CN102586505B - Circularly-tanning technology for chrome tanning liquor of sheep garment leather - Google Patents
Circularly-tanning technology for chrome tanning liquor of sheep garment leather Download PDFInfo
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Abstract
The invention discloses a circularly-tanning technology for chrome tanning liquor of sheep garment leather. The circularly-tanning technology comprises the following steps: conditioning, drying, shearing, main-soaking, fleshing, degreasing, pickling, softening, disacidifying, softening, pickling, tanning, wet grinding, retanning, neutralizing, adding grease, retanning, dyeing hair, and dyeing plates. According to the circularly-tanning technology for chrome tanning liquor of sheep garment leather, the formation of hexavalent chromium can be effectively reduced, and the chrome waste liquor flocculation is omitted. According to the test on the chrome content after the chrome tanning liquor is utilized, the chrome waste liquor can be recycled repeatedly by supplementing corresponding chrome powder during next-time recycling, thereby realizing the clean production of tanned leather industry. According to the circularly-tanning technology, the sealed no-emission utilization of a chrome resource can be guaranteed so as to greatly reduce environmental pollution, effectively lower waste water emission and save enterprise waste treatment and production cost. In addition, the quality of the produced leather is consistent with that of the common chrome tanned leather, the shrinkage temperature is above 100DEG C, and a leather body is soft, plump and flexible, is colorful, has pure white hair and has no effect on the dyed hair and the dyed plates.
Description
Technical field
The present invention relates to hair leather complete processing, be specifically related to a kind of Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather.
Background technology
Chrome tanning is the current method of tanning best results in the world, and the leather shrinkage temperature that obtains through chrome tanning is high, good stability, finished leather is soft and full and water-fastness.The leather of producing due to additive method always has qualitative defect, and chrome tanning is difficult to be substituted in actual production.Because sheep garment hair leather is very high with the requirement of leather body to hair, therefore chrome tanning is removed from office tanning field always in occupation of absolute dominant position at lamb skin clothes hair, but along with raising and the restriction of country to hair leather discharge standard, the expense of administering chromate waste water is multiplied, and serious yoke the development of hair leather industry.For alleviating the pressure of hair leather industry Chrome Tanning Wastewater, high-absorption chrome tanning method and Chrome Tanning Liquor circulation utilization method arise at the historic moment.Compare with Chrome Tanning Liquor circulation tanning, high-absorption chrome tanning method still old useless chromium is got rid of, and total wastewater flow rate does not reduce.Therefore the Main Trends of The Development of hair leather tanning operation is chrome liquor recycle utilization, but present stage Chrome Tanning Liquor recycle is to be all based upon on the basis of flocculation, wasting manpower and material resources, if control improper meeting, bring the quality fluctuation in production, current Chrome Tanning Liquor recycle mostly rests on the basis of research, and the application prospect of factory's actual production is not good.If Chrome Tanning Liquor is without flocculation, but can recycled for multiple times, and in utilizing process, do not produce sexavalent chrome, the leather that finally can also obtain good quality will significantly reduce costs, have broad application prospects, therefore, it is to have very much realistic meaning that exploitation does not need the chrome tanning circulation technology of flocculation.The present invention is intended to develop a kind of Chrome Tanning Liquor recycle utilization that does not need flocculation, makes its waste liquid direct circulation utilization, does not produce sexavalent chrome in recycle process, still can guarantee the stable of crust leather quality in actual production after the profit that repeatedly circulates, and significantly reduces production costs.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather, to solve existing chromium circulating technology, need flocculation, produce sexavalent chrome, cause the problems such as crust leather quality fluctuation.This technique not only can realize the useless chromium zero release in chrome tanning stage and significantly reduce discharge of wastewater and production cost, and the clothing leather hair color of producing is pure white, full, attractive in appearance, clear, leather body good hand feeling, softness, bright-colored, shrinkage temperature be more than 100 ℃, on dying hair and dying plate and there is no impact.
To achieve these goals, the technical solution used in the present invention is:
A Chrome Tanning Liquor circulation process for tanning for sheep garment hair leather, comprises the following steps:
Step 1, rewetting: lamb skin salt solution with concentration 40-80g/L before cropping is got damp again hide at 30-35 ℃, and the mass ratio of water and fur is 20-30, soak time 2-4h;
Step 2, dries;
Step 3, cropping;
Step 4, main immersion: the lamb skin after cropping is soaked, and in soak solution, the mass ratio of water and fur is 10-20, soak solution is with water meter, wherein sanitas 0.5-1.5g/L, salt 10-25g/L, permeate agent 0.5-1.0g/L, temperature 20-30 ℃, soaked overnight, the time is 12-24h;
Step 5, fleshing;
Step 6, degreasing: in degreasing fluid, the mass ratio of water and fur is 10-20, degreasing fluid is with water meter, wherein soda ash 0.5-1.5g/L, grease-removing agent 2-5g/L, permeate agent 0.5-1.5g/L, temperature 35-40 ℃, soak time 20-60min;
Step 7, pickling: in pickling liquid, the mass ratio of water and fur is 5-15, and pickling liquid is with water meter, wherein common salt concn is 30-40g/L, adjusts the temperature to 30-40 ℃, after infiltration 10-30min, adds formic acid 3-8g/L, pickling liquid pH is 2.5-4.0, pickling time 1-4h;
Step 8, softening: in pickling liquid, add acid bating enzyme to form bating liquor, in bating liquor, the concentration of acid bating enzyme is 1.0-2.0g/L, softening time 5-10h;
Step 9, disacidify: add little Su configuration disacidify liquid in bating liquor, in disacidify liquid, sodium bicarbonate concentration is 5-10g/L, controls temperature at 25-35 ℃, and adjusting pH is 6.0-6.5, carries out disacidify, disacidify time 0.5-2h;
Step 10, secondary is softening: in disacidify liquid, add neutral macerating enzyme 1.0-2.0g/L, standing over night after softening 2-3h, the time is 12-24h;
Step 11, secondary pickling: add formic acid configuration secondary pickling liquid in the solution after secondary is softening, in secondary pickling liquid, formic acid concn is 5-10g/L, regulates pH below 2.5, pickling time 1-4h;
Step 12, first batch of tanning: first batch of lamb skin control water after secondary pickling is placed on to tanning in rotary drum, in owse, common salt concn is 50-80g/L, grease dispersant concentration 0.1-2.0g/L, sulfuric acid concentration 0.1-1.0g/L, B=33% standard chromium powder concentration is 20g/L, chromium cross linker concentration is 1-5g/L, regulate pH to 2.0-3.5, temperature is 30-35 ℃, standing over night after rotation 2-10h, time is 14-22h, after standing, add automatic alkali extracting agent to 0.1-2.0g/L, regulate pH to 3.5-4.5, after rotating 5-10h, skin is taken out, standing control water, the waste liquid that takes a morsel is measured wherein chromium content, while amounting to into chromium powder content in order to next tanning, measurement standard is used, in Chrome Tanning Liquor, keep the skin wet, salt and chromium powder, making owse keep adding sulfuric acid concentration after the state of initial owse is 0.1-1.0g/L, regulate pH to 2.0-3.0, after ageing 12-24h, carry out tanning next time,
Step 13, follow-up batch of tanning: follow-up batch of lamb skin control water after secondary pickling is placed in last batch of tanned waste liquid, add the grease dispersion agent with last batch of tanning same amount used, chromium cross linker, supplement B=33% standard chromium powder to 20g/L, add sulfuric acid 0.1-1.0g/L, regulate pH to 2.0-3.5, temperature is 30-35 ℃, standing over night after rotation and first batch of tanning same time used, time is 14-22h, after standing, add automatic alkali extracting agent 0.1-2.0g/L, regulate pH to 3.5-4.5, after rotating 5-10h, skin is taken out, standing control water, the waste liquid that takes a morsel is measured wherein chromium content, while amounting to into chromium powder content in order to next tanning, measurement standard is used, in owse, keep the skin wet, salt and chromium powder, making owse keep adding sulfuric acid to make sulfuric acid concentration after the state of initial owse is 0.1-1.0g/L, regulate pH to 2.0-3.0, ageing is carried out tanning next time after spending the night, the like carry out recycle,
Step 14, wet-milling: use wet wheeling machine to carry out wet-milling to the flesh noodles of crust leather after tanning, to flesh noodles uniformity;
Step 15, retanning: the crust leather after wet-milling is placed in to paddle-tumble retanning, in retanning liquid, the mass ratio of water and fur is 5-15, retanning liquid is with water meter, wherein formic acid concn is that 0.1-1.0g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 1-5ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 0.1-1.0g/L, chromium fixing agent concentration are 1-5g/L, temperature is controlled at 35-40 ℃, regulate pH to 3.0-3.5, after retanning 2-8h, add automatic alkali extracting agent 0.1-1.0g/L, regulate pH to 3.5-4.0, carry alkali and finish standing 14-19h after paddling 5-10h;
Step 10 six, neutralization: in neutralizer, the mass ratio of water and fur is 10-20, and neutralizer is with water meter, and wherein sodium formate concentrations is that 0.1-2.0g/L, sodium bicarbonate concentration are 0.1-1.0g/L, and temperature is controlled at 40-50 ℃, paddling 1-3h;
Step 10 seven, stuffing: in fat liquor, the mass ratio of water and fur is 10-20, fat liquor is with water meter, and wherein fatting agent concentration is 5-50ml/L, temperature 55-65 ℃;
Step 10 eight, secondary retanning: the hair after edit is removed from office to retanning again, in retanning liquid, the mass ratio of water and fur is 5-15, retanning liquid is with water meter, wherein formic acid concn is 0.1-1.0g/L, chrome and aluminium tanning agent concentration is 4g/L, fatting agent concentration is 1-5ml/L, containing chrome tanning agent concentration, be 5g/L, chromium cross linker concentration is 0.1-1.0g/L, chromium fixing agent concentration is 1-5g/L, temperature is controlled at 35-40 ℃, regulate pH to 3.0-3.5, after retanning 2-8h, add automatic alkali extracting agent 0.1-1.0g/L, regulate pH to 3.5-4.0, carry alkali and finish standing over night after paddling 5-10h, time is 14-19h,
Step 10 nine, dye hair: by the emptying of retanning liquid, hair leather after retanning is dyed to hair, dying the mass ratio of water and fur in mao liquid is 10-20, dyes mao liquid with water meter, and wherein formic acid concn is 0.1-1.0g/L, to dye mao dye strength be that 0.1-1.0g/L, common salt concn are 5-10g/L, temperature is 60-80 ℃, paddling 2-7h, standing over night, the time is 17-22h;
Step 2 ten, dye plate: will dye a mao liquid emptying, the hair leather dying after hair is dyed to plate, dying the mass ratio of water and fur in plate liquid is 10-20, dye plate liquid with water meter, wherein formic acid concn is 0.1-1.0g/L, to dye plate dye strength be that 0.1-1.0g/L, common salt concn are 5-10g/L, and temperature is 20-30 ℃, paddling 2-7h, standing over night.
In described step 8, acid bating enzyme is 3350 aspartic proteases.
In described step 12 and step 13, each batch used the lamb skin of identical number.
In described step 12 and step 13, to the amount keeping the skin wet in owse, be: every lamb skin moisturizing 1L.
In described step 12 and step 13, described grease dispersion agent is not containing alkylphenol and oxyethyl group alkyl phenol.
In described step 12 and step 13, described automatic alkali extracting agent covers the slow dissolubility of limiting property and carries alkaline agent for being with.
In described step 15, described chrome and aluminium tanning agent is the mixture of chromium sesquioxide and aluminium sesquioxide, mass ratio 2: 1.
Described formic acid and sulfuric acid concentration are 85%.
Compared with prior art, the present invention has the following advantages:
Adopt Chrome Tanning Liquor circulation tanning and supporting technique to carry out the processing of lamb skin clothes hair leather, do not need the flocculation of useless chrome liquor, by the test to chrome content after Chrome Tanning Liquor utilization, when next recycle, supplement corresponding chromium powder, can realize the recycled for multiple times of chroming waste liquor, in recycle process, do not produce sexavalent chrome, there is actual production meaning.This technology not only can realize the useless chromium zero release of tanning operation, reduce enterprise's waste water control cost, and the lamb skin clothes hair of producing leather hair color is pure white, full, attractive in appearance, clear, leather body good hand feeling, softness, bright-colored, shrinkage temperature are more than 100 ℃, physical and mechanical properties reaches the resulting hair leather of common chrome tanning method completely, on dying hair and dying plate, there is no impact.
The present invention in and in dyeing process, adopt the method for Fatliquoring in multi-step, different fatting agent gradation is added, strengthen stuffing effect.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details.
In the present invention, Chrome Tanning Liquor circulation tanning lamb skin is produced clothes hair leather production technique, comprises the following steps successively: rewetting → dryings → cropping → main immersion → fleshing → degreasing → pickling → softening → disacidify → secondary is softening → secondary pickling → tanning → wet-milling → retanning → neutralization → stuffing → dry → dry finishing → dry-cleaning → dry grinding → brush dust → retanning → dye mao → dye plate → dry → dry finishing → finished product.Whole technique is except the master operations such as tanning and retanning, and other technique is with above-mentioned common process.Below by concrete embodiment, the present invention is described in detail to explanation.
Embodiment 1
A Chrome Tanning Liquor circulation process for tanning for sheep garment hair leather, comprises the following steps:
Step 1, rewetting: lamb skin salt solution with concentration 80g/L before cropping is got damp again hide at 35 ℃, and the mass ratio of water and fur is 30, soak time 4h;
Step 2, dries, and uses drier to remove unnecessary water in skin;
Step 3, cropping, is used wool-clip machine to carry out cropping, makes lint fluffy, substantially except crude removal, dust, the hair of cutting is reclaimed;
Step 4, main immersion: lamb skin after cropping is soaked, and in soak solution, the mass ratio of water and fur is 20, soak solution is with water meter, wherein sanitas 1.5g/L, salt 25g/L, permeate agent 1.0g/L, 20 ℃ of temperature, soaked overnight, the time is 14h;
Step 5, fleshing, adopts the mode of mechanical fleshing to remove the remaining sarcolemma in lamb skin surface after immersion, be mainly the fleshing of strengthening ridge portion and limit belly;
Step 6, degreasing: in degreasing fluid, the mass ratio of water and fur is 20, degreasing fluid is with water meter, wherein soda ash 1.5g/L, grease-removing agent 5g/L, permeate agent 1.5g/L, 40 ℃ of temperature, soak time 60min;
Step 7, pickling: in pickling liquid, the mass ratio of water and fur is 15, pickling liquid is with water meter, and wherein common salt concn is 40g/L, adjusts the temperature to 40 ℃, after infiltration 30min, adds formic acid 8g/L, and pickling liquid pH is 4.0, pickling time 4h;
Step 8, softening: in pickling liquid, add acid bating enzyme (3350 aspartic protease) to form bating liquor, in bating liquor, the concentration of acid bating enzyme is 2.0g/L, softening time 10h;
Step 9, disacidify: add little Su configuration disacidify liquid in bating liquor, in disacidify liquid, sodium bicarbonate concentration is 10g/L, controls temperature at 35 ℃, and regulating pH is 6.5, carries out disacidify, disacidify time 0.5h;
Step 10, secondary is softening: in disacidify liquid, add neutral macerating enzyme 1.0g/L, standing over night after softening 2h, the time is 14h;
Step 11, secondary pickling: add formic acid configuration secondary pickling liquid in the solution after secondary is softening, in secondary pickling liquid, formic acid concn is 10g/L, regulates pH below 2.5, pickling time 4h;
Step 12, first batch of tanning: 30 lamb skins are divided into three batches of tannings after above step process, randomly drawing 10 for every batch operates, lamb skin after first batch of pickling control water is placed in to rotary drum tanning, during tanning, every lamb skin is used 15L water, add salt 65g/L, DESOAGENSHN (grease dispersion agent) 0.5g/L, sulfuric acid 0.2g/L, B=33% standard chromium powder 20g/L, DESOTANAR (chromium cross linker) 1.5g/L, regulate pH to 2.7, temperature is 30 ℃, standing over night after rotation 4h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.0g/L next day, regulate pH to 4.0, after rotation 5h, skin is taken out, control water spends the night.The Chrome Tanning Liquor that takes a morsel is measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 16.5g/L.In Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 650g salt, 165gB=33% standard chromium powder.Add sulfuric acid 0.5g/L, regulate pH to 2.7, Chrome Tanning Liquor ageing is spent the night.In crust leather from standing, cutting fritter mensuration shrinkage temperature next day is 105 ℃.
Step 13, follow-up batch of tanning:
Second batch recycles tanning: measuring first batch of pH after the last waste liquid ageing of tanning is 3.3, adds 0.1g/L sulphur acid for adjusting pH to 3.0.Second batch of lamb skin dropped in first batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 0.2g/L, B=33% standard chromium powder 3.5g/L, DESOTAN AR (chromium cross linker) 1.5g/L, controlling temperature is 30 ℃, standing over night after rotation 4h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.0g/L next day, regulate pH to 4.0, after rotation 5h, skin is taken out, control water spends the night.The second batch of Chrome Tanning Liquor that take a morsel measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 15.5g/L.In second batch of Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 650g salt, 155gB=33% standard chromium powder.Add sulfuric acid 0.5g/L, regulate pH to 2.7, second batch of Chrome Tanning Liquor ageing spent the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 101 ℃.
The 3rd batch recycles tanning: measuring second batch of pH after the last waste liquid ageing of tanning is 3.4, adds 0.15g/L sulphur acid for adjusting pH to 3.0.The 3rd batch of lamb skin dropped in second batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 0.2g/L, B=33% standard chromium powder 4.5g/L, DESOTAN AR (chromium cross linker) 1.5g/L, controlling temperature is 30 ℃, standing over night after rotation 4h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.0g/L next day, regulate pH to 4.0, after rotation 5h, skin is taken out, control water spends the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 102 ℃.
Step 14, wet-milling: by tanned 30 lamb skins difference mark, use wet wheeling machine to carry out wet-milling to the flesh noodles unification of crust leather, to flesh noodles uniformity.；
Step 15, retanning: the crust leather after wet-milling is placed in to paddle-tumble retanning, in retanning liquid, the mass ratio of water and fur is 15, retanning liquid is with water meter, wherein formic acid concn is that 1.0g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 1ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 1.0g/L, chromium fixing agent concentration are 1g/L, temperature is controlled at 35 ℃, regulate pH to 3.5, after retanning 2h, add automatic alkali extracting agent 1.0g/L, regulate pH to 3.5, carry alkali and finish standing 19h after paddling 10h; Wherein, described chrome and aluminium tanning agent is the mixture of chromium sesquioxide and aluminium sesquioxide, mass ratio 2: 1.
Step 10 six, neutralization: in neutralizer, the mass ratio of water and fur is 20, and neutralizer is with water meter, and wherein sodium formate concentrations is that 2.0g/L, sodium bicarbonate concentration are 1.0g/L, and temperature is controlled at 50 ℃, paddling 3h;
Step 10 seven, stuffing: in fat liquor, the mass ratio of water and fur is 20, fat liquor is with water meter, and wherein fatting agent concentration is 50ml/L, 65 ℃ of temperature;
Step 10 eight, secondary retanning: the hair after edit is removed from office to retanning again, in retanning liquid, the mass ratio of water and fur is 15, retanning liquid is with water meter, wherein formic acid concn is that 1.0g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 5ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 1.0g/L, chromium fixing agent concentration are 1g/L, temperature is controlled at 40 ℃, regulate pH to 3.5, after retanning 8h, add automatic alkali extracting agent 0.1g/L, regulate pH to 4.0, carry alkali and finish standing over night after paddling 10h, the time is 19h;
Step 10 nine, dye hair: by the emptying of retanning liquid, hair leather after retanning is dyed to hair, dying the mass ratio of water and fur in mao liquid is 20, dyes mao liquid with water meter, and wherein formic acid concn is 1.0g/L, to dye mao dye strength be that 1.0g/L, common salt concn are 10g/L, temperature is 80 ℃, paddling 2h, standing over night, the time is 17h;
Step 2 ten, dye plate: will dye a mao liquid emptying, the hair leather dying after hair is dyed to plate, dying the mass ratio of water and fur in plate liquid is 10, dye plate liquid with water meter, wherein formic acid concn is 0.1g/L, to dye plate dye strength be that 0.1g/L, common salt concn are 5g/L, and temperature is 30 ℃, paddling 7h, standing over night.
The formic acid and the sulfuric acid concentration that in step, relate to are 85%.
Embodiment 2
A Chrome Tanning Liquor circulation process for tanning for sheep garment hair leather, comprises the following steps:
Step 1, rewetting: lamb skin salt solution with concentration 40g/L before cropping is got damp again hide at 30 ℃, and the mass ratio of water and fur is 20, soak time 4h;
Step 2, dries, and uses drier to remove unnecessary water in skin;
Step 3, cropping, is used wool-clip machine to carry out cropping, makes lint fluffy, substantially except crude removal, dust, the hair of cutting is reclaimed;
Step 4, main immersion: lamb skin after cropping is soaked, and in soak solution, the mass ratio of water and fur is 20, soak solution is with water meter, wherein sanitas 1.5g/L, salt 15g/L, permeate agent 1.0g/L, 20 ℃ of temperature, soaked overnight, the time is 14h;
Step 5, fleshing;
Step 6, degreasing: in degreasing fluid, the mass ratio of water and fur is 10, degreasing fluid is with water meter, wherein soda ash 1.5g/L, grease-removing agent 2g/L, permeate agent 1.0g/L, 40 ℃ of temperature, soak time 40min;
Step 7, pickling: in pickling liquid, the mass ratio of water and fur is 10, pickling liquid is with water meter, and wherein common salt concn is 35g/L, adjusts the temperature to 35 ℃, after infiltration 20min, adds formic acid 6g/L, and pickling liquid pH is 3.0, pickling time 4h;
Step 8, softening: in pickling liquid, add acid bating enzyme to form bating liquor, in bating liquor, the concentration of acid bating enzyme is 1.0g/L, softening time 10h;
Step 9, disacidify: add little Su configuration disacidify liquid in bating liquor, in disacidify liquid, sodium bicarbonate concentration is 10g/L, controls temperature at 30 ℃, and regulating pH is 6.5, carries out disacidify, disacidify time 1.5h;
Step 10, secondary is softening: in disacidify liquid, add neutral macerating enzyme 2.0g/L, standing over night after softening 3h, the time is 12h;
Step 11, secondary pickling: add formic acid configuration secondary pickling liquid in the solution after secondary is softening, in secondary pickling liquid, formic acid concn is 5g/L, regulates pH below 2.5, pickling time 4h;
Step 12, first batch of tanning: 50 lamb skins are divided into five batches of tannings after same treatment, randomly drawing 10 for every batch operates, lamb skin after first batch of pickling control water is placed in to rotary drum tanning, during tanning, every lamb skin is used 15L water, add salt 80g/L, DESOAGEN SHN (grease dispersion agent) 1.0g/L, sulfuric acid 0.5g/L, B=33% standard chromium powder 20g/L, DESOTAN AR (chromium cross linker) 2.5g/L, regulate pH to 2.5, temperature is 33 ℃, standing over night after rotation 6h.Add DESOAGEN SMO (automatic alkali extracting agent) 0.5g/L next day, regulate pH to 3.5, after rotation 8h, skin is taken out, control water spends the night.The Chrome Tanning Liquor that takes a morsel is measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 16.20g/L.In Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 800g salt, 162g chromium powder.Add sulfuric acid 1.0g/L, regulate pH to 2.0, Chrome Tanning Liquor ageing is spent the night.In crust leather from standing, cutting fritter mensuration shrinkage temperature next day is 101 ℃;
Step 13, follow-up batch of tanning:
Second batch recycles tanning: measuring first batch of pH after the last waste liquid ageing of tanning is 2.9, adds 0.1g/L sulphur acid for adjusting pH to 2.5.Second batch of lamb skin dropped in first batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 1.0g/L, B=33% standard chromium powder 3.8g/L, DESOTAN AR (chromium cross linker) 2.5g/L, controlling temperature is 30 ℃, standing over night after rotation 4h.Add DESOAGEN SMO (automatic alkali extracting agent) 0.5g/L next day, regulate pH to 3.5, after rotation 8h, skin is taken out, control water spends the night.The second batch of Chrome Tanning Liquor that take a morsel measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 15.5g/L.In second batch of Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 800g salt, 155g chromium powder.Add sulfuric acid 1.0g/L, regulate pH to 2.0, second batch of Chrome Tanning Liquor ageing spent the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 102 ℃.
The 3rd batch recycles tanning: measuring second batch of pH after the last waste liquid ageing of tanning is 2.8, adds 0.1g/L sulphur acid for adjusting pH to 2.5.The 3rd batch of lamb skin dropped in second batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 0.2g/L, B=33% standard chromium powder 4.5g/L, DESOTAN AR (chromium cross linker) 2.5g/L, controlling temperature is 30 ℃, standing over night after rotation 4h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.0g/L next day, regulate pH to 3.5, after rotation 8h, skin is taken out, control water spends the night.The 3rd batch of Chrome Tanning Liquor that take a morsel measured wherein chromium content, and amounting to into chromium powder content is 15.80g/L.In the 3rd batch of Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 800g salt, 158g chromium powder.Add sulfuric acid 1.0g/L, regulate pH to 2.0, the 3rd batch of Chrome Tanning Liquor ageing spent the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 101 ℃.
The 4th batch recycles tanning: the pH measuring after the 3rd batch of last waste liquid ageing of tanning is 2.8, adds 0.1g/L sulphur acid for adjusting pH to 2.5.The 4th batch of lamb skin dropped in the 3rd batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 0.2g/L, B=33% standard chromium powder 4.2g/L, DESOTAN AR (chromium cross linker) 2.5g/L, controlling temperature is 30 ℃, standing over night after rotation 4h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.0g/L next day, regulate pH to 3.5, after rotation 8h, skin is taken out, control water spends the night.The 4th batch of Chrome Tanning Liquor that take a morsel measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 15.9g/L.In the 4th batch of Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 800g salt, 159g chromium powder.Add sulfuric acid 1.0g/L, regulate pH to 2.0, the 4th batch of Chrome Tanning Liquor ageing spent the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 103 ℃.
The 5th batch recycles tanning: the pH measuring after the 4th batch of last waste liquid ageing of tanning is 2.8, adds 0.1g/L sulphur acid for adjusting pH to 2.5.The 5th batch of lamb skin dropped in the 4th batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 0.2g/L, B=33% standard chromium powder 4.1g/L, DESOTAN AR (chromium cross linker) 2.5g/L, controlling temperature is 30 ℃, standing over night after rotation 4h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.0g/L next day, regulate pH to 3.5, after rotation 8h, skin is taken out, control water spends the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 103 ℃.
Step 14, wet-milling: use wet wheeling machine to carry out wet-milling to the flesh noodles of crust leather after tanning, to flesh noodles uniformity;
Step 15, retanning: the crust leather after wet-milling is placed in to paddle-tumble retanning, in retanning liquid, the mass ratio of water and fur is 10, retanning liquid is with water meter, wherein formic acid concn is that 0.8g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 3ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 0.80g/L, chromium fixing agent concentration are 3g/L, temperature is controlled at 40 ℃, regulate pH to 3.5, after retanning 5h, add automatic alkali extracting agent 1.0g/L, regulate pH to 4.0, carry alkali and finish standing 19h after paddling 10h;
Step 10 six, neutralization: in neutralizer, the mass ratio of water and fur is 20, and neutralizer is with water meter, and wherein sodium formate concentrations is that 2.0g/L, sodium bicarbonate concentration are 1.0g/L, and temperature is controlled at 50 ℃, paddling 2h;
Step 10 seven, stuffing: in fat liquor, the mass ratio of water and fur is 10-20, fat liquor is with water meter, and wherein fatting agent concentration is 50ml/L, temperature 60 C;
Step 10 eight, secondary retanning: the hair after edit is removed from office to retanning again, in retanning liquid, the mass ratio of water and fur is 15, retanning liquid is with water meter, wherein formic acid concn is that 1.0g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 5ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 1.0g/L, chromium fixing agent concentration are 5g/L, temperature is controlled at 40 ℃, regulate pH to 3.5, after retanning 2-8h, add automatic alkali extracting agent 1.0g/L, regulate pH to 4.0, carry alkali and finish standing over night after paddling 10h, the time is 19h;
Step 10 nine, dye hair: by the emptying of retanning liquid, hair leather after retanning is dyed to hair, dying the mass ratio of water and fur in mao liquid is 20, dyes mao liquid with water meter, and wherein formic acid concn is 1.0g/L, to dye mao dye strength be that 1.0g/L, common salt concn are 10g/L, temperature is 70 ℃, paddling 5h, standing over night, the time is 20h;
Step 2 ten, dye plate: will dye a mao liquid emptying, the hair leather dying after hair is dyed to plate, dying the mass ratio of water and fur in plate liquid is 15, dye plate liquid with water meter, wherein formic acid concn is 0.8g/L, to dye plate dye strength be that 1.0g/L, common salt concn are 10g/L, and temperature is 30 ℃, paddling 7h, standing over night.
In described step 8, acid bating enzyme is 3350 aspartic proteases.
Embodiment 3
A Chrome Tanning Liquor circulation process for tanning for sheep garment hair leather, comprises the following steps:
Step 1, rewetting: lamb skin salt solution with concentration 30g/L before cropping is got damp again hide at 30 ℃, and the mass ratio of water and fur is 20, soak time 2h;
Step 2, dries;
Step 3, cropping;
Step 4, main immersion: lamb skin after cropping is soaked, and in soak solution, the mass ratio of water and fur is 20, soak solution is with water meter, wherein sanitas 0.5g/L, salt 10g/L, permeate agent 0.5g/L, 20 ℃ of temperature, soaked overnight, the time is 12h;
Step 5, fleshing;
Step 6, degreasing: in degreasing fluid, the mass ratio of water and fur is 20, degreasing fluid is with water meter, wherein soda ash 0.5g/L, grease-removing agent 2g/L, permeate agent 0.5g/L, 35 ℃ of temperature, soak time 20min;
Step 7, pickling: in pickling liquid, the mass ratio of water and fur is 5, pickling liquid is with water meter, and wherein common salt concn is 30g/L, adjusts the temperature to 30 ℃, after infiltration 20min, adds formic acid 4g/L, and pickling liquid pH is 2.5, pickling time 2h;
Step 8, softening: in pickling liquid, add acid bating enzyme to form bating liquor, in bating liquor, the concentration of acid bating enzyme is 1.0g/L, softening time 5h;
Step 9, disacidify: add little Su configuration disacidify liquid in bating liquor, in disacidify liquid, sodium bicarbonate concentration is 5g/L, controls temperature at 25 ℃, and regulating pH is 6.0, carries out disacidify, disacidify time 0.5h;
Step 10, secondary is softening: in disacidify liquid, add neutral macerating enzyme 1.0g/L, standing over night after softening 2h, the time is 12h;
Step 11, secondary pickling: add formic acid configuration secondary pickling liquid in the solution after secondary is softening, in secondary pickling liquid, formic acid concn is 5g/L, regulates pH below 2.5, pickling time 1h;
Step 12, first batch of tanning: 40 lamb skins are divided into four batches of tannings after same treatment, randomly drawing 10 for every batch operates, lamb skin after first batch of pickling control water is placed in to rotary drum tanning, during tanning, every lamb skin is used 15L water, add salt 50g/L, DESOAGEN SHN (grease dispersion agent) 2.0g/L, sulfuric acid 0.7g/L, B=33% standard chromium powder 20g/L, DESOTAN AR (chromium cross linker) 4.0g/L, regulate pH to 2.3, temperature is 35 ℃, standing over night after rotation 8h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.5g/L next day, regulate pH to 4.2, after rotation 7h, skin is taken out, control water spends the night.The Chrome Tanning Liquor that takes a morsel is measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 14.8g/L.In Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 500g salt, 148g chromium powder.Add sulfuric acid 0.8g/L, regulate pH to 2.5, Chrome Tanning Liquor ageing is spent the night.In crust leather from standing, cutting fritter mensuration shrinkage temperature next day is 105 ℃.
Step 13, follow-up batch of tanning:
Second batch recycles tanning: measuring first batch of pH after the last waste liquid ageing of tanning is 3.1, adds 0.2g/L sulphur acid for adjusting pH to 2.3.Second batch of lamb skin dropped in first batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 2.0g/L, B=33% standard chromium powder 5.2g/L, DESOTAN AR (chromium cross linker) 4.0g/L, controlling temperature is 35 ℃, standing over night after rotation 8h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.5g/L next day, regulate pH to 4.2, after rotation 7h, skin is taken out, control water spends the night.The second batch of Chrome Tanning Liquor that take a morsel measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 15.0g/L.In second batch of Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 500g salt, 150gB=33% standard chromium powder.Add sulfuric acid 0.8g/L, regulate pH to 2.5, second batch of Chrome Tanning Liquor ageing spent the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 104 ℃.
The 3rd batch recycles tanning: measuring second batch of pH after the last waste liquid ageing of tanning is 2.8, adds 0.1g/L sulphur acid for adjusting pH to 2.3.The 3rd batch of lamb skin dropped in second batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 2.0g/L, B=33% standard chromium powder 5.0g/L, DESOTAN AR (chromium cross linker) 4.0g/L, controlling temperature is 35 ℃, standing over night after rotation 8h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.5g/L next day, regulate pH to 4.2, after rotation 7h, skin is taken out, control water spends the night.The 3rd batch of Chrome Tanning Liquor that take a morsel measured wherein chromium content, and amounting to into B=33% standard chlorine powder content is 15.5g/L.In the 3rd batch of Chrome Tanning Liquor, supplement 10L water to the original water yield of rotary drum, add 500g salt, 155gB=33% standard chromium powder.Add sulfuric acid 0.8g/L, regulate pH to 2.5, the 3rd batch of Chrome Tanning Liquor ageing spent the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 103 ℃.
The 4th batch recycles tanning: the pH measuring after the 3rd batch of last waste liquid ageing of tanning is 2.9, adds 0.15g/L sulphur acid for adjusting pH to 2.3.The 4th batch of lamb skin dropped in the 3rd batch of last waste liquid of tanning, add DESOAGEN SHN (grease dispersion agent) 2.0g/L, B=33% standard chromium powder 4.5g/L, DESOTAN AR (chromium cross linker) 4.0g/L, controlling temperature is 35 ℃, standing over night after rotation 8h.Add DESOAGEN SMO (automatic alkali extracting agent) 1.5g/L next day, regulate pH to 4.2, after rotation 7h, skin is taken out, control water spends the night.The shrinkage temperature that cuts fritter mensuration crust leather next day in skin from standing is 102 ℃.
Step 14, wet-milling: use wet wheeling machine to carry out wet-milling to the flesh noodles of crust leather after tanning, to flesh noodles uniformity;
Step 15, retanning: the crust leather after wet-milling is placed in to paddle-tumble retanning, in retanning liquid, the mass ratio of water and fur is 5, retanning liquid is with water meter, wherein formic acid concn is that 0.3g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 3ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 0.2g/L, chromium fixing agent concentration are 3g/L, temperature is controlled at 38 ℃, regulate pH to 3.0, after retanning 2h, add automatic alkali extracting agent 0.3g/L, regulate pH to 3.5, carry alkali and finish standing 14h after paddling 5h;
Step 10 six, neutralization: in neutralizer, the mass ratio of water and fur is 10, and neutralizer is with water meter, and wherein sodium formate concentrations is that 0.3g/L, sodium bicarbonate concentration are 0.3g/L, and temperature is controlled at 43 ℃, paddling 1h;
Step 10 seven, stuffing: in fat liquor, the mass ratio of water and fur is 10, fat liquor is with water meter, and wherein fatting agent concentration is 30ml/L, 55 ℃ of temperature;
Step 10 eight, secondary retanning: the hair after edit is removed from office to retanning again, in retanning liquid, the mass ratio of water and fur is 5, retanning liquid is with water meter, wherein formic acid concn is that 0.3g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 3ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 0.3g/L, chromium fixing agent concentration are 3g/L, temperature is controlled at 38 ℃, regulate pH to 3.3, after retanning 2h, add automatic alkali extracting agent 0.3g/L, regulate pH to 3.8, carry alkali and finish standing over night after paddling 8h, the time is 16h;
Step 10 nine, dye hair: by the emptying of retanning liquid, hair leather after retanning is dyed to hair, dying the mass ratio of water and fur in mao liquid is 10, dyes mao liquid with water meter, and wherein formic acid concn is 0.3g/L, to dye mao dye strength be that 0.3g/L, common salt concn are 6g/L, temperature is 70 ℃, paddling 2h, standing over night, the time is 17h;
Step 2 ten, dye plate: will dye a mao liquid emptying, the hair leather dying after hair is dyed to plate, dying the mass ratio of water and fur in plate liquid is 10, dye plate liquid with water meter, wherein formic acid concn is 0.3g/L, to dye plate dye strength be that 0.3g/L, common salt concn are 6g/L, and temperature is 25 ℃, paddling 2h, standing over night.
Claims (8)
1. a Chrome Tanning Liquor circulation process for tanning for sheep garment hair leather, is characterized in that, comprises the following steps:
Step 1, rewetting: lamb skin salt solution with concentration 40-80g/L before cropping is got damp again hide at 30-35 ℃, and the mass ratio of water and fur is 20-30, soak time 2-4h;
Step 2, dries;
Step 3, cropping;
Step 4, main immersion: the lamb skin after cropping is soaked, and in soak solution, the mass ratio of water and fur is 10-20, soak solution is with water meter, wherein sanitas 0.5-1.5g/L, salt 10-25g/L, permeate agent 0.5-1.0g/L, temperature 20-30 ℃, soaked overnight, the time is 12-24h;
Step 5, fleshing;
Step 6, degreasing: in degreasing fluid, the mass ratio of water and fur is 10-20, degreasing fluid is with water meter, wherein soda ash 0.5-1.5g/L, grease-removing agent 2-5g/L, permeate agent 0.5-1.5g/L, temperature 35-40 ℃, soak time 20-60min;
Step 7, pickling: in pickling liquid, the mass ratio of water and fur is 5-15, and pickling liquid is with water meter; wherein common salt concn is 30-40g/L, adjusts the temperature to 30-40 ℃, after infiltration 10-30min, adds formic acid 3-8g/L; pickling liquid pH is 2.5-4.0, pickling time 1-4h;
Step 8, softening: in pickling liquid, add acid bating enzyme to form bating liquor, in bating liquor, the concentration of acid bating enzyme is 1.0-2.0g/L, softening time 5-10h;
Step 9, disacidify: add sodium bicarbonate configuration disacidify liquid in bating liquor, in disacidify liquid, sodium bicarbonate concentration is 5-10g/L, controls temperature at 25-35 ℃, and adjusting pH is 6.0-6.5, carries out disacidify, disacidify time 0.5-2h;
Step 10, secondary is softening: in disacidify liquid, add neutral macerating enzyme 1.0-2.0g/L, standing over night after softening 2-3h, the time is 12-24h;
Step 11, secondary pickling: add formic acid configuration secondary pickling liquid in the solution after secondary is softening, in secondary pickling liquid, formic acid concn is 5-10g/L, regulates pH below 2.5, pickling time 1-4h;
Step 12, first batch of tanning: first batch of lamb skin control water after secondary pickling is placed on to tanning in rotary drum, in owse, common salt concn is 50-80g/L, grease dispersant concentration 0.1-2.0g/L, sulfuric acid concentration 0.1-1.0g/L, B=33% standard chromium powder concentration is 20g/L, chromium cross linker concentration is 1-5g/L, regulate pH to 2.0-3.5, temperature is 30-35 ℃, standing over night after rotation 2-10h, time is 14-22h, after standing, add automatic alkali extracting agent to 0.1-2.0g/L, regulate pH to 3.5-4.5, after rotating 5-10h, skin is taken out, standing control water, the waste liquid that takes a morsel is measured wherein chromium content, while amounting to into chromium powder content in order to next tanning, measurement standard is used, in Chrome Tanning Liquor, keep the skin wet, salt and chromium powder, making owse keep adding sulfuric acid concentration after the state of initial owse is 0.1-1.0g/L, regulate pH to 2.0-3.0, after ageing 12-24h, carry out tanning next time,
Step 13, follow-up batch of tanning: follow-up batch of lamb skin control water after secondary pickling is placed in last batch of tanned waste liquid, add the grease dispersion agent with last batch of tanning same amount used, chromium cross linker, supplement B=33% standard chromium powder to 20g/L, add sulfuric acid 0.1-1.0g/L, regulate pH to 2.0-3.5, temperature is 30-35, standing over night after ℃ rotation and first batch of tanning same time used, time is 14-22h, after standing, add automatic alkali extracting agent 0.1-2.0g/L, regulate pH to 3.5-4.5, after rotating 5-10h, skin is taken out, standing control water, the waste liquid that takes a morsel is measured wherein chromium content, while amounting to into chromium powder content in order to next tanning, measurement standard is used, in owse, keep the skin wet, salt and chromium powder, making owse keep adding sulfuric acid to make sulfuric acid concentration after the state of initial owse is 0.1-1.0g/L, regulate pH to 2.0-3.0, ageing is carried out tanning next time after spending the night, the like carry out recycle,
Step 14, wet-milling: use wet wheeling machine to carry out wet-milling to the flesh noodles of crust leather after tanning, to flesh noodles uniformity;
Step 15, retanning: the crust leather after wet-milling is placed in to paddle-tumble retanning, in retanning liquid, the mass ratio of water and fur is 5-15, retanning liquid is with water meter, wherein formic acid concn is that 0.1-1.0g/L, chrome and aluminium tanning agent concentration are that 4g/L, fatting agent concentration are 1-5ml/L, containing chrome tanning agent concentration, are that 5g/L, chromium cross linker concentration are that 0.1-1.0g/L, chromium fixing agent concentration are 1-5g/L, temperature is controlled at 35-40 ℃, regulate pH to 3.0-3.5, after retanning 2-8h, add automatic alkali extracting agent 0.1-1.0g/L, regulate pH to 3.5-4.0, carry alkali and finish standing 14-19h after paddling 5-10h;
Step 10 six, neutralization: in neutralizer, the mass ratio of water and fur is 10-20, and neutralizer is with water meter, and wherein sodium formate concentrations is that 0.1-2.0g/L, sodium bicarbonate concentration are 0.1-1.0g/L, and temperature is controlled at 40-50 ℃, paddling 1-3h;
Step 10 seven, stuffing: in fat liquor, the mass ratio of water and fur is 10-20, fat liquor is with water meter, and wherein fatting agent concentration is 5-50ml/L, temperature 55-65 ℃;
Step 10 eight, retanning: the hair after edit is removed from office to retanning again, in retanning liquid, the mass ratio of water and fur is 5-15, retanning liquid is with water meter, wherein formic acid concn is 0.1-1.0g/L, chrome and aluminium tanning agent concentration is 4g/L, fatting agent concentration is 1-5ml/L, containing chrome tanning agent concentration, be 5g/L, chromium cross linker concentration is 0.1-1.0g/L, chromium fixing agent concentration is 1-5g/L, temperature is controlled at 35-40 ℃, regulate pH to 3.0-3.5, after retanning 2-8h, add automatic alkali extracting agent 0.1-1.0g/L, regulate pH to 3.5-4.0, carry alkali and finish standing over night after paddling 5-10h, time is 14-19h,
Step 10 nine, dye hair: by the emptying of retanning liquid, hair leather after retanning is dyed to hair, dying the mass ratio of water and fur in mao liquid is 10-20, dyes mao liquid with water meter, and wherein formic acid concn is 0.1-1.0g/L, to dye mao dye strength be that 0.1-1.0g/L, common salt concn are 5-10g/L, temperature is 60-80 ℃, paddling 2-7h, standing over night, the time is 17-22h;
Step 2 ten, dye plate: will dye a mao liquid emptying, the hair leather dying after hair is dyed to plate, dying the mass ratio of water and fur in plate liquid is 10-20, dye plate liquid with water meter, wherein formic acid concn is 0.1-1.0g/L, to dye plate dye strength be that 0.1-1.0g/L, common salt concn are 5-10g/L, and temperature is 20-30 ℃, paddling 2-7h, standing over night.
2. the Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather according to claim 1, is characterized in that, in described step 8, acid bating enzyme is 3350 aspartic proteases.
3. the Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather according to claim 1, is characterized in that, in described step 12 and step 13, each batch used the lamb skin of identical number.
4. the Chrome Tanning Liquor circulation process for tanning of sheep garment hair according to claim 1 leather, is characterized in that, in described step 12 and step 13, is: every lamb skin moisturizing 1L to the amount keeping the skin wet in owse.
5. the Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather according to claim 1, is characterized in that, in described step 12 and step 13, described grease dispersion agent is not containing alkylphenol and oxyethyl group alkyl phenol.
6. the Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather according to claim 1, is characterized in that, in described step 12 and step 13, described automatic alkali extracting agent covers the slow dissolubility of limiting property and carries alkaline agent for being with.
7. the Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather according to claim 1, is characterized in that, in described step 15, described chrome and aluminium tanning agent is the mixture of chromium sesquioxide and aluminium sesquioxide, mass ratio 2:1.
8. the Chrome Tanning Liquor circulation process for tanning of sheep garment hair leather according to claim 1, is characterized in that, described formic acid and sulfuric acid concentration are 85%.
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59199800A (en) * | 1983-04-28 | 1984-11-12 | 日本化学工業株式会社 | Manufacture of chromium-aluminum tanning agent |
| JPS638500A (en) * | 1986-06-27 | 1988-01-14 | 日本化学工業株式会社 | Chromium-aluminum tanning agent |
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2012
- 2012-01-13 CN CN201210009504.0A patent/CN102586505B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO102496A2 (en) * | 1988-10-25 | 1991-10-21 | Institutul De Cercetari Pielarie Si Incaltaminte, Bucuresti, Ro | Process for manufacturing complexes of chrome-aluminium for leathers tannage and retannage |
| CN1326004A (en) * | 2000-05-26 | 2001-12-12 | 吴佳 | Technology for tanning and dyeing lamb hide used as both fur and leather |
| CN1584055A (en) * | 2004-05-27 | 2005-02-23 | 邹福智 | Production of waistbands from cattle hide |
Non-Patent Citations (2)
| Title |
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| 但卫华等.绵羊光面服装毛革一体生产工艺及其点评.《西部皮革》.2007,第29卷(第2期),第3-8页. |
| 绵羊光面服装毛革一体生产工艺及其点评;但卫华等;《西部皮革》;20070218;第29卷(第2期);第4-8页 * |
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| CN102586505A (en) | 2012-07-18 |
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