CN103290152B - Hogskin suede vamp leather after-tanning wet finishing method - Google Patents
Hogskin suede vamp leather after-tanning wet finishing method Download PDFInfo
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- CN103290152B CN103290152B CN201310233109.5A CN201310233109A CN103290152B CN 103290152 B CN103290152 B CN 103290152B CN 201310233109 A CN201310233109 A CN 201310233109A CN 103290152 B CN103290152 B CN 103290152B
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Abstract
The invention discloses a hogskin suede vamp leather after-tanning wet finishing method which comprises the following steps: squeezing of hogskin vamp blue wet leather, primary shaving (flesh side), secondary light shaving (grain surface), wet milling, weighing, rewetting, water washing, retanning, water washing, neutralizing, water washing, primary greasing, filling, water washing, bulging, primary drying, secondary drying, remoistening, softening by vibration, dry milling, weighing, tempering, water washing, dyeing, secondary greasing, top dyeing, water washing, bulging, drying, remoistening, softening by throwing, (other steps), scaling, and warehousing. The finished product has the advantages of thin and short fuzz and no obvious pores, and is basically uniform; and the leather is plump and soft, has the advantages of high thickness, favorable fastness and high yield.
Description
Technical field
The invention belongs to leather tanning field, particularly the positive suede upper leather of a kind of pigskin wet ornamenting working method after tanning.
Background technology
The positive suede upper leather of pigskin (market is also known as pig Ba Ge) is processed by pigskin tannin.On market, the pig Ba Ge requirement for high-quality is: pore is not obvious, and fine hair is fine and closely woven, substantially evenly; Thickness is at more than 0.9mm, and general thickness is 1.2-1.5mm; The plentiful softness of leather body, fastness is good; Position difference is little, and deburring is few, and yield of leather is high.
The weave construction feature that pigskin is main:
(1) grain is coarse, and pig hair is generally three at surface, and isosceles triangle arranges.Pore, in surface exit flare, seems thick especially.Grain nipple projection is obvious, and rill is comparatively dark, so seem that grain is coarse;
(2) position difference is large, and position difference shows as greatly: difference in thickness is large, fibrage difference is large and grain difference is large;
(3) difference in thickness: buttocks, the belly difference in thickness of pigskin can change from 4.5mm-1.0mm;
(4) fibrage difference: the stern back fibrous bundle of pigskin is sturdy, is cross type woven, closely, limit belly fibrous bundle is very thin in braiding, and mostly be waviness braiding, braiding is loose, and neck braiding falls between;
(5) grain difference: the pore thickness of buttocks part of pighide, neck and belly and density, the grain rill depth are all obviously different.Generally, comparatively belly is flat thin for buttocks grain;
In view of the particular tissues constructional feature of above-mentioned pigskin, so the pig Ba Ge that will process high-quality necessarily keeps on improving in technique, process program is formulated according to pigskin histological characteristic, the detrimentally affect reducing that pigskin grain is coarse, position difference is large etc. and bring, the position focusing on reducing pigskin is poor, control the buffing degree of depth, make finished leather feel, fine hair even as far as possible.
Pig Ba Ge because be velour, so its production only tan strictly speaking before beam house, tanning process and wet finishing workshop section three workshop sections after tanning.Focus, for the processing of pig Ba Ge, is concentrated on Rou Qian workshop section and tanning process by forefathers, Special attention will be given to degreasing, depilation liming, softening pickling, importance in conjunction with operations such as tannings, and the arrangement of the technical process of Rou Qian workshop section and tanning process.For wet finishing workshop section after tanning, only pay close attention to the several single operation of buffing, dyeing and stuffing to the impact of pig Ba Ge quality, a global design, arrangement are lacked, so it produces pig Ba Ge often easily occur following problem to each inter process of wet finishing workshop section after tanning:
The buffing degree of depth is large, hide thickness low LCL, and generally between 0.9-1.2mm, fastness is inadequate; Fennel is obvious, and fine hair is different in size, uneven; The inclined plate of leather body is hard; Position difference is large, and deburring is serious, the problems such as yield of leather is low.
Summary of the invention
The object of the invention is the shortcoming and defect existed to overcome prior art, and it is carefully short to provide one to process finished product fine hair, substantially evenly, without obvious pore; The plentiful softness of leather body; Thickness is thicker, and fastness is good; The positive suede upper leather of a kind of pigskin of the high-quality pig Ba Ge that yield of leather is higher is wet ornamenting working method after tanning.
For achieving the above object, technical scheme of the present invention comprises following operation:
Pigskin vamp wet blue leather → water squeezing → mono-time shaving (cutting the flesh noodles) → light shaving of secondary (cutting grain) → wet-milling → weigh → rewetting → washing → retanning → washing → neutralization → washing → mono-time stuffing, filling → wash, go out the drum → primary drying → redrying → soft → → backwater → washing → dyeing of dry grinding → weigh that gets damp again → shake, secondary stuffing → (top dye) → wash, go out drum → drying → soft → (other operations) that get damp again → fall → row chi, warehouse-in
(1) pigskin vamp wet blue leather: to select through chrome tanning agent tanning or chrome tanning agent and other tanning agents in conjunction with tanning for processing the leather of pig Ba Ge;
(2) water squeezing: normal process steps;
(3) shavings: cut flesh noodles, thickness is with the many 0.1-0.4mm of finished product pig Ba Ge thickness;
(4) the light shaving of secondary: cut grain, cuts entirely to open, and being stretched to cut by grain is broked into suitable, does not change to some extent thickness;
(5) wet-milling: wet blue leather buffing, with 80-200 emery cloth, demand perfection to open is ground to, and destroys grain;
(6) weigh, rewetting, washing, retanning, washing and neutralization, in general and between pH to 5.0-6.5;
(7) wash;
(8) stuffings, filling: a small amount of stuffing, fatting agent total amount accounts for the 3-8% of tare weight; The vegetable tanning agent that the stuffing later stage adds tare weight 2-5% is filled; This step stuffing amount by quality ratio;
(9) wash, go out drum;
(10) primary drying: adopt vacuum-drying or paste drying that moisture in skin is down to 30-40%, by quality ratio, requires that grain is flat thin;
(11) redrying: employing nature extension dries in the air or drying tunnel extension dries in the air is down to 14-18% by moisture in skin, by quality ratio;
(12) get damp again: make tare weight water tariff collection 30% ± 5, by quality ratio;
(13) shake soft: adopt oscillating staking machine process, softness is advisable with applicable buffing;
(14) dry grind: crust leather is dry grinded, adopt 150-400 emery cloth, gradation buffing, emery cloth change from coarse to fine, first grind flesh noodles, then abrasive particle face, during abrasive particle face, the direct buffing of the large buffing machine of direct use, or first with little buffing machine edging belly and neck neck, then adopt the method for large buffing machine whole buffing, require without obvious pore, fine hair is carefully short, substantially evenly.
(15) weigh, backwater and washing;
(16) dyeing, secondary stuffing, secondary stuffing will consider the part stuffing amount added in deduction stuffing operation; Total stuffing amount is according to hide requirement, and fatting agent type and effect have difference, and general pig Ba Ge stuffing total amount is change between 5-15%.Secondary stuffing is total stuffing amount and deducts a stuffing amount.
(17) top contaminates (for dark color leather, light color leather can omit), washes and go out drum;
(18) dry: adopt vacuum-drying and extension to dry dryly to combine, paste drying dries dry combining with extension, or extension to dry dry;
(19) get damp again: make tare weight water tariff collection about 30%, by quality ratio
(20) soft, row's chi and warehouse-in is fallen.
Further setting be described step (20) fall between soft row's chi also have other techniques, this other technique for spray hand feeling agent and/or spray dyestuff.
For obtaining even, careful fine hair, the present invention adopts a wet-milling, the buffing mode combined that vegetable tanning agent is filled and secondary is dry grinded.Wet-milling makes the basic napping of grain; Add vegetable tanning agent during a stuffing, make grain be conducive to buffing; Gradation buffing during dry grinding, first fine grinding after corase grind, makes grain fine hair even, careful.
For obtaining the fine hair outward appearance without obvious pore, need to accomplish the buffing degree of depth be the trumpet type of pore reduce place.Pigskin grain is coarse, and pore is at surface exit flare opening shape.If directly buffing, grind shallow, hydraucone inner wall smooth is without fine hair, and pore clearly; Grind dark, pore is not obvious, but variation in thickness is large, affects finished leather fastness.The mode that the present invention adopts secondary shaving (cutting grain) to combine with buffing.When cutting grain, obtain more smooth grain, then buffing by shear action, easily control the buffing degree of depth, buffing reduces place to pore trumpet type.
For obtaining soft and full pig Ba Ge, the present invention adopts a stuffing, dry arrangement, secondary stuffing, the dry processing mode arranged.Fatliquoring in multi-step is conducive to fatting agent and is uniformly distributed at each position, improves pliability and the fullness ratio of finished leather.Multi stage drying is conducive to finished leather and has good feel and performance.
In order to obtain more than thickness 0.9mm, being generally 1.2-1.5mm, the pig Ba Ge that fastness is good, needing the change total amount to thickness controlling shaving and buffing.Pigskin grain is coarse, and grain nipple projection is obvious, and rill is comparatively dark, and pore is in surface exit flare.General working method adopts a simple shaving and repeatedly buffing mode is to change thickness, and in order to pursue fine hair quality and limit belly napping during buffing, often the buffing degree of depth is comparatively dark, causes hide thickness obviously to decline, affects the fastness of finished leather.The mode that the present invention adopts shaving (cutting flesh noodles), a secondary shaving (cutting grain) to combine with buffing.One time shaving (cutting flesh noodles) gives hide one basic uniform thickness; Secondary shaving (cutting grain) does not change to thickness, mainly cuts brokenly entirely opening the stretching of pigskin grain; Wet-milling and dry grinding combine, mainly napping effect, change little to thickness.While realizing good thickness, finished leather position difference is little, and yield of leather is high.
Below in conjunction with embodiment, the present invention is described further.
Embodiment
Below by embodiment, the present invention is specifically described; only be used to further illustrate the present invention; can not be interpreted as limiting the scope of the present invention, the technician in this field can make some nonessential improvement and adjustment according to the content of foregoing invention to the present invention.
embodiment 1(light color pig Ba Ge)
Pigskin vamp wet blue leather → water squeezing → mono-time shaving (cutting the flesh noodles) → light shaving of secondary (cutting grain) → wet-milling → weigh → rewetting → washing → retanning → washing → neutralization → washing → mono-time stuffing, filling → wash, go out the drum → primary drying → redrying → soft → → backwater → washing → dyeing of dry grinding → weigh that gets damp again → shake, secondary stuffing → wash, go out drum → drying → soft → (other operations) that get damp again → fall → row chi, warehouse-in
(1) pigskin vamp wet blue leather: through chrome tanning agent tanning for processing the leather of pig Ba Ge.
(2) water squeezing: make hide water content be 45%-50%
(3) shavings (cutting flesh noodles): shaving thickness 1.5mm.
(4) the light shaving of secondary (cutting grain): cut grain, stretches grain and cuts brokenly, cuts for complete.
(5) wet-milling: with No. 80 emery cloth buffings, complete is ground to, destroys grain.
(6) weigh.As later raw materials used benchmark, percentage.
(7) rewetting: tare weight 400% water, temperature 35 degree, adds 0.1% formic acid, 0.2% grease-removing agent, rotates 45min, control water.
(8) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(9) retanning: tare weight 100% water, temperature 35 degree, adds 4% chrome tanning agent, rotates 90min, adds 1% sodium formiate, rotates 30min, adds 0.8% sodium bicarbonate, rotates 90min, pH=4.0-4.2.Turn and stop combination and spend the night, control water.
(10) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(11) neutralize: tare weight 200% water, temperature 35 degree, adds in 1.5% and tannin, 1% sodium formiate, rotates 30min, adds 0.8% sodium bicarbonate, rotates 90min, pH=5.0, control water.
(12) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(13) stuffings, filling: tare weight 150% water, temperature 45 degree, adds 3% fatting agent, rotates 30min, adds 4% vegetable tanning agent, rotates 30min, adds 0.8% formic acid, rotates 30min, pH=3.8.Control water.
(14) wash, go out drum: tare weight 400% water, temperature normal temperature, rotate 10min, control water.In triplicate, drum is gone out.
(15) primary drying: adopt moisture in vacuum-drying to skin to be down to 40%.
(16) redrying: adopt drying tunnel to hang to dry in the air moisture in skin is down to 18%.
(17) get damp again: water spray, leave standstill, make tare weight water tariff collection about 30%.
(18) shake soft: adopt oscillating staking machine process.
(19) dry grind: crust leather is dry grinded, first with No. 150 emery cloth mill flesh noodles, then use No. 150 emery cloth abrasive particle faces, finally use No. 250 emery cloth abrasive particle faces twice, without obvious pore, fine hair is carefully short, substantially evenly.
(20) weigh: weightening finish 300%, as later raw materials used benchmark, percentage.
(21) backwater: tare weight 400% water, temperature 35 degree, adds 0.5% ammoniacal liquor, 0.05% permeate agent, turns and stops combination and spend the night, control water.
(22) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(23) dyeing, secondary stuffing: tare weight 150% water, temperature 40 degree, adds 0.5% dyestuff, rotates 30min, adds 5% fatting agent, rotate 30min, add 100% hot water, make interior temperature be 45-50 degree, rotate 30min, add 0.5% formic acid, rotate 30min, pH=3.8, control water.
(24) wash, go out drum: tare weight 400% water, temperature normal temperature, rotate 10min, control water.In triplicate, drum is gone out.
(25) dry: to adopt moisture in vacuum-drying to skin to be down to 40%.Drying tunnel is adopted to hang to dry in the air moisture in skin is down to 18% again.
(26) get damp again: water spray, leave standstill, make tare weight water tariff collection about 30%.
(27) fall soft: fall soft 30-60min.
(28) chi, warehouse-in is arranged.
embodiment 2(light color pig Ba Ge)
Pigskin vamp wet blue leather → water squeezing → mono-time shaving (cutting the flesh noodles) → light shaving of secondary (cutting grain) → wet-milling → weigh → rewetting → washing → retanning → washing → neutralization → washing → mono-time stuffing, filling → wash, go out the drum → primary drying → redrying → soft → → backwater → washing → dyeing of dry grinding → weigh that gets damp again → shake, secondary stuffing → wash, go out drum → dry → get damp again → fall soft → spray feel → row's chi, warehouse-in
(1) pigskin vamp wet blue leather: through chrome tanning agent and vegetable tanning agent in conjunction with tanning for processing the leather of pig Ba Ge.
(2) water squeezing: make hide water content be 45%-50%
(3) shavings (cutting flesh noodles): shaving thickness 1.3mm.
(4) the light shaving of secondary (cutting grain): cut grain, stretches grain and cuts brokenly, cuts for complete.
(5) wet-milling: with No. 150 emery cloth buffings, complete is ground to, destroys grain.
(6) weigh.As later raw materials used benchmark, percentage.
(7) rewetting: tare weight 400% water, temperature 35 degree, adds 0.2% formic acid, 0.15% grease-removing agent, rotates 45min, control water.
(8) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(9) retanning: tare weight 100% water, temperature 35 degree, adds 5% chrome tanning agent, rotates 90min, adds 1% sodium formiate, rotates 30min, adds 0.8% sodium bicarbonate, rotates 90min, pH=4.0-4.2.Turn and stop combination and spend the night, control water.
(10) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(11) neutralize: tare weight 200% water, temperature 35 degree, adds in 1.5% and tannin, 1% sodium formiate, rotates 30min, adds 1.0% sodium bicarbonate, rotates 90min, pH=5.5, control water.
(12) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(13) stuffings, filling: tare weight 150% water, temperature 45 degree, adds 5% fatting agent, rotates 30min, adds 2% vegetable tanning agent, rotates 30min, adds 1.0% formic acid, rotates 30min, pH=3.8.Control water.
(14) wash, go out drum: tare weight 400% water, temperature normal temperature, rotate 10min, control water.In triplicate, drum is gone out.
(15) primary drying: adopt moisture in paste drying to skin to be down to 40%.
(16) redrying: adopt extension to dry and dry moisture in skin is down to 14%.
(17) get damp again: water spray, leave standstill, make tare weight water tariff collection about 30%.
(18) shake soft: adopt oscillating staking machine process.
(19) dry grind: crust leather is dry grinded, first with No. 150 emery cloth mill flesh noodles, then use No. 150 emery cloth abrasive particle faces, finally use No. 400 emery cloth abrasive particle faces twice, without obvious pore, fine hair is carefully short, substantially evenly.
(20) weigh: weightening finish 300%, as later raw materials used benchmark, percentage.
(21) backwater: tare weight 400% water, temperature 35 degree, adds 0.6% ammoniacal liquor, 0.05% permeate agent, turns and stops combination and spend the night, control water.
(22) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(23) dyeing, secondary stuffing: tare weight 150% water, temperature 40 degree, adds 0.5% dyestuff, rotates 30min, adds 6% fatting agent, rotate 30min, add 100% hot water, make interior temperature be 45-50 degree, rotate 30min, add 0.5% formic acid, rotate 30min, pH=3.8, control water.
(24) wash, go out drum: tare weight 400% water, temperature normal temperature, rotate 10min, control water.In triplicate, drum is gone out.
(25) dry: to adopt moisture in paste drying to skin to be down to 40%.Drying tunnel is adopted to hang to dry in the air moisture in skin is down to 18% again.
(26) get damp again: water spray, leave standstill, make tare weight water tariff collection about 30%.
(27) fall soft: fall soft 90-120min.
(28) chi, warehouse-in is arranged.
embodiment 3(black pig Ba Ge)
Pigskin vamp wet blue leather → water squeezing → mono-time shaving (cutting the flesh noodles) → light shaving of secondary (cutting grain) → wet-milling → weigh → rewetting → washing → retanning → washing → neutralization → washing → mono-time stuffing, filling → wash, go out the drum → primary drying → redrying → soft → → backwater → washing → dyeing of dry grinding → weigh that gets damp again → shake, secondary stuffing → top contaminates → washes, go out drum → dry → get damp again → fall soft → spray dyestuff → row's chi, warehouse-in
(1) pigskin vamp wet blue leather: through chrome tanning agent and Syntan Combination Tannage system for processing the leather of pig Ba Ge.
(2) water squeezing: make hide water content be 45%-50%
(3) shavings (cutting flesh noodles): shaving thickness 1.6mm.
(4) the light shaving of secondary (cutting grain): cut grain, stretches grain and cuts brokenly, cuts for complete.
(5) wet-milling: with No. 150 emery cloth buffings, complete is ground to, destroys grain.
(6) weigh.As later raw materials used benchmark, percentage.
(7) rewetting: tare weight 400% water, temperature 35 degree, adds 0.2% formic acid, 0.2% grease-removing agent, rotates 45min, control water.
(8) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(9) retanning: tare weight 100% water, temperature 35 degree, adds 6% chrome tanning agent, rotates 90min, adds 1% sodium formiate, rotates 30min, adds 1.0% sodium bicarbonate, rotates 90min, pH=4.0-4.2.Turn and stop combination and spend the night, control water.
(10) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(11) neutralize: tare weight 200% water, temperature 35 degree, adds in 1.5% and tannin, 1% sodium formiate, rotates 30min, adds 1.5% sodium bicarbonate, rotates 90min, pH=6.5, control water.
(12) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(13) stuffings, filling: tare weight 150% water, temperature 45 degree, adds 7% fatting agent, rotates 30min, adds 5% vegetable tanning agent, rotates 30min, adds 1.5% formic acid, rotates 30min, pH=3.8.Control water.
(14) wash, go out drum: tare weight 400% water, temperature normal temperature, rotate 10min, control water.In triplicate, drum is gone out.
(15) primary drying: adopt moisture in vacuum-drying to skin to be down to 40%.
(16) redrying: adopt drying tunnel to hang to dry and dry moisture in skin is down to 16%.
(17) get damp again: water spray, leave standstill, make tare weight water tariff collection about 30%.
(18) shake soft: adopt oscillating staking machine process.
(19) dry grind: crust leather is dry grinded, first with No. 150 emery cloth large buffing machine mill flesh noodles, then use No. 150 emery cloth little buffing machine abrasive particle neck surfaces and belly, then use No. 250 emery cloth large buffing machine abrasive particle faces, finally use No. 400 emery cloth large buffing machine abrasive particle faces, without obvious pore, fine hair is carefully short, substantially evenly.
(20) weigh: weightening finish 300%, as later raw materials used benchmark, percentage.
(21) backwater: tare weight 400% water, temperature 35 degree, adds 0.8% ammoniacal liquor, 0.1% permeate agent, turns and stops combination and spend the night, control water.
(22) wash: tare weight 400% water, temperature 35 degree, rotate 10min, control water.
(23) dyeing, secondary stuffing: tare weight 150% water, temperature 40 degree, adds 2.5% dyestuff, rotates 30min, adds 7% fatting agent, rotate 30min, add 100% hot water, make interior temperature be 45-50 degree, rotate 30min, add 0.8% formic acid, rotate 30min, pH=3.8, control water.
(24) top dye: tare weight 200% water, temperature 50 degree, adds 0.5% dyestuff, rotates 30min, adds 0.3% formic acid, rotates 30min, pH=3.8, control water.
(25) wash, go out drum: tare weight 400% water, temperature normal temperature, rotate 10min, control water.In triplicate, drum is gone out.
(26) dry: to adopt drying tunnel to hang to dry in the air and moisture in skin is down to 18%.
(27) get damp again: water spray, leave standstill, make tare weight water tariff collection about 30%.
(28) fall soft: fall soft 60-90min.
(29) other operations: spray dyestuff.
(30) chi, warehouse-in is arranged.
Claims (2)
1. the positive suede upper leather of pigskin wet ornamenting working method after tanning, is characterized in that comprising following operation:
(1) pigskin vamp wet blue leather is selected: to select through chrome tanning agent tanning or chrome tanning agent and other tanning agents in conjunction with tanning for processing the leather of pig Ba Ge;
(2) water squeezing: normal process steps;
(3) shavings: cut flesh noodles, thickness is with the many 0.1-0.4mm of finished product pig Ba Ge thickness;
(4) the light shaving of secondary: cut grain, cuts entirely to open, and being stretched to cut by grain is broked into suitable, does not change to some extent thickness;
(5) wet-milling: wet blue leather buffing, with 80-200 emery cloth, demand perfection to open is ground to, and destroys grain;
(6) weigh, rewetting, washing, retanning, washing and neutralization, in and between pH to 5.0-6.5;
(7) wash;
(8) stuffings, filling: a small amount of stuffing, fatting agent total amount accounts for the 3-8% of tare weight; The vegetable tanning agent that the stuffing later stage adds tare weight 2-5% is filled; This step stuffing amount by quality ratio;
(9) wash, go out drum;
(10) primary drying: adopt vacuum-drying or paste drying that moisture in skin is down to 30-40%, by quality ratio, requires that grain is flat thin;
(11) redrying: employing nature extension dries in the air or drying tunnel extension dries in the air is down to 14-18% by moisture in skin, by quality ratio;
(12) get damp again: make tare weight water tariff collection 30% ± 5, by quality ratio;
(13) shake soft: adopt oscillating staking machine process, softness is advisable with applicable buffing;
(14) dry grind: crust leather is dry grinded, adopt 150-400 emery cloth, gradation buffing; emery cloth change from coarse to fine; first grind flesh noodles, then abrasive particle face, during abrasive particle face; the direct buffing of the large buffing machine of direct use; or first with little buffing machine edging belly and neck neck, then adopt the method for large buffing machine whole buffing, require without obvious pore; fine hair is carefully short, substantially evenly;
(15) weigh, backwater and washing;
(16) dyeing, secondary stuffing, secondary stuffing will consider the part stuffing amount added in deduction stuffing operation;
(17) top contaminates, washes and go out drum;
(18) dry: adopt vacuum-drying and extension to dry dryly to combine, paste drying dries dry combining with extension, or extension to dry dry;
(19) get damp again: make tare weight water tariff collection 30%, by quality ratio
(20) soft, row's chi and warehouse-in is fallen.
2. the positive suede upper leather of a kind of pigskin according to claim 1 wet ornamenting working method after tanning, it is characterized in that: described step (20) is fallen between soft row's chi also has other techniques, this other technique is spray hand feeling agent and/or spray dyestuff.
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| CN107604107A (en) * | 2017-09-20 | 2018-01-19 | 安徽乐踏鞋业有限公司 | A kind of drying means of chrome tanning leather |
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| WO2010070571A2 (en) * | 2008-12-17 | 2010-06-24 | Asociacion De Investigacion De Las Industrias Del Curtido Y Anexas | Procedure for the tanning of skins, material obtained during said procedure and device |
| CN101812553A (en) * | 2010-04-23 | 2010-08-25 | 海宁森德皮革有限公司 | Production method for non-chrome-tanned ecological automobile seat cushion leather |
| CN102978299A (en) * | 2012-11-29 | 2013-03-20 | 际华三五一二皮革服装有限公司 | Manufacturing method of light, thin and soft high-strength goat gloving leather |
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|---|---|---|---|---|
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