CN105567886A - Chrome-free tanned sheepskin garment leather preparation technology - Google Patents
Chrome-free tanned sheepskin garment leather preparation technology Download PDFInfo
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- CN105567886A CN105567886A CN201610050187.5A CN201610050187A CN105567886A CN 105567886 A CN105567886 A CN 105567886A CN 201610050187 A CN201610050187 A CN 201610050187A CN 105567886 A CN105567886 A CN 105567886A
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- tanning
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C5/00—Degreasing leather
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention belongs to the field of garment leather preparation technologies and particularly relates to a chrome-free tanned sheepskin garment leather preparation technology. The technology comprises following steps (starting from a pickled skin crust and taking the mass of pickled skin as a reference for addition amounts of additives for all procedures): degreasing and softening, pickling and softening, tanning, primary degreasing, wringing and retanning as well as wringing and dyeing. The chrome-free tanned sheepskin garment leather preparation technology has the advantages that the steps are simple, the preparation efficiency is high, equipment requirements are low during preparation, the technology is energy-saving and environment-friendly, and prepared garment leather is wear-resistant, high-temperature-resistant, full and soft.
Description
Technical field
The invention belongs to clothing leather preparation technology field, particularly relate to a kind of without chrome tanning lamb skin clothing leather preparation technology.
Background technology
Curriery is the important traditional light industry of China, is also one of comparatively serious industry of blowdown.Traditional leather many employings chromium makes tanning agent, the chrome tanned leather that processing obtains has high temperature resistant, Heat stability is good, leather body is plentiful, soft advantage, but because the heavy metal contamination that chromium ore resource is limited and chrome tanning produces, in people's pay attention to day by day living environment, pay close attention to the today using environmental protection leather, development becomes inexorable trend without chrome tanning leather.
The Chinese invention patent that patent publication No. is CN101225450A, publication date is 2008.07.23 discloses the chrome-free tanning production technique of a kind of goat skin gloves leather, include following step, softening → pickling → organic phosphine tanning → be oxidized → take horse to leave standstill → water squeezing stretching, extension → shaving → washing → degreasing, rinsing → washing → using brother chemicals → washing, then chrome tanning subsequent technique routinely carries out.
But it is complicated to there is tanning step in the production technique of this invention, and efficiency is low, and the glove leather of tanning is of poor quality, plentiful not, problem soft not.
Summary of the invention
The object of this invention is to provide a kind of without chrome tanning lamb skin clothing leather preparation technology, it is simple that it has step, and preparation efficiency is high, and the clothing leather preparing gained is wear-resisting, high temperature resistant, plentiful, soft advantage.
The technical scheme that the present invention overcomes the above problems employing is: a kind of without chrome tanning lamb skin clothing leather preparation technology, comprise the following steps (from sour skin scytoblastema, the addition of each operation additive with the quality of sour skin for benchmark): degreasing eases back, pickling eases back, tanning, main degreasing, water squeezing retanning and water squeezing dyeing, the described degreasing liquor ratio in step that eases back is 100%, add the grease-removing agent of 3.0-4.0% and the Industrial Salt of 10-12%, pH is 6.0-6.2, temperature is 25-28 DEG C, the degreasing time of easing back is 90-120min, the described pickling liquor ratio in step that eases back is 100-200%, add the sulfuric acid of 1.0-1.3% and the Industrial Salt of 10-13%, pH is 2.0-2.5, temperature is 25-26 DEG C, the pickling time of easing back is 120-130min, the tanning agent adopted in described tanning step comprises aluminum tanning agent and glutaraldehyde tanning agent, pH scope divides three phases, early stage is 3.0-3.2, sodium formiate and sodium bicarbonate adjustment is added by first time, mid-term is 3.5-3.6, add sodium formiate by second time to regulate, later stage is 4.0-4.5, add sodium bicarbonate by second time to regulate, temperature is 33-35 DEG C, in described main defatting step, liquor ratio is 100%, add the oxalic acid of 1.0-1.2% and the grease-removing agent of 1.0-1.5%, pH is 3.2-3.4, temperature is 50-52 DEG C, degreasing time is 60-65min, composite tanning agent is adopted in described water squeezing retanning step, liquor ratio is 150%, pH is 6.2-6.5, described water squeezing retanning temperature is 32-35 DEG C, in described water squeezing staining procedure, liquor ratio is 100%, pH is 3.8-4.0, the temperature of described water squeezing dyeing is 50-52 DEG C.The preparation technology of lamb skin clothing leather described in this setting has that step is simple, and preparation efficiency is high, the advantage of the low and energy-conserving and environment-protective of the requirement of preparation process to equipment.
Preferred technical scheme is further: first regulate pH to 3.0-3.2 by the sodium bicarbonate of the sodium formiate and 0.5-1.0% that add 1.0-1.2% in described tanning step, stir 90-100min, add the aluminum tanning agent of 2.0-4.0% and the glutaraldehyde tanning agent of 6.0-9.0% again, the sodium formiate being added 1.0-1.2% by second time regulates pH to be 3.5-3.8, stir 270-300min, then other compositions of tanning are added, add fatting agent successively, antioxidant, tannin, iron powder and mould inhibitor, the total amount of described tanning ancillary component is 7.5-8.0%, stir 200-250min, adding sodium bicarbonate finally by second time regulates pH to be 4.0-4.5, be warming up to 32-33 DEG C, stir 300-350min.It is high that tanning step described in this setting has tanning efficiency, and tanning is effective, makes described clothing leather more soft, is easy to the operations such as follow-up dyeing and fat-liquoring.
Preferred technical scheme is further: described glutaraldehyde tanning agent adds at twice, is 3.0-3.5% at every turn, interval 60-80min.
Further preferred technical scheme is: in described tanning ancillary component, fatting agent is 0.5-1.0%, antioxidant is 1.0-1.2%, add rear stirring 10-15min, add the tannin of 6.0-6.5%, divide equally three times to add, every minor tick 30-35min, finally add the iron powder of 0.2-0.3% and the mould inhibitor of 0.1-0.2%, stir 30-35min.
Preferred technical scheme is further: the amount that described sodium bicarbonate adds is 1.5-2.0%, is divided into five times and adds, every minor tick 25-30min.
Further preferred technical scheme is: carry out after described tanning step that drum takes that horse leaves standstill successively, setting-out gets rid of soft, split and shaving deburring step, controlling leather bilayer thickness in described split step is 1.4-1.6mm, and the bilayer thickness controlling described leather in described shaving step is 1.2-1.3mm.
Preferred technical scheme is further: the composite tanning agent first adding 4.5-5.0% in described water squeezing retanning step, stir 120-130min, add retanning ancillary component again, comprise the retanning modifying agent of the surfactivity defrosting compound of 1.0-1.5%, the vulcanization accelerator of 2.0-2.5% and 2.0-2.2%, stir 150-180min, the sodium bicarbonate finally adding 2.0-2.5% regulates pH to 6.2-6.5, stirs 60-80min.This retanning arranges to have and improves described clothing leather flexibility, improves fullness ratio, reduction section potential difference, changes surface charge, promote the advantages such as even dyeing.
Preferred technical scheme is further: the composite tanning agent adopted in described water squeezing retanning step comprises the acrylic resin of the glutaraldehyde tanning agent of 1.5-1.8%, the improvement Caesalpinia spinosaKuntze vegetable tanning agent of 1.0-1.2% and 2.0-2.4%.
Preferred technical scheme is further: first add dyestuff in described water squeezing staining procedure and add dyeing ancillary component again, comprise the dispersion agent of 1.0-1.4% and the migration inhibitor of 4.0-6.0%, finally add the sulfited fish oil of 2.0-2.5% as fatting agent, finally add the first acid for adjusting pH of 1.2-1.4% to 3.8-4.0, stir 120-150min.
Further preferred technical scheme is: carry out extension after described water squeezing staining procedure and dry in the air and get rid of soft, color spray and draw soft, described color spray operation and describedly draw soft operation to hocket, and carries out altogether three groups of color sprays and draws soft operation.
The invention provides a kind of without chrome tanning lamb skin clothing leather preparation technology, it is simple that it has step, and preparation efficiency is high, and preparation process is low for equipment requirements, energy-conserving and environment-protective, and the clothing leather preparing gained is wear-resisting, high temperature resistant, plentiful, soft advantage.
Embodiment
The following stated is only preferred embodiment of the present invention, non-ly limits scope of the present invention.
Embodiment: a kind of without chrome tanning lamb skin clothing leather preparation technology, comprise the following steps (from sour skin scytoblastema, the addition of each operation additive with the quality of sour skin for benchmark): degreasing eases back, pickling eases back, tanning, main degreasing, water squeezing retanning and water squeezing dyeing, the following detailed description of the specific embodiment of the present invention:
Operation consumption materials temperature-time remarks
Degreasing eases back 10% Industrial Salt, 25 DEG C of liquor ratios 100%
3.0% grease-removing agent 90minpH6.0
25 DEG C of washing 30min
Pickling eases back 10% Industrial Salt, 25 DEG C of liquor ratios 100%
1.0% sulfuric acid 100minpH2.0
Tanning 1.0% sodium formiate
0.5% sodium bicarbonate 30minpH3.0
0.5% phospho-glycerol three ester 30min
2.0% aluminum tanning agent 60min
3.0% glutaraldehyde tanning agent 60min
3.0% glutaraldehyde tanning agent 90min
1.0% sodium formiate 30minpH3.5
1.0% antioxidant 10min
2.0% tannin 30min
2.0% tannin 30min
2.0% tannin 90min
0.2% iron powder
0.1% mould inhibitor 30min
1.5% sodium bicarbonate 30 × 5minpH4.0
(be warming up to 33 DEG C, stir 300min, then stop drum and spend the night)
Go out drum and take that horse leaves standstill, setting-out gets rid of soft, split, shaving deburring, split stage bilayer thickness 1.4mm, shaving stage bilayer thickness 1.2mm
Main degreasing 1.0% oxalic acid 50 DEG C of liquor ratios 100%
1.0% grease-removing agent 60minpH3.2
Water squeezing retanning 1.5% glutaraldehyde tanning agent 32 DEG C of liquor ratios 150%
1.0% Caesalpinia spinosaKuntze vegetable tanning agent
2.0% acrylic resin 120min
1.0% surfactivity defrosting compound
2.0% vulcanization accelerator
2.0% retanning modifying agent 150min
2.0% sodium bicarbonate 60minpH6.2
Water squeezing dye 50 DEG C
1.0% dispersion agent
4.0% migration inhibitor 90minpH6.0
2.0% sulfited fish oil 50 DEG C liquor ratio 200%
1.2% formic acid 120minpH3.8
Cooling is taken out, and hanging dries in the air gets rid of soft, color spray and draw soft (in triplicate), and deburring dipping is put in storage
Above embodiments of the present invention are explained in detail, but the invention is not restricted to above-mentioned embodiment, in the ken that described technical field those of ordinary skill possesses, various amendment can also be made under the prerequisite not departing from present inventive concept.These are all not creative amendments, as long as be all subject to the protection of patent law in right of the present invention.
Claims (10)
1. one kind without chrome tanning lamb skin clothing leather preparation technology, comprise the following steps (from sour skin scytoblastema, the addition of each operation additive with the quality of sour skin for benchmark): degreasing eases back, pickling eases back, tanning, main degreasing, water squeezing retanning and water squeezing dyeing, it is characterized in that: the described degreasing liquor ratio in step that eases back is 100%, add the grease-removing agent of 3.0-4.0% and the Industrial Salt of 10-12%, pH is 6.0-6.2, temperature is 25-28 DEG C, the degreasing time of easing back is 90-120min, the described pickling liquor ratio in step that eases back is 100-200%, add the sulfuric acid of 1.0-1.3% and the Industrial Salt of 10-13%, pH is 2.0-2.5, temperature is 25-26 DEG C, the pickling time of easing back is 120-130min, the tanning agent adopted in described tanning step comprises aluminum tanning agent and glutaraldehyde tanning agent, pH scope divides three phases, early stage is 3.0-3.2, sodium formiate and sodium bicarbonate adjustment is added by first time, mid-term is 3.5-3.6, add sodium formiate by second time to regulate, later stage is 4.0-4.5, add sodium bicarbonate by second time to regulate, temperature is 33-35 DEG C, in described main defatting step, liquor ratio is 100%, add the oxalic acid of 1.0-1.2% and the grease-removing agent of 1.0-1.5%, pH is 3.2-3.4, temperature is 50-52 DEG C, degreasing time is 60-65min, composite tanning agent is adopted in described water squeezing retanning step, liquor ratio is 150%, pH is 6.2-6.5, described water squeezing retanning temperature is 32-35 DEG C, in described water squeezing staining procedure, liquor ratio is 100%, pH is 3.8-4.0, the temperature of described water squeezing dyeing is 50-52 DEG C.
2. according to claim 1 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: in described tanning step, first regulate pH to 3.0-3.2 by the sodium bicarbonate of the sodium formiate and 0.5-1.0% that add 1.0-1.2%, stir 90-100min, add the aluminum tanning agent of 2.0-4.0% and the glutaraldehyde tanning agent of 6.0-9.0% again, the sodium formiate being added 1.0-1.2% by second time regulates pH to be 3.5-3.8, stir 270-300min, then other compositions of tanning are added, add fatting agent successively, antioxidant, tannin, iron powder and mould inhibitor, the total amount of described tanning ancillary component is 7.5-8.0%, stir 200-250min, adding sodium bicarbonate finally by second time regulates pH to be 4.0-4.5, be warming up to 32-33 DEG C, stir 300-350min.
3. according to claim 2 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: described glutaraldehyde tanning agent adds at twice, be 3.0-3.5% at every turn, interval 60-80min.
4. according to claim 2 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: in described tanning ancillary component, fatting agent is 0.5-1.0%, antioxidant is 1.0-1.2%, add rear stirring 10-15min, add the tannin of 6.0-6.5%, divide equally three times to add, every minor tick 30-35min, finally adds the iron powder of 0.2-0.3% and the mould inhibitor of 0.1-0.2%, stirs 30-35min.
5. according to claim 2 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: the amount that described sodium bicarbonate adds is 1.5-2.0%, be divided into five times and add, every minor tick 25-30min.
6. according to claim 1 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: carry out drum after described tanning step successively and take that horse leaves standstill, setting-out gets rid of soft, split and shaving deburring step, controlling leather bilayer thickness in described split step is 1.4-1.6mm, and the bilayer thickness controlling described leather in described shaving step is 1.2-1.3mm.
7. according to claim 1 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: the composite tanning agent first adding 4.5-5.0% in described water squeezing retanning step, stir 120-130min, add retanning ancillary component again, comprise the retanning modifying agent of the surfactivity defrosting compound of 1.0-1.5%, the vulcanization accelerator of 2.0-2.5% and 2.0-2.2%, stir 150-180min, the sodium bicarbonate finally adding 2.0-2.5% regulates pH to 6.2-6.5, stirs 60-80min.
8. according to claim 7 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: the composite tanning agent adopted in described water squeezing retanning step comprises the acrylic resin of the glutaraldehyde tanning agent of 1.5-1.8%, the improvement Caesalpinia spinosaKuntze vegetable tanning agent of 1.0-1.2% and 2.0-2.4%.
9. according to claim 1 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: first add dyestuff in described water squeezing staining procedure and add dyeing ancillary component again, comprise the dispersion agent of 1.0-1.4% and the migration inhibitor of 4.0-6.0%, finally add the sulfited fish oil of 2.0-2.5% as fatting agent, finally add the first acid for adjusting pH of 1.2-1.4% to 3.8-4.0, stir 120-150min.
10. according to claim 1 a kind of without chrome tanning lamb skin clothing leather preparation technology, it is characterized in that: carry out extension after described water squeezing staining procedure and dry in the air and get rid of soft, color spray and draw soft, described color spray operation and describedly draw soft operation to hocket, carries out altogether three groups of color sprays and draws soft operation.
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| CN201610050187.5A CN105567886B (en) | 2016-01-26 | 2016-01-26 | One kind is without chrome tanning sheepskin clothing leather preparation technology |
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| CN201610050187.5A CN105567886B (en) | 2016-01-26 | 2016-01-26 | One kind is without chrome tanning sheepskin clothing leather preparation technology |
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| CN105567886A true CN105567886A (en) | 2016-05-11 |
| CN105567886B CN105567886B (en) | 2017-12-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106544451A (en) * | 2016-12-07 | 2017-03-29 | 兴业皮革科技股份有限公司 | A kind of method that inferior grade wet blue leather is become into high-grade white wet leather |
| CN110628968A (en) * | 2019-10-26 | 2019-12-31 | 辛集市凌爵皮革有限责任公司 | Processing technology of chrome-free tanning of sheep leather, sheep white wet leather and sheep leather |
| CN114672598A (en) * | 2022-04-02 | 2022-06-28 | 焦作隆丰皮草企业有限公司 | Chrome-free tanning sheepskin clothing leather and chrome-free tanning method of sheepskin clothing leather |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106544451A (en) * | 2016-12-07 | 2017-03-29 | 兴业皮革科技股份有限公司 | A kind of method that inferior grade wet blue leather is become into high-grade white wet leather |
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| CN110628968B (en) * | 2019-10-26 | 2021-09-24 | 辛集市凌爵皮革有限责任公司 | Processing technology of chrome-free tanning of sheep leather, sheep white wet leather and sheep leather |
| CN114672598A (en) * | 2022-04-02 | 2022-06-28 | 焦作隆丰皮草企业有限公司 | Chrome-free tanning sheepskin clothing leather and chrome-free tanning method of sheepskin clothing leather |
| CN114672598B (en) * | 2022-04-02 | 2024-01-19 | 隆丰革乐美时尚有限公司 | Chrome-free tanned sheepskin clothing leather and chrome-free tannage method thereof |
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| CN105567886B (en) | 2017-12-19 |
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