CN103276117A - Method for processing sheepskin into fur or leather in multiple steps by using biological enzyme - Google Patents
Method for processing sheepskin into fur or leather in multiple steps by using biological enzyme Download PDFInfo
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Abstract
The invention discloses a method for performing multiple-step treatment on sheepskin by using biological enzymes, which is characterized in that industrial pancreatic enzymes, composite enzymes TA for acid pickling and softening and composite enzymes TB for acid pickling and softening are respectively used for performing softening treatment on sheepskin in an enzyme softening procedure and an acid pickling procedure; and the treated sheepskin is processed through the conventional process, thereby obtaining the very soft and lightweight sheepskin. Thus, the quality and added values of the sheepskin and products thereof are greatly improved.
Description
Technical field
The present invention relates to a kind ofly with biological enzyme sheep skin is processed into the method for Qiu Ge step by step, belong to the manufacture field of fur.
Background technology
Fur claims fur coat or Qiu Ge again.Fur goods always is the synonym of fashion elegance, have saying of " soft gold ".Fur garment once was wild nature, fiery and forthright synonym, along with improving constantly of transition of age and people's living standard, fur goods begins to develop towards the direction of " comfortable, light and soft, novel, elegant ", and the human consumer more and more favors " thin, light, soft " fur goods." thin " guaranteeing that various fur goodss have under the prerequisite of certain physical physical strength, reaches thin and plentiful requirement exactly." gently " refers to that fur goods feels fit, light, elegant when wearing, the sense of bearing a heavy burden, i.e. and so-called " light and matter is arranged, gently and not floating ", " soft " just refer to the soft and high resilience of fur.
At present, China has become world fur big country, and wherein the output of sheep skin is occupied significant proportion.But along with a large amount of imports of external raw material skin, the fur market of China has been subjected to certain impact.Homemade lamb skin is because the restriction of natural condition and scientific and technological level, be mainly and raise scattered or herd, and kind differs, so homemade sheep raw material skin exists, and the fleece thickness differs, the bigger problem of hide thickness size gap, and this has caused certain technical difficulty for the high-quality sheep skin of production.
Big quantity research in the past showed already, with regard to Technology, softened and had very important effect aspect the high-quality sheep skin of processing.About the existing many reports of the progress of enzyme bating.People such as Li Zhiqiang, Cheng Haiming, Liao Longli adopt and measure that the quantization method of total protein content and strong proline content combines with sensory evaluation in the bating liquor, various softening conditions have been studied in pig pelt softening process to EB-1 enzyme bating Effect on Performance (Li Zhiqiang, Cheng Haiming, Liao Longli, " Chinese leather " .2002,31 (13): 1-3).People such as a left side autumn, Chen Wuyong add DBS sodium (aniorfic surfactant), Dodecyl trimethyl ammonium chloride (cationic surfactant) and the peregal O(nonionic surfactant of different amounts respectively in pancreatin and AS1.398 enzyme solution), measure the influence (left side autumn that they are lived to enzyme, Chen Wuyong, Petr Hlavacek. " Chinese leather " .2009,38 (21): 21-25).Li Yanchun, Cheng Baozhen have carried out softening research (Li Yanchun, Cheng Baozhen, " Chinese leather " .2001,30 (21): 6-9) with aspartic protease and acid lipase enzyme to sheep clothing leather wet blue.
Research about lamb skin technology also has many reports.Song Weipeng, Liu Wei, Xiong Zheng for ultra-thin sheep garment leather processing technology for a detailed description (Song Weipeng, Liu Wei, Xiong Zheng, "China Leather" .2009,38 (9) :1-7).Each operation key problem in technology is inquired in the ultra-thin sheep clothing leather of the top grade of Zhang Yahong, the Zhu Qinxin manufacture craft, how to introduce operating procedure, make the softness of ultra-thin sheep clothing leather near cloth, the feel uniformity, the minimizing position is poor, improves leather class and finished leather utilization ratio, tear strength etc., reach the requirement (Zhang Yahong of clothing leather standard, Zhu Qinxin, " Chinese leather " .2009,38 (9): 4-7).But people such as Wei Hua have at length introduced sheep light face clothes double-face leather production technique, and some emphasis operations and link are commented on, illustrate the key problem in technology of sheep light face clothes double-face leather production and (but defended China, Ceng Rui, Wang Kunyu, Deng. " western leather " .2007,29 (2): 3-8).
Though above-mentioned report has been obtained certain achievement, but still there is following shortcoming:
1 payes attention to " doing soft " operation in the dry state arrangement too much, has ignored the importance that adds strong softening;
2 employed zymin kinds are single, can not reach desirable bating effect.
3 technological designs are relatively conservative, and the characteristic according to enzyme does not design arrangement, cause the softening efficient of zymin lower.
4 do not carry out system, comprehensively research to the production technology of thin light and soft sheep skin, more do not adopt biological enzyme that sheep skin is carried out substep processing.Do not see simultaneously the report that technical literature and amateur document are arranged yet.
Summary of the invention
The objective of the invention is provides a kind of method of lamb skin being carried out the biological enzyme step-by-step processing at the deficiencies in the prior art, be characterized in adopting the plurality of enzymes preparation substep that comprises prozyme rationally to use, make it to act synergistically, give full play to the advantage separately of biological enzyme, thereby improved softening efficient significantly, made finished product lightweight, softness more.
Purpose of the present invention is realized that by following technical measures wherein said raw material umber is parts by weight except specifying.
With biological enzyme the method that sheep skin is processed into Qiu Ge step by step be may further comprise the steps:
(1) enzyme bating
0.1 ~ 0.6 part in yellow soda ash, 0.4 ~ 1.2 part of industrial pancreatin, 1.0 ~ 3.0 parts of grease-removing agents and fur are added in the paddle-tumble for 100 parts, the regulator solution ratio is 14 ~ 20, in 30 ~ 34 ℃ of paddling 10 ~ 20 min of temperature, stop 15 ~ 30 min, after this every paddling 3 ~ 10 min, stop 20 ~ 30 min, so repeatable operation is 2 ~ 6 times, and positive and negative paddling hockets the softening situation of inspection, touch the part between the ribs and the hips position, back with thumb, lint has obscission, then softens to reach requirement, goes out the operation that drum carries out next procedure;
(2) washing
Fur is put into paddle-tumble for 100 parts, and the regulator solution ratio is 15 ~ 25, in 18 ~ 24 ℃ of positive and negative each paddling 3 ~ 10 min of temperature, goes out drum;
(3) pickling is softening
With 70 ~ 100 parts of Industrial Salts, 50 ~ 70 parts of Sodium sulfate anhydrous.min(99), add in the paddle-tumble, the regulator solution ratio is 18 ~ 22, in 18 ~ 24 ℃ of paddling 20 ~ 40min of temperature, again fur after the above-mentioned washing is added paddling 5 ~ 15 min, with 4 ~ 6 parts of formic acid of ten times of water dilutions, add back paddling 10 ~ 20 min, stopped 10 ~ 20 minutes, after this every paddling 3 ~ 6 min, stop 20 ~ 30 min, 3 ~ 5 times so repeatedly, and positive and negative paddling hockets, and adds 0.2 ~ 2 part of the softening special composite enzyme TA of pickling again, every paddling 5 ~ 15 min, stop 5 ~ 15 min, paddling is 2 ~ 4 times so repeatedly, and positive and negative paddling hockets, adding with 20 times of water weaker concns is 1 ~ 4 part in 98% sulfuric acid, every paddling 10 min stop 10 min, and paddling is 3 ~ 5 times so repeatedly, and positive and negative paddling hockets, be warming up to 30 ~ 34 ℃ next day, every paddling 3 ~ 6 min, stop 20 ~ 30 min, 3 ~ 5 times so repeatedly, and positive and negative paddling hockets, adding with 20 times of water weaker concns again is 1 ~ 4 part in 98% sulfuric acid, paddling 8 ~ 12 min, add 0.2 ~ 2 part of the softening special composite enzyme TB of pickling at last, paddling 10 ~ 20 min, after this, every paddling 3 ~ 6 min, stop 20 ~ 30 min, 6 ~ 12 times so repeatedly, and rotating hockets;
(4) chrome tanning
0.3 ~ 1 part of ESKATAN GLH, ESKATAN GLS are added in the pickling waste liquid for 0.3 ~ 1 part, adjust the temperature to 35 ~ 38 ℃, paddling 45 ~ 75 min add 10 ~ 20 parts of KMC chrome tanning agents, 2 ~ 10 parts in alum, and paddling 20 ~ 40 min stop drum and spend the night; Next day paddling 5 ~ 15 min.Be warmed up to 36 ~ 40 ℃, add 0.5 ~ 2 part in sodium bicarbonate, 0.5 ~ 2 part of sodium formiate, paddling 20 ~ 40 min; Add 0.5 ~ 2 part in sodium bicarbonate, paddling 20 ~ 40 min; Add 1 ~ 2.5 part in sodium bicarbonate, paddling 20 ~ 40 min, revolution 3 ~ 10 min stop 20 ~ 40 min, repeat twice; Add 0.9 ~ 1.5 part of sodium bicarbonate, paddling 20 ~ 40 min, regulating pH is 3.8 ~ 4.0, standing over night; Be warming up to 33 ~ 38 ℃ next day, paddling 20 ~ 40 min, regulating pH is 3.6 ~ 3.8, shrinkage temperature is not less than 90 ℃, goes out skin, takes the horse standing over night;
(5) pickling
Be 0.5 ~ 1 part in 85% formic acid with 8 ~ 10 times normal-temperature water weaker concns, add in the paddle-tumble that regulator solution is than 18 ~ 22,30 ~ 35 ℃ of temperature, paddling 15 ~ 25 min, go out skin at discharge opeing, and adjusting terminal point pH is 3.6 ~ 3.8, takes horse and leaves standstill 2 ~ 3 days;
(6) fluffing
Grind off unnecessary meat slag at fluffing machine;
(7) washing
Regulator solution is than 20 ~ 30,33 ~ 38 ℃ of temperature, paddling 5 ~ 15 min, discharge opeing;
(8) degreasing
The grease-removing agent Sima is added paddle-tumble for 80 1 ~ 5 parts, and the regulator solution ratio is 18 ~ 22, and temperature is 35 ~ 42 ℃, and paddling 15 ~ 25 min stopped 5 ~ 15 minutes, and paddling 15 ~ 25 min stop 5 ~ 15 min, paddling 15 ~ 25 min, and discharge opeing goes out drum;
(9) washing
Regulator solution is than 20 ~ 30,33 ~ 38 ℃ of temperature, paddling 5 ~ 15 min, discharge opeing;
(10) water dumping
In the whizzer water dumping, water content is 50% ~ 55%;
(11) extension dries dry
Hang in canopy is dried in the air in ventilation and dry dryly, control terminal point moisture content is 14 ~ 18%;
(12) water spray moisture regain
Leave standstill 8 ~ 10h behind the water spray, water content is 25 ~ 28%;
(13) oil spout moisture regain
After having sprayed water, cover completely with plastics film, leave standstill 8 ~ 10h, water content is 25 ~ 28%;
(14) scrape soft
Scrape softly for whole, stern back, crest portion scrape more, and part between the rib and the hip is scraped less;
(15) stretch
Carry out at striking-out machine;
(16) carding
Carry out at combing machine for fur, will tie the hair comb and loose;
(17) scald hair
Carry out at ironing machine, use earlier having one's hair waved, scald with 10% formic acid the back;
(18) cropping
Carry out at wool-clip machine, cut off floating hair;
(19) scald hair
Carry out at ironing machine, do and scald;
(20) warehouse-in is preserved.
Describedly may further comprise the steps with the refining of prozyme TA:
(1) feedstock analysis, detection
All material can use after the analyzing and testing of strictness is qualified;
(2) batching
1.. technical stipulation: the softening special composite enzyme TA of pickling prepares burden by following prescription:
2.. working method
With 537 aspartic proteases: 4～6 parts and industrial pancreatin mix for 2～4 parts, pulverize; 1～3 part of buffer reagent and load carriers are mixed for 2～5 parts, pulverize; Again the two is mixed, namely get the softening special composite enzyme TA of pickling;
(3) above-mentioned finished product is packaged spare by the 2kg/ bag.
The refining of described prozyme TB may further comprise the steps:
(1) feedstock analysis, detection
All material can use after the analyzing and testing of strictness is qualified;
(2) batching
1.. technical stipulation
The softening special composite enzyme TB of pickling prepares burden by following prescription:
2.. working method
1～4 part of 537 aspartic protease and stomach en-are mixed for 3～6 parts, pulverize; 1～3 part of buffer reagent and load carriers are mixed for 3～6 parts, pulverize; Again the two is mixed, namely get the softening special composite enzyme TB of pickling;
(3) package spare
Above-mentioned finished product is pressed 2kg/ bag packing, standby.
Described buffer reagent is any in ammonium sulfate, ammonium chloride, sodium bisulfite or the anhydrous sodium sulphate.
Described load carriers is at least a in kaolin, diatomite, flour and the polynite.
Performance test
Adopt National Development and Reform Committee's issue about fur garment standard QB/T 2822-2006 test, its leading indicator all meets above-mentioned national standard.
The present invention has the following advantages:
(1) simple for process, be convenient to grasp;
(2) implement this technology, need not increase any mechanical means;
(3) owing to soften proceed step by step, material usage reduces, and has saved material cost;
(4) yield of leather improves;
(5) adopt the technology of the present invention, can make extremely softness and high resilience, light comfortable sheep skin, improve the added value of fur goods.
Embodiment
Below by implementing that the present invention is carried out concrete description; be necessary to point out that at this present embodiment only is used for the present invention is further specified; and can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of foregoing invention.
Embodiment 1
(1) enzyme bating:
0.1 part in yellow soda ash, 0.4 part of industrial pancreatin, 1.0 parts of grease-removing agents and fur are added in the paddle-tumble for 100 parts.The regulator solution ratio is 14, temperature is 30 ℃.Paddling 10 min stopped 15 minutes.After this every paddling 3 min stop 20 min, and so repeatable operation is 2 times, and positive and negative paddling hockets.Check softening situation, touch the part between the ribs and the hips position, back with thumb, lint has obscission, then softens to reach requirement.Go out to rouse the operation of carrying out next procedure.
(2) washing:
Fur is put into paddle-tumble for 100 parts, and the regulator solution ratio is 15, temperature is 18 ℃.Positive and negative each paddling 3 min go out drum.
(3) pickling is softening:
Earlier 70 parts of Industrial Salts, Sodium sulfate anhydrous.min(99) are added in the paddle-tumble for 50 parts.Regulator solution than to 18, temperature is 18 ℃, paddling 20 min.To wash the back fur and add paddling 5 min.With 4 parts of formic acid of ten times of water dilutions, add back paddling 10 min, stop 10 min.After this every paddling 3 min stop 20 min, and 3 times so repeatedly, and positive and negative paddling hockets.Add 0.2 part of the softening special composite enzyme TA of pickling again, every paddling 5 min stop 5 min, and paddling is 2 times so repeatedly, and positive and negative paddling hockets.Adding with 20 times of water weaker concns again is 1 part in 98% sulfuric acid, and every paddling 10 min stop 10 min, and paddling is 3 times so repeatedly, and positive and negative paddling hockets.Next day, be warming up to 30 ℃.After reaching temperature, every paddling 3 min stop 20 min, and 3 times so repeatedly, and positive and negative paddling hockets.Adding with 20 times of water weaker concns again is 1 part in 98% sulfuric acid, paddling 8 min.Add 0.2 part of the softening special composite enzyme TB of pickling at last, paddling 10 min.Afterwards, every paddling 3 min stop 20 min, and 6 times so repeatedly, and rotating hockets.
(4) chrome tanning
0.3 part of ESKATAN GLH, ESKATAN GLS are added in the pickling waste liquid for 0.3 part, adjust the temperature to 35 ℃, paddling 45 min add 10 parts of KMC chrome tanning agents, 2 parts in alum, and paddling 20 min stop drum and spend the night; Next day paddling 5 min.Be warmed up to 36 ℃, add 0.5 part in sodium bicarbonate, 0.5 part of sodium formiate, paddling 20 min; Add 0.5 part in sodium bicarbonate, paddling 20 min; Add 1 part in sodium bicarbonate, paddling 20 min, revolution 3 min stop 20 min, repeat twice; Add 0.9 part of sodium bicarbonate, paddling 20 min, regulating pH is 3.8.Standing over night; Be warming up to 33 ℃ next day, paddling 20 min, regulating pH is 3.6, shrinkage temperature is not less than 90 ℃, goes out skin, takes the horse standing over night;
(5) pickling
Be 0.5 part in 85% formic acid with 8 times normal-temperature water weaker concns, add in the paddle-tumble that regulator solution is than 18,30 ℃ of temperature, paddling 15 min, go out skin at discharge opeing, and adjusting terminal point pH is 3.6, takes horse and leaves standstill 2 days;
(6) fluffing
Grind off unnecessary meat slag at fluffing machine;
(7) washing
Regulator solution is than 20,33 ℃ of temperature, paddling 5 min, discharge opeing;
(8) degreasing
The grease-removing agent Sima is added paddle-tumble for 80 1 parts, and the regulator solution ratio is 18, and temperature is 35 ℃, and paddling 15 min stop 5 min, and paddling 15 min stop 5 min, paddling 15 min, and discharge opeing goes out drum;
(9) washing
Regulator solution is than 20,33 ℃ of temperature, paddling 5 min, discharge opeing;
(10) water dumping
In the whizzer water dumping, water content is 50%;
(11) extension dries dry
Hang in canopy is dried in the air in ventilation and dry dryly, control terminal point moisture content is 14%;
(12) water spray moisture regain
Leave standstill 8h behind the water spray, water content is 25%;
(13) oil spout moisture regain
After having sprayed water, cover completely with plastics film, leave standstill 8h, water content is 25%;
(14) scrape soft
Scrape softly for whole, stern back, crest portion scrape more, and part between the rib and the hip is scraped less;
(15) stretch
Carry out at striking-out machine;
(16) carding
Carry out at combing machine for fur, will tie the hair comb and loose;
(17) scald hair
Carry out at ironing machine, use earlier having one's hair waved, scald with 10% formic acid the back;
(18) cropping
Carry out at wool-clip machine, cut off floating hair;
(19) scald hair
Carry out at ironing machine, do and scald;
(20) warehouse-in is preserved.
Embodiment 2
(1) enzyme bating:
0.3 part in yellow soda ash, 0.8 part of industrial pancreatin, 2.0 parts of grease-removing agents and fur are added in the paddle-tumble for 100 parts.The regulator solution ratio is 17, temperature is 32 ℃.Paddling 15 min stop 25 min.After this every paddling 5 min stop 25 min, and so repeatable operation is 4 times, and positive and negative paddling hockets.Check softening situation, touch the part between the ribs and the hips position, back with thumb, lint has obscission, then softens to reach requirement.Go out to rouse the operation of carrying out next procedure.
(2) washing:
Fur is put into paddle-tumble for 100 parts, and the regulator solution ratio is 20, temperature is 21 ℃.Positive and negative each paddling 5 min go out drum.
(3) pickling is softening:
Earlier 80 parts of Industrial Salts, Sodium sulfate anhydrous.min(99) are added in the paddle-tumble for 60 parts.Regulator solution than to 20, temperature is 21 ℃, paddling 30 min.To wash the back fur and add paddling 10 min.With 5 parts of formic acid of ten times of water dilutions, add back paddling 15 min, stop 15 min.After this every paddling 5 min stop 25 min, and 4 times so repeatedly, and positive and negative paddling hockets.Add 1 part of the softening special composite enzyme TA of pickling again, every paddling 10 min stop 10 min, and paddling is 3 times so repeatedly, and positive and negative paddling hockets.Adding with 20 times of water weaker concns again is 2 parts in 98% sulfuric acid, and every paddling 10 min stop 10 min, and paddling is 4 times so repeatedly, and positive and negative paddling hockets.Next day, be warming up to 32 ℃.After reaching temperature, every paddling 5 min stop 25 min, and 4 times so repeatedly, and positive and negative paddling hockets.Adding with 20 times of water weaker concns again is 2 parts in 98% sulfuric acid, paddling 10 min.Add 1 part of the softening special composite enzyme of pickling at last, paddling 15.Afterwards, every paddling 5 min stop 25 min, and 10 times so repeatedly, and rotating hockets.
(4) chrome tanning
0.5 part of ESKATAN GLH, ESKATAN GLS are added in the pickling waste liquid for 0.5 part, adjust the temperature to 37 ℃, paddling 60 min add 15 parts of KMC chrome tanning agents, 5 parts in alum, and paddling 30 min stop drum and spend the night; Next day paddling 10 min.Be warmed up to 38 ℃, add 1.5 parts in sodium bicarbonate, 1.5 parts of sodium formiates, paddling 30 min; Add 1.5 parts in sodium bicarbonate, paddling 30 min; Add 2.0 parts in sodium bicarbonate, paddling 30 min, revolution 5 min stop 30 min, repeat twice; Add 1.0 parts of sodium bicarbonate, paddling 30 min, regulating pH is 3.9.Standing over night; Be warming up to 35 ℃ next day, paddling 30 min, regulating pH is 3.7, shrinkage temperature is not less than 90 ℃, goes out skin, takes the horse standing over night;
(5) pickling
Be 0.7 part in 85% formic acid with 9 times normal-temperature water weaker concns, add in the paddle-tumble that regulator solution is than 20,33 ℃ of temperature, paddling 20 min, go out skin at discharge opeing, and adjusting terminal point pH is 3.7, takes horse and leaves standstill 2 days;
(6) fluffing
Grind off unnecessary meat slag at fluffing machine;
(7) washing
Regulator solution is than 25,35 ℃ of temperature, paddling 10 min, discharge opeing;
(8) degreasing
The grease-removing agent Sima is added paddle-tumble for 80 3 parts, and the regulator solution ratio is 20, and temperature is 40 ℃, and paddling 20 min stop 20 min, and paddling 20 min stop 10 min, paddling 20 min, and discharge opeing goes out drum;
(9) washing
Regulator solution is than 25,35 ℃ of temperature, paddling 10 min, discharge opeing;
(10) water dumping
In the whizzer water dumping, water content is 53%;
(11) extension dries dry
Hang in canopy is dried in the air in ventilation and dry dryly, control terminal point moisture content is 17%;
(12) water spray moisture regain
Leave standstill 9h behind the water spray, water content is 27%;
(13) oil spout moisture regain
After having sprayed water, cover completely with plastics film, leave standstill 9h, water content is 27%;
(14) scrape soft
Scrape softly for whole, stern back, crest portion scrape more, and part between the rib and the hip is scraped less;
(15) stretch
Carry out at striking-out machine;
(16) carding
Carry out at combing machine for fur, will tie the hair comb and loose;
(17) scald hair
Carry out at ironing machine, use earlier having one's hair waved, scald with 10% formic acid the back;
(18) cropping
Carry out at wool-clip machine, cut off floating hair;
(19) scald hair
Carry out at ironing machine, do and scald;
(20) warehouse-in is preserved.
Embodiment 3
(1) enzyme bating:
0.6 part in yellow soda ash, 1.2 parts of industrial pancreatin, 3.0 parts of grease-removing agents and fur are added in the paddle-tumble for 100 parts.The regulator solution ratio is 20, temperature is 34 ℃.Paddling 20 min stop 30 min.After this every paddling 10 min stop 30 min, and so repeatable operation is 6 times, and positive and negative paddling hockets.Check softening situation, touch the part between the ribs and the hips position, back with thumb, lint has obscission, then softens to reach requirement.Go out to rouse the operation of carrying out next procedure.
(2) washing:
Fur is put into paddle-tumble for 100 parts, and the regulator solution ratio is 25, temperature is 24 ℃.Positive and negative each paddling 10 minutes goes out drum.
(3) pickling is softening:
Earlier 100 parts of Industrial Salts, Sodium sulfate anhydrous.min(99) are added in the paddle-tumble for 70 parts.Regulator solution than to 22, temperature is 24 ℃, paddling 40 min.To wash the back fur and add paddling 15 min.With 6 parts of formic acid of ten times of water dilutions, add back paddling 20 min, stop 20 min.After this every paddling 6 min stop 30 min, and 5 times so repeatedly, and positive and negative paddling hockets.Add 2 parts of the softening special composite enzyme TA of pickling again, every paddling 15 min stop 15 min, and paddling is 4 times so repeatedly, and positive and negative paddling hockets.Adding with 20 times of water weaker concns again is 4 parts in 98% sulfuric acid, and every paddling 10 min stop 10 min, and paddling is 5 times so repeatedly, and positive and negative paddling hockets.Next day, be warming up to 34 ℃.After reaching temperature, every paddling 6 min stop 30 min, and 5 times so repeatedly, and positive and negative paddling hockets.Adding with 20 times of water weaker concns again is 4 parts in 98% sulfuric acid, paddling 12 min.Add 2 parts of the softening special composite enzyme TB of pickling at last, paddling 20 min.Afterwards, every paddling 6 min stop 25 min, and 12 times so repeatedly, and rotating hockets.
(4) chrome tanning
1 part of ESKATAN GLH, ESKATAN GLS are added in the pickling waste liquid for 1 part, adjust the temperature to 38 ℃, paddling 75 min add 20 parts of KMC chrome tanning agents, 10 parts in alum, and paddling 40 min stop drum and spend the night; Next day paddling 15 min.Be warmed up to 40 ℃, add 2 parts in sodium bicarbonate, 2 parts of sodium formiates, paddling 40 min; Add 2 parts in sodium bicarbonate, paddling 40 min; Add 2.5 parts in sodium bicarbonate, paddling 40 min, revolution 10 min stop 40 min, repeat twice; Add 1.5 parts of sodium bicarbonate, paddling 40 min, regulating pH is 4.0.Standing over night; Be warming up to 38 ℃ next day, paddling 40 min, regulating pH is 3.8, shrinkage temperature is not less than 90 ℃, goes out skin, takes the horse standing over night;
(5) pickling
Be 1 part in 85% formic acid with 8 ~ 10 times normal-temperature water weaker concns, add in the paddle-tumble that regulator solution is than 22,35 ℃ of temperature, paddling 25 min, go out skin at discharge opeing, and adjusting terminal point pH is 3.8, takes horse and leaves standstill 3 days;
(6) fluffing
Grind off unnecessary meat slag at fluffing machine;
(7) washing
Regulator solution is than 30,38 ℃ of temperature, paddling 15 min, discharge opeing;
(8) degreasing
The grease-removing agent Sima is added paddle-tumble for 80 5 parts, and the regulator solution ratio is 22, and temperature is 42 ℃, and paddling 25 min stop 15 min, and paddling 25 min stop 15 min, paddling 25 min, and discharge opeing goes out drum;
(9) washing
Regulator solution is than 30,38 ℃ of temperature, paddling 15 min, discharge opeing;
(10) water dumping
In the whizzer water dumping, water content is 55%;
(11) extension dries dry
Hang in canopy is dried in the air in ventilation and dry dryly, control terminal point moisture content is 18%;
(12) water spray moisture regain
Leave standstill 10h behind the water spray, water content is 28%;
(13) oil spout moisture regain
After having sprayed water, cover completely with plastics film, leave standstill 10h, water content is 28%;
(14) scrape soft
Scrape softly for whole, stern back, crest portion scrape more, and part between the rib and the hip is scraped less;
(15) stretch
Carry out at striking-out machine;
(16) carding
Carry out at combing machine for fur, will tie the hair comb and loose;
(17) scald hair
Carry out at ironing machine, use earlier having one's hair waved, scald with 10% formic acid the back;
(18) cropping
Carry out at wool-clip machine, cut off floating hair;
(19) scald hair
Carry out at ironing machine, do and scald;
(20) warehouse-in is preserved.
Annotate: ESKATAN GLH, ESKATAN GLS, Sima 80 are provided by German Si Mahuaxue company limited; Other material is commercial.
Claims (5)
1. one kind is processed into the method for Qiu Ge with biological enzyme step by step to sheep skin, it is characterized in that this method may further comprise the steps, and counts by weight:
(1) enzyme bating
0.1 ~ 0.6 part in yellow soda ash, 0.4 ~ 1.2 part of industrial pancreatin, 1.0 ~ 3.0 parts of grease-removing agents and fur are added in the paddle-tumble for 100 parts, the regulator solution ratio is 14 ~ 20, in 30 ~ 34 ℃ of paddling 10 ~ 20 min of temperature, stop 15 ~ 30 min, after this every paddling 3 ~ 10 min, stop 20 ~ 30 min, so repeatable operation is 2 ~ 6 times, and positive and negative paddling hockets the softening situation of inspection, touch the part between the ribs and the hips position, back with thumb, lint has obscission, then softens to reach requirement, goes out the operation that drum carries out next procedure;
(2) washing
Fur is put into paddle-tumble for 100 parts, and the regulator solution ratio is 15 ~ 25, in 18 ~ 24 ℃ of positive and negative each paddling 3 ~ 10 min of temperature, goes out drum;
(3) pickling is softening
With 70 ~ 100 parts of Industrial Salts, 50 ~ 70 parts of Sodium sulfate anhydrous.min(99), add in the paddle-tumble, the regulator solution ratio is 18 ~ 22, in 18 ~ 24 ℃ of paddling 20 ~ 40min of temperature, again fur after the above-mentioned washing is added paddling 5 ~ 15 min, with 4 ~ 6 parts of formic acid of ten times of water dilutions, add back paddling 10 ~ 20 min, stopped 10 ~ 20 minutes, after this every paddling 3 ~ 6 min, stop 20 ~ 30 min, 3 ~ 5 times so repeatedly, and positive and negative paddling hockets, and adds 0.2 ~ 2 part of the softening special composite enzyme TA of pickling again, every paddling 5 ~ 15 min, stop 5 ~ 15 min, paddling is 2 ~ 4 times so repeatedly, and positive and negative paddling hockets, adding with 20 times of water weaker concns is 1 ~ 4 part in 98% sulfuric acid, every paddling 10 min stop 10 min, and paddling is 3 ~ 5 times so repeatedly, and positive and negative paddling hockets, be warming up to 30 ~ 34 ℃ next day, every paddling 3 ~ 6 min, stop 20 ~ 30 min, 3 ~ 5 times so repeatedly, and positive and negative paddling hockets, adding with 20 times of water weaker concns again is 1 ~ 4 part in 98% sulfuric acid, paddling 8 ~ 12 min, add 0.2 ~ 2 part of the softening special composite enzyme TB of pickling at last, paddling 10 ~ 20 min, after this, every paddling 3 ~ 6 min, stop 20 ~ 30 min, 6 ~ 12 times so repeatedly, and rotating hockets;
(4) chrome tanning
0.3 ~ 1 part of ESKATAN GLH, ESKATAN GLS are added in the pickling waste liquid for 0.3 ~ 1 part, adjust the temperature to 35 ~ 38 ℃, paddling 45 ~ 75 min add 10 ~ 20 parts of KMC chrome tanning agents, 2 ~ 10 parts in alum, and paddling 20 ~ 40 min stop drum and spend the night; Next day paddling 5 ~ 15 min.Be warmed up to 36 ~ 40 ℃, add 0.5 ~ 2 part in sodium bicarbonate, 0.5 ~ 2 part of sodium formiate, paddling 20 ~ 40 min; Add 0.5 ~ 2 part in sodium bicarbonate, paddling 20 ~ 40 min; Add 1 ~ 2.5 part in sodium bicarbonate, paddling 20 ~ 40 min, revolution 3 ~ 10 min stop 20 ~ 40 min, repeat twice; Add 0.9 ~ 1.5 part of sodium bicarbonate, paddling 20 ~ 40 min, regulating pH is 3.8 ~ 4.0, standing over night; Be warming up to 33 ~ 38 ℃ next day, paddling 20 ~ 40 min, regulating pH is 3.6 ~ 3.8, shrinkage temperature is not less than 90 ℃, goes out skin, takes the horse standing over night;
(5) pickling
Be 0.5 ~ 1 part in 85% formic acid with 8 ~ 10 times normal-temperature water weaker concns, add in the paddle-tumble that regulator solution is than 18 ~ 22,30 ~ 35 ℃ of temperature, paddling 15 ~ 25 min, go out skin at discharge opeing, and adjusting terminal point pH is 3.6 ~ 3.8, takes horse and leaves standstill 2 ~ 3 days;
(6) fluffing
Grind off unnecessary meat slag at fluffing machine;
(7) washing
Regulator solution is than 20 ~ 30,33 ~ 38 ℃ of temperature, paddling 5 ~ 15 min, discharge opeing;
(8) degreasing
The grease-removing agent Sima is added paddle-tumble for 80 1 ~ 5 parts, and the regulator solution ratio is 18 ~ 22, and temperature is 35 ~ 42 ℃, and paddling 15 ~ 25 min stopped 5 ~ 15 minutes, and paddling 15 ~ 25 min stop 5 ~ 15 min, paddling 15 ~ 25 min, and discharge opeing goes out drum;
(9) washing
Regulator solution is than 20 ~ 30,33 ~ 38 ℃ of temperature, paddling 5 ~ 15 min, discharge opeing;
(10) water dumping
In the whizzer water dumping, water content is 50% ~ 55%;
(11) extension dries dry
Hang in canopy is dried in the air in ventilation and dry dryly, control terminal point moisture content is 14 ~ 18%;
(12) water spray moisture regain
Leave standstill 8 ~ 10h behind the water spray, water content is 25 ~ 28%;
(13) oil spout moisture regain
After having sprayed water, cover completely with plastics film, leave standstill 8 ~ 10h, water content is 25 ~ 28%;
(14) scrape soft
Scrape softly for whole, stern back, crest portion scrape more, and part between the rib and the hip is scraped less;
(15) stretch
Carry out at striking-out machine;
(16) carding
Carry out at combing machine for fur, will tie the hair comb and loose;
(17) scald hair
Carry out at ironing machine, use earlier having one's hair waved, scald with 10% formic acid the back;
(18) cropping
Carry out at wool-clip machine, cut off floating hair;
(19) scald hair
Carry out at ironing machine, do and scald;
(20) warehouse-in is preserved.
2. described in claim 1, with biological enzyme sheep skin is processed into the method for Qiu Ge step by step, it is characterized in that the refining of prozyme TA may further comprise the steps:
(1) feedstock analysis, detection
All material can use after the analyzing and testing of strictness is qualified;
(2) batching
1.. technical stipulation: the softening special composite enzyme TA of pickling prepares burden by following prescription:
2.. working method
With 537 aspartic proteases: 4～6 parts and industrial pancreatin mix for 2～4 parts, pulverize; 1～3 part of buffer reagent and load carriers are mixed for 2～5 parts, pulverize; Again the two is mixed, namely get the softening special composite enzyme TA of pickling;
(3) above-mentioned finished product is packaged spare by the 2kg/ bag.
3. with biological enzyme sheep skin is processed into the method for Qiu Ge step by step according to claim 1, it is characterized in that the refining of prozyme TB may further comprise the steps:
(1) feedstock analysis, detection
All material can use after the analyzing and testing of strictness is qualified;
(2) batching
1.. technical stipulation
The softening special composite enzyme TB of pickling prepares burden by following prescription:
2.. working method
1～4 part of 537 aspartic protease and stomach en-are mixed for 3～6 parts, pulverize; 1～3 part of buffer reagent and load carriers are mixed for 3～6 parts, pulverize; Again the two is mixed, namely get the softening special composite enzyme TB of pickling;
(3) package spare
Above-mentioned finished product is packaged spare by the 2kg/ bag.
4. with biological enzyme sheep skin is processed into the method for Qiu Ge step by step as claimed in claim 1 or 2, it is characterized in that buffer reagent is any in ammonium sulfate, ammonium chloride, sodium bisulfite or the anhydrous sodium sulphate.
5. with biological enzyme sheep skin is processed into the method for Qiu Ge step by step as claimed in claim 1 or 2, it is characterized in that load carriers is at least a in kaolin, diatomite, flour and the polynite.
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| CN104774982A (en) * | 2015-04-07 | 2015-07-15 | 陕西科技大学 | Retanning and fat-liquoring technological method of preparing flame-retardant leather by using modified montmorillonite |
| CN105524906A (en) * | 2014-09-29 | 2016-04-27 | 湖南新鸿鹰生物工程有限公司 | Leather softening compound enzyme with acid proteases and method for preparing leather softening compound enzyme |
| CN105925733A (en) * | 2016-07-01 | 2016-09-07 | 桐乡市雄鹰皮草有限公司 | Tanning and dyeing technique of mink skin with functions as fur and leather |
| WO2018201431A1 (en) * | 2017-05-05 | 2018-11-08 | 海安润德服装有限公司 | Method for use in manufacturing sheepskin fabric |
| CN110144424A (en) * | 2019-05-23 | 2019-08-20 | 漳州香洲皮革有限公司 | Using inferior grade gray wool skin be made can retanning wet blue processing technology |
| CN115323081A (en) * | 2022-09-23 | 2022-11-11 | 四川大学 | Softening method for preventing damaged surface and loose surface of leather |
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| CN105524906A (en) * | 2014-09-29 | 2016-04-27 | 湖南新鸿鹰生物工程有限公司 | Leather softening compound enzyme with acid proteases and method for preparing leather softening compound enzyme |
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| CN110144424A (en) * | 2019-05-23 | 2019-08-20 | 漳州香洲皮革有限公司 | Using inferior grade gray wool skin be made can retanning wet blue processing technology |
| CN110144424B (en) * | 2019-05-23 | 2021-10-26 | 漳州香洲皮革有限公司 | Processing technology for preparing retainable wet blue leather by using low-grade grey fur |
| CN115323081A (en) * | 2022-09-23 | 2022-11-11 | 四川大学 | Softening method for preventing damaged surface and loose surface of leather |
| CN115323081B (en) * | 2022-09-23 | 2023-08-18 | 四川大学 | Softening method for preventing leather from damaging and loosening |
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