CN1046551C - Tanning of plateau naked carp skin and the fish skin product - Google Patents
Tanning of plateau naked carp skin and the fish skin product Download PDFInfo
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Abstract
The present invention relates to a method for the preparation of fish skins and fish skin products. The method comprises that: the pretreatment of fresh fish skins; the fresh fish skins are redipped into water solution of common salt and sodium bisulfite; alkali is dipped into sodium carbonate solution; degreasing is carried out in the water solution containing washing powder, the sodium carbonate and formalin; the softening and the pickling of the fresh fish skins are carried out in the water solution containing the common salt, sodium sulfate, sulphuric acid and 3350 acid protease; the tanning is carried out in the water solution containing chromium potassium alum, alum, the common salt, the sodium sulfate, the sulphuric acid, talcum powder, the sodium carbonate and sodium bicarbonate, and then, the procedures, such as flushing, neutralization, dyeing, washing, stuffing, leather fluffing, softening, dust removal, finish coating, suspension, etc., are carried out. The fish skins can be made into furriery, leather shoes, leather bags, etc. The performance is superior to that of cow and sheep skins. The present invention conforms to the national standard of garment leather and instep leather.
Description
The present invention relates to a kind of purposes of process for tanning and made fish-skin thereof of fish-skin.
Tibet is located in the plateau, and the fishery aboundresources has advantageous supremacy clause, and the lake group in Tibet is the plateau lake district that height above sea level is the highest in the world, scope is maximum, quantity is maximum.According to the preliminary statistics, area surpasses 1KM in big or small 2000 lakes
2just have 1003.Through results of measuring, it is 16149.94KM that there is the water area of fish in lake, Tibet and river
2, the storage fish amount in lake is 136869.705T, the storage fish amount of rivers is 4060.95T.But so a large amount of fishery resources fails to obtain development and use.By retrieval, retrieve the background document of application number CN86107461 " method for preparing fish-skin " by name, document disclosed method is to be used for Brazil's thorn perch skin that tanning belongs to Seranidae family, fish-skin is carried out the degreasing of part in the aqueous solution that contains alkylene oxide C8-C12 alkanol, handle fish-skin by being stirred in the second kind of body lotion that contains dissolved ceratinase or alkali metalsulphide, degreasing then, with the condensation product of formaldehyde and phenol or naphthalene in the temperature that is lower than 20 ℃, pH value is to give the fish-skin of tanning under the condition of 5-8, in being the pickling body lotion of 1.5-4, pH value carries out the fish-skin pickling, with chromic salts or synthetic tanning agent liquid tanning fish-skin.The made finished product of this method leather has the intensity that is similar to the Reptilia leather, and aspect flexible, pliable and tough as the high-quality leather.But little because of its scope of application face, raw material sources are difficult, cost is high, to implementing to bring certain difficulty.
The objective of the invention is to realize the purposes of the process for tanning and the made fish-skin thereof of plateau naked carp skin, this method technology is simple, cost is low, raw material is easy to get, easy to implement, made fish-skin at light degree of selecting, be difficult for aspects such as aging, cold-resistant, water-fast bubble, scrubbing resistance, not delamination, good permeability, resistance to tension and all be better than the cattle and sheep skin.
The present invention realizes by following manner:
The process for tanning of this plateau naked carp skin includes following process:
(1) the fresh fish skin give treating processes, with the remaining meat on the immersion of fresh fish skin, cleaning, peeling, the removal skin.
(2) soak process again, the fish-skin of above-mentioned processing is immersed in the aqueous solution of salt and sodium bisulfite, and stir.
(3) caustic dip process immerses above-mentioned multiple impregnated fish-skin in the aqueous solution of soda ash, and stirs, and skin has slightly to take out after the enlargement and washes down.
(4) softening pickling process immerses the fish-skin of above-mentioned processing and contains in the aqueous solution of salt, saltcake, sulfuric acid, 3350 aspartic proteases, and the pH value in the solution is 2.5-3.5, and stir, after treating the dermatotome absent-mindedness, go out skin control liquid, water flushing back dries again.
(5) skimming processes, this process have adopted machinery method (rolling process) and physics (absorption method), clean, water dumping, go out skin with clear water afterwards, hand over step operation down.
(6) tannery, the fish-skin immersion of above-mentioned processing is contained in the aqueous solution of chromium alum, alum, salt, saltcake, sulfuric acid, talcum powder, soda ash, sodium bicarbonate, under the situation of different pH values, divide two periods to stir, in being the 2.8-3.4 scope, stirs pH value, transferring the pH value of solution with sodium bicarbonate again is 3.4-4.0, stir again, go out skin afterwards, leave standstill.
(7) flushing, N-process immerse the fish-skin of above-mentioned processing and contain in the aqueous solution of sodium bicarbonate, wash neutralization, and the pH value of solution is 5 ± 1.
(8) dyeing course dyes preceding preparation with the fish-skin of above-mentioned processing, promptly through retanning, degreasing, mordant dyeing, the step of fading, contaminates again.
(9) washing stuffing process after washing, is soaked the fish-skin of above-mentioned dip-dye, and is stirred in the emulsion that contains sulfited fish oil emulsion and salt, go out out skin, water dumping, stretching, extension, drying.
(10) buffing process is carried out buffing with above-mentioned dried fish-skin on buffing machine.
(11) process that eases back eases back the fish-skin behind the above-mentioned buffing in rotary drum with the sawdust that contains moisture content, contain permeate agent in the moisture content in the sawdust.
(12) after fish-skin is made in dedusting, covering with paint, the cool process of extension.
Below each being manufactured process is elaborated.
(1) the giving in the treating processes of described fresh fish skin, be divided into four steps again:
(a) selection sort step is divided into several classes according to the quality of fresh fish skin.
(b) immersion step, its main purpose are to the sterilization of fresh fish skin, decontamination.Used equipment is the pond.Used water is the water that contains salt, and the weight ratio of used clear water and used fresh fish skin is 8-12: 1, and the salt content in the water is 45-55g/l, the temperature of immersion is that the time of normal temperature, immersion is 8-16 hour.
(c) clean peeling step, can by hand or with machinery the meat on the fresh fish skin be peelled off, and the fish-skin that peels is cleaned up.
(d) fleshing step is removed remaining meat on the peeling fish skin by hand or with fleshing machine with the fish-skin that peels.
(2) soak again in the process described, its objective is scrubbing, anticorrosion, make the protein dissolving in the rawhide, for tanning lays the first stone.Used equipment is paddle-tumble, rotary drum or pond.Describedly soak in the process again, the weight ratio of water in the used solution and used wet fish-skin is 10-15: 1, wherein the content of salt is that the content of 17-23g/l, sodium bisulfite is 1.5-2g/l in the solution, and the temperature of soaking again is 30-35 ℃, and the time of soaking again is 16-20 hour.
(3) in described caustic dip process, this process is called the swollen process of alkali again.Its objective is the degreasant the first step.Used equipment is paddle-tumble, rotary drum or pond.In the described caustic dip process, the water in the used solution and the weight ratio of used wet fish-skin are 10-15: 1, and wherein the content of soda ash is 0.5-1g/l in the solution, and the temperature of caustic dip is a normal temperature, and the time of caustic dip is 4-8 hour.
(4) in described softening pickling process, its objective is collegen filament are further disperseed, can make the leather softness of making, good-extensibility.Used equipment is paddle-tumble, in the described softening pickling process, the water in the used solution and the weight ratio of used wet fish-skin are 9-12: 1, wherein the content of salt is 27-33g/l in the solution, and the content of saltcake is 57-63g/l, and vitriolic content is 2.7-3.3g/l, the content of 3350 aspartic proteases is 5-15 unit/ml, pH value in the solution is 2.5-3.5, and softening pickled temperature is 30-35 ℃, and the softening pickled time is 8-12 hour.
(5) in described skimming processes, purpose is the fat that further removes in the dermatotome, for tanning creates conditions.Because the adipocyte wall is destroyed in pickling (more than 35 ℃) process, be in grease under the melting state at 30kg/cm
2Pressure under be extruded out.And then wash water dumping after the CaO (unslaked lime) that dermatotome is coated pasty state made its seasoning.Cause is located in the plateau, dry air is long sunshine, adopts this method can save the consumption of grease-removing agent, reduces cost, and reduces environmental pollution.
(6) in described tannery, used equipment is paddle-tumble, rotary drum.In tannery, the water in the used solution and the weight ratio of used wet fish-skin are 7-10: 1, wherein the content of chromium alum is 4-7g/l in the solution, the content of alum is 12-17g/l, the content of salt is 37-43g/l, the content of saltcake is that 37-43g/l, vitriolic content are 1.7-2.3g/l, talcous content is 17-23g/l, the content of soda ash is 0.4-0.6g/l, the content of sodium bicarbonate is 1.8-2.2g/l, the temperature of tanning is 37-43 ℃, and the time of tanning is 48-50 hour, and the interpolation content of the sodium bicarbonate of used accent pH value is 0.5-1g/l.
(7) in described flushing, N-process, used equipment is paddle-tumble, rotary drum.In described flushing, the N-process, the water in the used solution and the weight ratio of used wet fish-skin are 8-12: 1, and wherein the content of sodium bicarbonate is 0.2-0.5g/l in the solution, the pH value of solution is 5 ± 1, flushing, neutral temperature are 30-35 ℃, and flushing, neutral time are 20-40 minute.
(8) in described dyeing course, adopt known method to dye.
(9) in described washing stuffing process, its objective is the neutral salt, free acid, unconjugated tanning agent and other foreign material that remain in after the flush away tanning in the dermatotome.Stuffing is that the dermatotome fiber is lubricated, and improves tensile strength, plasticity-, extensibility, pliability, water tolerance, wearing well property and the anti-storage of cutification.Used equipment is paddle-tumble, pond.In the described washing stuffing process, the weight ratio of used emulsion and used wet fish-skin is 8-12: 1, and wherein the content of sulfited fish oil emulsion is 40-60g/l in the emulsion, the content of salt is 30-50g/l, the pH value of emulsion is 7.8-8.2, and the temperature of washing stuffing is 38-43 ℃.Drying step is to adopt known method to carry out drying.
(10) in described buffing process, main effect is on the buffing machine fine hair between fish-skin face squama and scale to be ground off, and makes its surface smooth, and does not hinder moire.Used equipment is buffing machine.
(11) in the described process that eases back, the equipment of employing is rotary drum.In the described process that eases back, the water content of used sawdust is 20-30%, and the content of the permeate agent in the moisture content is 0.2-0.5g/1, and the time that eases back is 1-2 hour.Permeate agent is 5881D (RO-(CH
2CH
2O)
11H).Dress skin amount is that rotary drum volumetrical 3/4 is advisable.The revolution of rotary drum is 12-16 rev/min.
(12) in described dedusting, covering with paint, the cool process of extension, all adopt the preparation treatment process of common leather to advance.Wherein, in decoration step, its objective is that the leather that makes after the dyeing is more bright-coloured, brighter.The bottom pigment paste of fish-skin leather, middle level, top layer all mix and stir required pigment paste with the CAF finishing agent.Used CAF finishing agent main component is the multipolymer of acrylate chloroprene, and its outward appearance: oyster white is translucent; Solid content (%): 40; Viscosity (centipoise): 20-25; PH value: 4-5.Its good emulsion stability, the surface tension of emulsion are generally in the 40-50 dynes per centimeter, and film forming properties is good, and the film physical strength is higher, and thermotolerance, winter hardiness are given prominence to, and tinting strength is very strong, production unit: Luzhou leather chemical industry factory.
Made fish skin product serves as fur clothing, leather shoes, suitcase, watchband, waistband etc.
Embodiment
Select for use the fresh fish skin of 12 kilograms plateau naked carp fish to carry out tanning.
(1) carries out the processing of giving of fresh fish skin, with 120 kg clear water preparation salt (Nacl) aqueous solution, wherein, the content of salt is 50g/l, and salt solution is poured in the pond, fresh fish skin with 12 kilograms plateau naked carp fish all immerses in the salt solution again, at normal temperatures, stirred 5-10 minute, after 10 hours the fresh fish skin is pulled out every 2 hours, cleaning then, peeling, fleshing obtain 10 kilograms of humidogene fish-skins.
(2) soak again, with the clear water preparation salt (Nacl) and the sodium bisulfite (NaHSO of 120 kg
3) the aqueous solution, wherein the content of salt is 20g/l, the content 1.8g/l of sodium bisulfite, its process for preparation be, earlier clear water poured in the paddle-tumble, and the water temperature in the groove is transferred at 30-35 ℃, if winter, temperature can be higher slightly.With other container salt, sodium bisulfite water are dissolved again, pour in the paddle-tumble, stirred 3 minutes, to give birth to fish-skin after stirring again immerses in the paddle-tumble, continuously stirring 30 minutes, stirred 10-15 minute every 2 hours later on, the water temperature of paddle-tumble is kept 30-35 ℃, after 18 hours the humidogene fish-skin is pulled out.
(3) carry out caustic dip, with the clear water preparation soda ash (Na of 120 kg
2CO
3) the aqueous solution, the content of its soda ash is 0.8g/l, its operating process is, earlier clear water is poured in the paddle-tumble, again soda ash is added in the entry by above-mentioned content, stirred 5-10 minute, after soda ash all is dissolved in the water, fish-skin is poured in the paddle-tumble, stirred and park after 3-5 minute, stirred 3-5 minute every 1 hour later on, this caustic dip process is to carry out under the normal temperature, time is 5 hours, and this moment, fish-skin had enlargement slightly, takes out at last to wash down.
(4) soften pickling, with 100 kilograms the softening pickling aqueous solution of clear water preparation.Wherein, the content of the salt in the solution (NaCl) is 30g/l, saltcake (Na
2SO
4) content be 60g/l, sulfuric acid (H
2SO
4) content be 3g/l, the content of 3350 aspartic proteases is 10 units/ml.PH value in the solution is 2.5-3.5, softening pickled temperature is 32 ℃, and the softening pickled time is 10 hours, and its operating process is earlier the clear water of above-mentioned weight to be put into paddle-tumble, heat to 32 ℃, will pour in the paddle-tumble except that the raw material 3350 aspartic proteases by above-mentioned content and stir evenly.In addition, 3350 aspartic proteases dissolving back is added in another sulculus, pour into again after stirring evenly in the paddle-tumble and stirred 15-20 minute, throw skin, do later on intermittently to stir with 35 ℃ warm water.After 10 hours, the absent-mindedness of dermatotome feel went out skin control water 1-2 hour, and the water flushing dried after 5-10 minute again.
(5) carry out degreasing, with the fish-skin after the pickling, many pieces of drum-type squeezing machine by adjustable gaps repeats 3-5 time.The every repetition once turned cylinder gap down 0.5 millimeter, so that pressure progressively increases to 30kg/cm
2, fish-skin is coated with spreads preprepared pasty state unslaked lime (CaO) then, place after 5-10 hour, treat that CaO does solid back and claps delime, water washes down water dumping and hands over step tanning down.
(6) carry out tanning, with 80 kilograms the clear water preparation tanning aqueous solution, wherein, the (KCr (SO of the chromium alum in the solution
4)
2.12H
2O) content is 5g/l, alum " KAl (SO
4)
2.12H
2O " content be 15g/l, the content of salt (NaCl) is 40g/l, saltcake (Na
2SO
4) content be 40g/l, sulfuric acid (H
2So
4) content be 2g/l, talcum powder (3MgO4SiO
2H
2O) content is 20g/l, soda ash (Na
2CO
3) content be 0.5g/l, sodium bicarbonate (NaHCO
3) content is 2g/l.The time of the tanning of tanning is 48 hours, its operating process is, earlier the clear water of above-mentioned weight is put into paddle-tumble, by above-mentioned content salt, saltcake, sulfuric acid are added in the paddle-tumble again, by above-mentioned content alum, chromium alum, talcum powder, soda ash are added in the paddle-tumble more afterwards, after raw material was all dissolved, pH value was 3.2, the throwing skin of heating is done after paddling 10-15 minute intermittently to stir.Hypodermis is heated after 12 hours to 40 ℃, during to 42 ℃, adds sodium bicarbonate again after 24 hours, and the add-on of sodium bicarbonate adds by the content of the 0.8g/l of sodium bicarbonate in solution that adds again, and pH value is 3.6, after 48 hours, goes out skin, leaves standstill then 20 hours.
(7) wash neutralization, with 100 kilograms clear water preparation flushing, in and the aqueous solution, the wherein sodium bicarbonate (NaHCO in the solution
3) content be 0.4g/l.Its operating process is that elder generation puts into paddle-tumble with the clear water of above-mentioned weight, by above-mentioned content sodium bicarbonate is added in the paddle-tumble again, after the dissolving, heats to 32 ℃, throws skin, intermittently stirs, and goes out skin after 30 minutes.
(8) press known method dyeing.
(9) wash stuffing, take infusion method, prepare 100 kilograms emulsion, the content of the sulfited fish oil emulsion in the emulsion is 50g/l.Its operating process is elder generation's emulsion by 100 kilograms of above-mentioned content preparations in paddle-tumble, and adds salt in emulsion, and the content of salt in emulsion is 40g/l, pour skin after stirring again into, stir evenly and heat to 40 ℃, pH value is 8, after 1.5 hours, go out the skin water dumping immediately, stretching, extension, drying.
(10) carry out buffing after the drying.
(11) ease back, prepare moisture 30% sawdust, the permeate agent 5881D (RO-(CH in the water
2CH
2O)
11H) content is 0.3g/l.Fish-skin is packed in the rotary drum, and dress skin amount is 3/4 of a rotary drum, a certain amount of sawdust of packing in rotary drum and preparing.The revolution of the rotary drum in the process that eases back is 15 rev/mins, and the time is 2 hours.
(12) carry out dedusting, covering with paint (spraying), extension cold at last, make plateau naked carp skin.
The made plateau naked carp skin of method of the present invention is through the check of Sichuan Province's leather products quality monitoring testing station, and assay is:
| Test event | Measured data |
| Tensile strength N/mm 2 | 32.8 |
| Elongation % | 45.5 |
| Tear strength N/mm | 69.0 |
| Shrinkage temperature ℃ | ≥90 |
| Color friction fastness (level) is done/is wet | 5.0/2.0 |
| PH value | 4.25 |
The made plateau naked carp skin of method of the present invention at light degree of selecting, be difficult for aspects such as aging, cold-resistant, water-fast bubble, scrubbing resistance, not delamination, good permeability, resistance to tension and all be better than the cattle and sheep skin.Have also that cost is low, advantage such as easy coloring, natural figure are good.Owing to adopted the degreasing method of machinery and physics, thereby significantly reduced the consumption of grease-removing agent, for reducing cost, reduce the condition of having created of polluting.The geographic fishery exploitation of the suitable especially Tibet plateau of this invention, for the economy of development ethnic minority favourable greatly.This fish-skin had both met the national standard (GB1872-93) of clothing leather, met the national standard (GB1873-93) of upper leather again.Therefore, can make fish skin products such as fur clothing, leather shoes, suitcase, watchband, waistband with this fish-skin.
Claims (3)
1, a kind of process for tanning of plateau naked carp skin is characterized in that including following process:
(1) the fresh fish skin gives treating processes, with the remaining meat on the immersion of fresh fish skin, cleaning, peeling, the removal skin, in the immersion step, used water is the water that contains salt, the weight ratio of used clear water and used fresh fish skin is 8-12: 1, salt content in the water is 45-55g/l, and the temperature of immersion is that the time of normal temperature, immersion is 8-16 hour
(2) soak process again, the fish-skin of above-mentioned processing is immersed in the aqueous solution of salt and sodium bisulfite, and stir, describedly soak in the process again, the weight ratio of water in the used solution and used wet fish-skin is 10-15: 1, and wherein the content of salt is that the content of 17-23g/l, sodium bisulfite is 1.5-2g/l in the solution, the temperature of soaking again is 30-35 ℃, the time of soaking again is 16-20 hour
(3) caustic dip process, above-mentioned multiple impregnated fish-skin is immersed in the aqueous solution of soda ash, and stir, skin has slightly to take out after the enlargement and washes down, and in the described caustic dip process, the water in the used solution and the weight ratio of used wet fish-skin are 10-15: 1, wherein the content of soda ash is 0.5-1g/l in the solution, the temperature of caustic dip is a normal temperature, and the time of caustic dip is 4-8 hour
(4) softening pickling process, the fish-skin immersion of above-mentioned processing is contained salt, saltcake, sulfuric acid, in the aqueous solution of 3350 aspartic proteases, pH value in the solution is 2.5-3.5, and stir, after treating the dermatotome absent-mindedness, go out skin control liquid, water flushing back dries again, in the described softening pickling process, the water in the used solution and the weight ratio of used wet fish-skin are 9-12: 1, and wherein the content of salt is 27-33g/l in the solution, the content of saltcake is 57-63g/l, vitriolic content is 2.7-3.3g/l, the content of 3350 aspartic proteases is 5-15 unit/ml, and the pH value in the solution is 2.5-3.5, and softening pickled temperature is 30-35 ℃, the softening pickled time is 8-12 hour
(5) skimming processes behind the roll extrusion degrease, is used the absorption method degrease with the fish-skin after the pickling again, rinses water dumping then well,
(6) tannery, the fish-skin immersion of above-mentioned processing is contained chromium alum, alum, salt, saltcake, sulfuric acid, talcum powder, soda ash, in the aqueous solution of sodium bicarbonate, under the situation of different pH values, divide two periods to stir, in being the 2.8-3.4 scope, stirs pH value, transferring the pH value of solution with sodium bicarbonate again is 3.4-4.0, stir again, go out skin afterwards, leave standstill, in tannery, the water in the used solution and the weight ratio of used wet fish-skin are 7-10: 1, wherein the content of chromium alum is 4-7g/l in the solution, and the content of alum is 12-17g/l, and the content of salt is 37-43g/l, the content of saltcake is 37-43g/l, vitriolic content is 1.7-2.3g/l, talcous content is 17-23g/l, and the content of soda ash is 0.4-0.6g/l, and the content of sodium bicarbonate is 1.8-2.2g/l, the temperature of tanning is 37-43 ℃, the time of tanning is 48-50 hour, and the interpolation content of the sodium bicarbonate of used accent pH value is 0.5-1g/l
(7) flushing, N-process, the fish-skin immersion of above-mentioned processing is contained in the aqueous solution of sodium bicarbonate, wash neutralization, in described flushing, the N-process, the water in the used solution and the weight ratio of used wet fish-skin are 8-12: 1, and wherein the content of sodium bicarbonate is 0.2-0.5g/l in the solution, the pH value of solution is 5 ± 1, flushing, neutral temperature are 30-35 ℃, and flushing, neutral time are 20-40 minute
(8) dyeing course dyes preceding preparation with the fish-skin of above-mentioned processing, promptly, contaminates again through retanning, degreasing, mordant dyeing, the step of fading,
(9) washing stuffing process after washing, is soaked the fish-skin of above-mentioned dip-dye in the emulsion that contains sulfited fish oil emulsion and salt, and stir, go out skin afterwards, water dumping, stretching, extension, drying are in the described washing stuffing process, the weight ratio of used emulsion and used wet fish-skin is 8-12: 1, wherein the content of sulfited fish oil emulsion is 40-60g/l in the emulsion, and the content of salt is 30-50g/l, and the pH value of emulsion is 7.8-8.2, the temperature of washing stuffing is 38-43 ℃
(10) buffing process is carried out buffing with above-mentioned dried fish-skin on buffing machine,
(11) process that eases back, fish-skin behind the above-mentioned buffing is eased back with the sawdust that contains moisture content in rotary drum, contain permeate agent in the moisture content in the sawdust, in the described process that eases back, the water content of used sawdust is 20-30%, the content of the permeate agent in the moisture content is 0.2-0.5g/l, and the time that eases back is 1-2 hour
(12) after fish-skin is made in dedusting, covering with paint, the cool process of extension.
2, the process for tanning of plateau naked carp skin according to claim 1 is characterized in that: in the described skimming processes, be the degreasing method that adopts the absorption method of the extrusion process of machinery (cylinder) and physics to be used in combination, will be in grease under the melting state at 30kg/cm
2Pressure down extruding come out.And then wash water dumping after the CaO (unslaked lime) that dermatotome is coated pasty state made its seasoning.
3, the purposes of the fish-skin made of claim 1 or 2 process for tanning, it is characterized in that: made fish-skin serves as fur clothing, leather shoes, suitcase, watchband, waistband.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96105274A CN1046551C (en) | 1996-05-29 | 1996-05-29 | Tanning of plateau naked carp skin and the fish skin product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96105274A CN1046551C (en) | 1996-05-29 | 1996-05-29 | Tanning of plateau naked carp skin and the fish skin product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1166528A CN1166528A (en) | 1997-12-03 |
| CN1046551C true CN1046551C (en) | 1999-11-17 |
Family
ID=5118811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96105274A Expired - Fee Related CN1046551C (en) | 1996-05-29 | 1996-05-29 | Tanning of plateau naked carp skin and the fish skin product |
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|---|---|
| CN (1) | CN1046551C (en) |
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| CN101245225B (en) * | 2007-02-16 | 2012-10-24 | 王冠红 | Multicolor composite shoe cream and manufacture method thereof |
| CN107361449B (en) * | 2017-09-11 | 2020-05-08 | 浙江工贸职业技术学院 | Shark leather shoe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4755186A (en) * | 1985-09-26 | 1988-07-05 | Bernardo von Beck | Process for the preparation of fish skin |
| US4877410A (en) * | 1986-03-07 | 1989-10-31 | Co.Ge.It. S.R.L. - Costruzioni Generali Italiane | Process for tanning fish skin |
| EP0575623A1 (en) * | 1991-12-16 | 1993-12-29 | Kaiho Co., Ltd. | Bactericide and method of retaining freshness of food |
-
1996
- 1996-05-29 CN CN96105274A patent/CN1046551C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4755186A (en) * | 1985-09-26 | 1988-07-05 | Bernardo von Beck | Process for the preparation of fish skin |
| US4877410A (en) * | 1986-03-07 | 1989-10-31 | Co.Ge.It. S.R.L. - Costruzioni Generali Italiane | Process for tanning fish skin |
| EP0575623A1 (en) * | 1991-12-16 | 1993-12-29 | Kaiho Co., Ltd. | Bactericide and method of retaining freshness of food |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1166528A (en) | 1997-12-03 |
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