CN105648122A - Kid lamb skin tanning process using amphoteric vegetable tanning agent - Google Patents
Kid lamb skin tanning process using amphoteric vegetable tanning agent Download PDFInfo
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- CN105648122A CN105648122A CN201610050693.4A CN201610050693A CN105648122A CN 105648122 A CN105648122 A CN 105648122A CN 201610050693 A CN201610050693 A CN 201610050693A CN 105648122 A CN105648122 A CN 105648122A
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- tanning
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- dermatotome
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/10—Vegetable tanning
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/30—Chemical tanning using physical means combined with chemical means
-
- 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
Abstract
A kid lamb skin tanning process using an amphoteric vegetable tanning agent is composed of a preparatory step, a tanning step, and a finishing step; the preparatory step comprises softening collected kid lamb raw skins to restore the raw skins to the conditions of fresh skins, and removing redundant components between skin plate fibers of the raw skins; the tanning step comprises primary tanning and main tanning; in the tanning step, filling primary tanning of the skins is completed mainly by means of the characteristics of macromolecules, high filling ability, good extensibility, and stable stereostructure of the vegetable tanning agent; further, in the tanning step, tanning is carried out by using a low-astringency low-concentration vegetable tanning liquor, and after the collagenous fibers of the naked skins are primarily immobilized, permeation and filling of the tanning liquor are completed gradually to guarantee that a tannin gradually permeates into the naked skins and bonds with skin collagen; and the finishing step comprises fat-liquoring, moisture regaining, staking and shaping of the skin plates as well as hair finishing. The kid lamb skins tanned by means of the kid lamb skin tanning process using the amphoteric vegetable tanning agent has the advantages of small difference between thin and thick parts of the skin plates, full plate texture, fine piles, and locks of bent hair that is natural, has rich wonderful luster and may rival Tan-sheep kid furs.
Description
Technical field:
The present invention relates to animal hide relevant tanning process technical field, particularly to a kind of cunning sub-skin amphimixis tanning agent process for tanning.
Background technology:
The cunning sub-dermatotome in Ningxia is thin, under hair is few and pin hair is abundant and fibre structure tight, fill difficulty, there is the drift sand that easily loses hair or feathers, burr dried and withered hairs in the cunning sub-skin of general tradition process for tanning tan, dermatotome hardens, fibre structure is tight, fills the technical problem of difficulty, technique itself causes simultaneously product, environmental pollution are big, and precious resource can not get effective exploitation always.
Along with the concern of environmental conservation is constantly increased by people, vegetable tanning agent will be caused to become process hides once again, fur coat technique processed be happy to adopt a kind of tanning agent, and vegetable tanned leather also will have the status that it once had in the past in world's curriery again, this is owing to vegetable tanning agent is by based on the natural resources that can regenerate; But, although the leather fillibility of alone vegetable tanning agent tanning is good, dermatotome consolidation and matte uniform, but harden through the leather dermatotome of this tanning agent tanning, surface is rougher, shrinkage temperature is low, so not generally being used. Both sexes syntans has that molecule is little, the low not easy oxidation discoloration of good penetrability, convergence, the advantage such as the leather surface exquisiteness of tanning, softness, good-extensibility, but big for fibre density, containing the low cunning sub-skin of oils and fats, be difficult to effectively fill as skin kinds such as lamb, West Road goats. At present, this type of leather process for tanning, with tans that combines such as traditional formaldehyde, chrome tanning agent, chrome and aluminium tanning agents, typically results in air soil pollution heavier.
Summary of the invention:
In view of this, it is necessary to a kind of cunning sub-skin amphimixis tanning agent process for tanning is provided.
A kind of cunning sub-skin amphimixis tanning agent process for tanning, cunning sub-skin amphimixis tanning agent process for tanning is made up of preparatory process, tanning processes and arranging process;
Preparatory process is cunning sub-raw material soft and soggyization that will collect, and makes raw material skin return to the state of Cortex Dictamni, and removes composition unnecessary between raw material skin dermatotome fiber, and composition unnecessary between dermatotome fiber includes subcutaneous tissue, sarolemma, protein;Concretely comprising the following steps of preparatory process:
Pond drum combines immersion, puts in soak vat by the raw material skin of collection, makes the abundant backwater of raw material skin, return to the naturalness of Cortex Dictamni, makes raw material skin deliquescing, removes the blood stains on raw material skin, foul and preservative, removes a part of interfibrillar substance, weakens subcutaneous tissue; Immersion carries out in paddle-tumble, rotary drum and pond, is undertaken by counterflow principle during immersion; Remove the salt in raw material epidermis face, dirt and blood by washing, and control temperature, make the salt in raw material skin dissolve, some auxiliary agents can also be added simultaneously, such as surfactant, antibacterial etc., make the immersion better effect of acquisition of salt brined hide; Undertaken by counterflow principle during immersion, Chi Yuchi, pond and drum, drum and drum owse concentration increase and decrease gradient, and velocity of rotation, rotation time all determine immersion quality;
Fleshing, uses fleshing machine to remove epidermal tissue's hardship meat on dermatotome surface, fat, adds 2g/L degreasing agent TL-80 in defat millpond, in pond, temperature controls is 38 degrees Celsius to 42 degrees Celsius, putting in pond by the dermatotome after fleshing, carry out defat, degreasing time is 30 minutes to 35 minutes.
Softening, pickling, dermatotome after defat is carried out enzyme bating, enzyme BRH0.5-1.0g/L is added in softening millpond, temperature in pond control be 30 degrees Celsius to 36 degrees Celsius, the enzyme bating time is 24 hours to 30 hours, pickling procedure is carried out after enzyme bating, it is PH2.5-3.5 by the acidity adjustment of the water of pickling millpond, then pickling procedure is carried out, the pickling time is 24 hours to 30 hours, pickling procedure can make hide fiber carry out, and tanning material is readily put into, thus the softness that the dermatotome made compares is careful;
After softening, pickling procedure complete, enter tanning processes, tanning processes includes just tanning and main tanning, tanning processes mainly utilizes vegetable tanning agent molecule is big, fillibility strong, good-extensibility, stereochemical structure are stable characteristic to complete the filling just tanning of leather, if with the direct tanning pelt of high concentration vegetable tan liquor, pelt syneresis can be caused, dead tan occurs, closely cause follow-up both sexes syntans cannot be carried out; Therefore, first with the low concentration vegetable tan liquor tanning that convergence is little, after the Collagen fiber of pelt is tentatively fixed, the infiltration being gradually completing owse is filled, it is ensured that tannin is permeated to pelt gradually, and is combined with collagen.
Salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 1g/L, wetting agent HAC1.0g/L, vegetable tanning agent 0.5-1.0g/L and vegetable tanning agent FNL1.0-1.5g/L is added in first tanning millpond, control in pond is temperature 30 degrees Celsius to 34 degrees Celsius, in pond, the pH value of solution controls as 3.5-4.0, being placed in pond by dermatotome and carry out just tanning, first tanning time is 12 hours to 15 hours;
After first tanning terminates, enter main tanning processes, main tanning adopts the main tan of both sexes syntans, the purpose of main tan be exactly utilize that both sexes syntans molecule is little, convergence good, the tanning advantage of good penetrability, good stability and tan skin soft texture, Inter-fiber voids unfilled for vegetable tanning agent macromole is filled perfect, strip the tannin going vegetable tanned leather interior surface layers unnecessary and non-tannis, it is prevented that in the problem dried and asperities and broken face occur in arrangement process simultaneously.
In main tanning millpond, add the temperature in salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 0.5g/L, auxiliary tanning agent 0.5-0.8g/L, both sexes syntans FG0.5-1.0g/L, fatting agent FLH1.0-1.5g/L, pond control to be 38 degrees Celsius to 40 degrees Celsius, it is 4.5 to 6.0 that pH value in pond controls, and the time of main tanning is 24 hours to 30 hours;
After main tanning processes terminates, entering rinsing process, add defat 2g/L and hydrogen peroxide 2g/L in rinsing water pond, it is 38 degrees Celsius to 42 degrees Celsius that the temperature in pond controls, and rinsing time is 0.5 hour, and wherein degreasing agent is degreasing agent JA-50;
Rinsing carries out the neutralization of dermatotome after terminating, remove the free acid in wet pelt plate, weaken the negative charge that dermatotome leather surface is excessively strong, it is prevented that the anionic materials used by retanning, dyeing, emulsion oil-filling combines at leather surface and causes not military infiltration too soon.
Adding sodium formate 2-4g/L, degreasing agent 2g/L and sulphuric acid 0.5g/L in millpond to neutralizing, it is 30 degrees Celsius that the temperature in pond controls, and the neutralization time is 3 hours, and degreasing agent JA-50 selected by degreasing agent;
After neutralization step completes, entering arranging process, arranging process comprises the following steps:
Stuffing, removes original for hide surface impurity work in-process, in order to make formation fat film protective layer around hide fiber, improves the flexibility of skin, stretches tropism and intensity, carry out stuffing;
Moisture regain, the dried cunning sub-skin of stuffing, dermatotome is very hard, and soft for the ease of scraping, it is necessary to suitably to spray water in inner face, this process is called " moisture regain " operation;
Scrape soft, the fur after moisture regain is carried out fleshing on Machine for treating leather surface, makes hide fiber extend, enlarged areas, dermatotome limbers up;
Shaping and whole hair, in order to make to scrape soft after dermatotome smooth, it is necessary to carry out shaping, hair side followed closely downwards on plank, dry in the shade, it is to avoid solar exposure, with Pumex or sand paper, face is polished after fully drying in the shade, then from nail-plate, take off deburring, then use comb carding, if broken skin should be sewed it up.
The present invention applies to a kind of leather two classes main tanning agent of tanning in distinct process route simultaneously and fills in tanning, forms complementation mutually, dissolves each other; Carrying out in the pre-tanning of 12 15 hours at vegetable tanning agent, utilize the big effect that can play occupy-place support of vegetable tanning agent molecule, dermatotome interfibrous " partly " is filled extension by preliminary realization. In force, product itself, technological process achieve cleaning and produce the whole process for tanning of the present invention.
The vegetable tanning agent of the present invention, the cunning sub-skin process for tanning formula that both sexes syntans combines, in tanning big according to vegetable tanning agent molecule, fillibility is strong, good-extensibility, stereochemical structure is stable but softness owed by dermatotome, surface is coarse, shrinkage temperature is low and can not the characteristic of good complete independently tanning, first degreasing agent is mainly adopted, auxiliary tanning agent, wetting agent etc. coordinate the first tan that vegetable tanning agent carries out 12 15 hours, the filling of fiber is extended by preliminary realization, then utilize both sexes syntans molecule little, the tanning advantage of convergence permeability good stability and tan skin soft texture, adopt fatting agent, sulphuric acid, soda, care hair agent, the main tan that both sexes syntans carries out 24 36 hours assisted by hydrogen peroxide etc., thus reaching fabulous filling tanning purpose. through this technique tanning cunning sub-skin dermatotome thin and thick position difference little, plate matter is plentiful, pile is fine and smooth, Mao Suicheng tuft bending from however be rich in fabulous gloss, can match in excellence or beauty with beach two fur.
Detailed description of the invention:
The present invention is directed to that cunning sub-skin dermatotome is thin, under hair is few and pin hair is abundant and the problems such as difficulty tightly filled by fibre structure, it is provided that two kinds of embodiments.
Embodiment one, cunning sub-skin amphimixis tanning agent process for tanning is made up of preparatory process, tanning processes and arranging process;
Preparatory process is cunning sub-raw material soft and soggyization that will collect, and makes raw material skin return to the state of Cortex Dictamni, and removes composition unnecessary between raw material skin dermatotome fiber, and composition unnecessary between dermatotome fiber includes subcutaneous tissue, sarolemma, protein;Concretely comprising the following steps of preparatory process:
Pond drum combines immersion, puts in soak vat by the raw material skin of collection, makes the abundant backwater of raw material skin, return to the naturalness of Cortex Dictamni, makes raw material skin deliquescing, removes the blood stains on raw material skin, foul and preservative, removes a part of interfibrillar substance, weakens subcutaneous tissue; Immersion carries out in paddle-tumble, rotary drum and pond, is undertaken by counterflow principle during immersion; Remove the salt in raw material epidermis face, dirt and blood by washing, and control temperature, make the salt in raw material skin dissolve, some auxiliary agents can also be added simultaneously, such as surfactant, antibacterial etc., make the immersion better effect of acquisition of salt brined hide; Undertaken by counterflow principle during immersion, Chi Yuchi, pond and drum, drum and drum owse concentration increase and decrease gradient, and velocity of rotation, rotation time all determine immersion quality;
Fleshing, uses fleshing machine to remove epidermal tissue's hardship meat on dermatotome surface, fat, adds 2g/L degreasing agent TL-80 in defat millpond, and in pond, temperature controls is 38 degrees Celsius, puts in pond by the dermatotome after fleshing, carries out defat, and degreasing time is 30 minutes.
Softening, pickling, dermatotome after defat being carried out enzyme bating, adds enzyme BRH0.5-1.0g/L in softening millpond, it is 30 degrees Celsius that the temperature in pond controls, the enzyme bating time is 24 hours, carry out pickling procedure after enzyme bating, be PH2.5-3.5 by the acidity adjustment of the water of pickling millpond, then carry out pickling procedure, the pickling time is 24 hours, pickling procedure can make hide fiber carry out, and tanning material is readily put into, thus the softness that the dermatotome made compares is careful;
After softening, pickling procedure complete, enter tanning processes, tanning processes includes just tanning and main tanning, tanning processes mainly utilizes vegetable tanning agent molecule is big, fillibility strong, good-extensibility, stereochemical structure are stable characteristic to complete the filling just tanning of leather, if with the direct tanning pelt of high concentration vegetable tan liquor, pelt syneresis can be caused, dead tan occurs, closely cause follow-up both sexes syntans cannot be carried out; Therefore, first with the low concentration vegetable tan liquor tanning that convergence is little, after the Collagen fiber of pelt is tentatively fixed, the infiltration being gradually completing owse is filled, it is ensured that tannin is permeated to pelt gradually, and is combined with collagen.
Salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 1g/L, wetting agent HAC1.0g/L, vegetable tanning agent 0.5g/L and vegetable tanning agent FNL1.0g/L is added in first tanning millpond, control in pond is temperature 30 degrees Celsius, in pond, the pH value of solution controls as 3.5-4.0, dermatotome is placed in pond and carries out just tanning, first tanning time is 12 hours, and vegetable tanning agent wherein used is vegetable tanning agent 704;
The touchstone of first tanning is: can tanning agent well cross-link with skin, it is subject to the impact of each side factors such as the distance of active group in the arrangement of collagenous amino acid molecule, the distance of protein adjacent molecule interchain active group and tannin molecule, bulk of molecule, spatial arrangements, therefore grabs and pinch its breathability of dermatotome inspection and just can know just tan degree.
After first tanning terminates, enter main tanning processes, main tanning adopts the main tan of both sexes syntans, the purpose of main tan be exactly utilize that both sexes syntans molecule is little, convergence good, the tanning advantage of good penetrability, good stability and tan skin soft texture, Inter-fiber voids unfilled for vegetable tanning agent macromole is filled perfect, strip the tannin going vegetable tanned leather interior surface layers unnecessary and non-tannis, it is prevented that in the problem dried and asperities and broken face occur in arrangement process simultaneously.
In main tanning millpond, add the temperature in salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 0.5g/L, auxiliary tanning agent 0.5/L, both sexes syntans FG0.5g/L, fatting agent FLH1.0g/L, pond control to be 38 degrees Celsius, it is 4.5 to 6.0 that pH value in pond controls, and the time of main tanning is 24 hours;
The touchstone of main tanning is: check whether that tanning is good, can by leaching skin taking-up, and dermatotome is outside, and lint is inwardly repeatedly rolled over, in corner with defeating most moisture, if repeatedly folding place presents white not clear, in tissue paper shape, it was demonstrated that tanning terminates.
After main tanning processes terminates, entering rinsing process, add defat 2g/L and hydrogen peroxide 2g/L in rinsing water pond, it is 38 degrees Celsius that the temperature in pond controls, and rinsing time is 0.5 hour, and wherein degreasing agent is degreasing agent JA-50;
Rinsing carries out the neutralization of dermatotome after terminating, remove the free acid in wet pelt plate, weaken the negative charge that dermatotome leather surface is excessively strong, it is prevented that the anionic materials used by retanning, dyeing, emulsion oil-filling combines at leather surface and causes not military infiltration too soon.
Adding sodium formate 2g/L, degreasing agent 2g/L and sulphuric acid 0.5g/L in millpond to neutralizing, it is 30 degrees Celsius that the temperature in pond controls, and the neutralization time is 3 hours, and degreasing agent JA-50 selected by degreasing agent;
After neutralization step completes, entering arranging process, arranging process comprises the following steps:
Stuffing, removes original for hide surface impurity work in-process, in order to make formation fat film protective layer around hide fiber, improves the flexibility of skin, stretches tropism and intensity, carry out stuffing;
Moisture regain, the dried cunning sub-skin of stuffing, dermatotome is very hard, and soft for the ease of scraping, it is necessary to suitably to spray water in inner face, this process is called " moisture regain " operation;
Scrape soft, the fur after moisture regain is carried out fleshing on Machine for treating leather surface, makes hide fiber extend, enlarged areas, dermatotome limbers up;
Shaping and whole hair, in order to make to scrape soft after dermatotome smooth, it is necessary to carry out shaping, hair side followed closely downwards on plank, dry in the shade, it is to avoid solar exposure, with Pumex or sand paper, face is polished after fully drying in the shade, then from nail-plate, take off deburring, then use comb carding, if broken skin should be sewed it up.
Embodiment two, concretely comprising the following steps of preparatory process:
Pond drum combines immersion, puts in soak vat by the raw material skin of collection, makes the abundant backwater of raw material skin, return to the naturalness of Cortex Dictamni, makes raw material skin deliquescing, removes the blood stains on raw material skin, foul and preservative, removes a part of interfibrillar substance, weakens subcutaneous tissue; Immersion carries out in paddle-tumble, rotary drum and pond, is undertaken by counterflow principle during immersion; Remove the salt in raw material epidermis face, dirt and blood by washing, and control temperature, make the salt in raw material skin dissolve, some auxiliary agents can also be added simultaneously, such as surfactant, antibacterial etc., make the immersion better effect of acquisition of salt brined hide; Undertaken by counterflow principle during immersion, Chi Yuchi, pond and drum, drum and drum owse concentration increase and decrease gradient, and velocity of rotation, rotation time all determine immersion quality;
Fleshing, uses fleshing machine to remove epidermal tissue's hardship meat on dermatotome surface, fat, adds 2g/L degreasing agent TL-80 in defat millpond, and in pond, temperature controls is 42 degrees Celsius, puts in pond by the dermatotome after fleshing, carries out defat, and degreasing time is 35 minutes.
Softening, pickling, dermatotome after defat being carried out enzyme bating, adds enzyme BRH1.0g/L in softening millpond, the temperature in pond controls as 36 degrees Celsius, the enzyme bating time is 30 hours, carry out pickling procedure after enzyme bating, be PH2.5-3.5 by the acidity adjustment of the water of pickling millpond, then carry out pickling procedure, the pickling time is 30 hours, pickling procedure can make hide fiber carry out, and tanning material is readily put into, thus the softness that the dermatotome made compares is careful;
After softening, pickling procedure complete, enter tanning processes, tanning processes includes just tanning and main tanning, tanning processes mainly utilizes vegetable tanning agent molecule is big, fillibility strong, good-extensibility, stereochemical structure are stable characteristic to complete the filling just tanning of leather, if with the direct tanning pelt of high concentration vegetable tan liquor, pelt syneresis can be caused, dead tan occurs, closely cause follow-up both sexes syntans cannot be carried out; Therefore, first with the low concentration vegetable tan liquor tanning that convergence is little, after the Collagen fiber of pelt is tentatively fixed, the infiltration being gradually completing owse is filled, it is ensured that tannin is permeated to pelt gradually, and is combined with collagen.
Salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 1g/L, wetting agent HAC1.0g/L, vegetable tanning agent 1.0g/L and vegetable tanning agent FNL1.5g/L is added in first tanning millpond, control in pond is temperature 34 degrees Celsius, in pond, the pH value of solution controls as 3.5-4.0, being placed in pond by dermatotome and carry out just tanning, first tanning time is 15 hours;
After first tanning terminates, enter main tanning processes, main tanning adopts the main tan of both sexes syntans, the purpose of main tan be exactly utilize that both sexes syntans molecule is little, convergence good, the tanning advantage of good penetrability, good stability and tan skin soft texture, Inter-fiber voids unfilled for vegetable tanning agent macromole is filled perfect, strip the tannin going vegetable tanned leather interior surface layers unnecessary and non-tannis, it is prevented that in the problem dried and asperities and broken face occur in arrangement process simultaneously.
In main tanning millpond, add the temperature in salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 0.5g/L, auxiliary tanning agent 0.8g/L, both sexes syntans FG1.0g/L, fatting agent FLH1.5g/L, pond control to be 40 degrees Celsius, it is 4.5 to 6.0 that pH value in pond controls, and the time of main tanning is 30 hours;
After main tanning processes terminates, entering rinsing process, add defat 2g/L and hydrogen peroxide 2g/L in rinsing water pond, it is 38 degrees Celsius to 42 degrees Celsius that the temperature in pond controls, and rinsing time is 0.5 hour, and wherein degreasing agent is degreasing agent JA-50;
Rinsing carries out the neutralization of dermatotome after terminating, remove the free acid in wet pelt plate, weaken the negative charge that dermatotome leather surface is excessively strong, it is prevented that the anionic materials used by retanning, dyeing, emulsion oil-filling combines at leather surface and causes not military infiltration too soon.
Adding sodium formate 4g/L, degreasing agent 2g/L and sulphuric acid 0.5g/L in millpond to neutralizing, it is 30 degrees Celsius that the temperature in pond controls, and the neutralization time is 3 hours, and degreasing agent JA-50 selected by degreasing agent;
After neutralization step completes, entering arranging process, arranging process comprises the following steps:
Stuffing, removes original for hide surface impurity work in-process, in order to make formation fat film protective layer around hide fiber, improves the flexibility of skin, stretches tropism and intensity, carry out stuffing;
Moisture regain, the dried cunning sub-skin of stuffing, dermatotome is very hard, and soft for the ease of scraping, it is necessary to suitably to spray water in inner face, this process is called " moisture regain " operation;
Scrape soft, the fur after moisture regain is carried out fleshing on Machine for treating leather surface, makes hide fiber extend, enlarged areas, dermatotome limbers up;
Shaping and whole hair, in order to make to scrape soft after dermatotome smooth, it is necessary to carry out shaping, hair side followed closely downwards on plank, dry in the shade, it is to avoid solar exposure, with Pumex or sand paper, face is polished after fully drying in the shade, then from nail-plate, take off deburring, then use comb carding, if broken skin should be sewed it up.
Vegetable tanning agent in present embodiment, the cunning sub-skin process for tanning formula that both sexes syntans combines, in tanning big according to vegetable tanning agent molecule, fillibility is strong, good-extensibility, stereochemical structure is stable but softness owed by dermatotome, surface is coarse, shrinkage temperature is low and can not the characteristic of good complete independently tanning, first degreasing agent is mainly adopted, auxiliary tanning agent, wetting agent etc. coordinate the first tan that vegetable tanning agent carries out 12 15 hours, the filling of fiber is extended by preliminary realization, then utilize both sexes syntans molecule little, the tanning advantage of convergence permeability good stability and tan skin soft texture, adopt fatting agent, sulphuric acid, soda, care hair agent, the main tan that both sexes syntans carries out 24 36 hours assisted by hydrogen peroxide etc., thus reaching fabulous filling tanning purpose.Through this technique tanning cunning sub-skin dermatotome thin and thick position difference little, plate matter is plentiful, pile is fine and smooth, Mao Suicheng tuft bending from however be rich in fabulous gloss, can match in excellence or beauty with beach two fur.
Claims (7)
1. a cunning sub-skin amphimixis tanning agent process for tanning, it is characterised in that: cunning sub-skin amphimixis tanning agent process for tanning is made up of preparatory process, tanning processes and arranging process;
Preparatory process, is cunning sub-raw material soft and soggyization that will collect, makes raw material skin return to the state of Cortex Dictamni, and remove composition unnecessary between raw material skin dermatotome fiber;
Tanning processes, including just tanning and main tanning, tanning processes mainly utilizes vegetable tanning agent molecule is big, fillibility strong, good-extensibility, stereochemical structure are stable characteristic to complete the filling just tanning of leather; Tanning processes is first with the low concentration vegetable tan liquor tanning that convergence is little, and after the Collagen fiber of pelt is tentatively fixed, the infiltration being gradually completing owse is filled, it is ensured that tannin is permeated to pelt gradually, and is combined with collagen;
Arranging process, including stuffing, the shaping of the soft dermatotome that gets damp again, scrapes and whole hair.
2. cunning sub-skin amphimixis tanning agent process for tanning as claimed in claim 1, it is characterised in that: concretely comprising the following steps of preparatory process:
Pond drum combines immersion, puts in soak vat by the raw material skin of collection, makes the abundant backwater of raw material skin, return to the naturalness of Cortex Dictamni, makes raw material skin deliquescing, removes the blood stains on raw material skin, foul and preservative, removes a part of interfibrillar substance, weakens subcutaneous tissue; Immersion carries out in paddle-tumble, rotary drum and pond, is undertaken by counterflow principle during immersion; Remove the salt in raw material epidermis face, dirt and blood by washing, and control temperature, make the salt in raw material skin dissolve, in soak vat, add auxiliary agent simultaneously, make the immersion of salt brined hide obtain better effect;
Fleshing, uses fleshing machine to remove epidermal tissue's hardship meat on dermatotome surface, fat, adds 2g/L degreasing agent TL-80 in defat millpond, in pond, temperature controls is 38 degrees Celsius to 42 degrees Celsius, putting in pond by the dermatotome after fleshing, carry out defat, degreasing time is 30 minutes to 35 minutes;
Softening, pickling, dermatotome after defat is carried out enzyme bating, enzyme BRH0.5-1.0g/L is added in softening millpond, temperature in pond control be 30 degrees Celsius to 36 degrees Celsius, the enzyme bating time is 24 hours to 30 hours, carries out pickling procedure after enzyme bating, is PH2.5-3.5 by the acidity adjustment of the water of pickling millpond, then carrying out pickling procedure, the pickling time is 24 hours to 30 hours.
3. cunning sub-skin amphimixis tanning agent process for tanning as claimed in claim 2, it is characterised in that: the auxiliary agent added in soak vat is surfactant or antibacterial.
4. cunning sub-skin amphimixis tanning agent process for tanning as claimed in claim 1 or 2, it is characterised in that: concretely comprising the following steps of first tanning:
Salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 1g/L, wetting agent HAC1.0g/L, vegetable tanning agent 0.5-1.0g/L and vegetable tanning agent FNL1.0-1.5g/L is added in first tanning millpond, control in pond is temperature 30 degrees Celsius to 34 degrees Celsius, in pond, the pH value of solution controls as 3.5-4.0, being placed in pond by dermatotome and carry out just tanning, first tanning time is 12 hours to 15 hours.
5. cunning sub-skin amphimixis tanning agent process for tanning as claimed in claim 4, it is characterized in that: main tanning adopts the main tan of both sexes syntans, main tanning millpond adds the temperature in salt 25g/L, Matrii Sulfas Exsiccatus 40g/L, sulphuric acid 0.5g/L, auxiliary tanning agent 0.5-0.8g/L, both sexes syntans FG0.5-1.0g/L, fatting agent FLH1.0-1.5g/L, pond control to be 38 degrees Celsius to 40 degrees Celsius, it is 4.5 to 6.0 that pH value in pond controls, and the time of main tanning is 24 hours to 30 hours.
6. cunning sub-skin amphimixis tanning agent process for tanning as claimed in claim 5, it is characterized in that: after main tanning processes terminates, enter rinsing process, degreasing agent 2g/L and hydrogen peroxide 2g/L is added in rinsing water pond, it is 38 degrees Celsius to 42 degrees Celsius that temperature in pond controls, rinsing time is 0.5 hour, and wherein degreasing agent is degreasing agent JA-50;
Rinsing carries out the neutralization of dermatotome after terminating, remove the free acid in wet pelt plate, weaken the negative charge that dermatotome leather surface is excessively strong, it is prevented that the anionic materials used by retanning, dyeing, emulsion oil-filling combines at leather surface and causes not military infiltration too soon;
Adding sodium formate 2-4g/L, degreasing agent 2g/L and sulphuric acid 0.5g/L in millpond to neutralizing, it is 30 degrees Celsius that the temperature in pond controls, and the neutralization time is 3 hours, and degreasing agent JA-50 selected by degreasing agent; After neutralization step completes, enter arranging process.
7. cunning sub-skin amphimixis tanning agent process for tanning as claimed in claim 1, it is characterized in that: the stuffing in arranging process is to be removed by original for hide surface impurity work in-process, in order to make formation fat film protective layer around hide fiber, improve the flexibility of skin, stretch tropism and intensity, carry out stuffing;
Moisture regain, the dried cunning sub-skin of stuffing, dermatotome is very hard, and soft for the ease of scraping, it is necessary to suitably to spray water in inner face, this process is called " moisture regain " operation;
Scrape soft, the fur after moisture regain is carried out fleshing on Machine for treating leather surface, makes hide fiber extend, enlarged areas, dermatotome limbers up;
Shaping and whole hair, in order to make to scrape soft after dermatotome smooth, it is necessary to carry out shaping, hair side followed closely downwards on plank, dries in the shade, it is to avoid solar exposure, with Pumex or sand paper, face is polished after fully drying in the shade, from nail-plate, then take off deburring, then use comb carding.
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