CN102517408A - Sheepskin tanning process capable of replacing enzyme softening with excessive deliming - Google Patents
Sheepskin tanning process capable of replacing enzyme softening with excessive deliming Download PDFInfo
- Publication number
- CN102517408A CN102517408A CN2011103637380A CN201110363738A CN102517408A CN 102517408 A CN102517408 A CN 102517408A CN 2011103637380 A CN2011103637380 A CN 2011103637380A CN 201110363738 A CN201110363738 A CN 201110363738A CN 102517408 A CN102517408 A CN 102517408A
- Authority
- CN
- China
- Prior art keywords
- deliming
- liming
- deburring
- body lotion
- pelt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 102000004190 Enzymes Human genes 0.000 title claims abstract description 19
- 108090000790 Enzymes Proteins 0.000 title claims abstract description 19
- 239000006210 lotion Substances 0.000 claims description 29
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 235000019270 ammonium chloride Nutrition 0.000 claims description 10
- 238000007654 immersion Methods 0.000 claims description 8
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 7
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 235000019687 Lamb Nutrition 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 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 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000010985 leather Substances 0.000 abstract description 14
- 238000002360 preparation method Methods 0.000 abstract description 2
- 102000004169 proteins and genes Human genes 0.000 abstract description 2
- 108090000623 proteins and genes Proteins 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000009966 trimming Methods 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 238000007596 consolidation process Methods 0.000 description 6
- 241001494479 Pecora Species 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 241000283707 Capra Species 0.000 description 3
- 102000035195 Peptidases Human genes 0.000 description 3
- 108091005804 Peptidases Proteins 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000002425 soil liming agent Substances 0.000 description 1
Landscapes
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention relates to a sheepskin tanning process capable of replacing enzyme softening with excessive deliming, which comprises the following steps of: after liming, pelting, trimming and weighing, firstly pre-deliming, then mainly deliming and finally excessively deliming to finish the process of deliming and softening naked skins. The process has the beneficial effects that in the whole tinning process, an enzyme preparation is not used for softening skin proteins; and the hand feeling, fullness, grain tightness, loose grain and rotten grain indicators of finished leather prepared by the sheepskin tanning process are superior to those of finished leather prepared by a conventional process.
Description
Technical field
The present invention relates to a kind of leather-making technology, the excessive deliming of particularly a kind of usefulness replaces the process hides novel process of enzyme bating.
Background technology
Enzyme bating is very important operation in traditional process hides complete processing.Its technique means is with proteolytic enzyme the pelt of deliming or dealkalize to be handled, and to clear up the part skin protein, makes finished leather soft.If adopt enzyme unhairing technology, then generally needn't implement independent enzyme bating again.But be coated with under the prerequisite of ash alkali unhairing, present leather-making technology be unable to do without enzyme bating technology.Because proteolytic enzyme character is unstable, can cause finished leather loose side even mashed face to occur, reduce the quality and the grade of finished product leather.
Summary of the invention
The present invention aims to provide a kind of sheepskin leather-making technology with excessive deliming replacement enzyme bating, mainly solves the problem of finished leather loose side, mashed face.
Technical scheme of the present invention is following:
The sheepskin leather-making technology that replaces enzyme bating with excessive deliming
,It is characterized in that:
As the sheepskin of process hides raw material through immersion, be coated with ash alkali unhairing and liming after, with the pelt deburring, weigh, carry out in rotary drum according to following steps then:
The first step, preparatory deliming: body lotion liquor ratio 100%～200%; 18～25 ℃ of bath temperature; Apply the ammonium chloride or the ammonium sulfate of pelt weight 0.6%～0.8% after the liming deburring, add at twice in the body lotion, wherein primary add-on accounts for 40%～70%; Respectively rotate 20～30min after each the adding, water is changed in discharge opeing then;
Second step, main deliming: body lotion liquor ratio 150%～250%; 18～25 ℃ of bath temperature; The ammonium chloride or the ammonium sulfate of pelt weight 1.5%～2.0% after the adding liming deburring, the sour A of pelt weight 0.5%～0.8% after the liming deburring, the sour B of pelt weight 0.2%～0.4% after the liming deburring; Rotate 80～100min, got into for the 3rd step;
The 3rd step: excessive deliming: the ammonium chloride or the ammonium sulfate of pelt weight 0.5%～0.8% after in the second step body lotion, adding the liming deburring; The penetrating agent JFC of pelt weight 0.6%～0.8% after the liming deburring; Rotate 50～90min, change the direct pickling chrome tanning process that gets in water and washing back;
Wherein sour A is a kind of in lactic acid, the Hydrocerol A or both arbitrary proportion mixtures; Acid B is a kind of in boric acid, the formic acid or both arbitrary proportion mixtures;
Described body lotion liquor ratio is meant the weight ratio of pelt and water in the rotary drum.
Positively effect of the present invention is: in rotary drum, add ammonium chloride or ammonium sulfate in the deliming later stage, carry out with bathing with main deliming operation, removed traditional enzyme bating operation from.Compare with traditional leather-making technology, the present invention has broken through traditional concept, has saved traditional enzyme bating operation, has shortened the leather-making technology flow process, and has mainly solved because of softening loose side that causes of proteolytic enzyme and mashed face problem.Compare with the made leather of traditional technology, the grain degree of packing of the made leather of the present invention, fullness all is superior to traditional technology, does not have the loose side situation basically, not mashed face.
Embodiment
Further specify the present invention below in conjunction with instance.
Select 100 goatskins, respectively each is cut open along the ridge line, randomly draw 100 half sheets and be used for embodiment one, 100 half sheets are used for embodiment two in addition.Because lamb skin is approximate at rawhide weave construction and process hides aspect of performance and goatskin, those skilled in the art can infer the also suitable excessive deliming replacement enzyme bating leather-making technology of the present invention of lamb skin.
Embodiment one
(1), preimpregnation water applies 0.25% sterilant, 0.25% immersion auxiliary agent, 0.2%～0.5% soda ash, the body lotion liquor ratio is controlled at 500%～1000%; Bath temperature 18-25 ℃, body lotion pH is 7.8-8.2, and the body lotion degree Beaume is 5, and rawhide is carried out preimpregnation water; The loose position of rawhide water-filling 50%～60%, consolidation position water-filling 20%～30% is main with immersion in body lotion; Every 60min changes 5min, moves 12-18h altogether, and carry out fleshing, deburring successively, weigh next day.
(2), main immersion applies 0.3% sterilant, 0.3% immersion auxiliary agent, the soda ash of 0.3-0.5%, the body lotion liquor ratio is controlled at 500-1000%; Body lotion pH is 9.8-10.2, and the body lotion degree Beaume is 3-4, and above-mentioned rawhide is led immersion, loose position water-filling 70%～80%; Consolidation position water-filling 50%～60%, bath temperature 18-25 ℃ is main with immersion in body lotion; Rotation is auxilliary, and every 60min changes 5min, amounts to 18-21h.
(3), being coated with ash alkali unhairing operates according to common process.
(4), liming applies auxiliary liming agent 0.5%, Sodium sulfhydrate 0.6%, sodium sulphite 1.2% (adding in three batches), lime 2%, body lotion liquor ratio 50%-100%; Bath temperature 18-25 ℃, body lotion pH is 11, carries out liming, rotation time 180min; Stop drum and spend the night, fleshing, deburring is weighed.
(5), preparatory deliming body lotion liquor ratio 150%, 20 ℃ of bath temperature apply the ammonium chloride of pelt weight 0.7% after the liming deburring; Add in the body lotion at twice; Wherein primary add-on accounts for 50%, respectively rotates 20min, discharge opeing then after each the adding; Washing is washed till the constant water that changed at 10.5 ± 0.3 o'clock of body lotion pH and carried out for (6) step.
(6), main deliming body lotion liquor ratio 200%, 20 ℃ of bath temperature add the ammonium chloride of pelt weight 2.0% after the liming deburring, the lactic acid of pelt weight 0.7% after the liming deburring, the boric acid of pelt weight 0.3% after the liming deburring rotates 90min, gets into for (7) step.
(7), excessively the ammonium chloride of pelt weight 0.6% after deliming adds the liming deburring in (6) step body lotion, the penetrating agent JFC of pelt weight 0.7% after the liming deburring rotates 60min, changes water and the washing back directly got into for (8) step.
(8), pickling chrome tanning body lotion liquor ratio is 100%, 22 ℃ of bath temperature, salt is 9%, rotates 20min, transfers degree Beaume 8-10, adds 1% sodium formiate, 4.3% sulfuric acid changes 90min, sheep acid skin, outwell 2/3rds body lotions and carry out conventional chrome tanning.
(9), process the finished product leather according to goat luggage leather common process behind the chrome tanning.
Embodiment two
(1), (2), (3), (4), (8), (9) step identical with embodiment one, (5), (6), (7) replace with conventional deliming, enzyme bating technology generations.
Described body lotion liquor ratio is meant the weight ratio of pelt and water in the rotary drum.Described per-cent is weight percentage.Reinforced per-cent is radix with pelt weight all.
Sheep acid skin and goat luggage leather to embodiment one, two preparations carry out qualitative evaluation (this area does not still have the quantitative evaluation standard for fullness ratio, feel, pliability, the grain state of leather at present) respectively, and evaluation result is seen table 1, table 2.
The organoleptic properties contrast of table 1 sheep acid skin
| Performance index | Fullness | Feel | Flexibility | The grain compactibility | Mashed face |
| Embodiment two | Better | Difference | Better | Than consolidation | Obviously exist |
| Embodiment one | Good | Good | Better | Consolidation | Do not have |
Can find out from table 1, under the suitable basically situation of pliability, all be superior to the conventional leather-making technology of enzyme bating with fullness, feel, grain compactibility, the mashed face index of technology gained sheep acid skin of the present invention.
The organoleptic properties contrast of table 2 sheepskin luggage leather
| Performance index | Fullness | Feel | Flexibility | The grain compactibility | Loose side |
| Embodiment two | Better | Difference | Better | Than consolidation | Obviously exist |
| Embodiment one | Good | Good | Better | Consolidation | Basically there is not loose side |
Can find from table 2, under the suitable basically situation of pliability, all be superior to common process with feel, fullness, grain compactibility, loose side, the index of technology gained goat luggage leather of the present invention.
Claims (3)
1. the sheepskin leather-making technology that replaces enzyme bating with excessive deliming
,It is characterized in that:
As the sheepskin of process hides raw material through immersion, be coated with ash alkali unhairing and liming after, with the pelt deburring, weigh, carry out in rotary drum according to following steps then:
The first step, preparatory deliming: body lotion liquor ratio 100%～200%; 18～25 ℃ of bath temperature; Apply the ammonium chloride or the ammonium sulfate of pelt weight 0.6%～0.8% after the liming deburring, add at twice in the body lotion, wherein primary add-on accounts for 40%～70%; Respectively rotate 20～30min after each the adding, water is changed in discharge opeing then;
Second step, main deliming: body lotion liquor ratio 150%～250%; 18～25 ℃ of bath temperature; The ammonium chloride or the ammonium sulfate of pelt weight 1.5%～2.0% after the adding liming deburring, the sour A of pelt weight 0.5%～0.8% after the liming deburring, the sour B of pelt weight 0.2%～0.4% after the liming deburring; Rotate 80～100min, got into for the 3rd step;
The 3rd step: excessive deliming: the ammonium chloride or the ammonium sulfate of pelt weight 0.5%～0.8% after in the second step body lotion, adding the liming deburring; The penetrating agent JFC of pelt weight 0.6%～0.8% after the liming deburring; Rotate 50～90min, change the direct pickling chrome tanning process that gets in water and washing back;
Wherein sour A is a kind of in lactic acid, the Hydrocerol A or both arbitrary proportion mixtures; Acid B is a kind of in boric acid, the formic acid or both arbitrary proportion mixtures;
Described body lotion liquor ratio is meant the weight ratio of pelt and water in the rotary drum.
2. according to claim 1ly replace the sheepskin leather-making technology of enzyme bating with excessive deliming, it is characterized in that: implement washing after deliming and the discharge opeing in advance, body lotion pH is constant to carry out main deliming again at 10.5 ± 0.3 o'clock.
3. the sheepskin leather-making technology with excessive deliming replacement enzyme bating according to claim 1 and 2 is characterized in that described sheepskin is goatskin or lamb skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110363738 CN102517408B (en) | 2011-11-17 | 2011-11-17 | Sheepskin tanning process capable of replacing enzyme softening with excessive deliming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110363738 CN102517408B (en) | 2011-11-17 | 2011-11-17 | Sheepskin tanning process capable of replacing enzyme softening with excessive deliming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102517408A true CN102517408A (en) | 2012-06-27 |
| CN102517408B CN102517408B (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110363738 Expired - Fee Related CN102517408B (en) | 2011-11-17 | 2011-11-17 | Sheepskin tanning process capable of replacing enzyme softening with excessive deliming |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1546492A1 (en) * | 1988-05-30 | 1990-02-28 | Центральный научно-исследовательский институт кожевенно-обувной промышленности | Method of treating raw hides |
| CN1240230A (en) * | 1998-06-22 | 2000-01-05 | 焦兴楚 | Protective treating method for pig skin and the part between the ribs and the hips |
| US20050120489A1 (en) * | 2002-07-29 | 2005-06-09 | Wolmeister Walter L. | Formulation and process for making formulation for preservation of animal and vegetable tissues |
| CN101509045A (en) * | 2008-12-11 | 2009-08-19 | 湖南省怀其皮革集团制革有限公司 | Sodium sulfide-free, lime-free depilation caustic dip method for lining leather of high-grade pig leather shoes |
| CN101760569A (en) * | 2008-12-25 | 2010-06-30 | 峰安皮业股份有限公司 | Leather making bio-pretreatment method |
| CN102010917A (en) * | 2010-11-22 | 2011-04-13 | 陕西科技大学 | Ammonia nitrogen-free leather-making deliming agent and preparation method thereof |
-
2011
- 2011-11-17 CN CN 201110363738 patent/CN102517408B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1546492A1 (en) * | 1988-05-30 | 1990-02-28 | Центральный научно-исследовательский институт кожевенно-обувной промышленности | Method of treating raw hides |
| CN1240230A (en) * | 1998-06-22 | 2000-01-05 | 焦兴楚 | Protective treating method for pig skin and the part between the ribs and the hips |
| US20050120489A1 (en) * | 2002-07-29 | 2005-06-09 | Wolmeister Walter L. | Formulation and process for making formulation for preservation of animal and vegetable tissues |
| CN101509045A (en) * | 2008-12-11 | 2009-08-19 | 湖南省怀其皮革集团制革有限公司 | Sodium sulfide-free, lime-free depilation caustic dip method for lining leather of high-grade pig leather shoes |
| CN101760569A (en) * | 2008-12-25 | 2010-06-30 | 峰安皮业股份有限公司 | Leather making bio-pretreatment method |
| CN102010917A (en) * | 2010-11-22 | 2011-04-13 | 陕西科技大学 | Ammonia nitrogen-free leather-making deliming agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 但卫华: "猪正面服装革松面的预防与消除", 《四川皮革》 * |
| 冷杰: "脱灰裸皮臀背部包碱工艺综合平衡的研究", 《中国皮革》 * |
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| CN102517408B (en) | 2013-06-19 |
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Inventor after: Shen Tianhuan Inventor before: Duan Baorong Inventor before: Wang Quanjie |
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Effective date of registration: 20151228 Address after: 523000 Guangdong Province, Dongguan city Liaobu town Hengkeng village and garden B block 2 floor area 5 A Patentee after: Dongguan Ke Baodi Leather Co. Ltd. Address before: 264005 Shandong Province, Yantai city Laishan District Road No. 32 spring Patentee before: Yantai University |
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Address after: Three and the industrial zone of Liaobu Zhen Heng Keng Cun 523000 Guangdong city of Dongguan province and park B block 2 floor area six Patentee after: Guangdong Ke Baodi Group Co. Ltd. Address before: 523000 Guangdong Province, Dongguan city Liaobu town Hengkeng village and garden B block 2 floor area 5 A Patentee before: Dongguan Ke Baodi Leather Co. Ltd. |
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Address after: 523000 six, Section 2, 2 B, Heng Keng Village three and Industrial Park Heping garden, Liaobu Town, Dongguan, Guangdong. Patentee after: Guangdong kolpadi industrial Limited by Share Ltd Address before: 523000 six, Section 2, 2 B, Heng Keng Village three and Industrial Park Heping garden, Liaobu Town, Dongguan, Guangdong. Patentee before: Guangdong Ke Baodi Group Co. Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20130619 Termination date: 20191117 |