CN109576411A - A kind of sturgeon leather degreasing method - Google Patents
A kind of sturgeon leather degreasing method Download PDFInfo
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- CN109576411A CN109576411A CN201811505949.1A CN201811505949A CN109576411A CN 109576411 A CN109576411 A CN 109576411A CN 201811505949 A CN201811505949 A CN 201811505949A CN 109576411 A CN109576411 A CN 109576411A
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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
- 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
- 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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Abstract
The invention belongs to leather processing fields, specifically disclose a kind of sturgeon leather degreasing method, the present invention is directed to the Fat Distribution feature of sturgeon skin, very different degreasing agent and degreasing method is selected to carry out degreasing respectively different lubricant components in different tanning processes, sturgeon skin revolutionary cadre after degreasing is net, clean and tidy, it is suitble to the coloration requirements of various colors sturgeon leather, full color is gorgeous；Leather after tanning degreasing is through detecting, unleaded detection, while carrying out screening test to 168 kinds high concern substance (SVHC), and material concentration is both less than 0.1%, is easy to the popularization of market large size.
Description
Technical field
The invention belongs to leather processing fields, and in particular to a kind of sturgeon leather degreasing method.
Background technique
Sturgeon is the rare ancient times fish stayed in 100,005,000 Wan Nianqian Mesozoic Era, and body surface is covered with five-element's stringer arrangement
Bone plate, it is the quality material of production high leather, but due among the binding site of sturgeon bone plate and fish-skin that decorative pattern is three-dimensional unique
There is adipose tissue abundant, in sturgeon leather tannery, common defatting technology is difficult to purify in fat therein, sternly
Ghost image rings the quality of sturgeon leather, limits the development and application of sturgeon leather.
From the point of view of the academic paper or patent delivered, the degreasing method used, by our demonstration repeatedly,
The grease in sturgeon leather cannot be purified well, be mainly manifested in sturgeon back bone plate with leather and linked position, sturgeon abdomen
Bone plate and leather link the positions such as position, pectoral fin, abdomeinal fin, dorsal fin grease take off it is not clean, if degreasing is not clean, in later period tannery
It will cause that leather is stiff, the material of the filling is filled out to enter, uneven dyeing, and material filling is irregular, and leather potential difference is obvious, thickness
It is inconsistent, seriously affect the quality of sturgeon leather.
Summary of the invention
The object of the present invention is to provide a kind of sturgeon leather degreasing methods, and method is simple, successfully solves sturgeon skin
The technical problem that degreasing is not clean in tannery to be removed from office, the tanning quality of sturgeon leather is improved, leather is soft, and it is plentiful, it can meet
The tanning processing request of various style sturgeon leathers.
In order to achieve the above object, the present invention takes following technical measures:
1. a kind of sturgeon leather degreasing method, includes the following steps:
1) pre- degreasing
(1) 18-22 degree water temperature, sufficiently washing sturgeon skin, weigh after washing；
(2) weigh step (1) acquisition sturgeon skin weight 200--300% water, the immersion agent of 1%--1.5%,
0.5%--1% fungicide, 1%--1.5% degreasing agent
(3) step 1) (2) weighed raw material is mixed with sturgeon skin, is kept for 20-22 degrees Celsius of water temperature, rotary drum turns 10-20
Minute, stop 40-50 minutes, 3--5 revs/min, setting time 36h；
2) mechanical degreasing
Upward by the sturgeon skin flesh noodles after immersion, it is fixed on panel, scissors removes fin, wire brush or nylon bruss removal
The flesh of fish, fat；
3) liming degreasing
(1) the sturgeon skin weighing obtained after the mechanical degreasing of step 2)；
(2) weigh sturgeon skin weight in step 3) (1) 1.5-3% vulcanized sodium (vulcanized sodium be vulcanized sodium particle,
Effective content is 50-60%), 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, vulcanized sodium is added, degreasing agent turns
50-70 minutes, 3-5 revs/min；Lime, auxiliary liming agent are added, turns to stop within 5-15 minutes 40-60 minutes, 2-4 revs/min of rotary drum
Clock, this Step Time amount to 28-44h；After completing this step, uniformly, skin body is strong, sturgeon skin ph > 12 for sturgeon skin expansion.
(4) wash: 18-22 degree water temperature sufficiently washes sturgeon skin；
(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%, 100- are weighed
150% water；
(3) water temperature is mixed up, sturgeon skin is put into, sequentially adds ammonium sulfate, degreasing agent, maintain water temperature at 31-34 degrees Celsius, 3-
5 revs/min, turn 1.5-2.5h；Phenolphthalein indicator shows that notch 1/5--1/6 shows red heart, illustrates deliming in place；
(4) wash: 30-37 degrees Celsius is sufficiently washed sturgeon skin；
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, nonionic degreasing agent and salt is added, maintains water temperature at 21-23 degrees Celsius,
It 2--4 revs/min of rotary drum, rotates 5-15 minutes；The acetic acid after dilution is added from feed opening later, 1-3 revs/min, turns 25-40
Minute；The concentrated sulfuric acid after dilution is added from feed opening later, the concentrated sulfuric acid average mark 4-6 times addition after dilution turns 25-35 every time
Minute, 1-3 revs/min of revolving speed, then stop to rouse standing, temperature control is at 21-23 degrees Celsius, and the time is from starting plus nonionic degreasing
Agent finishes to standing and amounts to 28-46h；After completing this step, surface is astringent, and skin body is flexible, consolidation, solution ph 2.0-3.0；
(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；
6) tanning degreasing
(1) it weighs through step 5) treated sturgeon skin, then puts into pickling liquid again；
(2) modified glutaraldehyde of the 2-3% of the sturgeon skin weight of step 6) (1), aluminium tanningagent, the 8- of 1-1.5% are weighed
10% white tannin, 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%；
(3) tanning
It is carried out in former pickling liquid, maintains water temperature at 22-26 degrees Celsius, the modified glutaraldehyde after dilution is added, 2-3 turns/
Minute rotation 1-2h；Aluminium tanningagent is added, 2-3 revs/min, turns 1-2h；White tannin and white tannin extract is added, 3-4 revs/min, turns
3-5h；Stop rousing, stands 8-24h；After standing, continuously adds formic acid and receive and mould inhibitor, 2-3 revs/min, turn 1-2h；It is added later
Sodium bicarbonate after dilution, sodium bicarbonate are equally divided into 5-8 addition, turn every time 30-60 minutes, 2-3 revs/min；Solution ph detection
When being 4.0, continue to turn 1.5-2.5h, 2-3 revs/min；Water temperature is risen to 38-42 degrees Celsius later, water temperature is kept, turns 1.5-
2.5h, 2-3 rev/min；Boiling water detects 80 degrees Celsius of sturgeon leather shrinking temperature or more, stops drum and stands 8-24h, room temperature flowing water turns
Go out to rouse after cleaning 15-40 minutes in drum；
(4) degreasing
Through step 6) (3) 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 58-65 Celsius
Degree, rotates 4-8 hours by 3-5 revs/min；Sturgeon skin is taken out, room temperature flowing water cleans 15-40 minutes.
Compared with prior art, the invention has the following advantages that
1, the sturgeon skin revolutionary cadre after degreasing is net, clean and tidy, is suitble to the coloration requirements of various colors sturgeon leather, and full color is gorgeous
It is beautiful；
2, using completely new technique, it is easy to marketing
3, very different degreasing agent and degreasing method is selected to carry out different lubricant components in different tanning processes
Degreasing respectively.
Detailed description of the invention
Fig. 1 be degreasing completely with the sordid sturgeon leather schematic diagram of degreasing；
Wherein, a is to utilize the clean sturgeon scytoblastema of method degreasing of the invention；
B is degreasing method treated the sturgeon scytoblastema using the prior art.
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 sturgeon leather degreasing method, includes the following steps, following percentage refers to mass percent:
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 sturgeon skin weight involved in each step.Used in the present embodiment
Sturgeon skin is mandarin sturgeon (A.sinensis).
1) pre- degreasing
In immersion workshop section, pre- degreasing is carried out to sturgeon skin, mainly removal surface grease, prepared for liming workshop section
(1) 18-22 degree water temperature, clear water big yield sufficiently washes sturgeon skin 2 times in rotary drum, and 15 minutes every time, 2 revs/min,
It weighs after washing；
(2) weigh step (1) acquisition sturgeon skin weight 200% water, sturgeon skin weight 1% immersion agent (bar
This husband EusaponW), 1% fungicide (bright Sheng CISMOLLAN AN 90) of sturgeon skin weight, 1% degreasing of sturgeon skin weight
Agent (fraternal chemical industry H900)
(3) step 1) (2) weighed raw material is mixed with sturgeon skin, is kept for 20-22 degrees Celsius of water temperature, rotary drum turns 15 points
Clock stops 45 minutes, and 5 revs/min, the start of calculation that feeds intake certainly is rotated to rotary drum terminates 36h.
2) mechanical degreasing
Upward by the sturgeon skin flesh noodles after immersion, it is fixed on panel, scissors removes fin, electronic 80 mesh wire brush or 80
Mesh nylon bruss high speed rotation removes the flesh of fish, fat.
3) liming degreasing
(1) the sturgeon skin weighing obtained after the mechanical degreasing of step 2)；
(2) weigh sturgeon skin weight in step 3) (1) 2.5% vulcanized sodium (vulcanized sodium be sheet-like particle, effectively contain
Amount is 60%) 10% lime of sturgeon skin weight, 1% auxiliary liming agent (the bright Sheng CISMOLLAN BH- of sturgeon skin weight
C), 1% degreasing agent (BASF OC) of sturgeon skin weight, 300% water of sturgeon skin weight；
(3) by water and sturgeon skin investment rotary drum, water temperature is adjusted at 22-24 degrees Celsius, vulcanized sodium is added, degreasing agent turns 60
Minute, 5 revs/min；Lime, auxiliary liming agent are added, turns to stop 50 minutes for 10 minutes, 2 revs/min of rotary drum, the time amounts to 36h
(start of calculation to the rotary drum rotation that feeds intake certainly terminates)；After completing this step, uniformly, skin body is strong, sturgeon skin ph > 12 for sturgeon skin expansion.
(4) wash: 18-22 degree water temperature is washed 2 times 10 minutes every time, and 2 revs/min of rotary drum, water is abundant, and water is sturgeon
5 times or more of cortex amount.
(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 of sturgeon skin weight (bar
Si Fu), 100% water of sturgeon skin weight；
(3) water temperature is mixed up at 31-34 degrees Celsius, is put into sturgeon skin, is sequentially added ammonium sulfate, degreasing agent, maintain water temperature at
31-34 degrees Celsius, 5 revs/min, turn 2h；Phenolphthalein indicator shows that notch 1/5--1/6 shows red heart, illustrates deliming in place；
(4) it washes: warm water (30-37 degrees Celsius), 2 revs/min of rotary drum, 10 minutes every time, sufficiently cleaning sturgeon skin 2 times,
Water is 5 times of sturgeon skin quality or more；After cleaning, fish-skin surface neat and tidy is soft, and surface solid grease is gone substantially
Except clean.
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 of sturgeon skin weight, sturgeon tare weight are weighed
1% acetic acid of amount, 2% concentrated sulfuric acid of sturgeon skin weight, 2% nonionic degreasing agent (BASF of sturgeon skin weight
Eusapon OE)；
(3) water temperature is mixed up at 21-23 degrees Celsius, puts into sturgeon skin, and nonionic degreasing agent and salt is added, maintains water temperature at
It 21-23 degrees Celsius, 2 revs/min of rotary drum, rotates 10 minutes；(acetic acid presses the water of its 10 times of weight to acetic acid after dilution is added later
Dilution), 1 rev/min, turn 30 minutes；The concentrated sulfuric acid (diluting by the water of 10 times of weight) after dilution is added later is dense after dilution
Sulfuric acid is average to be added in four times, is turned 30 minutes every time, 1 rev/min of revolving speed, is then stopped to rouse standing, the control of whole process temperature exists
21-23 degrees Celsius, since the time finish to standing feeding intake and amount to 36h；After completing this step, surface is astringent, and skin body is flexible, tightly
It is real, solution ph 2.0-3.0；
(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.
6) tanning degreasing
Due to the particularity of sturgeon leather, it is different from common leather, grease is difficult once to purify, so this step is closed very much
Key is done well, and the quality of end product is seriously affected.
(1) it weighs, then is put into pickling liquid through step 5) treated sturgeon skin；
(2) 2% modified glutaraldehyde of step 6) (1) sturgeon skin weight is weighed, 1% aluminium tanningagent of sturgeon skin weight,
The white tannin of the 10% of sturgeon skin weight, 10% white tannin extract of sturgeon skin weight, sturgeon skin weight 1% formic acid receive, sturgeon
1% mould inhibitor (fraternal chemical industry) of 2% sodium bicarbonate of fish-skin weight, sturgeon skin weight；
(3) tanning
Tanning carries out in former pickling liquid, maintains water temperature at 24 degrees Celsius, modified glutaraldehyde after dilution is added (5 times its
The water of weight dilutes) 2 revs/min of rotation 1h；Aluminium tanningagent is added, 2 revs/min, turns 1h；It is added white tannin and white tannin extract, 3
Rev/min, turn 4h；Stop rousing, stands 12h；After standing, continuously adds formic acid and receive and mould inhibitor, 2 revs/min, turn 1h；Later plus
The sodium bicarbonate water of its weight (20 times dilution) after entering dilution, sodium bicarbonate are equally divided into 8 additions, turn 40 minutes every time, 2 turns/
Minute；When solution ph is detected as 4.0, continue to turn 2h, 2 revs/min；Water temperature is risen to 40 degrees Celsius later, keeps water temperature, is turned
2h, 2 revs/min；Boiling water detects 80 degrees Celsius of sturgeon leather shrinking temperature or more, stops drum and stands 12h；It is clear in room temperature flowing water rotary drum
It washes and goes out to rouse after twenty minutes.
(4) degreasing
Through step 6) (3) treated sturgeon skin weighing；300% water of sturgeon skin weight is weighed, sturgeon skin weight
3% high temperature resistant nonionic degreasing agent (BASF Eusapon OC, fraternal chemical industry H901,1:1 mass ratio mixing)；By sturgeon
Skin, water and high temperature resistant nonionic degreasing agent are put into rotary drum, are kept for 60 degrees Celsius of water temperature, 5 revs/min, rotated 6 hours；It takes out
Sturgeon skin, room temperature flowing water clean 20 minutes.
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
To feel, the natural oil in sturgeon leather removes completely substantially, and skin is strong, and without rotten skin, surface cleaning is conducive to subsequent dyeing,
Grease addition, can carry out the processing and fabricating of different-style sturgeon leather, such as sturgeon skin luggage leather, sturgeon leather shoe surface as desired
Leather, sturgeon skin belt leather etc., in addition to leather smells, no other are pungent taste.And b institute in sturgeon leather Fig. 1 of prior art tanning
Show, degreasing is not clean, and fiber cannot fully open, and will cause subsequent uneven dyeing, leather softness is inconsistent at spending, and position difference is bright
It is aobvious, seriously affect the quality of sturgeon leather.
Embodiment 2:
The detection of sturgeon leather indices:
Sturgeon leather after degreasing made from embodiment 1 is sent to SGS mechanism to detect, detection is based on Europe chemistry
The high concern substance candidate list for authorization review that the administration's cut-off of quality control reason is announced on December 17th, 2015 is (according to European Union the
No. 1907/2006 REACH regulation), screening test is carried out to 168 kinds high concern substance (SVHC), while examining to lead content
It surveys, 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
0.1%
The testing result of lead is as follows:
Remarks:
(1) 1mg/kg=0.0001%
(2) MDL=method detection limit
(3) (< MDL) is not detected in ND=
(4) "-"=do not provide
Lead (Pb)
Test method: it measures referring to US EPA method 3052:1996, is analyzed using ICP-OES
Later, inventor repeats to be made several sturgeon leathers using method provided by the invention, unleaded detection, simultaneously
The high concern material concentration tested in sample is both less than 0.05%.
Claims (2)
1. a kind of sturgeon leather degreasing method, includes the following steps:
1) pre- degreasing
(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) step 1) (2) weighed raw material being mixed with sturgeon skin, is kept for 20-22 degrees Celsius of water temperature, rotary drum turns 10-20 minutes,
Stop 40-50 minutes, 3--5 revs/min, setting time 36h；
2) mechanical degreasing
Upward by the sturgeon skin flesh noodles after immersion, it is fixed on panel, scissors removes fin, and wire brush or nylon bruss remove fish
Meat, fat；
3) liming degreasing
(1) the sturgeon skin weighing obtained after step 2 machinery degreasing；
(2) weigh sturgeon skin weight in step 3) (1) 1.5-3% vulcanized sodium (vulcanized sodium be vulcanized sodium particle, effectively
Content is 50-60%), 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, vulcanized sodium is added, degreasing agent turns 50-70
Minute, 3-5 revs/min；Lime, auxiliary liming agent are added, turns to stop within 5-15 minutes 40-60 minutes, 2-4 revs/min of rotary drum, this is walked
The rapid time amounts to 28-44h；After completing this step, uniformly, skin body is strong, sturgeon skin ph > 12 for sturgeon skin expansion.
2.(4) wash: 18-22 degree water temperature sufficiently washes sturgeon skin；
(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) is weighed, the degreasing agent of 1.5-2%, 100-150%'s
Water；
(3) it mixing up water temperature, puts into sturgeon skin, sequentially add ammonium sulfate, degreasing agent, maintain water temperature at 31-34 degrees Celsius, 3-5 turns/
Minute, turn 1.5-2.5h；Phenolphthalein indicator shows that notch 1/5--1/6 shows red heart, illustrates deliming in place；
(4) wash: 30-37 degrees Celsius is sufficiently washed sturgeon skin；
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) it mixing up water temperature, puts into sturgeon skin, nonionic degreasing agent is added, maintain water temperature at 21-23 degrees Celsius, rotary drum 2--4 turns/
Minute, it rotates 5-15 minutes；The acetic acid after dilution is added from feed opening later, 1-3 revs/min, turns 25-40 minutes；Later from
The concentrated sulfuric acid after dilution is added, the concentrated sulfuric acid average mark 4-6 times addition after dilution, turns 25-35 minutes, 1-3 revs/min of revolving speed every time
Then clock stops to rouse standing, temperature control is at 21-23 degrees Celsius, and the time is from starting plus nonionic degreasing agent to standing finishes total
28-46h；After completing this step, surface is astringent, and skin body is flexible, consolidation, solution ph 2.0-3.0；
(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；
6) tanning degreasing
(1) it weighs through step 5) treated sturgeon skin, then puts into pickling liquid again；
(2) weigh the modified glutaraldehyde of the 2-3% of the sturgeon skin weight of step 6) (1), the aluminium tanningagent of 1-1.5%, 8-10% it is white
Tannin, the white tannin extract of 8-10%, 1-1.5% formic acid receive, the mould inhibitor of the sodium bicarbonate of 2-2.5%, 1-1.5%；
(3) tanning
It is carried out in former pickling liquid, maintains water temperature at 22-26 degrees Celsius, the modified glutaraldehyde after dilution is added, 2-3 revs/min
Rotate 1-2h；Aluminium tanningagent is added, 2-3 revs/min, turns 1-2h；White tannin and white tannin extract is added, 3-4 revs/min, turns 3-5h；
Stop rousing, stands 8-24h；After standing, continuously adds formic acid and receive and mould inhibitor, 2-3 revs/min, turn 1-2h；After dilution is added later
Sodium bicarbonate, sodium bicarbonate be equally divided into 5-8 times addition, turn every time 30-60 minutes, 2-3 revs/min；Solution ph is detected as 4.0
When, continue to turn 1.5-2.5h；Water temperature is risen to 38-42 degrees Celsius later, water temperature is kept, turns 1.5-2.5h；Boiling water detects sturgeon
80 degrees Celsius of leather shrinking temperature or more, stops drum and stand 8-24h, go out to rouse after cleaning 15-40 minutes in room temperature flowing water rotary drum；
(4) degreasing
Through step 6) (3) treated sturgeon skin weighing；Weigh the water of the 200-300% of sturgeon skin weight, the high temperature resistant of 3-4%
Nonionic degreasing agent；By sturgeon skin, in water and high temperature resistant nonionic degreasing agent investment rotary drum, kept for 58-65 degrees Celsius of water temperature, 3-
It 5 revs/min, rotates 4-8 hours；Sturgeon skin is taken out, room temperature flowing water cleans 15-40 minutes.
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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 |
| CN102199675A (en) * | 2011-04-12 | 2011-09-28 | 王学川 | Clean process for producing leather by using sturgeon skin |
| CN102796832A (en) * | 2012-08-30 | 2012-11-28 | 陕西科技大学 | Production process for leather for painting |
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| 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 |
| CN102199675A (en) * | 2011-04-12 | 2011-09-28 | 王学川 | Clean process for producing leather by using sturgeon skin |
| CN102796832A (en) * | 2012-08-30 | 2012-11-28 | 陕西科技大学 | Production process for leather for painting |
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