CN118109652A - Manufacturing method of environment-friendly chromium-free anti-velvet leather - Google Patents
Manufacturing method of environment-friendly chromium-free anti-velvet leather Download PDFInfo
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- CN118109652A CN118109652A CN202410410116.6A CN202410410116A CN118109652A CN 118109652 A CN118109652 A CN 118109652A CN 202410410116 A CN202410410116 A CN 202410410116A CN 118109652 A CN118109652 A CN 118109652A
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- 239000010985 leather Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000005406 washing Methods 0.000 claims abstract description 22
- 238000004043 dyeing Methods 0.000 claims abstract description 12
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 238000001291 vacuum drying Methods 0.000 claims abstract description 9
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 42
- 239000001648 tannin Substances 0.000 claims description 34
- 229920001864 tannin Polymers 0.000 claims description 34
- 235000018553 tannin Nutrition 0.000 claims description 34
- 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 21
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 235000019253 formic acid Nutrition 0.000 claims description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 102000004190 Enzymes Human genes 0.000 claims description 7
- 108090000790 Enzymes Proteins 0.000 claims description 7
- 238000005237 degreasing agent Methods 0.000 claims description 7
- 239000013527 degreasing agent Substances 0.000 claims description 7
- 239000004166 Lanolin Substances 0.000 claims description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 6
- 125000002091 cationic group Chemical group 0.000 claims description 6
- 229940039717 lanolin Drugs 0.000 claims description 6
- 235000019388 lanolin Nutrition 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 6
- 229940001584 sodium metabisulfite Drugs 0.000 claims description 6
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 6
- 239000008234 soft water Substances 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 5
- 239000005695 Ammonium acetate Substances 0.000 claims description 5
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 5
- 239000004280 Sodium formate Substances 0.000 claims description 5
- 235000019257 ammonium acetate Nutrition 0.000 claims description 5
- 229940043376 ammonium acetate Drugs 0.000 claims description 5
- 239000001099 ammonium carbonate Substances 0.000 claims description 5
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 5
- 235000019254 sodium formate Nutrition 0.000 claims description 5
- 239000003112 inhibitor Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002192 fatty aldehydes Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 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
- C14C1/04—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
- C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or 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
-
- 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
- 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
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/32—Material containing basic nitrogen containing amide groups leather skins
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a manufacturing method of an environment-friendly chromium-free anti-napping leather, and belongs to the technical field of leather. The method comprises the following steps: rewetting, retanning, neutralizing, pre-fatliquoring, dyeing, main fatliquoring, fixing, washing water, draining, vacuum drying, hanging and airing, softening, grinding skin and tumbling. The prepared leather product adopts a chromium-free processing technology, and the natural health characteristics can be naturally degraded without causing secondary pollution to the environment.
Description
Technical Field
The invention belongs to the technical field of leather, and particularly relates to a manufacturing method of an environment-friendly chromium-free anti-velvet leather.
Background
The invention patent application of China with the application number 201610050182.2 discloses a preparation process of chrome-free tanning pig leather head layer reverse suede clothing leather, which adopts a chrome-free tanning technology, but has the advantages of complex process, low production efficiency and low product performance.
Therefore, it is necessary to provide a manufacturing method of the environment-friendly chromium-free anti-velvet leather, which improves the yield and the performance of the product.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a manufacturing method of an environment-friendly chromium-free anti-velvet leather.
The invention adopts the following technical scheme:
the preparation method of the environment-friendly chromium-free anti-velvet leather comprises the following steps:
Rewetting, retanning, neutralizing, pre-fatliquoring, dyeing, main fatliquoring, fixing, washing water, discharging, squeezing water, vacuum drying, hanging and airing, softening, grinding skin and tumbling; the specific process of rewetting is as follows:
S1, adding 120-180% of water with the temperature of 45-55 ℃ and 2-4% of soft water industrial salt into a rotary drum according to the weight percentage of the anti-fluff cortex, degreasing agent Eusapon OC-0.6% of alkaline enzyme BASOZYM S0.3-0.6% of alkaline enzyme BASOZYM S, rewetting agent Eusapon W-0.6% of ammonium sulfate 0.5-3.0%, sodium metabisulfite 1-3% of rotary drum for 120-150 min, adding ammonia-free deashing agent TJ-A3609E1.5-3.0% and rotary drum for 60-80 min, adding 200-300% of water for one time, and adding 100-200% of water after water drainage.
Further, the specific retanning process is as follows:
Adding 0.6-1.0% of 85% formic acid into a rotary drum, adding 1-2% of tanning agent GM into the rotary drum for 60-80 min, adding TANICOR DLE LIQ-6% of white tannin into the rotary drum for 120-150 min, and adding 40-60% of water into the rotary drum.
Further, the neutralization specifically comprises the following steps:
Adding 2-6% of sodium formate, 2-3% of neutralized tannin Coralon X NL liq, 30-60 min of a rotary drum, 1.2-1.6% of baking soda, 1-3% of ammonium acetate, 0.5-1.0% of ammonium carbonate and 150-200 min of a rotary drum, and adding 200-300% of water for washing once.
Further, the specific pre-fatting process is as follows: l
TIMBCOAT 409-F1-3% is added into the drum, the synthetic oil LIONSYN M1-3% is added into the drum, the white tannin TANICOR DLE LIQ-3% is added into the drum for 30-60 min.
Further, the specific dyeing process is as follows:
Adding 1.5-3.0% of dispersed tannin Coralon M, E4B0.03-0.05% of dye BROWN, 0.005-0.008% of dye BROWN EDR, 0.015-0.030% of dye GREY EBL, tanicor UR NEW-6% of filled tannin, TANICOR XAR NEW-4% of substituted tannin, 2.5-5.0% of titanium dioxide R902 and 60-80 min of rotating drum.
Further, the main fatting concrete process is as follows:
100 to 200 percent of water, 3 to 5 percent of TIMBCOAT-409-F, 3 to 5 percent of synthetic oil LIONSYN 403M, 3 to 5 percent of lanolin ODINOIL LAN, 3 to 0.4 percent of mildew preventive TX-310.2 and 90 minutes of rotating drum are added into the rotating drum.
Further, the specific fixing process is as follows:
Adding 20-50% of water, 1-3% of cationic fatting agent TX-01 and 25-45 min of a rotary drum, adding 0.3-0.6% of 85% formic acid, 20-30 min of the rotary drum, then adding 0.5-0.8% of 85% formic acid, 20-30 min of the rotary drum, finally adding 0.8-1.0% of 85% formic acid, 25-50 min of the rotary drum, and then adding 200-300% of water for washing once.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts a chromium-free processing technology, and the natural health characteristics can be naturally degraded without causing secondary pollution to the environment.
Meanwhile, in the rewetting process, fatty aldehyde TJ-R706, degreasing agent Eusapon OC, sodium carbonate, deliming agent Pic S, ammonium sulfate, formic acid and sodium metabisulfite are adopted for treatment, so that the rewetting effect is effectively improved, and the processing treatment of the subsequent step is facilitated.
In the subsequent primary retanning, alkali extraction, neutralization, dyeing, primary fixing, primary fatliquoring, secondary fixing and secondary fatliquoring, the mechanical properties of leather are effectively improved by processing through an independently developed formula.
Detailed Description
The raw materials used in the invention are all commercial products, wherein:
Soft water industrial salt is purchased from basf (china) limited;
degreasing agent Eusapon OC was purchased from basf (china) limited;
Alkaline enzyme BASOZYM S is available from basf (china) limited;
rewet Eusapon W was purchased from basf (china) limited;
ammonia-free deashing agent TJ-A3609E is purchased from Sichuan Ting river New Material Co., ltd;
Tanning agent GM purchased from basf (china) limited;
The leucotannin TANICOR DLE LIQ was purchased from basf (china) limited;
neutralized tannins Coralon X NL liq were purchased from basf (china) limited;
TIMBCOAT 409-F was purchased from Basiff (China) Co., ltd;
synthetic oil LIONSYN M was purchased from basf (china) limited;
Disperse tannins Coralon M were purchased from basf (china) limited;
The dye BROWN E4B was purchased from taiwan perpetual chemical industry, inc;
the dye BROWN EDR was purchased from taiwan perpetual chemical industry inc;
The dye GREY EBL was purchased from taiwan perpetual chemical industry, inc;
fill tannins Tanicor UR NEW were purchased from basf (china) limited;
The replacement tannins TANICOR X AR NEW were purchased from basf (china) limited;
titanium dioxide r902+ is purchased from kemu chemistry;
TIMBCOAT 409-F was purchased from Basiff (China) Co., ltd;
synthetic oil LIONSYN M was purchased from basf (china) limited;
lanolin ODINOIL LAN was purchased from basf (china) limited;
The mildew preventive TX-31 is purchased from Sichuan Ting river New Material Co., ltd;
Cationic fatting agent TX-01 was purchased from Sichuan Tingjiang New Material Co.
Example 1
The preparation method of the environment-friendly chromium-free anti-velvet leather comprises the following steps:
rewetting, retanning, neutralizing, pre-fatliquoring, dyeing, main fatliquoring, fixing, washing water, discharging, squeezing water, vacuum drying, hanging and airing, softening, grinding skin and tumbling;
the specific process of rewetting is as follows:
s1, adding water 120% at 45 ℃ into a rotary drum, soft water industrial salt 2%, degreasing agent Eusapon OC 0.3.3%, alkaline enzyme BASOZYM S0.3%, rewetting agent Eusapon W0.3.3%, ammonium sulfate 0.5%, sodium metabisulfite 1% into the rotary drum for 120min, adding ammonia-free deashing agent TJ-A3609E 1.5% into the rotary drum for 60min, adding 200% of water for washing once, and adding water for 100% after water drainage.
The specific retanning process comprises the following steps:
Adding 85% formic acid 0.6% into a rotary drum, rotating the drum for 60min, adding tanning agent GM 1%, rotating the drum for 60min, adding white tannin TANICOR DLE LIQ%, rotating the drum for 120min, and adding water 40%.
The neutralization specifically comprises the following steps:
Adding sodium formate 2%, neutralized tannin Coralon X NL liq%, sodium bicarbonate 1.2%, ammonium acetate 1%, ammonium carbonate 0.5% into a rotary drum for 30min, and adding water 200% into the rotary drum for one time.
The specific process of pre-fatting is as follows: TIMBCOAT 409-F1% of synthetic oil LIONSYN, 403M1% of white tannin TANICOR DLE LIQ% is added into the rotary drum, and the rotary drum is used for 30min.
The specific dyeing process is as follows:
Adding dispersed tannin Coralon M1.5.5%, dye BROWN E4B 0.03%, dye BROWN EDR 0.005%, dye GREY EBL 0.015%, filled tannin Tanicor UR NEW 3%, substituted tannin TANICOR X AR NEW 1%, titanium dioxide R902+2.5% into the drum, and rotating for 60min.
The main fatting concrete process is as follows:
100% of water, TIMBCOAT-F3%, LIONSYN-403M 3% of synthetic oil, ODINOIL LAN% of lanolin, 0.2% of mildew inhibitor TX-31 and 90min of rotating drum are added into the rotating drum.
The fixing method specifically comprises the following steps:
20% of water, 0.3% of 85% of formic acid and 20% of cationic fatliquor TX-01% are added into a rotary drum for 25min, then 0.5% of 85% of formic acid and 20min are added into the rotary drum, 0.8% of 85% of formic acid and 25min are added into the rotary drum for the last time, and water is added into the rotary drum for 200% of water for washing once. And then washing water, discharging, squeezing water, vacuum drying, hanging, softening, grinding and tumbling to obtain the environment-friendly chromium-free anti-velvet leather.
Example 2
The preparation method of the environment-friendly chromium-free anti-velvet leather comprises the following steps:
rewetting, retanning, neutralizing, pre-fatliquoring, dyeing, main fatliquoring, fixing, washing water, discharging, squeezing water, vacuum drying, hanging and airing, softening, grinding skin and tumbling;
the specific process of rewetting is as follows:
S1, adding 180% of water at 55 ℃, 4% of soft water industrial salt, 0.6% of degreasing agent Eusapon OC, 0.6% of alkaline enzyme BASOZYM S, eusapon W0.6.6% of rewetting agent, 3.0% of ammonium sulfate, 3% of sodium metabisulfite and 150 minutes of rotary drum into the rotary drum according to the weight percentage of the anti-fluff cortex, adding 3.0% of ammonia-free deashing agent TJ-A3609E into the rotary drum for 80 minutes, adding 300% of water for washing once, and adding 200% of water after water drainage.
The specific retanning process comprises the following steps:
Adding 85% formic acid 1.0% into a rotary drum, rotating the drum for 80min, adding tanning agent GM 2%, rotating the drum for 80min, adding white tannin TANICOR DLE LIQ%, rotating the drum for 150min, and adding water for 60%.
The neutralization specifically comprises the following steps:
Adding 6% of sodium formate, coralon X NL liq% of neutralized tannin into a rotary drum, rotating the drum for 60min, adding 1.6% of baking soda, 3% of ammonium acetate, 1.0% of ammonium carbonate into the rotary drum, rotating the drum for 200min, and adding 300% of water for washing once.
The specific process of pre-fatting is as follows:
TIMBCOAT 409-F3% of synthetic oil LIONSYN, 403M.3% of white tannin TANICOR DLE LIQ% is added into the rotary drum, and the rotary drum is operated for 60min.
The specific dyeing process is as follows:
Adding dispersed tannin Coralon M3.0.0%, dye BROWN E4B 0.05%, dye BROWN EDR 00.008%, dye GREY EBL 0.030%, filled tannin Tanicor UR NEW%, substituted tannin TANICOR X AR NEW 4%, titanium dioxide R902+5.0% into the drum, and rotating for 80min.
The main fatting concrete process is as follows:
200% of water, TIMBCOAT-F5% of TIMBCOAT% of synthetic oil LIONSYN, 403M 5% of lanolin ODINOIL LAN% and 0.4% of mildew inhibitor TX-31 are added into the rotary drum, and the rotary drum is rotated for 90min.
The fixing method specifically comprises the following steps:
50% of water, 0.6% of 85% of formic acid and 30min of a cationic fatliquor TX-01% are added into a rotary drum for 45min, 0.8% of 85% of formic acid and 30min of the rotary drum are added, 1.0% of 85% of formic acid and 50min of the rotary drum are added for the last time, and water 300% of water is added for washing once. And then washing water, discharging, squeezing water, vacuum drying, hanging, softening, grinding and tumbling to obtain the environment-friendly chromium-free anti-velvet leather.
Example 3
The preparation method of the environment-friendly chromium-free anti-velvet leather comprises the following steps:
rewetting, retanning, neutralizing, pre-fatliquoring, dyeing, main fatliquoring, fixing, washing water, discharging, squeezing water, vacuum drying, hanging and airing, softening, grinding skin and tumbling;
the specific process of rewetting is as follows:
S1, adding 160% of water at 450 ℃, 3% of soft water industrial salt, 0.5% of degreasing agent Eusapon OC, 0.5% of alkaline enzyme BASOZYM S, eusapon W0.5.5% of rewetting agent, 2.0% of ammonium sulfate, 2% of sodium metabisulfite and 140 minutes of rotary drum into the rotary drum according to the weight percentage of the anti-fluff cortex, adding 2.5% of ammonia-free deashing agent TJ-A3609E into the rotary drum for 70 minutes, adding 250% of washing water into the rotary drum for one time, and adding 150% of water into the rotary drum after water drainage.
The specific retanning process comprises the following steps:
adding 85% formic acid 0.8% into a rotary drum, rotating the drum for 70min, adding tanning agent GM 2%, rotating the drum for 70min, adding white tannin TANICOR DLE LIQ%, rotating the drum for 140min, and adding water 50%.
The neutralization specifically comprises the following steps:
Adding sodium formate 4%, neutralized tannin Coralon X NL liq%, sodium bicarbonate 1.4%, ammonium acetate 2%, ammonium carbonate 0.8%, and washing water 250% into drum for one time for 180 min.
The specific process of pre-fatting is as follows:
TIMBCOAT 409-F2% of synthetic oil LIONSYN, 403M 2% of white tannin TANICOR DLE LIQ% and rotating drum for 40min.
The specific dyeing process is as follows:
Adding dispersed tannin Coralon M12.5.5%, dye BROWN E4B0.04%, dye BROWN EDR 0.007%, dye GREY EBL 0.020%, filling tannin Tanicor UR NEW%, substituted tannin TANICOR X AR NEW%, titanium dioxide R902+4.0% into the drum, and rotating for 70min.
The main fatting concrete process is as follows:
150% of water, TIMBCOAT-F4% of synthetic oil LIONSYN, 403M 4% of lanolin ODINOIL LAN%, 0.3% of mildew inhibitor TX-31 and 90min of rotating drum are added into the rotating drum.
The fixing method specifically comprises the following steps:
40% of water, 0.4% of 85% of formic acid and 20% of cationic fatliquor TX-01% are added into a rotary drum for 30min, then 0.7% of 85% of formic acid and 20min are added into the rotary drum, 0.9% of 85% of formic acid and 50min are added into the rotary drum for the last time, and water is added into the rotary drum for 250% of water for washing once. And then washing water, discharging, squeezing water, vacuum drying, hanging, softening, grinding and tumbling to obtain the environment-friendly chromium-free anti-velvet leather.
The leather products prepared in examples 1 to 3 were tested and the results were as follows:
The environment-friendly chromium-free anti-velvet leather prepared by the preparation method disclosed by the invention has excellent color fastness besides the chromium-free performance, and has very strong extensibility, tearing performance and tensile strength.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (7)
1. The manufacturing method of the environment-friendly chromium-free anti-velvet leather is characterized by comprising the following steps of:
Rewetting, retanning, neutralizing, pre-fatliquoring, dyeing, main fatliquoring, fixing, washing water, discharging, squeezing water, vacuum drying, hanging and airing, softening, grinding skin and tumbling; the specific process of rewetting is as follows:
S1, adding 120-180% of water with the temperature of 45-55 ℃ and 2-4% of soft water industrial salt into a rotary drum according to the weight percentage of the anti-fluff cortex, degreasing agent Eusapon OC-0.6%, alkaline enzyme BASOZYM S-0.3-0.6%, rewetting agent Eusapon W-0.3-0.6%, ammonium sulfate 0.5-3.0%, sodium metabisulfite 1-3% and rotary drum 120-150 min, adding ammonia-free deashing agent TJ-A3609E 1.5-3.0% and rotary drum 60-80 min, adding 200-300% of washing water once, and adding 100-200% of water after water drainage.
2. The method for manufacturing the environment-friendly chromium-free anti-nap skin according to claim 1, wherein the specific retanning process comprises the following steps:
Adding 0.6-1.0% of 85% formic acid into a rotary drum, adding 1-2% of tanning agent GM into the rotary drum for 60-80 min, adding TANICOR DLE LIQ-6% of white tannin into the rotary drum for 60-80 min, adding 40-60% of water into the rotary drum for 120-150 min.
3. The method for manufacturing the environment-friendly chromium-free anti-nap skin according to claim 1, wherein the specific neutralization process is as follows:
adding 2-6% of sodium formate, 2-3% of neutralized tannin Coralon X NL liq% into a rotary drum, rotating the drum for 30-60 min, adding 1.2-1.6% of baking soda, 1-3% of ammonium acetate, 0.5-1.0% of ammonium carbonate, rotating the drum for 150-200 min, and adding 200-300% of water for washing once.
4. The method for manufacturing the environment-friendly chromium-free anti-nap skin according to claim 1, wherein the specific pre-fatting process is as follows: l
TIMBCOAT 409-F1-3% is added into the rotary drum, the synthetic oil LIONSYN, 403M 1-3%, the white tannin TANICOR DLE LIQ, 1-3% and the rotary drum for 30-60 min.
5. The method for manufacturing the environment-friendly chromium-free anti-nap skin according to claim 1, wherein the specific dyeing process is as follows:
Adding dispersed tannin Coralon M1.5.5-3.0%, dye BROWN E4B 0.03-0.05%, dye BROWN EDR 0.005-0.008%, dye GREY EBL 0.015-0.030%, filled tannin Tanicor UR NEW-6%, substituted tannin TANICOR X AR NEW-4%, titanium dioxide R902+2.5-5.0% and rotary drum for 60-80 min into the rotary drum.
6. The method for manufacturing the environment-friendly chromium-free anti-nap skin according to claim 1, wherein the main fatting concrete process is as follows:
100-200% of water, 3-5% of TIMBCOAT-409-F, 3-5% of synthetic oil LIONSYN, 3-5% of lanolin ODINOIL LAN, 0.2-0.4% of mildew inhibitor TX-31 and 90min of the rotary drum are added into the rotary drum.
7. The method for manufacturing the environment-friendly chromium-free anti-nap skin according to claim 1, wherein the specific fixing process is as follows:
adding 20-50% of water, 1-3% of cationic fatting agent TX-01 and 25-45 min of a rotary drum, adding 0.3-0.6% of 85% formic acid, 20-30 min of the rotary drum, then adding 0.5-0.8% of 85% formic acid, 20-30 min of the rotary drum, finally adding 0.8-1.0% of 85% formic acid, 25-50 min of the rotary drum, and then adding 200-300% of water for washing water once.
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