CN104673943B - The preparation method of environmental and ecological aluming kip - Google Patents

The preparation method of environmental and ecological aluming kip Download PDF

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Publication number
CN104673943B
CN104673943B CN201310622193.XA CN201310622193A CN104673943B CN 104673943 B CN104673943 B CN 104673943B CN 201310622193 A CN201310622193 A CN 201310622193A CN 104673943 B CN104673943 B CN 104673943B
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water
kip
adds
stroke
formic acid
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CN104673943A (en
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润建中
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Jiyuan aojil Trading Co.,Ltd.
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Guang Yu Paper Industry Co Ltd Of Mengzhou City
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    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/04—Soaking
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/08—Deliming; Bating; Pickling; Degreasing
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C11/00—Surface finishing of leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/28—Multi-step processes
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C5/00—Degreasing leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/60—Optical bleaching or brightening
    • D06L4/614—Optical bleaching or brightening in aqueous solvents

Abstract

The invention discloses a kind of preparation method of environmental and ecological aluming kip.Raw material kip is soaked first, degreasing agent and soda ash are added during immersion, passes through shaving of soaking, fleshing；It is then placed in water, adds degreasing agent and soda ash carries out soak degreasing, secondary fleshing；It is subsequently added into water and carries out secondary immersion, softening, allowances for bark fleshing；Then pickling, softening are carried out, skin is gone out after pickling and stands two days；Then tanning is carried out, skin is gone out after tanning and stands two days, edit is carried out, is subsequently added into water, and adds syntans, fatting agent, formic acid and is soaked, goes out skin and stands one day, then carry out oxidation washing, reducing bleach, finally arranged, obtain product.Aluming kip is prepared using the present invention, can reduce environmental pollution, reduce the associated maintenance expense such as waste water treatment, so as to reduce production cost；And the properties of product prepared are excellent.

Description

The preparation method of environmental and ecological aluming kip
Technical field
The invention belongs to shearling industry processing and fabricating technical field, more particularly to a kind of environmental and ecological aluming kip Preparation method.
Background technology
In shearling manufacturing process, tanning is essential, very important process, is not by the skin of tanning Rawhide, it can not use；Rawhide is changed into removing from office after tanning, possesses the people such as softness, shelf-stable, water-permeable and air permeable, water-fastness institute Need, dress ornament performance.For a long time, the making processing of shearling use chrome tanning always, this method making shearling from Tanning processes can all cause seriously to pollute to sewage disposal to environment.In recent years, China is paid much attention to environmental protection work, greatly Energy-conservation, emission reduction, consumption-reducing technological and product, full-scale development production environmentally friendly machine are carried out in power exploitation.And the manufacturing of chrome tanning agent Larger pollution is also resulted in environment, is unfavorable for environmental protection.Therefore, environment protection ecological type shearling preparation method is developed to environment Protect significant.
At present, also there is the patent literature of correlation on shearling tanning preparation method.Such as：1st, Application No. The application for a patent for invention of the 201210351740.0th, entitled " tibet lamp ecological bating clean preparation method ", the patent producer Method generally comprises preparation before tan, degreasing, immersion, fleshing, degreasing, immersion, softening pickling, tanning, neutralization, wet-milling oxygen are washed, stuffing, Neutralize, go out the processes such as skin standing, arrangement.2nd, Application No. 200810182294.9, the entitled " side of making white tanned shearling The application for a patent for invention of method ", the preparation method generally comprise the preparatory stage（Pre- immersion, the wet bur, water dumping, wet cropping, secondary scraped The processes such as immersion, fleshing, deburring, rawhide degreasing, trine immersion, softening, pickling and standing）With the tanning stage（Including tanning, quiet Put, press oil, spraying water, wet-milling, washing, oxidation, washing, bleaching, washing, water dumping and leaching stuffing process）.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of environmental and ecological aluming kip.By this hair Bright technical scheme makes aluming kip, and caused sewage, pollutant are less in manufacturing process, are advantageous to environmental protection；And this hair The product of bright making have it is bright it is pure white, dermatotome is plentiful, frivolous soft, oxidation-reduction resistance can strong, acid and alkali-resistance, sweat proof, anti-corrosion Property it is strong, odorless, shrinkage temperature are high, elasticity is good and Color is good the features such as.Aluming sheep is prepared by the technology of the present invention method Lambskin can reduce environmental pollution, reduce the associated maintenance expense such as waste water treatment, so as to reduce production cost.
In order to solve the above problems, the technical scheme that the present invention takes is：
The present invention provides a kind of preparation method of environmental and ecological aluming kip, and the preparation method comprises the following steps：
A, soak：According to every chi2Kip adds the ratio of 4 liters of water, gets out normal-temperature water, and adds 0.5g/L immersions Agent, 1.0g/L anion degreasing agent, 1.0g/L nonionics degreasing agent and 0.5g/L soda ash, it is 7.0 that its pH value is uniformly surveyed in stroke afterwards, Skin is thrown until completely dissolved, raw material kip is then placed in and is soaked, and 10~15min of stroke, stands overnight per hour, cleaning Once, then shaving, fleshing；
B, degreasing：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, and water temperature risen into 35~38 DEG C, and 1.5~2g/L anion degreasing agent, 2.0g/L nonionics degreasing agent and 0.5g/L soda ash are added, stroke is uniform, surveys its pH value and is 7.0, it is then placed in the material after step a processing and carries out soak degreasing, soaks 2h, the stroke fur 10 per hour in immersion process ~15min, carry out secondary fleshing；
C, multiple immersion, softening：According to every chi2Kip adds the ratio of 4 liters of water, gets out normal-temperature water, and add 2g/L Anion degreasing agent, 1.0g/L nonionics degreasing agent, 1.0 g/L soaking enzymes, 0.5 g/L lipase, 0.5 g/L macerating enzymes and 1.2g/L fatty aldehyde strokes are uniform, the material then added after step b processing, add rear stroke 15min, stand overnight, survey it PH value is 6.0~6.5；Morning next day water temperature heating soaks 2~4h, fleshing is allowanced for bark after immersion on this condition to 35 DEG C；
D, pickling softens：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, and water temperature risen into 35 DEG C, and It is uniform to add 60 g/L salt, 1~2 g/L fatting agents and 3 g/L formic acid strokes, adds 1.5~2 g/L acid bating enzymes, it is thorough Skin stroke 30min is thrown per hour after the dissolving of bottom；The g/L formic acid of acidicenzym 537 and 2~4 is added after 6~12h and carries out pickling, it is acid The ratio that enzyme 537 adds 12~14 grams of acidicenzyms 537 according to every kip adds, then stroke 20min, and surveying its pH value is 2.8~3.0, it is 2.5~2.8 then to add sulfuric acid and adjust its pH value, soaked overnight, 15~20min of night stroke, next day Early go out skin and stand 1~2 day；
E, tanning：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 35 DEG C, Ran Houjia Material：50~60g/L of salt, the g/L of formic acid 0.3~0.5, the g/L of iron removing reagent 0.3~0.5, bleeding agent 1.0g/L, the g/L of tanning agent 5, 5~7g/L of the g/L of sodium formate 2 and soda ash；
Water, temperature are mixed up, and addition salt, formic acid, iron removing reagent, bleeding agent, tanning agent and sodium formate are required according to charging, It is uniform that various materials add rear stroke, and now pH value is 4.0, the kip then added after step d processing, adds rear stroke 10 ~15min, stop drawing, stay overnight, secondary daily 5~7g/L soda ash carries alkali, divides 6~8 times and carries alkali, and alkali is carried once per 30min；Make its pH value Go out skin after reaching 7~7.5,2 hours and stand 2 days；
F, arrange：Material after conventionally being stood to step e carries out water dumping, stretching, extension, wet-milling, natural drying, spray Water moisture regain, dry shovel and dry grinding；
G, fill：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, and water temperature risen into 35 DEG C, add 8~ 12g/L syntans strokes are uniform, then add the material after step f is arranged, add rear stroke 30min, left undisturbed overnight, next day Morning rotation is warming up to 35 DEG C, then addition 2g/L fatting agents and 0.5g/L formic acid, stroke 15min after addition formic acid, left undisturbed overnight, Morning next day is heated up to 35~38 DEG C, and it is 3.6~3.8 to survey its pH value, goes out skin and stands 1 day；
H, oxidation washing：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 40~45 DEG C, it is uniform then to add 3g/L hydrogen peroxide, 2g/L ammoniacal liquor and 1~2g/L anion degreasing agents, stroke；Then add at step g Material after reason, continuous stroke go out skin in 1.5~2 hours；Once, washing time is 10~20min for normal temperature washing after going out skin；
I, reducing bleach：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 55~60 DEG C, 3~4g/L bleaching agents, 0.2~0.4g/L fluorescent whitening agents and 1.5g/L formic acid are then added, stroke is uniform, surveys its pH value For 3.5~3.8, the material that then adds after step h processing, continuous stroke 60min goes out skin after adding, washing once, after washing Carry out water dumping, linked network is dried；
J, finally arrange：Conventionally dried material is got damp again, stretched, raising, carding, scald hair, cut Hair, classification trimming, maintenance and gage bundling storage.
According to the preparation method of above-mentioned environmental and ecological aluming kip, 60 g/L salt, 1~2 g/L are added in step d After fatting agent and 3 g/L formic acid strokes are uniform, its pH value is surveyed as 4.0~4.5.
According to the preparation method of above-mentioned environmental and ecological aluming kip, sodium formate adds at twice in step e, and two take second place Between be spaced 60min.
Added according to the preparation method of above-mentioned environmental and ecological aluming kip, described in step g 2g/L fatting agents and 0.5g/L formic acid, wherein formic acid add four times, and it is 60min that four times, which add time interval,.
According to the preparation method of above-mentioned environmental and ecological aluming kip, 1.5g/L formic acid adds twice described in step i, 0.5g/L formic acid is added for the first time, and 1.0g/L formic acid is added after 30 minutes.
The positive beneficial effect of the present invention：
By technical solution of the present invention making aluming kip, caused sewage, pollutant are less in manufacturing process, favorably In environmental protection；And the product that makes of the present invention have it is bright it is pure white, dermatotome is plentiful, frivolous soft, oxidation-reduction resistance can be strong, resistance to The features such as soda acid, sweat proof, anti-corrosive properties are strong, odorless, shrinkage temperature are high, elasticity is good and Color is good.Pass through the technology of the present invention Method prepares aluming kip and can reduce environmental pollution, reduce the associated maintenance expense such as waste water treatment, so as to reduce production Cost.
Embodiment：
The present invention is expanded on further with reference to embodiments, but is not intended to limit present disclosure.
Embodiment 1：
The preparation method of the environmental and ecological aluming kip of the present invention, the detailed step of the preparation method are as follows：
A, soak：According to every chi2Kip adds the ratio of 4 liters of water, gets out normal-temperature water, and adds 0.5g/L immersions Agent, 1.0g/L anion degreasing agent, 1.0g/L nonionics degreasing agent and 0.5g/L soda ash, it is 7.0 that its pH value is uniformly surveyed in stroke afterwards, Skin is thrown until completely dissolved, raw material kip is then placed in and is soaked, and 10~15min of stroke, stands overnight per hour, cleaning Once, then shaving, fleshing；
B, degreasing：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, and water temperature risen into 35~38 DEG C, and 1.5~2g/L anion degreasing agent, 2.0g/L nonionics degreasing agent and 0.5g/L soda ash are added, stroke is uniform, surveys its pH value and is 7.0, it is then placed in the material after step a processing and carries out soak degreasing, soaks 2h, the stroke fur 10 per hour in immersion process ~15min, carry out secondary fleshing；
C, multiple immersion, softening：According to every chi2Kip adds the ratio of 4 liters of water, gets out normal-temperature water, and add 2g/L Anion degreasing agent, 1.0g/L nonionics degreasing agent, 1.0 g/L soaking enzymes, 0.5 g/L lipase, 0.5 g/L macerating enzymes and 1.2g/L fatty aldehyde strokes are uniform, the material then added after step b processing, add rear stroke 15min, stand overnight, survey it PH value is 6.0~6.5；Morning next day water temperature heating soaks 2~4h, fleshing is allowanced for bark after immersion on this condition to 35 DEG C；
D, pickling softens：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, and water temperature risen into 35 DEG C, and It is uniform to add 60 g/L salt, 1~2 g/L fatting agents and 3 g/L formic acid strokes, it is 4.0~4.5 to survey its pH value, addition 1.5~ 2 g/L acid bating enzymes, skin stroke 30min is thoroughly thrown per hour after dissolving；The g/L of acidicenzym 537 and 2~4 is added after 6~12h Formic acid carries out pickling, and the ratio that acidicenzym 537 adds 12~14 grams of acidicenzyms 537 according to every kip adds, then stroke 20min, it is 2.8~3.0 to survey its pH value, and it is 2.5~2.8 then to add sulfuric acid and adjust its pH value, soaked overnight, night stroke one Secondary 15~20min, next day early go out skin and stand 1~2 day；
E, tanning：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 35 DEG C, Ran Houjia Material：50~60g/L of salt, the g/L of formic acid 0.3~0.5, the g/L of iron removing reagent 0.3~0.5, bleeding agent 1.0g/L, the g/L of tanning agent 5, The g/L of sodium formate 2（Sodium formate adds at twice, twice between be spaced 60min）With 5~7g/L of soda ash；
Water, temperature are mixed up, and addition salt, formic acid, iron removing reagent, bleeding agent, tanning agent and sodium formate are required according to charging, It is uniform that various materials add rear stroke, and now pH value is 4.0, the kip then added after step d processing, adds rear stroke 10 ~15min, stop drawing, stay overnight, secondary daily 5~7g/L soda ash carries alkali, divides 6~8 times and carries alkali, and alkali is carried once per 30min；Make its pH value Go out skin after reaching 7~7.5,2 hours and stand 2 days；
F, arrange：Material after conventionally being stood to step e carries out water dumping, stretching, extension, wet-milling, natural drying, spray Water moisture regain, dry shovel and dry grinding；
G, fill：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, and water temperature risen into 35 DEG C, add 8~ 12g/L syntans strokes are uniform, then add the material after step f is arranged, add rear stroke 30min, left undisturbed overnight, next day Morning rotation is warming up to 35 DEG C, then adds 2g/L fatting agents and 0.5g/L formic acid（Formic acid adds four times, four addition time intervals It is 60min）, add stroke 15min after formic acid, left undisturbed overnight, morning next day is heated up to 35~38 DEG C, survey its pH value for 3.6~ 3.8, go out skin and stand 1 day；
H, oxidation washing：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 40~45 DEG C, it is uniform then to add 3g/L hydrogen peroxide, 2g/L ammoniacal liquor and 1~2g/L anion degreasing agents, stroke；Then add at step g Material after reason, continuous stroke go out skin in 1.5~2 hours；Once, washing time is 10~20min for normal temperature washing after going out skin；
I, reducing bleach：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 55~60 DEG C, then add 3~4g/L bleaching agents, 0.2~0.4g/L fluorescent whitening agents and 1.5g/L formic acid（1.5g/L formic acid adds twice Enter, add 0.5g/L formic acid for the first time, 1.0g/L formic acid is added after 30 minutes）, stroke is uniform, and it is 3.5~3.8 to survey its pH value, Then the material added after step h processing, continuous stroke 60min goes out skin after adding, and washing once, after washing carries out water dumping, hung Net drying；
J, finally arrange：Conventionally dried material is got damp again, stretched, raising, carding, scald hair, cut Hair, classification trimming, maintenance and gage bundling storage.

Claims (5)

1. a kind of preparation method of environmental and ecological aluming kip, it is characterised in that the preparation method comprises the following steps：
A, soak：According to every chi2Kip add 4 liters of water ratio, get out normal-temperature water, and add 0.5g/L immersion agent, 1.0g/L anion degreasing agent, 1.0g/L nonionics degreasing agent and 0.5g/L soda ash, it is 7.0 that its pH value is uniformly surveyed in stroke afterwards, is treated Skin is thrown after being completely dissolved, raw material kip is then placed in and is soaked, 10~15min of stroke, stands overnight per hour, cleaning one It is secondary, then shaving, fleshing；
B, degreasing：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 35~38 DEG C, and add 1.5~2g/L anion degreasing agent, 2.0g/L nonionics degreasing agent and 0.5g/L soda ash, stroke is uniform, and it is 7.0 to survey its pH value, Be then placed in step a processing after material carry out soak degreasing, soak 2h, in immersion process per hour stroke fur 10~ 15min, carry out secondary fleshing；
C, multiple immersion, softening：According to every chi2Kip adds the ratio of 4 liters of water, gets out normal-temperature water, and add 2g/L anion Degreasing agent, 1.0g/L nonionics degreasing agent, 1.0 g/L soaking enzymes, 0.5 g/L lipase, 0.5 g/L macerating enzymes and 1.2g/L fat Fat aldehyde stroke is uniform, the material then added after step b processing, adds rear stroke 15min, stands overnight, and surveys its pH value as 6.0 ~6.5；Morning next day water temperature heating soaks 2~4h, fleshing is allowanced for bark after immersion on this condition to 35 DEG C；
D, pickling softens：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 35 DEG C, and add 60 G/L salt, 1~2 g/L fatting agents and 3 g/L formic acid strokes are uniform, add 1.5~2 g/L acid bating enzymes, thoroughly after dissolving Skin stroke 30min is thrown per hour；Acidicenzym 537 and 2~4 g/L formic acid is added after 6~12h and carries out pickling, acidicenzym 537 according to The ratio that every kip adds 12~14 grams of acidicenzyms 537 adds, then stroke 20min, and it is 2.8~3.0 to survey its pH value, so It is 2.5~2.8 to add sulfuric acid afterwards and adjust its pH value, soaked overnight, 15~20min of night stroke, and next day early goes out skin and stands 1 ~2 days；
E, tanning：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 35 DEG C, then fed：Food 50~60g/L of salt, the g/L of formic acid 0.3~0.5, the g/L of iron removing reagent 0.3~0.5, bleeding agent 1.0g/L, the g/L of tanning agent 5, sodium formate 5~7g/L of 2 g/L and soda ash；
Water, temperature are mixed up, and addition salt, formic acid, iron removing reagent, bleeding agent, tanning agent and sodium formate are required according to charging, it is various It is uniform that material adds rear stroke, and now pH value is 4.0, the kip then added after step d processing, add rear stroke 10~ 15min, stop drawing, stay overnight, secondary daily 5~7g/L soda ash carries alkali, divides 6~8 times and carries alkali, and alkali is carried once per 30min；Reach its pH value Go out skin after by 7~7.5,2 hours and stand 2 days；
F, arrange：Material after conventionally being stood to step e carries out water dumping, stretching, extension, wet-milling, natural drying, sprayed water back Tide, dry shovel and dry grinding；
G, fill：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, and water temperature is risen into 35 DEG C, adds 8~12g/L Syntans stroke is uniform, then adds the material after step f is arranged, and adds rear stroke 30min, left undisturbed overnight, and morning next day turns It is dynamic to be warming up to 35 DEG C, 2g/L fatting agents and 0.5g/L formic acid are then added, adds stroke 15min after formic acid, left undisturbed overnight, next day Morning is heated up to 35~38 DEG C, and it is 3.6~3.8 to survey its pH value, goes out skin and stands 1 day；
H, oxidation washing：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 40~45 DEG C, then It is uniform to add 3g/L hydrogen peroxide, 2g/L ammoniacal liquor and 1~2g/L anion degreasing agents, stroke；Then the thing added after step g processing Material, continuous stroke go out skin in 1.5~2 hours；Once, washing time is 10~20min for normal temperature washing after going out skin；
I, reducing bleach：According to every chi2Kip adds the ratio of 4 liters of water, gets out water, water temperature is risen into 55~60 DEG C, then Add 3~4g/L bleaching agents, 0.2~0.4g/L fluorescent whitening agents and 1.5g/L formic acid, stroke is uniform, survey its pH value for 3.5~ 3.8, the material then added after step h processing, continuous stroke 60min goes out skin after adding, and washing once, is got rid of after washing Water, linked network are dried；
J, finally arrange：Conventionally dried material is got damp again, stretched, raising, carding, scald hair, cropping, point Class trimming, maintenance and gage bundling storage.
2. the preparation method of environmental and ecological aluming kip according to claim 1, it is characterised in that：Added in step d 60 g/L salt, 1~2 g/L fatting agents and 3 g/L formic acid strokes it is uniform after, survey its pH value as 4.0~4.5.
3. the preparation method of environmental and ecological aluming kip according to claim 1, it is characterised in that：Formic acid in step e Sodium adds at twice, twice between be spaced 60min.
4. the preparation method of environmental and ecological aluming kip according to claim 1, it is characterised in that：Described in step g 2g/L fatting agents and 0.5g/L formic acid are added, wherein formic acid adds four times, and it is 60min that four times, which add time interval,.
5. the preparation method of environmental and ecological aluming kip according to claim 1, it is characterised in that：Described in step i 1.5g/L formic acid is added twice, adds 0.5g/L formic acid for the first time, and 1.0g/L formic acid is added after 30 minutes.
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