CN105506196A - Preparation process for pig skin top layer instep leather free of chrome tanning - Google Patents
Preparation process for pig skin top layer instep leather free of chrome tanning Download PDFInfo
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- CN105506196A CN105506196A CN201610050180.3A CN201610050180A CN105506196A CN 105506196 A CN105506196 A CN 105506196A CN 201610050180 A CN201610050180 A CN 201610050180A CN 105506196 A CN105506196 A CN 105506196A
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- preparation technology
- retanning
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- 239000010985 leather Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000004043 dyeing Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005238 degreasing Methods 0.000 claims abstract description 8
- 238000005554 pickling Methods 0.000 claims abstract description 8
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 45
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 28
- 238000005516 engineering process Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 15
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 14
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 14
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 13
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 11
- 239000003112 inhibitor Substances 0.000 claims description 10
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- TUBQDCKAWGHZPF-UHFFFAOYSA-N 1,3-benzothiazol-2-ylsulfanylmethyl thiocyanate Chemical compound C1=CC=C2SC(SCSC#N)=NC2=C1 TUBQDCKAWGHZPF-UHFFFAOYSA-N 0.000 claims description 5
- 235000007627 Caesalpinia Nutrition 0.000 claims description 5
- 241000522234 Caesalpinia Species 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 230000005012 migration Effects 0.000 claims description 5
- 238000013508 migration Methods 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000001648 tannin Substances 0.000 claims description 5
- 235000018553 tannin Nutrition 0.000 claims description 5
- 229920001864 tannin Polymers 0.000 claims description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 4
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 235000013311 vegetables Nutrition 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 235000021323 fish oil Nutrition 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- AWUCVROLDVIAJX-UHFFFAOYSA-N glycerol 1-phosphate Chemical compound OCC(O)COP(O)(O)=O AWUCVROLDVIAJX-UHFFFAOYSA-N 0.000 claims description 3
- 235000019198 oils Nutrition 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 238000006277 sulfonation reaction Methods 0.000 claims description 3
- 238000010257 thawing Methods 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- JPMIIZHYYWMHDT-UHFFFAOYSA-N octhilinone Chemical compound CCCCCCCCN1SC=CC1=O JPMIIZHYYWMHDT-UHFFFAOYSA-N 0.000 claims description 2
- 238000005987 sulfurization reaction Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 description 5
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000283707 Capra Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 glutaraldehyde aldehyde Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- 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
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/10—Vegetable tanning
- C14C3/12—Vegetable tanning using purified or modified vegetable tanning agents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention belongs to the field of instep leather preparation processes, and particularly relates to a preparation process for pig skin top layer instep leather free of chrome tanning. The preparation process comprises the following steps that from pickled skin scytoblastema, the addition quantity of additives in all the procedures is based on the mass of pickled skin, and pickling and softening, main tanning, degreasing and softening, retanning, water extruding and neutralizing, dyeing and stuffing and staking and spouting are included. The preparation process for the pig skin top layer instep leather free of chrome tanning has the advantages that the steps are simple, preparation efficiency is high, the requirement of the preparation process for equipment is low, energy saving and environment friendliness are achieved, and the prepared instep leather is resistant to wear and high temperature, full and soft.
Description
Technical field
The invention belongs to upper leather preparation technology field, particularly relate to a kind of without chrome tanning pigskin head layer upper leather preparation technology.
Background technology
Curriery is the important traditional light industry of China, is also one of comparatively serious industry of blowdown.Traditional leather many employings chromium makes tanning agent, the chrome tanned leather that processing obtains has high temperature resistant, Heat stability is good, leather body is plentiful, soft advantage, but because the heavy metal contamination that chromium ore resource is limited and chrome tanning produces, in people's pay attention to day by day living environment, pay close attention to the today using environmental protection leather, development becomes inexorable trend without chrome tanning leather.
The Chinese invention patent that patent publication No. is CN101225450A, publication date is 2008.07.23 discloses the chrome-free tanning production technique of a kind of goat skin gloves leather, include following step, softening → pickling → organic phosphine tanning → be oxidized → take horse to leave standstill → water squeezing stretching, extension → shaving → washing → degreasing, rinsing → washing → using brother chemicals → washing, then chrome tanning subsequent technique routinely carries out.
But it is complicated to there is tanning step in the production technique of this invention, and efficiency is low, and the glove leather of tanning is of poor quality, plentiful not, problem soft not.
Summary of the invention
The object of this invention is to provide a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is simple that it has step, and preparation efficiency is high, and the upper leather preparing gained is wear-resisting, high temperature resistant, plentiful, soft advantage.
The technical scheme that the present invention overcomes the above problems employing is: a kind of without chrome tanning pigskin head layer upper leather preparation technology, comprise the following steps (from sour skin scytoblastema, the addition of each operation additive with the quality of sour skin for benchmark): pickling eases back, main tanning, degreasing eases back, retanning, water squeezing neutralizes, dyeing and fat-liquoring and draw soft whitewashing, the described pickling liquor ratio in step that eases back is 200%, add the sulfuric acid of 1.0-1.2%, the Industrial Salt of 10-12%, pH is 1.8-2.3, temperature is 25-28 DEG C, the time of easing back is 120-150min, chrome-free tanning agent is adopted in described main tanning step, comprise aluminum tanning agent and glutaraldehyde aldehyde tanning agent, pH scope divides three phases, early stage is 3.2-3.3, sodium formiate and sodium bicarbonate adjustment is added by first time, mid-term is 3.5-3.6, add sodium formiate by second time to regulate, later stage is 4.0-4.5, add sodium bicarbonate by second time to regulate, temperature is 33-35 DEG C, the described degreasing liquor ratio in step that eases back is 100%, add the oxalic acid of 1.0-1.2% and the grease-removing agent of 1.0-1.5%, pH is 3.2-3.3, temperature is 45-48 DEG C, the time of easing back is 60-65min, composite tanning agent is adopted in described retanning step, liquor ratio is 100%, pH is 4.2-4.3, retanning temperature is 32-35 DEG C, the neutralizing agent adopted in described water squeezing neutralization procedure is sodium formiate and sodium bicarbonate, pH is 5.8-6.0, temperature is 30-32 DEG C, in and the time be 90-100min, cationic fat liquor is adopted in described dyeing and fat-liquoring step, pH is 3.8-4.0, temperature is 52-55 DEG C, described drawing in soft whitewashing step draws soft operation and whitewashing operation to hocket, comprise altogether 3-4 group and draw soft whitewashing operation.It is simple that the preparation technology of the layer of pigskin head described in this setting upper leather has step, and preparation efficiency is high, the advantage of the low and energy-conserving and environment-protective of the requirement of preparation process to equipment.
Preferred technical scheme is further: before adding described tanning agent, first add sodium formiate in described main tanning step, sodium bicarbonate and phospho-glycerol three ester, stir 60-70min, the amount adding described aluminum tanning agent is successively 2.0-2.2%, described glutaraldehyde tanning agent is 6.0-6.5%, the amount of described glutaraldehyde tanning agent evenly divides three parts, successively add respectively for three times, and constantly stir, add other compositions of becoming owner of in tanning afterwards again, add sodium formiate successively, antioxidant, tannin, iron powder, mould inhibitor and sodium bicarbonate, the scope of the amount of described main tanning ancillary component is 8.0-12.0%, finally stir 300-500min.Each inherent regulation after in before the pH of main tanning step described in this setting, improves the effect of described main tanning, makes the leather of tanning more plentiful, soft.
Preferred technical scheme is further: described mould inhibitor comprises TCMTB(2-thiocyanogen methyl sulfuration benzothiazole) and OIT(octylisothiazolinone), the mass ratio of described TCMTB and described OIT consumption is 1:1-1:2.
Preferred technical scheme is further: the amount that described second time sodium bicarbonate adds is 1.5-2.0%, is divided into five times and adds, every minor tick 30-35min.
Further preferred technical scheme is: carry out after described main tanning step that drum takes that horse leaves standstill successively, setting-out, get rid of soft and shaving deburring step, the bilayer thickness controlling described leather in described shaving step is 2.0-2.4mm.
Further preferred technical scheme is: the composite tanning agent adopted in described retanning step comprises acrylate resin tanning agent, the Caesalpinia spinosaKuntze vegetable tanning agent of improvement and glutaraldehyde tanning agent, the amount that described acrylate resin tanning agent adds is 2.0-2.5%, the amount that the Caesalpinia spinosaKuntze vegetable tanning agent of described improvement adds is 2.2-2.5%, add rear stirring 90-100min, add retanning ancillary component afterwards, then stir 250-300min.
Preferred technical scheme is further: described retanning ancillary component comprises toughner, surfactivity defrosting compound and retanning filler, and the sodium bicarbonate finally adding 1.0-1.2% regulates pH to be 4.2-4.3, and the amount that described retanning ancillary component adds is 6.0-8.5%.
Preferred technical scheme is further: add the vulcanization accelerator for improving leather machine performance in described water squeezing neutralization procedure, the amount added is 1.0-1.2%.
Preferred technical scheme is further: described dyeing and fat-liquoring step is divided into dyeing process and stuffing operation, dyestuff, diffusant, migration inhibitor and surface active agent is added in described dyeing process, the total amount that described diffusant, migration inhibitor and surface active agent add is 7.0-9.5%, the fatting agent added in described stuffing operation comprises sulfonation synthetic oil and sulfited fish oil, the total amount added is 6.0-8.0%, finally regulates pH and stirs.
Preferred technical scheme is further: described in described dyeing and fat-liquoring step, dyeing process and stuffing operation add the formic acid of 1.5-1.8% as neutralizing agent after all completing, and adjustment pH is 3.9-4.0, finally stirs, and churning time is 100-120min.
The invention provides a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is simple that it has step, and preparation efficiency is high, and preparation process is low for equipment requirements, energy-conserving and environment-protective, and the upper leather preparing gained is wear-resisting, high temperature resistant, plentiful, soft advantage.
Embodiment
The following stated is only preferred embodiment of the present invention, non-ly limits scope of the present invention.
Embodiment: a kind of without chrome tanning pigskin head layer upper leather preparation technology, comprise the following steps (from sour skin scytoblastema, the addition of each operation additive with the quality of sour skin for benchmark): pickling eases back, main tanning, degreasing ease back, retanning, water squeezing neutralization, dyeing and fat-liquoring and draw soft whitewashing, the following detailed description of the specific embodiment of the present invention:
Operation consumption materials temperature-time remarks
Pickling eases back 10% Industrial Salt, 25 DEG C of liquor ratios 200%
1.0% sulfuric acid 120minpH1.8
Main tanning 1.0% sodium formiate
0.5% sodium bicarbonate 30minpH3.0
0.5% phospho-glycerol three ester 30min
2.0% aluminum tanning agent 60min
2.0% glutaraldehyde tanning agent 60min
2.0% glutaraldehyde tanning agent 60min
2.0% glutaraldehyde tanning agent 90min
1.0% sodium formiate 30minpH3.5
1.0% antioxidant 10min
2.0% tannin 30min
2.0% tannin 30min
2.0% tannin 90min
0.2% iron powder
0.1% mould inhibitor 30min(TCMTB:OIT=1:1)
1.5% sodium bicarbonate 30 × 5minpH4.0
(be warming up to 35 DEG C, stir 300min, then stop drum and spend the night)
Go out drum and take that horse leaves standstill, setting-out gets rid of soft, shaving deburring, bilayer thickness 2.0mm
Degreasing eases back 1.0% oxalic acid, 45 DEG C of liquor ratios 100%
1.0% grease-removing agent 60minpH3.2
25 DEG C of washing 30min
Retanning 2.0% acrylic tanning agent 32 DEG C of 30min liquor ratios 100%
2.0% Caesalpinia spinosaKuntze tanning agent 30min
2.0% glutaraldehyde tanning agent 60min
2.0% toughner 30min
1.0% active defrosting compound 40min
2.0% retanning filler 60min
1.0% sodium bicarbonate 30 × 3minpH4.2
With 1.0% vulcanization accelerator 30 DEG C in water squeezing
1.0% sodium formiate
2.0% sodium bicarbonate 90minpH5.8
25 DEG C of washing 30min
Dyeing and fat-liquoring dyestuff 52 DEG C
1.0% diffusant
2.0% migration inhibitor
4.0% surface active agent 45min
3.0% sulfonation synthetic oil
2.0% sulfited fish oil 50min
1.5% formic acid 30 × 2minpH3.8
Cooling take out, hang dry in the air get rid of soft, toggling deburring, continuous three times whitewashing draw soft, deburring dipping put in storage
Above embodiments of the present invention are explained in detail, but the invention is not restricted to above-mentioned embodiment, in the ken that described technical field those of ordinary skill possesses, various amendment can also be made under the prerequisite not departing from present inventive concept.These are all not creative amendments, as long as be all subject to the protection of patent law in right of the present invention.
Claims (10)
1. one kind without chrome tanning pigskin head layer upper leather preparation technology, comprise the following steps (from sour skin scytoblastema, the addition of each operation additive with the quality of sour skin for benchmark): pickling eases back, main tanning, degreasing eases back, retanning, water squeezing neutralizes, dyeing and fat-liquoring and draw soft whitewashing, it is characterized in that: the described pickling liquor ratio in step that eases back is 200%, add the sulfuric acid of 1.0-1.2%, the Industrial Salt of 10-12%, pH is 1.8-2.3, temperature is 25-28 DEG C, the time of easing back is 120-150min, chrome-free tanning agent is adopted in described main tanning step, comprise aluminum tanning agent and glutaraldehyde tanning agent, pH scope divides three phases, early stage is 3.2-3.3, sodium formiate and sodium bicarbonate adjustment is added by first time, mid-term is 3.5-3.6, add sodium formiate by second time to regulate, later stage is 4.0-4.5, add sodium bicarbonate by second time to regulate, temperature is 33-34 DEG C, the described degreasing liquor ratio in step that eases back is 100%, add the oxalic acid of 1.0-1.2% and the grease-removing agent of 1.0-1.5%, pH is 3.2-3.3, temperature is 45-48 DEG C, the time of easing back is 60-65min, composite tanning agent is adopted in described retanning step, liquor ratio is 100%, pH is 4.2-4.3, retanning temperature is 32-35 DEG C, the neutralizing agent adopted in described water squeezing neutralization procedure is sodium formiate and sodium bicarbonate, pH is 5.8-6.0, temperature is 30-32 DEG C, in and the time be 90-100min, cationic fat liquor is adopted in described dyeing and fat-liquoring step, pH is 3.8-4.0, temperature is 52-55 DEG C, described drawing in soft whitewashing step draws soft operation and whitewashing operation to hocket, comprise altogether 3-4 group and draw soft whitewashing operation.
2. according to claim 1 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: in described main tanning step, before adding described tanning agent, first add sodium formiate, sodium bicarbonate and phospho-glycerol three ester, stir 60-70min, the amount adding described aluminum tanning agent is successively 2.0-2.2%, described glutaraldehyde tanning agent is 6.0-6.5%, the amount of described glutaraldehyde tanning agent evenly divides three parts, successively add respectively for three times, and constantly stir, add other compositions of becoming owner of in tanning afterwards again, add sodium formiate successively, antioxidant, tannin, iron powder, mould inhibitor and sodium bicarbonate, the scope of the amount of described main tanning ancillary component is 8.0-12.0%, finally stir 300-500min.
3. according to claim 2 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: described mould inhibitor comprises TCMTB(2-thiocyanogen methyl sulfuration benzothiazole) and OIT(octylisothiazolinone), the mass ratio of described TCMTB and described OIT consumption is 1:1-1:2.
4. according to claim 2 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: the amount that described second time sodium bicarbonate adds is 1.5-2.0%, be divided into five times and add, every minor tick 30-35min.
5. according to claim 1 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: carry out drum after described main tanning step successively and take horse and leave standstill, setting-out, get rid of soft and shaving deburring step, the bilayer thickness controlling described leather in described shaving step is 2.0-2.4mm.
6. according to claim 1 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: the composite tanning agent adopted in described retanning step comprises acrylate resin tanning agent, the Caesalpinia spinosaKuntze vegetable tanning agent of improvement and glutaraldehyde tanning agent, the amount that described acrylate resin tanning agent adds is 2.0-2.5%, the amount that the Caesalpinia spinosaKuntze vegetable tanning agent of described improvement adds is 2.2-2.5%, add rear stirring 90-100min, add retanning ancillary component afterwards, then stir 250-300min.
7. according to claim 6 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: described retanning ancillary component comprises toughner, surfactivity defrosting compound and retanning filler, finally adding sodium bicarbonate regulates pH to be 4.2-4.3, and the amount that described retanning ancillary component adds is 6.0-8.5%.
8. according to claim 1 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: add the vulcanization accelerator for improving leather machine performance in described water squeezing neutralization procedure, the amount added is 1.0-1.2%.
9. according to claim 1 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: described dyeing and fat-liquoring step is divided into dyeing process and stuffing operation, dyestuff, diffusant, migration inhibitor and surface active agent is added in described dyeing process, the total amount that described diffusant, migration inhibitor and surface active agent add is 7.0-9.5%, the fatting agent added in described stuffing operation comprises sulfonation synthetic oil and sulfited fish oil, the total amount added is 6.0-8.0%, finally regulates pH and stirs.
10. according to claim 9 a kind of without chrome tanning pigskin head layer upper leather preparation technology, it is characterized in that: described in described dyeing and fat-liquoring step, dyeing process and stuffing operation add the formic acid of 1.5-1.8% as neutralizing agent after all completing, adjustment pH is 3.9-4.0, finally stir, churning time is 100-120min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050180.3A CN105506196B (en) | 2016-01-26 | 2016-01-26 | One kind is without chrome tanning pigskin head layer upper leather preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050180.3A CN105506196B (en) | 2016-01-26 | 2016-01-26 | One kind is without chrome tanning pigskin head layer upper leather preparation technology |
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| CN105506196A true CN105506196A (en) | 2016-04-20 |
| CN105506196B CN105506196B (en) | 2017-11-17 |
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| CN201610050180.3A Active CN105506196B (en) | 2016-01-26 | 2016-01-26 | One kind is without chrome tanning pigskin head layer upper leather preparation technology |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105950793A (en) * | 2016-06-01 | 2016-09-21 | 际华三五二皮革服装有限公司 | Production method of semi-vegetable tanning goat clothing leather |
| CN106350618A (en) * | 2016-08-30 | 2017-01-25 | 晋江市永建皮革制品有限公司 | Making method of breathable and environmentally friendly leather |
| CN106544451A (en) * | 2016-12-07 | 2017-03-29 | 兴业皮革科技股份有限公司 | A kind of method that inferior grade wet blue leather is become into high-grade white wet leather |
| CN108424984A (en) * | 2018-03-02 | 2018-08-21 | 浙江华祥皮革有限公司 | A kind of preparation method of sofa leather |
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| CN105950793A (en) * | 2016-06-01 | 2016-09-21 | 际华三五二皮革服装有限公司 | Production method of semi-vegetable tanning goat clothing leather |
| CN105950793B (en) * | 2016-06-01 | 2018-01-19 | 际华三五一二皮革服装有限公司 | The preparation method of the vegetable tanning clothing leather of goat half |
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| CN106350618B (en) * | 2016-08-30 | 2018-06-29 | 晋江市永建皮革制品有限公司 | The production method of breathable environment-protective leather |
| CN106544451A (en) * | 2016-12-07 | 2017-03-29 | 兴业皮革科技股份有限公司 | A kind of method that inferior grade wet blue leather is become into high-grade white wet leather |
| CN106544451B (en) * | 2016-12-07 | 2019-01-04 | 兴业皮革科技股份有限公司 | A method of inferior grade wet blue leather is become into high-grade white wet leather |
| CN111051538A (en) * | 2017-08-23 | 2020-04-21 | Db专利有限公司 | Process for tanning animal skins using dialdehydes |
| CN111051538B (en) * | 2017-08-23 | 2023-01-17 | Db专利有限公司 | Method for tanning animal skins using dialdehydes |
| CN108424984A (en) * | 2018-03-02 | 2018-08-21 | 浙江华祥皮革有限公司 | A kind of preparation method of sofa leather |
| CN108424984B (en) * | 2018-03-02 | 2020-09-08 | 旌德君创科技发展有限公司 | Preparation method of sofa leather |
| CN108728593A (en) * | 2018-05-04 | 2018-11-02 | 明新旭腾新材料股份有限公司 | A kind of preparation method of low fogging value eco-car leather |
| CN113474159A (en) * | 2019-02-26 | 2021-10-01 | 伊科斯克有限公司 | Leather shoes |
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Denomination of invention: Preparation process of chrome free tanned pig leather upper layer leather Effective date of registration: 20231227 Granted publication date: 20171117 Pledgee: Bank of Huzhou Co.,Ltd. Pledgor: Haining Home Textile Industrial Base Investment Development Co.,Ltd. Registration number: Y2023980073645 |