CN103290148B - Process for making goat denim line simulated upper leather - Google Patents
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- CN103290148B CN103290148B CN201310233140.9A CN201310233140A CN103290148B CN 103290148 B CN103290148 B CN 103290148B CN 201310233140 A CN201310233140 A CN 201310233140A CN 103290148 B CN103290148 B CN 103290148B
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Abstract
The invention aims to provide a process for making goat denim line simulated upper leather. The process specifically comprises the following flows in sequence: soaking, fleshing, painting with lime, dehairing, liming, deliming, softening, pickling, tanning, blue rawhide lot grouping, wringing, shaving, re-tanning and dyeing, secondary wringing, vacuumizing, hang airing, water returning, vibrating staking, setting out, toggling, trimming, buffing and finishing. The process has the beneficial effects that proper and moderate liming aids are selected to promote the limed hide to swell moderately, so that the tear strength of the hide is improved, the growth lines and back lines of the rawhide are completely unfolded and the grain side is flat and fine, thus increasing the leather yield; and the location difference of the hide body is reduced, the plumpness of the whole hide is improved and the hide body can be moistened.
Description
technical field:
The present invention relates to a kind of goat and imitate cowboy's line upper leather manufacture craft.
background technology:
China is the maximum footwear producing country in the whole world, export State and country of consumption, and it is the first quantitatively to occupy the whole world, but compared with making the country prosperous with the shoemaking such as Italian, French, the research and development of footwear material, product design, product performance and quality scale also exists very large gap.The quality scale of footwear is the comprehensive embodiment of product design, durability, snugness of fit, safety performance and ecological, environmental protective performance etc.
Upper leather is the starting material making shoes, is making the surface of shoes, and the raw material of upper leather is a lot, has corium upper leather, PU upper leather, PVC upper leather etc.Corium upper leather generally has ox-hide, sheepskin, pigskin, also has horse skin, snakeskin etc.The leather shoes with the high-grade goat upper leather processing that kishke feel, quality are soft, comfortable and easy to wear, sanitation performance is good are adopted more and more to be subject to the favor of consumers in general.
summary of the invention:
The present invention aims to provide a kind of goat and imitates cowboy's line upper leather manufacture craft, makes the goat upper leather for shoes after processing more be suitable for the making of high-grade vamp.
Concrete technology flow process is followed successively by:
Immersion, fleshing, bag ash, depilation, liming, deliming, softening, pickling, tanning, blue skin batching, water squeezing, shaving, mix that dyeing, secondary water squeezing, vacuum, extension dry in the air again, backwater, soft, the stretching, extension of shaking, toggling, deburring, buffing, covering with paint;
Wherein, immersion: with domestic Han kou goat skui for material, with the water of 300 times of tare weights of 18-22 DEG C, immersion equipment rotating speed 3-4 rev/min; Time 18-22 hour; Add sanitas and Soaking, rotate 1 hour, stop 1 hour, often stop to rotate 5-10 minute in 1 hour later, total rotation time, at 3 hours, rotates 15 minutes before going out drum continuously;
Fleshing: remove subcutis with fleshing machine;
Bag ash: solution technical pure sodium sulphite being made into 15-50g/L adds lime furnishing 15-30Be ' paste, uniform application is on the flesh noodles returning to fresh hide state skin, and flesh to flesh is piled up to about 40cm height, stacks to hair root loosening at 18-22 DEG C;
Depilation: by hand in foreskin version or push away mao machine and carry out one by one pushing away hair to lose hair or feathers;
Retanning is dyeed: step is as follows:
(1) pickling: mix up that 40 DEG C of 1:200 liquor ratio water add permeate agent, oxalic acid turns 40 points of drainings washings, the PH to blue skin is 3.4-3.6;
(2) retanning: renew body lotion, mix up the water of 36 DEG C of 150 times of tare weights, the acidproof oil that the surface adding tare weight 1% is moistened turns 15 minutes, the chromium aluminium zirconium synthetic tanning agent adding tare weight 3% turns 30 points, the chromium powder adding tare weight 4% turns 60 minutes and then adds sodium formiate and turns 20 minutes, gradation adds sodium bicarbonate and turns 60 minutes and slowly promote pH value, and make pH value be 3.9-4.0, the both sexes vinylformic acid adding tare weight 1% turns 30 minutes; Finally mend one times turn, 40 DEG C of water and within 10 minutes, stop drum 10h, finally turn 10 minutes water drain wash cleans;
(3) neutralize: in application, slowly promote pH value with tannin, then improve PH to 5.1-5.3 with sodium bicarbonate;
(4) fill: in the blue skin of becoming reconciled through fully washing, renew bath and add small molecules acrylate resin tanning agent and rotate 30 points, add grease, then dispersion tanning agent, tannin extract is added, resin extender turns 60 points, then adds dyestuff and rotates 30 points, is then warming up to 45 DEG C and adds formic acid and turn 30 points to PH4.0;
(5) stuffing: in new body lotion, first adds vegetable protein and turns 20 minutes, and fatting agent adds rotation 40 minutes;
(6) surface oil: add surperficial cation oil and turn 20 minutes before going out drum, water drain washes out drum.
Water squeezing: with the skin that batching is good smooth pass through wringing machine;
Shaving: fall rotary drum with the skin after water squeezing through overdrying and add careless chaff and rotate to go out drum for 10 minutes and take mean longitude and cross shaving machine the oil film of flesh noodles is reamed uniformly;
Secondary water squeezing: the skin that retanning is dyeed is extruded skin extended flat by the transmission rod axle of wringing machine and the rotation of felt axle, and moisture is evenly extruded;
Vacuum: with vacuum machine, skin being dried to water content is 48-52%;
Extension dries in the air: utilize 40 DEG C of baking ovens to continue skin to be dried to the water content of 5%-10%;
Backwater: adopt reverse side oil return method, natural oil, permeate agent, water carry out proportioning, backwater 10h;
Cover with paint, lacquer, colour wash, etc.: process is followed successively by 110 DEG C and presses down cowboy's line; Sandpaper grinds slight suede, WATER REPELLENT; Spray oil wax effect layer.
Improve as one, the design parameter of described liming is: adjust liquor ratio: 1:250; Interior temperature: 18-22 DEG C; Time: 18h; Material: lime putty consumption is 10% of tare weight, enzyme-added auxiliary liming agent consumption is the 0.5%-0.8% of tare weight; Operate as follows: throw skin and mix up liquor ratio and temperature, add lime putty and use the 35-45 DEG C of consoluet auxiliary liming agent of hot water stirs in advance, rotate 40 points, stop 1 hour, often stop 1 hour later, turn 5 minutes, total rotation time is 3 hours; Before terminating liming, rotate 20-30 minute continuously.
As further improvement: described deliming: design parameter is: liquor ratio: 1:200; Interior temperature: 25 DEG C; Time: 40 minutes; Chemical materials: the grease-removing agent that the hydrochloric acid that the concentration that consumption is the ammonium sulfate of tare weight 1.5%, consumption is tare weight 0.5% is 36%, consumption are tare weight 0.5%; Step: mix up liquor ratio and Nei Wen, adds ammonium sulfate and grease-removing agent, turns 10 minutes, and then interval adds the cooled hydrochloric acid of dilution for 5 minutes at twice; Finally go out drum and check that cervical incision phenolphthalein indicator leaves 1/4 red heart as terminal.
As further improvement, described softening: concrete operations are as follows: liquor ratio: 1:100; Interior temperature: 36-37 DEG C; Time: 30 minutes-40 minutes; Chemical materials: by tare weight: ammonium sulfate 0.5%, pancreatin (25 times) 0.3%, 1398 proteolytic enzyme (50,000 units/g) 0.1%, penetrating agent JFC 0.3%; Mix up liquor ratio, interior temperature, add required material; Soften to PH=7.9-8.1.
As further improvement, described pickling: operate as follows: liquor ratio 1-100; Interior temperature: 18-22 DEG C; Time: 180 points; Chemical materials: formic acid (concentration 85%) 1.0%, sulfuric acid (concentration 96%) 0.5%, salt 7%; Mix up liquor ratio, interior temperature, with the water of 18-22 DEG C of sour weight 20 times formic acid and sulfuric acid diluted respectively and be cooled to normal temperature; First turn 5 minutes with salt, add formic acid and turn 30 points, slowly add sulfuric acid three times from drum axle sky point, every minor tick 10 minutes, then turn 30 minutes and stop 30 minutes, often stop within 30 minutes, to turn 5 minutes to checking that tetrabromo-mcresolsulfonphthalein cervical incision is entirely yellow later, solution PH is 2.7-2.9, proceeds to tanning processes.
As further improvement, described tanning: have employed few bath chromic tanning, concrete operations are as follows: remove pickling liquid 1/2, add cationic surface oil and turn 30 minutes, add the chromium powder of tare weight 6%, low basicity B=33%, turn 120 minutes to surveying Ts>85, add 60 DEG C of 100 times of water turn 60 minutes to interior temperature be 38 DEG C, the sodium-acetate adding 1% turns 30 points, the sodium bicarbonate of 1% is good by 20 times of water dissolution, evenly be divided into 5 parts, slowly 1 part is added from axis hole every 20 minutes, pH value should be checked after adding the 3rd part, if pH value=3.9, then remaining saleratus liquid no longer adds, if less than 3.9, continue to add saleratus liquid, until PH reaches 3.9, and then turn 60 minutes, add the water of water temperature 50 DEG C to interior temperature 38 DEG C, owse pH value is stabilized in 3.9-4.0, turns 60 minutes, stops drum 10h, rotate 30 minutes, check PH>3.8, interior temperature 38 DEG C, Ts>95, leather is blue-greenish colour, and draining is poured out and taken flat ageing and proceed to next procedure in 1 week.
Present invention process is selected appropriate, and appropriate auxiliary liming agent, impels the expansion of grey pelt appropriateness, improve the tear strength of skin, and make the growth line of raw material skin, ridge line opens completely, grain is flat thin, adds yield of leather; The position decreasing skin body is poor, improves the fullness ratio of whole skin, and skin body can be made to moisten; In scytoblastema arrangement process, make the grain consolidation of skin, uniformity coefficient, the pliability of whole skin are consistent, cover with paint, lacquer, colour wash, etc. the optimization of style, reduce production cost, more natural, environmental protection.
embodiment:
Below by embodiment, technical scheme of the present invention is described in further detail.
A kind of goat imitates cowboy's line upper leather manufacture craft, and concrete operations flow process is as follows:
A kind of goat imitates cowboy's line upper leather manufacture craft, makes the goat upper leather for shoes after processing more be suitable for the making of high-grade vamp.
Concrete technology flow process is followed successively by:
Immersion, fleshing, bag ash, depilation, liming, deliming, softening, pickling, tanning, blue skin batching, water squeezing, shaving, mix that dyeing, secondary water squeezing, vacuum, extension dry in the air again, backwater, soft, the stretching, extension of shaking, toggling, deburring, buffing, covering with paint;
Wherein, immersion: with domestic Han kou goat skui for material, with the water of 300 times of tare weights of 18-22 DEG C, immersion equipment rotating speed 3-4 rev/min; Time 18-22 hour; Add sanitas and Soaking, rotate 1 hour, stop 1 hour, often stop to rotate 5-10 minute in 1 hour later, total rotation time, at 3 hours, rotates 15 minutes before going out drum continuously;
Fleshing: remove subcutis with fleshing machine;
Bag ash: solution technical pure sodium sulphite being made into 15-50g/L adds lime furnishing 15-30Be ' paste, uniform application is on the flesh noodles returning to fresh hide state skin, and flesh to flesh is piled up to about 40cm height, stacks to hair root loosening at 18-22 DEG C;
Depilation: by hand in foreskin version or push away mao machine and carry out one by one pushing away hair to lose hair or feathers;
Liming: design parameter is: adjust liquor ratio: 1:250; Interior temperature: 18-22 DEG C; Time: 18h; Material: lime putty consumption is 10% of tare weight, enzyme-added auxiliary liming agent consumption is the 0.5%-0.8% of tare weight; Operate as follows: throw skin and mix up liquor ratio and temperature, add lime putty and use the 35-45 DEG C of consoluet auxiliary liming agent of hot water stirs in advance, rotate 40 points, stop 1 hour, often stop 1 hour later, turn 5 minutes, total rotation time is 3 hours; Before terminating liming, rotate 20-30 minute continuously.
Deliming: design parameter is: liquor ratio: 1:200; Interior temperature: 25 DEG C; Time: 40 minutes; Chemical materials: the grease-removing agent that the hydrochloric acid that the concentration that consumption is the ammonium sulfate of tare weight 1.5%, consumption is tare weight 0.5% is 36%, consumption are tare weight 0.5%; Step: mix up liquor ratio and Nei Wen, adds ammonium sulfate and grease-removing agent, turns 10 minutes, and then interval adds the cooled hydrochloric acid of dilution for 5 minutes at twice; Finally go out drum and check that cervical incision phenolphthalein indicator leaves 1/4 red heart as terminal.
Softening: concrete operations are as follows: liquor ratio: 1:100; Interior temperature: 36-37 DEG C; Time: 30 minutes-40 minutes; Chemical materials: by tare weight: ammonium sulfate 0.5%, pancreatin (25 times) 0.3%, 1398 proteolytic enzyme (50,000 units/g) 0.1%, penetrating agent JFC 0.3%; Mix up liquor ratio, interior temperature, add required material; Soften to PH=7.9-8.1.
Pickling: operate as follows: liquor ratio 1-100; Interior temperature: 18-22 DEG C; Time: 180 points; Chemical materials: formic acid (concentration 85%) 1.0%, sulfuric acid (concentration 96%) 0.5%, salt 7%; Mix up liquor ratio, interior temperature, with the water of 18-22 DEG C of sour weight 20 times formic acid and sulfuric acid diluted respectively and be cooled to normal temperature; First turn 5 minutes with salt, add formic acid and turn 30 points, slowly add sulfuric acid three times from drum axle sky point, every minor tick 10 minutes, then turn 30 minutes and stop 30 minutes, often stop within 30 minutes, to turn 5 minutes to checking that tetrabromo-mcresolsulfonphthalein cervical incision is entirely yellow later, solution PH is 2.7-2.9, proceeds to tanning processes.
Tanning: have employed few bath chromic tanning, concrete operations are as follows: remove pickling liquid 1/2, add cationic surface oil and turn 30 minutes, add the chromium powder of tare weight 6%, low basicity B=33%, turn 120 minutes to surveying Ts>85, add 60 DEG C of 100 times of water turn 60 minutes to interior temperature be 38 DEG C, the sodium-acetate adding 1% turns 30 points, and the sodium bicarbonate of 1% is good by 20 times of water dissolution, is evenly divided into 5 parts, slowly 1 part is added from axis hole every 20 minutes, should check pH value after adding the 3rd part, if pH value=3.9, then remaining saleratus liquid no longer adds; If less than 3.9, continue to add saleratus liquid, until PH reaches 3.9, and then turn 60 minutes; Add the water of water temperature 50 DEG C to interior temperature 38 DEG C, owse pH value is stabilized in 3.9-4.0, turns 60 minutes, stops drum 10h; Rotate 30 minutes, check PH>3.8, interior temperature 38 DEG C, Ts>95, leather is blue-greenish colour, and draining is poured out and taken flat ageing and proceed to next procedure in 1 week.
Water squeezing: with the skin that batching is good smooth pass through wringing machine;
Shaving: fall rotary drum with the skin after water squeezing through overdrying and add careless chaff and rotate to go out drum for 10 minutes and take mean longitude and cross shaving machine the oil film of flesh noodles is reamed uniformly;
Retanning is dyeed: step is as follows:
(1) pickling: mix up that 40 DEG C of 1:200 liquor ratio water add permeate agent, oxalic acid turns 40 points of drainings washings, the PH to blue skin is 3.4-3.6;
(2) retanning: renew body lotion, mix up the water of 36 DEG C of 150 times of tare weights, the acidproof oil that the surface adding tare weight 1% is moistened turns 15 minutes, the chromium aluminium zirconium synthetic tanning agent adding tare weight 3% turns 30 points, the chromium powder adding tare weight 4% turns 60 minutes and then adds sodium formiate and turns 20 minutes, gradation adds sodium bicarbonate and turns 60 minutes and slowly promote pH value, and make pH value be 3.9-4.0, the both sexes vinylformic acid adding tare weight 1% turns 30 minutes; Finally mend one times turn, 40 DEG C of water and within 10 minutes, stop drum 10h, finally turn 10 minutes water drain wash cleans;
(3) neutralize: in application, slowly promote pH value with tannin, then improve PH to 5.1-5.3 with sodium bicarbonate;
(4) fill: in the blue skin of becoming reconciled through fully washing, renew bath and add small molecules acrylate resin tanning agent and rotate 30 points, add grease, then dispersion tanning agent, tannin extract is added, resin extender turns 60 points, then adds dyestuff and rotates 30 points, is then warming up to 45 DEG C and adds formic acid and turn 30 points to PH4.0;
(5) stuffing: in new body lotion, first adds vegetable protein and turns 20 minutes, and fatting agent adds rotation 40 minutes;
(6) surface oil: add surperficial cation oil and turn 20 minutes before going out drum, water drain washes out drum.
Secondary water squeezing: the skin that retanning is dyeed is extruded skin extended flat by the transmission rod axle of wringing machine and the rotation of felt axle, and moisture is evenly extruded;
Vacuum: with vacuum machine, skin being dried to water content is 48-52%;
Extension dries in the air: utilize 40 DEG C of baking ovens to continue skin to be dried to the water content of 5%-10%;
Backwater: adopt reverse side oil return method, natural oil, permeate agent, water carry out proportioning, backwater 10h;
Cover with paint, lacquer, colour wash, etc.: process is followed successively by 110 DEG C and presses down cowboy's line; Sandpaper grinds slight suede, WATER REPELLENT; Spray oil wax effect layer.
Goat after above-mentioned steps completes imitates cowboy's line upper leather the key technical indexes:
Check conclusion: above-mentioned test rating all meets QB/T 1873-2010 standard specification.
Specific embodiment described herein is only to the present invention's explanation for example.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. goat imitates cowboy's line upper leather manufacture craft, it is characterized in that concrete technology flow process is followed successively by: immersion, fleshing, bag ash, depilation, liming, deliming, softening, pickling, tanning, blue skin batching, water squeezing, shaving, retanning dyeing, secondary water squeezing, vacuum, extension are dried in the air, backwater, soft, the stretching, extension of shaking, toggling, deburring, buffing, covering with paint;
Wherein, immersion: with domestic Han kou goat skui for material, with the water of 300 times of tare weights of 18-22 DEG C, immersion equipment rotating speed 3-4 rev/min; Time 18-22 hour; Add sanitas and Soaking, rotate 1 hour, stop 1 hour, often stop to rotate 5-10 minute in 1 hour later, total rotation time, at 3 hours, rotates 15 minutes before going out drum continuously;
Fleshing: remove subcutis with fleshing machine;
Bag ash: solution technical pure sodium sulphite being made into 15-50g/L adds lime furnishing 15-30Be ' paste, uniform application is on the flesh noodles returning to fresh hide state skin, and flesh to flesh is piled up to 40cm height, stacks to hair root loosening at 18-22 DEG C;
Depilation: by hand in foreskin version or push away mao machine and carry out one by one pushing away hair to lose hair or feathers;
Retanning is dyeed: step is as follows:
(1) pickling: mix up that 40 DEG C of 1:200 liquor ratio water add permeate agent, oxalic acid turns 40 points of drainings washings, the pH to blue skin is 3.4-3.6;
(2) retanning: renew body lotion, mix up the water of 36 DEG C of 150 times of tare weights, the acidproof oil that the surface adding tare weight 1% is moistened turns 15 minutes, the chromium aluminium zirconium synthetic tanning agent adding tare weight 3% turns 30 points, the chromium powder adding tare weight 4% turns 60 minutes and then adds sodium formiate and turns 20 minutes, gradation adds sodium bicarbonate and turns 60 minutes and slowly promote pH value, and make pH value be 3.9-4.0, the both sexes vinylformic acid adding tare weight 1% turns 30 minutes; Finally mend one times turn, 40 DEG C of water and within 10 minutes, stop drum 10h, finally turn 10 minutes water drain wash cleans;
(3) neutralize: in application, slowly promote pH value with tannin, then improve pH to 5.1-5.3 with sodium bicarbonate;
(4) fill: in the blue skin of becoming reconciled through fully washing, renew bath to add small molecules acrylate resin tanning agent and rotate 30 points, add grease, then dispersion tanning agent, tannin extract is added, resin extender turns 60 points, then add dyestuff and rotate 30 points, be then warming up to 45 DEG C and add formic acid and turn 30 points to pH 4.0;
(5) stuffing: in new body lotion, first adds vegetable protein and turns 20 minutes, and fatting agent adds rotation 40 minutes;
(6) surface oil: add surperficial cation oil and turn 20 minutes before going out drum, water drain washes out drum;
Water squeezing: with the skin that batching is good smooth pass through wringing machine;
Shaving: fall through overdrying with the skin after water squeezing, rotary drum adds careless chaff and rotates within 10 minutes, to go out drum and take flat, through shaving machine, the oil film of flesh noodles is reamed uniformly;
Secondary water squeezing: the skin that retanning is dyeed is extruded skin extended flat by the transmission rod axle of wringing machine and the rotation of felt axle, and moisture is evenly extruded;
Vacuum: with vacuum machine, skin being dried to water content is 48-52%;
Extension dries in the air: utilize 40 DEG C of baking ovens to continue skin to be dried to the water content of 5%-10%;
Backwater: adopt reverse side oil return method, natural oil, permeate agent, water carry out proportioning, backwater 10h;
Cover with paint, lacquer, colour wash, etc.: process is followed successively by 110 DEG C and presses down cowboy's line; Sandpaper grinds slight suede, WATER REPELLENT; Spray oil wax effect layer.
2. goat according to claim 1 imitates cowboy's line upper leather manufacture craft, it is characterized in that, the design parameter of described liming is: adjust liquor ratio: 1:250; Interior temperature: 18-22 DEG C; Time: 18h material: lime putty consumption is 10% of tare weight, enzyme-added auxiliary liming agent consumption is the 0.5%-0.8% of tare weight; Operate as follows: throw skin and mix up liquor ratio and temperature, add lime putty and use the 35-45 DEG C of consoluet auxiliary liming agent of hot water stirs in advance, rotate 40 points, stop 1 hour, often stop 1 hour later, turn 5 minutes, total rotation time is 3 hours; Before terminating liming, rotate 20-30 minute continuously.
3. goat according to claim 1 imitates cowboy's line upper leather manufacture craft, it is characterized in that, described deliming design parameter is: liquor ratio: 1:200; Interior temperature: 25 DEG C; Time: 40 minutes; Chemical materials: the grease-removing agent that the hydrochloric acid that the concentration that consumption is the ammonium sulfate of tare weight 1.5%, consumption is tare weight 0.5% is 36%, consumption are tare weight 0.5%; Step: mix up liquor ratio and Nei Wen, adds ammonium sulfate and grease-removing agent, turns 10 minutes, and then interval adds the cooled hydrochloric acid of dilution for 5 minutes at twice; Finally go out drum and check that cervical incision phenolphthalein indicator leaves 1/4 red heart as terminal.
4. goat according to claim 1 imitates cowboy's line upper leather manufacture craft, it is characterized in that, described softening: concrete operations are as follows: liquor ratio: 1:100; Interior temperature: 36-37 DEG C; Time: 30 minutes-40 minutes; Chemical materials: by tare weight: ammonium sulfate 0.5%, pancreatin 25 times 0.3%, 1398 proteolytic enzyme 50,000 units/g0.1%, penetrating agent JFC 0.3%; Mix up liquor ratio, interior temperature, add required material; Soften to pH=7.9-8.1.
5. goat according to claim 1 imitates cowboy's line upper leather manufacture craft, it is characterized in that, described pickling: operate as follows: liquor ratio 1-100; Interior temperature: 18-22 DEG C; Time: 180 points; Chemical materials: the formic acid 1.0% of concentration 85%, the sulfuric acid 0.5% of concentration 96%, salt 7%; Mix up liquor ratio, interior temperature, with the water of 18-22 DEG C of sour weight 20 times, formic acid and sulfuric acid are diluted respectively; First turn 5 minutes with salt, add formic acid and turn 30 points, slowly add sulfuric acid three times from drum axle sky point, every minor tick 10 minutes, then turn 30 minutes and stop 30 minutes, often stop within 30 minutes, to turn 5 minutes to checking that tetrabromo-mcresolsulfonphthalein cervical incision is entirely yellow later, pH value of solution is 2.7-2.9, proceeds to tanning processes.
6. goat according to claim 1 imitates cowboy's line upper leather manufacture craft, it is characterized in that, described tanning: have employed few bath chromic tanning, concrete operations are as follows: remove pickling liquid 1/2, add cationic surface oil and turn 30 minutes, add the chromium powder of tare weight 6%, basicity B=33%, turn 120 minutes to surveying Ts>85, add 60 DEG C of 100 times of water turn 60 minutes to interior temperature be 38 DEG C, the sodium-acetate adding 1% turns 30 points, the sodium bicarbonate of 1% is good by 20 times of water dissolution, evenly be divided into 5 parts, slowly 1 part is added from axis hole every 20 minutes, pH value should be checked after adding the 3rd part, if pH value=3.9, then remaining saleratus liquid no longer adds, if less than 3.9, continue to add saleratus liquid, until pH reaches 3.9, and then turn 60 minutes, add the water of water temperature 50 DEG C to interior temperature 38 DEG C, owse pH value is stabilized in 3.9-4.0, turns 60 minutes, stops drum 10h, rotate 30 minutes, check pH>3.8, interior temperature 38 DEG C, Ts>95, leather is blue-greenish colour, and draining is poured out and taken flat ageing and proceed to next procedure in 1 week.
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| CN104789714B (en) * | 2015-03-23 | 2017-05-31 | 浙江金鑫皮革有限公司 | A kind of Sheep Skin Upper Leather manufacture craft |
| CN104774980B (en) * | 2015-03-23 | 2017-03-08 | 浙江金鑫皮革有限公司 | A kind of goat upper leather for shoes processing technology |
| CN104846127A (en) * | 2015-05-06 | 2015-08-19 | 浙江力源皮业有限公司 | Leather manufacture and production process thereof |
| CN105543426A (en) * | 2016-01-26 | 2016-05-04 | 浙江中辉皮草有限公司 | Production technology for enabling rabbit skin to imitate Persian lamb |
| CN106636487B (en) * | 2016-08-15 | 2019-03-15 | 孟宪君 | Injection formula method for leather-making |
| CN107858458A (en) * | 2017-09-29 | 2018-03-30 | 安徽鼎恒皮件制品有限公司 | A kind of processing technology of cow leather |
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| CN111321258A (en) * | 2020-02-19 | 2020-06-23 | 漳州信德皮革有限公司 | Production process of leather |
| CN111763782B (en) * | 2020-08-11 | 2021-11-26 | 湖南银河制革有限公司 | Preparation process of white super-soft environment-friendly leather |
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| EP0362134A2 (en) * | 1988-09-28 | 1990-04-04 | Ciba-Geigy Ag | Leather treating agent |
| CN1109101A (en) * | 1994-12-30 | 1995-09-27 | 成都钜星皮革公司 | Process for tie-dyeing pig leather with sheep leather appearance |
| WO2001031067A1 (en) * | 1999-10-29 | 2001-05-03 | Commissariat A L'energie Atomique | Method for tanning skins or materials containing collagen, with a dense fluid under pressure |
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