, adopt treatment process of the present invention, yield of leather has increased by 5～15%, and the consumption of grease has reduced 2～4%.
Above record, only, for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (6)
1. a wet blue leather treatment process, comprises water squeezing, shaving, rinsing, neutralization, retanning, filling, dyeing, stuffing treatment process successively, it is characterized in that: after arbitrary treatment process of retanning, filling, dyeing, stuffing, also carry out shaving processing for the second time.
2. wet blue leather treatment process according to claim 1, is characterized in that: the processing of described shaving is for the second time to carry out after filling treatment process.
3. wet blue leather treatment process according to claim 1 and 2, is characterized in that: described shaving is processed with shaving treatment process is the same for the second time, and be all by skin base shaving to a ± 0.025mm, the thickness that a is leather, a is required to determine by finished leather.
4. wet blue leather treatment process according to claim 3, is characterized in that: described stuffing treatment process is also carried out chromatography processing after handling.
5. wet blue leather treatment process according to claim 2, is characterized in that: after shaving processing for the second time, also carry out rinsing, neutralization, retanning, filling, stuffing processing, after stuffing is processed, also carry out shaving processing for the third time.
6. wet blue leather treatment process according to claim 5, is characterized in that: described shaving is for the third time processed with shaving treatment process is the same for the second time.
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| CN201410067585.9A CN103805722B (en) | 2014-02-27 | 2014-02-27 | A kind of wet blue leather treatment process |
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| CN201410067585.9A CN103805722B (en) | 2014-02-27 | 2014-02-27 | A kind of wet blue leather treatment process |
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| CN103805722B CN103805722B (en) | 2016-04-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104293986A (en) * | 2014-08-14 | 2015-01-21 | 兴业皮革科技股份有限公司 | Waterproof cow leather preparation technology |
| CN105154600A (en) * | 2015-07-23 | 2015-12-16 | 湖州滨湖街道夕阳红皮革研发工作室 | Whole-station production ecological environmental protection process for pig, cow and sheep leather |
| CN105155307A (en) * | 2015-08-27 | 2015-12-16 | 兴业皮革科技股份有限公司 | Wet-state dyeing finishing and fixation method for leathers based on zirconium-aluminum-titanium complex |
| CN111217313A (en) * | 2020-01-15 | 2020-06-02 | 东莞市瑞豪家具制造有限公司 | Chromatic sofa and manufacturing method thereof |
| CN114407450A (en) * | 2021-12-08 | 2022-04-29 | 革乐美时尚有限公司 | Composite leather and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104293986A (en) * | 2014-08-14 | 2015-01-21 | 兴业皮革科技股份有限公司 | Waterproof cow leather preparation technology |
| CN105154600A (en) * | 2015-07-23 | 2015-12-16 | 湖州滨湖街道夕阳红皮革研发工作室 | Whole-station production ecological environmental protection process for pig, cow and sheep leather |
| CN105155307A (en) * | 2015-08-27 | 2015-12-16 | 兴业皮革科技股份有限公司 | Wet-state dyeing finishing and fixation method for leathers based on zirconium-aluminum-titanium complex |
| CN111217313A (en) * | 2020-01-15 | 2020-06-02 | 东莞市瑞豪家具制造有限公司 | Chromatic sofa and manufacturing method thereof |
| CN111217313B (en) * | 2020-01-15 | 2021-08-13 | 东莞市瑞豪家具制造有限公司 | Chromatic sofa and manufacturing method thereof |
| CN114407450A (en) * | 2021-12-08 | 2022-04-29 | 革乐美时尚有限公司 | Composite leather and preparation method thereof |
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| CN103805722B (en) | 2016-04-06 |
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