CN109576410A - A kind of Acipenser gueldenstaedti Brandt fishskin leather processing method - Google Patents
A kind of Acipenser gueldenstaedti Brandt fishskin leather processing method Download PDFInfo
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- CN109576410A CN109576410A CN201811509031.4A CN201811509031A CN109576410A CN 109576410 A CN109576410 A CN 109576410A CN 201811509031 A CN201811509031 A CN 201811509031A CN 109576410 A CN109576410 A CN 109576410A
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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
- C14C1/04—Soaking
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
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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
- C14C1/06—Facilitating unhairing, e.g. by painting, by liming
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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
- C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
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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
- C14C3/04—Mineral 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
- C14C3/08—Chemical tanning by organic agents
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- General Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
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Abstract
The invention belongs to leather processing fields, more particularly to a kind of Acipenser gueldenstaedti Brandt fishskin leather processing method, applicant is different from the sturgeon of other kinds for Acipenser gueldenstaedti Brandt, its bone plate decorative pattern is more intensive than other sturgeon kinds, it is abundant, and surface is gathered tiny spur, difficulty of processing is larger, the high problem of equipment requirement, provide a kind of Acipenser gueldenstaedti Brandt fishskin leather processing method, tanned Acipenser gueldenstaedti Brandt fish skin leather is soft, plentiful, bone plate is intact, and Acipenser gueldenstaedti Brandt fish skin leather quality percentage reaches 90% or more, substantially exceeds the yield rate of traditional process for tanning 30%.
Description
Technical field
The invention belongs to leather processing fields, and in particular to a kind of Acipenser gueldenstaedti Brandt fishskin leather processing method.
Background technique
Acipenser gueldenstaedti Brandt (A.gueldenstaedti) is different from the sturgeon of other kinds, its bone plate decorative pattern is than other sturgeons
Fish products kind is intensive, enriches, and surface is gathered tiny spur, and difficulty of processing is larger, and equipment requirement is high, and common processing method is difficult
Reach the demand of commodity production.In terms of the data retrieved and the paper delivered, there is presently no for Russian sturgeon
Mature leather processing method.
Summary of the invention
The present invention provides a kind of Acipenser gueldenstaedti Brandt fishskin leather processing method, this method is targetedly rich to Russian sturgeon
Rich beautiful bone plate is protected in tannery, and carries out sturgeon leather processing without chrome tanning process using environmental protection, after tanning
Acipenser gueldenstaedti Brandt fish skin leather it is soft, plentiful, bone plate is intact.
In order to achieve the above object, the present invention takes following technical measures:
A kind of Acipenser gueldenstaedti Brandt fishskin leather processing method, includes the following steps:
It chooses with the sturgeon skin wet salted hide of the Russian sturgeon of 10--20 kilogram weight；
1) the pre- degreasing of immersion
(1) 18-22 degree water temperature, sufficiently washing sturgeon skin, weigh after washing；
(2) water of the 200-300% of the sturgeon skin weight of step (1) acquisition, the immersion agent of 1-1.5%, 0.5-1% are weighed
Fungicide, 1-1.5% degreasing agent；
(3) ready sturgeon skin and water are put into rotary drum, is kept for 20-22 degrees Celsius of water temperature, immersion agent is then added, kills
Microbial inoculum, degreasing agent, rotary drum turn 10-20 minutes, stop 40-50 minutes, 2-4 revs/min, terminate altogether certainly feeding intake to start to rotary drum rotation
12-24h；
2) mechanical degreasing
Upward by the Acipenser gueldenstaedti Brandt fish-skin flesh noodles after immersion, fin is removed, wire brush or nylon bruss remove the flesh of fish, fat；
3) liming degreasing
(1) the sturgeon skin weighing obtained after the mechanical degreasing of step 2)；
(2) the 2-2.5% vulcanized sodium of sturgeon skin weight in step 3) (1) is weighed (for vulcanized sodium particle, effective content 50-
70%), the lime of 8-10%, the auxiliary liming agent of 0.5-1%, 1-2% degreasing agent, the water of 300-400%；
(3) by water and sturgeon skin investment rotary drum, water temperature is adjusted at 22-24 degrees Celsius, the dissolved vulcanized sodium of water is added
Solution, degreasing agent turn 50-70 minutes, 1-2 revs/min；Lime, auxiliary liming agent are added, turns to stop within 5-15 minutes 40-60 minutes,
1-2 revs/min of rotary drum, start of calculation to the rotary drum rotation end time that feeds intake certainly amounts to 24-36h；After completing this step, sturgeon skin expansion
Uniformly, skin body is strong, sturgeon skin ph > 12.
(4) wash: the abundant flowing water of 18-22 degree water temperature washes sturgeon skin in rotary drum；
(5) skin after washing is carried out to mechanical fleshing, fat again, method is identical as step 2).
4) deliming degreasing
(1) it weighs through step 3) treated sturgeon skin；
(2) ammonium sulfate of the 1.5-2% of the sturgeon skin weight of step 4) (1), the degreasing agent of 1.5-2%, 0.5-1% are weighed
Deliming agent, the water of 100-150%；
(3) water temperature is mixed up, sturgeon skin is put into, sequentially adds ammonium sulfate, deliming agent, degreasing agent, maintain water temperature at 31-34 and take the photograph
Family name's degree, turns 1-2h by 1-2 revs/min；Phenolphthalein indicator shows that notch 1/5--1/6 shows red heart, illustrates deliming in place；
(4) it washes: sufficiently washing sturgeon skin for 30-37 degrees Celsius in rotary drum；
5) pickling degreasing
(1) it weighs through step 4) treated sturgeon skin；
(2) water of the 100-150% of the sturgeon skin weight of step 5) (1), 16-20% salt, the second of 1-1.5% are weighed
Acid, the concentrated sulfuric acid of 1.5-2%, the nonionic degreasing agent of 1.5-2%；
(3) water temperature is mixed up, sturgeon skin is put into, salt, nonionic degreasing agent is added, maintains water temperature at 21-23 degrees Celsius, rotary drum
It 1-2 revs/min, rotates 5-15 minutes；The acetic acid after dilution is added later, 1-2 revs/min, turns 20-40 minutes；It is average later
Divide the 3-4 concentrated sulfuric acid being added after dilution, turns every time 20-40 minutes, 1-2 revs/min of revolving speed, then stop to rouse standing；From feeding intake
Start to amount to 24-36h to the standing end time；After completing this step, surface is astringent, and skin body is flexible, consolidation, solution ph 2.5；
(4) degreasing: taking out sturgeon skin under sour skin state, removes solid fat, method and step again on dry panel
It is rapid 2) identical, it puts into former pickling liquid and carries out again after sturgeon skin weighing；
6) tanning degreasing
(1) modified glutaraldehyde of the 2-3% of the sturgeon skin weight of step 5) is weighed, the aluminium tanningagent of 1-1.5%, 8-10%'s
The white tannin extract of Bai Danning, 8-10%, the formic acid of 1-1.5% receives, the mould inhibitor of the sodium bicarbonate of 2-2.5%, 1-1.5% (Lang Sheng)；
(2) tanning
Tanning carries out in former pickling liquid, maintains water temperature at 20-24 degrees Celsius, the modified glutaraldehyde after dilution is added, 1-2
Rev/min rotation 1-2h；Aluminium tanningagent is added, 1-2 revs/min, turns 1-2h；It is added white tannin and white tannin extract, 1-2 revs/min,
Turn 4-5h；Stop rousing standing, finishes total 18-24h to standing since feeding intake；Addition formic acid receives and mould inhibitor, 1-2 revs/min, turns
1-2h；The sodium bicarbonate after dilution is added later, sodium bicarbonate is equally divided into 8 additions, turns every time 30-50 minutes, 1-2 revs/min；
When solution ph is detected as 4.0, continue to turn 1-2h, 1-2 revs/min；Water temperature is risen to 40 degrees Celsius later, keeps water temperature, 1-2
Rev/min turn 1-2h；Boiling water detects 80 degrees Celsius of sturgeon leather shrinking temperature or more, stops rousing standing, to standing since feeding intake
Finish total 18-24h；Turn 1-2h for 1-2 revs/min later, then goes out to rouse after cleaning in room temperature flowing water rotary drum；
(3) degreasing
Through step 6) (2) treated sturgeon skin weighing；The water of the 200-300% of sturgeon skin weight is weighed, 3-4%'s is resistance to
High temperature nonionic degreasing agent；By sturgeon skin, in water and high temperature resistant nonionic degreasing agent investment rotary drum, keep water temperature 55-65 Celsius
Degree, rotates 8-10 hours by 1-2 revs/min, and then room temperature flowing water cleans in rotary drum, out drum control water purification；
7) retanning
(1) it weighs through step 6) treated sturgeon skin；
(2) formic acid of the 0.3-0.6% of step 7) (1) sturgeon skin weight is weighed, the modified glutaraldehyde of 1-2%, 2-4%'s
Acrylic acid double tanning agent, the white tannin of 4-8%, 2-4% anion fatting agent, the sodium bicarbonate of 0.5-1%, the water of 100-200%；
(3) ready sturgeon skin and water are put into rotary drum, adjusts temperature to 40-44 degrees Celsius, rotate rotary drum, is added dilute
The formic acid released turns 1-2h, and the modified glutaraldehyde after dilution is added turns 1-2h；White tannin is added and turns 1-2h；It is multiple that acrylic acid is added
Tanning agent, anion fatting agent rotate 1-2h；Stop rousing standing, be amounted to 18-24 hours since feeding intake to the standing end time；It
It is divided into the 3-4 sodium bicarbonate being added after dilution afterwards, turns every time 30-50 minutes, the above rotary drum revolving speed is 4-6 revs/min,
Stop rousing standing, be amounted to 18-24 hours since throwing sodium bicarbonate to the standing end time；Rotating 1-2h after standing, revolving speed 1-2 turns/
Minute, when solution ph detects 4.0, water purification is controlled in 37-40 DEG C water cleaning in rotary drum, and sturgeon skin does not go out to rouse, immediately next step
Operation；
8) it neutralizes
(1) water of the 100-200% of step 7) (1) sturgeon skin weight, the neutralization tannin (BASF) of 2-4%, 1- are weighed
2% sodium formate, the sodium bicarbonate of 0.5-1%；
(2) water is added in rotary drum, mixes up temperature to 40-44 degrees Celsius, neutralization tannin is added and turns 1-2h；Sodium formate is added to turn
1-2h；By sodium bicarbonate average mark 3-4 times addition after dilution, turn every time 30-50 minutes；The above rotary drum revolving speed is 4-6 revs/min
Clock, terminal solution ph detect 5.0-6.0；Then 50-60 degrees Celsius of hot water sufficiently cleans in rotary drum, out drum control water purification；
9) nail-plate is dry
10) surface polishes.
Compared with prior art, the invention has the following advantages that
1, tanned Acipenser gueldenstaedti Brandt fish skin leather is soft, plentiful, bone plate is intact；
2, marketing is easy to without chrome tanning process using completely new environmental protection；
3, very different degreasing agent and degreasing method is selected to carry out different lubricant components in different tanning processes
Degreasing respectively, it is cleaner than sturgeon skin, clean and tidy with conventional method after degreasing, it is easy to subsequent operation；
4, reach 90% or more using the tanned Acipenser gueldenstaedti Brandt fish skin leather quality percentage of the present invention, substantially exceed traditional tan
The yield rate of method 30% processed.
Detailed description of the invention
Fig. 1 is Acipenser gueldenstaedti Brandt fish skin leather prepared by the embodiment of the present invention 1.
Specific embodiment
Technical solution of the present invention is if not otherwise specified the ordinary skill in the art；The reagent or material,
If not otherwise specified, commercial channel is derived from.
Embodiment 1:
A kind of Acipenser gueldenstaedti Brandt fishskin leather processing method, includes the following steps:
According to the conventional cognitive of this field, sturgeon skin weight of the present invention refers both to be the weight in wet base of sturgeon skin；Each step
On the basis of the percentage additive amount of raw material used in the rapid weight of the sturgeon skin involved in each step.
1) the pre- degreasing of immersion
(1) 18-22 degree water temperature, sufficiently washing sturgeon skin, weigh after washing；
(2) 200% water of the sturgeon skin weight of step (1) acquisition, 1% immersion agent (BASF Eusapon are weighed
W), 1% fungicide (bright Sheng CISMOLLAN AN 90), 1% degreasing agent (fraternal chemical industry H900)；
(3) ready sturgeon skin and water are put into rotary drum, is kept for 20-22 degrees Celsius of water temperature, immersion agent is then added, kills
Microbial inoculum, degreasing agent, rotary drum turn 15 minutes, stop 45 minutes, 2 revs/min, terminate altogether for 24 hours certainly feeding intake to start to rotary drum rotation；
2) mechanical degreasing
Upward by the Acipenser gueldenstaedti Brandt fish-skin flesh noodles after immersion, it is fixed on panel, scissors removes fin, 80 mesh electric wires
Brush or nylon bruss remove the flesh of fish, fat；
3) liming degreasing
(1) the sturgeon skin weighing obtained after the mechanical degreasing of step 2)；
(2) 2% vulcanized sodium (for vulcanized sodium particle, effective content 60%) of sturgeon skin weight in step 3) (1) is weighed,
10% lime, 1% auxiliary liming agent (bright Sheng CISMOLLAN BH-C), 2% degreasing agent (BASF OC), 300% water；
(3) by water and sturgeon skin investment rotary drum, water temperature is adjusted at 23 degrees Celsius, it is molten that the dissolved vulcanized sodium of water is added
Liquid, degreasing agent turn 60 minutes, 1 rev/min；Lime, auxiliary liming agent are added, turns to stop 50 minutes for 10 minutes, 1 rev/min of rotary drum,
36h is amounted to from feeding intake to start to the rotary drum rotation end time；After completing this step, uniformly, skin body is strong, sturgeon for sturgeon skin expansion
Skin ph > 12.
(4) wash: the abundant flowing water of 18-22 degree water temperature washes sturgeon skin 20 minutes in rotary drum, and 1 rev/min of rotary drum revolving speed；
(5) skin after washing is carried out to mechanical fleshing, fat again, method is identical as step 2).
4) deliming degreasing
(1) it weighs through step 3) treated sturgeon skin；
(2) 2% ammonium sulfate of the sturgeon skin weight of step 4) (1) is weighed, 2% degreasing agent (BASF OC), 1%
Deliming agent (bright Sheng FRS-C), 100% water；
(3) water temperature is mixed up, sturgeon skin is put into, sequentially adds ammonium sulfate, deliming agent, degreasing agent, it is Celsius to maintain water temperature at 33
Degree, turns 2h by 1 rev/min；Phenolphthalein indicator shows that notch 1/5--1/6 shows red heart, illustrates deliming in place；
(4) it washes: 30-37 degrees Celsius sufficiently washing sturgeon skin 2 times, every time 10 minutes in rotary drum；
5) pickling degreasing
(1) it weighs through step 4) treated sturgeon skin；
(2) 100% water of the sturgeon skin weight of step 5) (1), 16% salt, 1% acetic acid, 2% dense sulphur are weighed
Acid, 2% nonionic degreasing agent (fraternal chemical industry)；
(3) water temperature is mixed up, sturgeon skin is put into, salt, nonionic degreasing agent is added, maintains water temperature at 22 degrees Celsius, rotary drum 1
Rev/min, it rotates 10 minutes；Acetic acid (acetic acid is diluted by the water of its 10 times of weight) after dilution is added later, turns by 1 rev/min
30 minutes；The average mark 4 times concentrated sulfuric acids (1:10 times of water dilution of weight ratio) being added after dilution later, turn 30 minutes, revolving speed 1 every time
Rev/min, then stop to rouse standing；It is amounted to for 24 hours since feeding intake to the standing end time；After completing this step, surface is astringent, skin
Body is flexible, consolidation, solution ph 2.5；
(4) degreasing: taking out sturgeon skin under sour skin state, removes solid fat, method and step again on dry panel
It is rapid 2) identical, it puts into former pickling liquid and carries out again after sturgeon skin weighing；
6) tanning degreasing
(1) 2% modified glutaraldehyde (BASF GT50) of the sturgeon skin weight of step 5) is weighed, 1% aluminium tanningagent,
10% white tannin (BASF DLE), 10% white tannin extract, 1% formic acid receives, 2% sodium bicarbonate, 1% mould inhibitor it is (bright
It contains)；
(2) tanning
Tanning carries out in former pickling liquid, maintains water temperature at 24 degrees Celsius, the modified glutaraldehyde (weight after dilution is added
Than material-water ratio 1:5 dilution), 1 rev/min of rotation 2h；Aluminium tanningagent is added, 1 rev/min, turns 2h；White tannin and white evergreen chinquapin is added
Glue, turns 4h by 1 rev/min；Stop rousing standing, be finished altogether for 24 hours since feeding intake to standing；Addition formic acid receives and mould inhibitor, and 1 rev/min
Clock turns 2h；Sodium bicarbonate (the 35 DEG C waters dissolutions of 20 times of parts by weight) after dilution is added later, sodium bicarbonate is equally divided into 8 times
It is added, turns 40 minutes, 2 revs/min every time；When solution ph is detected as 4.0, continue to turn 2h, 2 revs/min；Water temperature is risen to later
40 degrees Celsius, water temperature is kept, 2 revs/min turn 2h；Boiling water detects 80 degrees Celsius of sturgeon leather shrinking temperature or more, stops rousing standing,
It is finished altogether for 24 hours since feeding intake to standing；Turn 2h for 2 revs/min later, then cleaning goes out after twenty minutes in room temperature flowing water rotary drum
Drum.
(3) degreasing
Through step 6) (2) treated sturgeon skin weighing；200% water of sturgeon skin weight is weighed, 3% high temperature resistant is non-
Ion degreasing agent (BASF Eusapon OC, fraternal chemical industry H901,1:1 ratio mixing)；By sturgeon skin, water and high temperature resistant it is non-from
In sub- degreasing agent investment rotary drum, is kept for 60 degrees Celsius of water temperature, 2 revs/min, rotated 8 hours, then room temperature flowing water cleans in rotary drum
20 minutes, 48h or more was piled up in drum control water purification out.
Sturgeon leather after degreasing, a is in uniform light blue white as shown in figure 1, and leather fiber fully opens, and finger pressure has fluffy
Feel, the natural oil in sturgeon leather removes completely substantially, and skin is strong, without rotten skin, surface cleaning, in addition to leather smells, without it
He is pungent taste.Sturgeon leather is sent to SGS mechanism and is detected, and detection is to end 2015 12 based on European chemical balance motion administration
That announced the moon 17 pays close attention to substance candidate list (according to No. 1907/2006 REACH regulation of European Union) for the high of authorization review, right
168 kinds high concern substance (SVHC) carries out screening test, while detecting to lead content, and detection content and result are as follows:
According to specific test scope and analytical technology, the high concern material concentration tested in sample is entrusted to be both less than
The testing result of 0.1% lead is as follows:
Remarks:
(1) 1mg/kg=0.0001%
(2) MDL=method detection limit
(3) (< MOL) is not detected in ND=
(4) "-"=do not provide
Lead (Pb)
Measurement Method: it measures referring to US EPA method 3052:1996, is analyzed using CP-OES.
7) retanning
(1) it weighs through step 6) treated sturgeon skin；
(2) 0.3% formic acid of step 7) (1) sturgeon skin weight, 2% modified glutaraldehyde are weighed, 2% acrylic acid is answered
Tanning agent, 4% white tannin, 2% anion fatting agent, 0.5% sodium bicarbonate, 100% water
(3) ready sturgeon skin and water are put into rotary drum, adjusts temperature to 42 degrees Celsius, rotate rotary drum, dilution is added
Good formic acid (1:10 times of water dilution of weight ratio), turns 1h, the modified glutaraldehyde (1:5 times of water dilution of weight ratio) after dilution is added,
Turn 1h；White tannin is added and turns 2h；Acrylic acid double tanning agent, anion fatting agent is added, rotates 2h；Stop rousing standing, since feeding intake
It is amounted to 24 hours to the end time is stood；Being divided into the sodium bicarbonate that 4 times are added after dilution later, (1:20 times of water of weight ratio is dilute
Release), every time turn 40 minutes, the above rotary drum revolving speed is 4 revs/min, stop rouse standing, since throwing sodium bicarbonate to standing at the end of
Between amount to 24 hours；1h is rotated after static, 2 revs/min of revolving speed, solution ph detects 4.0, and (37-40 is Celsius for warm water in rotary drum
Degree) cleaning 2 times, each minute, water purification is controlled, sturgeon skin does not go out to rouse, immediately operate in next step；
8) it neutralizes
(1) 100% water of step 7) (1) sturgeon skin weight, 2% neutralization tannin (BASF), 1% formic acid are weighed
Sodium, 0.5% sodium bicarbonate；
(2) water is added in rotary drum, mixes up temperature to 42 degrees Celsius, neutralization tannin is added and turns 2h；Sodium formate is added and turns 2h；It will
Sodium bicarbonate (1:20 times of water dilution of weight ratio) after dilution is averagely added three times, and is turned 40 minutes every time；The above rotary drum revolving speed is
4 revs/min, terminal solution ph detection 5.5；Then 55 degrees Celsius of hot water sufficiently clean twice in rotary drum, and 10 minutes every time, out
Drum control water purification, is piled up more than for 24 hours.
9) nail-plate is dry
Downward by the good sturgeon skin flesh noodles of tanning, tiling is stretched on ready plank, is uniformly fixed with nail gun, dry
Dry room drying, or dry in the shade naturally, effect of drying in the shade naturally is preferable.
10), surface polishes
Equipment: specialized leathers polishing machine
Operation: sturgeon skin is held with plank, according to the distribution of bone plate, uniform polish is to get the Acipenser gueldenstaedti Brandt being prepared
Fishskin leather is as shown in Figure 1, tanned Acipenser gueldenstaedti Brandt fish skin leather is soft, plentiful, bone plate is intact；Using completely new environmentally friendly nothing
Chrome tanning process, the Acipenser gueldenstaedti Brandt fish skin leather quality percentage being prepared reach 90% or more, substantially exceed traditional process for tanning
30% yield rate.
Claims (1)
1. a kind of Acipenser gueldenstaedti Brandt fishskin leather processing method, includes the following steps:
It chooses with the sturgeon skin wet salted hide of the Russian sturgeon of 10--20 kilogram weight；
1) the pre- degreasing of immersion
(1) 18-22 degree water temperature, sufficiently washing sturgeon skin, weigh after washing；
(2) water of the 200-300% of the sturgeon skin weight of step (1) acquisition, the immersion agent of 1-1.5%, 0.5-1% sterilization are weighed
Agent, 1-1.5% degreasing agent；
(3) ready sturgeon skin and water are put into rotary drum, is kept for 20-22 degrees Celsius of water temperature, immersion agent, sterilization is then added
Agent, degreasing agent, rotary drum turn 10-20 minutes, stop 40-50 minutes, 2-4 revs/min, terminate altogether certainly feeding intake to start to rotary drum rotation
12- 24h；
2) mechanical degreasing
Upward by the Acipenser gueldenstaedti Brandt fish-skin flesh noodles after immersion, fin is removed, wire brush or nylon bruss remove the flesh of fish, fat；
3) liming degreasing
(1) the sturgeon skin weighing obtained after step 2 machinery degreasing；
(2) the 2-2.5% vulcanized sodium (for vulcanized sodium particle, effective content 50-70%) of sturgeon skin weight in step 3) (1) is weighed,
The lime of 8-10%, the auxiliary liming agent of 0.5-1%, 1-2% degreasing agent, the water of 300-400%；
(3) water temperature will be adjusted at 22-24 degrees Celsius in water and sturgeon skin investment rotary drum, be added the dissolved sodium sulfide solution of water,
Degreasing agent turns 50-70 minutes, 1-2 revs/min；Lime, auxiliary liming agent are added, turns to stop within 5-15 minutes 40-60 minutes, rotary drum 1-
2 revs/min, start of calculation to the rotary drum rotation end time that feeds intake certainly amounts to 24-36h；After completing this step, sturgeon skin expansion is uniform,
Skin body is strong, sturgeon skin ph > 12；
(4) wash: the abundant flowing water of 18-22 degree water temperature washes sturgeon skin in rotary drum；
(5) skin after washing is carried out to mechanical fleshing, fat again, method is identical as step 2；
4) deliming degreasing
(1) it weighs through step 3) treated sturgeon skin；
(2) ammonium sulfate of the 1.5-2% of the sturgeon skin weight of step 4) (1), the degreasing agent of 1.5-2%, the deliming of 0.5-1% are weighed
Agent, the water of 100-150%；
(3) water temperature is mixed up, sturgeon skin is put into, sequentially adds ammonium sulfate, deliming agent, degreasing agent, it is Celsius to maintain water temperature at 31-34
Degree, turns 1-2h by 1-2 revs/min；Phenolphthalein indicator shows that notch 1/5--1/6 shows red heart, illustrates deliming in place；
(4) it washes: sufficiently washing sturgeon skin for 30-37 degrees Celsius in rotary drum；
5) pickling degreasing
(1) it weighs through step 4) treated sturgeon skin；
(2) water of the 100-150% of the sturgeon skin weight of step 5) (1), 16-20% salt, the acetic acid of 1-1.5%, 1.5- are weighed
2% concentrated sulfuric acid, the nonionic degreasing agent of 1.5-2%；
(3) water temperature is mixed up, sturgeon skin is put into, salt, nonionic degreasing agent is added, maintains water temperature at 21-23 degrees Celsius, rotary drum 1-2
Rev/min, it rotates 5-15 minutes；The acetic acid after dilution is added later, 1-2 revs/min, turns 20-40 minutes；Average mark 3- later
4 concentrated sulfuric acids being added after dilution turn 20-40 minutes every time, 1-2 revs/min of revolving speed, then stop to rouse standing；Since feeding intake
24-36h is amounted to the end time is stood；After completing this step, surface is astringent, and skin body is flexible, consolidation, solution ph 2.5；
(4) degreasing: sturgeon skin is taken out under sour skin state, removes solid fat, method and step 2 again on dry panel
It is identical, it puts into former pickling liquid and carries out again after sturgeon skin weighing；
6) tanning degreasing
(1) modified glutaraldehyde of the 2-3% of the sturgeon skin weight of step 5), the aluminium tanningagent of 1-1.5%, the white list of 8-10% are weighed
Rather, the white tannin extract of 8-10%, the formic acid of 1-1.5% receives, the mould inhibitor of the sodium bicarbonate of 2-2.5%, 1-1.5% (Lang Sheng)；
(2) tanning
Tanning carries out in former pickling liquid, maintains water temperature at 20-24 degrees Celsius, the modified glutaraldehyde after dilution is added, 1-2 turns/
Minute rotation 1-2h；Aluminium tanningagent is added, 1-2 revs/min, turns 1-2h；White tannin and white tannin extract is added, 1-2 revs/min, turns
4-5h；Stop rousing standing, finishes total 18-24h to standing since feeding intake；Addition formic acid receives and mould inhibitor, 1-2 revs/min, turns 1-
2h；The sodium bicarbonate after dilution is added later, sodium bicarbonate is equally divided into 8 additions, turns every time 30-50 minutes, 1-2 revs/min；It is molten
When liquid ph is detected as 4.0, continue to turn 1-2h, 1-2 revs/min；Water temperature is risen to 40 degrees Celsius later, keeps water temperature, 1-2 turns/
Minute turns 1-2h；Boiling water detects 80 degrees Celsius of sturgeon leather shrinking temperature or more, stops rousing standing, finish since feeding intake to standing
Total 18-24h；Turn 1-2h for 1-2 revs/min later, then goes out to rouse after cleaning in room temperature flowing water rotary drum；
(3) degreasing
Through step 6) (2) treated sturgeon skin weighing；The water of the 200-300% of sturgeon skin weight is weighed, the high temperature resistant of 3-4% is non-
Ion degreasing agent；By sturgeon skin, in water and high temperature resistant nonionic degreasing agent investment rotary drum, kept for 55-65 degrees Celsius of water temperature, 1-2
Rev/min, it rotates 8-10 hours, then room temperature flowing water cleans in rotary drum, out drum control water purification；
7) retanning
(1) it weighs through step 6) treated sturgeon skin；
(2) formic acid of the 0.3-0.6% of step 7) (1) sturgeon skin weight, the modified glutaraldehyde of 1-2%, the acrylic acid of 2-4% are weighed
Retanning agent, the white tannin of 4-8%, 2-4% anion fatting agent, the sodium bicarbonate of 0.5-1%, the water of 100-200%；
(3) ready sturgeon skin and water are put into rotary drum, adjusts temperature to 40-44 degrees Celsius, rotate rotary drum, addition dilutes
Formic acid, turn 1-2h, the modified glutaraldehyde after dilution is added turns 1-2h；White tannin is added and turns 1-2h；Acrylic acid retanning is added
Agent, anion fatting agent rotate 1-2h；Stop rousing standing, be amounted to 18-24 hours since feeding intake to the standing end time；Later
It is divided into the 3-4 sodium bicarbonate being added after dilution, is turned every time 30-50 minutes, the above rotary drum revolving speed is 4-6 revs/min, is stopped
Drum is stood, and is amounted to 18-24 hours since throwing sodium bicarbonate to the standing end time；Rotate 1-2h after standing, 1-2 revs/min of revolving speed
Clock, when solution ph detects 4.0, water purification is controlled in 37-40 DEG C water cleaning in rotary drum, and sturgeon skin does not go out to rouse, and immediately next step is grasped
Make；
8) it neutralizes
(1) water of the 100-200% of step 7) (1) sturgeon skin weight, the neutralization tannin (BASF) of 2-4%, the first of 1-2% are weighed
Sour sodium, the sodium bicarbonate of 0.5-1%；
(2) water is added in rotary drum, mixes up temperature to 40-44 degrees Celsius, neutralization tannin is added and turns 1-2h；Sodium formate is added and turns 1-
2h；By sodium bicarbonate average mark 3-4 times addition after dilution, turn every time 30-50 minutes；The above rotary drum revolving speed is 4-6 revs/min
Clock, terminal solution ph detect 5.0-6.0；Then 50-60 degrees Celsius of hot water sufficiently cleans in rotary drum, out drum control water purification；
9) nail-plate is dry
10) surface polishes.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199676A (en) * | 2011-04-12 | 2011-09-28 | 王学川 | Sturgeon skin chrome tanning leather production process |
| CN103215391A (en) * | 2013-04-23 | 2013-07-24 | 何裕华 | Non-chromium leather tanning method |
| CN105132596A (en) * | 2015-07-30 | 2015-12-09 | 兴业皮革科技股份有限公司 | Production technology of cow skin nappa leather |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199676A (en) * | 2011-04-12 | 2011-09-28 | 王学川 | Sturgeon skin chrome tanning leather production process |
| CN103215391A (en) * | 2013-04-23 | 2013-07-24 | 何裕华 | Non-chromium leather tanning method |
| CN105132596A (en) * | 2015-07-30 | 2015-12-09 | 兴业皮革科技股份有限公司 | Production technology of cow skin nappa leather |
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