CN108998592A - Coloured sheepskin bleaching process - Google Patents
Coloured sheepskin bleaching process Download PDFInfo
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- CN108998592A CN108998592A CN201810820458.XA CN201810820458A CN108998592A CN 108998592 A CN108998592 A CN 108998592A CN 201810820458 A CN201810820458 A CN 201810820458A CN 108998592 A CN108998592 A CN 108998592A
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- sheepskin
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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
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
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Abstract
Tibet lamp is one of local and special products commodity of China's conventional outlet, it is solid with dermatotome, and light warming , Mao Hui is smooth beautiful, and undulations are bent and have won fame both at home and abroad, and is that the advantageous herding in Ningxia, China produces resource.It but is brown or other coloured sheepskins there are also the sheep known for its fine thick wool sheepskin of kind, or be the ninsolid color sheepskin of white and brown and black doping, its use value of the Color influences of sheepskin.Coloured sheepskin bleaching process of the invention, by carrying out the processes such as ungrease treatment, pretreatment, oxygen bleaching processing, deferrization processing, reduction treatment and retanning processing to coloured sheepskin, by the Natural color processing of coloured sheepskin for white and close to white, the use value of coloured sheepskin is improved.This method simple process, difficulty of processing are small, the Harmful Residue is less, and the hair color after processing is vivid, pure, to the damaging small of sheepskin, retain itself good quality of sheepskin, product is more soft beautiful, can be obviously improved feel, the durability of sheepskin finished product.
Description
Technical field
The invention belongs to fur processing technique field, in particular to a kind of coloured sheepskin bleaching process.
Background technique
Tibet lamp is one of local and special products commodity of China's conventional outlet, it is solid with dermatotome, the light smooth beauty of warming , Mao Hui
It sees, undulations are bent and have won fame both at home and abroad, and are that the advantageous herding in Ningxia, China produces resource.But there are also kinds
Sheep known for its fine thick wool sheepskin is brown or other coloured sheepskins, or is white and brown and the ninsolid color sheepskin of black doping, the face of sheepskin
Color affects its use value.Therefore, it is necessary to a kind of coloured sheepskin bleaching process, are white by the Natural color processing of coloured sheepskin
With close to white, the use value of coloured sheepskin is improved.
Summary of the invention
The present invention in order to overcome above-mentioned disadvantage of the existing technology to propose, it is solved the technical issues of be to provide one
The coloured sheepskin bleaching process of kind prepares white sheepskin using coloured sheepskin, promotes the application value of coloured sheepskin.
For this purpose, the present invention provides a kind of coloured sheepskin bleaching process, comprising the following steps:
Step 1. prepares degreasing mixed liquor, and temperature controls at 38-42 DEG C, sheepskin is placed in degreasing mixed liquor and carries out degreasing
Handle 60min；
Step 2. prepares Pretreatment Mixed Liauid, and Pretreatment Mixed Liauid includes following components: salt 35-45g/L, bleaching agent F-
IN 1-3g/L, sodium hydrosulfite 0.2-0.5g/L, ammonium chloride 1-3g/L, glacial acetic acid 1-3mL/L, ferrous sulfate 10-20g/L, pretreatment
Mixeding liquid temperature is controlled at 32-35 DEG C, pH value 4.3-4.5, and the resulting sheepskin of step 1 is placed in mistake in Pretreatment Mixed Liauid
At night, every 30min carries out one-time mechanical rotation in treatment process, and each rotation time is 5min, in secondary sunrise skin and dries；
Step 3. prepares oxygen bleaching mixed liquor, and oxygen bleaching mixed liquor includes following components: salt 40-60g/L, protects hair agent MF-33-
7g/L, floats toner H-1510-20g/L, and temperature controls at 28-32 DEG C, pH value 7.0-7.5, the resulting sheepskin of step 2 is placed in
In oxygen bleaching mixed liquor, every 10min carries out one-time mechanical rotation, and each rotation time is that 5min is stirred after handling 30min in rotation
The dioxygen water process 1h that 20-25g/L is added under state is mixed, adds the dioxygen water process 6h of 10-15g/L, it is every in treatment process
30min carries out one-time mechanical rotation, and each rotation time is 5min, then carries out seeing color, goes out skin after standard to be achieved, salt is washed；
Step 4. prepares deferrization mixed liquor, and deferrization mixed liquor includes following components: salt 40-60g/L, oxalic acid 3-5g/L,
Temperature is controlled at 35-38 DEG C, pH value 3-4, and the resulting sheepskin of step 3 is placed in deferrization mixed liquor and is handled, in treatment process
Every 30min carries out one-time mechanical rotation, and each rotation time is 5min, after handling 2h, skin and dries out；
Step 5. prepares reduction mixed liquor, and reduction mixed liquor includes following components: salt 40-60g/L, protects hair agent MF-32-
5g/L, bleaching agent F-IN 2-5g/L, bleaching agent F-AR 1-3g/L, temperature are controlled at 35-38 DEG C, and pH value 7.0-7.5 will be walked
Rapid 4 resulting sheepskin is placed in reduction mixed liquor overnight, and every 30min carries out one-time mechanical rotation in treatment process, is rotated every time
Time is 5min, is added 0.5-0.7g/L formic acid under mechanical rotary state in next day, after handling 1h, skin and is dried out；
Step 6. prepares retanning mixed liquor, and retanning mixed liquor includes following components: salt 25-35g/L, fatting agent RAM-II
3-5g/L, ammonia-alum 10-20g/L, temperature control at 35-38 DEG C, pH value 3-4, the resulting sheepskin of step 5 are placed in retanning and is mixed
Close in liquid, every 30min carries out one-time mechanical rotation, and each rotation time is 5min, after handling 4h, out skin, drying, added again
Rouge processing.
Preferably, degreasing mixed liquor includes following components: the degreasing agent of 3g/L and the fat dissolving agent of 1g/L in step 1,
Temperature is controlled at 40 DEG C, is rotated once in ungrease treatment at interval of 10min, is rotated 10min every time.
Preferably, Pretreatment Mixed Liauid includes following components: salt 40g/L, bleaching agent F-IN 1g/L, insurance in step 2
Powder 0.3g/L, ammonium chloride 2g/L, glacial acetic acid 1mL/L, ferrous sulfate 15g/L, the control of Pretreatment Mixed Liauid temperature is at 34 DEG C, pH value
It is 4.4.
Preferably, oxygen bleaching mixed liquor includes following components: salt 50g/L in step 3, protects hair agent MF-35g/L, floats toner
H-1515g/L, temperature control is at 30 DEG C, pH value 7.2, and the hydrogen peroxide of 25g/L and 15g/L are successively added in treatment process.
Preferably, deferrization mixed liquor includes following components: salt 50g/L, oxalic acid 4g/L in step 4, and temperature is controlled 36
DEG C, pH value 3.6.
Preferably, it includes following components: salt 50g/L that mixed liquor is restored in step 5, protects hair agent MF-33g/L, bleaching agent
F-IN 3g/L, bleaching agent F-AR 2g/L, formic acid 0.6g/L, temperature control is at 36 DEG C, pH value 7.2.
Preferably, retanning mixed liquor includes following components in step 6: salt 30g/L, fatting agent RAM-II4g/L, ammonium are bright
Alum 15g/L, temperature control is at 36 DEG C, pH value 3.6.
Preferably, salt dilution is sodium chloride solution that concentration is 50g/L in step 3, and temperature is 35 DEG C.
Preferably, 10 sheepskins of every processing take 260L water to prepare degreasing mixed liquor, pretreatment respectively in step 1 to step 6
Mixed liquor, oxygen bleaching mixed liquor, deferrization mixed liquor, reduction mixed liquor and retanning mixed liquor.
This method can also be used to process the coloured sheepskins such as raw fox skin, fur, sheepskin, ox-hide, rabbit, recoon dog skin.
Coloured sheepskin bleaching process of the invention is the Natural color processing by coloured sheepskin for white and close to white, is mentioned
The use value of high coloured sheepskin.This method simple process, difficulty of processing are small, the Harmful Residue is less, and the hair color after processing is fresh
It is bright, pure, to the damaging small of sheepskin, retain itself good quality of sheepskin, product is more soft beautiful, can be obviously improved
Feel, the durability of sheepskin finished product.
Specific embodiment
It is as follows for the specific embodiment of coloured sheepskin bleaching process and preparation process of the invention:
A kind of embodiment 1: coloured sheepskin bleaching process, comprising the following steps:
Step 1. prepares degreasing mixed liquor, and degreasing mixed liquor includes following components: the degreasing agent of 3g/L and the fat of 1g/L
Lytic agent, temperature controls at 40 DEG C, sheepskin is placed in degreasing mixed liquor and carries out ungrease treatment 60min, every in ungrease treatment
It is primary every 10min rotation, 10min is rotated every time；
Step 2. prepares Pretreatment Mixed Liauid, and Pretreatment Mixed Liauid includes following components: salt 40g/L, bleaching agent F-IN
1g/L, sodium hydrosulfite 0.3g/L, ammonium chloride 2g/L, glacial acetic acid 1mL/L, ferrous sulfate 15g/L, the control of Pretreatment Mixed Liauid temperature exist
34 DEG C, the resulting sheepskin of step 1 is placed in Pretreatment Mixed Liauid overnight by pH value 4.4, and every 30min is carried out in treatment process
One-time mechanical rotation, each rotation time are 5min, in secondary sunrise skin and are dried；
Step 3. prepares oxygen bleaching mixed liquor, and oxygen bleaching mixed liquor includes following components: salt 50g/L, protects hair agent MF-35g/L,
Toner H-1515g/L is floated, temperature is controlled at 30 DEG C, and the resulting sheepskin of step 2 is placed in oxygen bleaching mixed liquor, often by pH value 7.2
10min carries out one-time mechanical rotation, and each rotation time is that 25g/ is added in the case where rotating stirring after handling 30min in 5min
The dioxygen water process 1h of L adds the dioxygen water process 6h of 15g/L, and every 30min carries out one-time mechanical rotation in treatment process,
Each rotation time is 5min, then carries out seeing color, goes out skin after standard to be achieved, salt is washed, and salt dilution is that concentration is 50g/L's
Sodium chloride solution, temperature are 35 DEG C；
Step 4. prepares deferrization mixed liquor, and deferrization mixed liquor includes following components: salt 50g/L, oxalic acid 4g/L, temperature control
System at 36 DEG C, the resulting sheepskin of step 3 is placed in deferrization mixed liquor and handles by pH value 3.6, in treatment process every 30min into
The rotation of row one-time mechanical, each rotation time is 5min, after handling 2h, skin and is dried out；
Step 5. prepares reduction mixed liquor, and reduction mixed liquor includes following components: salt 50g/L, protects hair agent MF-33g/L,
Bleaching agent F-IN 3g/L, bleaching agent F-AR 2g/L, formic acid 0.6g/L, temperature control is at 36 DEG C, pH value 7.2, by step 4 institute
The sheepskin obtained is placed in reduction mixed liquor overnight, and every 30min carries out one-time mechanical rotation in treatment process, and each rotation time is
5min, is added 0.5-0.7g/L formic acid in next day under mechanical rotary state, after handling 1h, skin and dries out；
Step 6. prepares retanning mixed liquor, and retanning mixed liquor includes following components: salt 30g/L, fatting agent RAM-II
4g/L, ammonia-alum 15g/L, temperature are controlled at 36 DEG C, and the resulting sheepskin of step 5 is placed in retanning mixed liquor by pH value 3.6,
Every 30min carries out one-time mechanical rotation, and each rotation time is 5min, after handling 4h, out skin, drying, carry out stuffing processing again.
In step 1 to step 6 10 sheepskins of every processing take respectively 260L water prepare degreasing mixed liquor, Pretreatment Mixed Liauid,
Oxygen bleaching mixed liquor, deferrization mixed liquor, reduction mixed liquor and retanning mixed liquor.
A kind of embodiment 2: coloured sheepskin bleaching process, comprising the following steps:
Step 1. prepares degreasing mixed liquor, and degreasing mixed liquor includes following components: the degreasing agent of 3g/L and the fat of 1g/L
Lytic agent, temperature controls at 38 DEG C, sheepskin is placed in degreasing mixed liquor and carries out ungrease treatment 60min, every in ungrease treatment
It is primary every 10min rotation, 10min is rotated every time；
Step 2. prepares Pretreatment Mixed Liauid, and Pretreatment Mixed Liauid includes following components: salt 35g/L, bleaching agent F-IN
1g/L, sodium hydrosulfite 0.5g/L, ammonium chloride 3g/L, glacial acetic acid 1mL/L, ferrous sulfate 10g/L, the control of Pretreatment Mixed Liauid temperature exist
32 DEG C, the resulting sheepskin of step 1 is placed in Pretreatment Mixed Liauid overnight by pH value 4.3, and every 30min is carried out in treatment process
One-time mechanical rotation, each rotation time are 5min, in secondary sunrise skin and are dried；
Step 3. prepares oxygen bleaching mixed liquor, and oxygen bleaching mixed liquor includes following components: salt 40g/L, protects hair agent MF-37g/L,
Toner H-1510g/L is floated, temperature is controlled at 32 DEG C, and the resulting sheepskin of step 2 is placed in oxygen bleaching mixed liquor, often by pH value 7.5
10min carries out one-time mechanical rotation, and each rotation time is that 25g/ is added in the case where rotating stirring after handling 30min in 5min
The dioxygen water process 1h of L adds the dioxygen water process 6h of 10g/L, and every 30min carries out one-time mechanical rotation in treatment process,
Each rotation time is 5min, then carries out seeing color, goes out skin after standard to be achieved, salt is washed, and salt dilution is that concentration is 50g/L's
Sodium chloride solution, temperature are 35 DEG C；
Step 4. prepares deferrization mixed liquor, and deferrization mixed liquor includes following components: salt 60g/L, oxalic acid 5g/L, temperature control
System at 35-38 DEG C, the resulting sheepskin of step 3 is placed in deferrization mixed liquor and handles by pH value 3, in treatment process every 30min into
The rotation of row one-time mechanical, each rotation time is 5min, after handling 2h, skin and is dried out；
Step 5. prepares reduction mixed liquor, and reduction mixed liquor includes following components: salt 40-60g/L, protects hair agent MF-
32g/L, bleaching agent F-IN 5g/L, bleaching agent F-AR 1g/L, at 35-38 DEG C, pH value 7.5 will be obtained by step 4 for temperature control
Sheepskin be placed in reduction mixed liquor overnight, every 30min carries out one-time mechanical rotation in treatment process, and each rotation time is
5min, is added 0.7g/L formic acid in next day under mechanical rotary state, after handling 1h, skin and dries out；
Step 6. prepares retanning mixed liquor, and retanning mixed liquor includes following components: salt 35g/L, fatting agent RAM-II
5g/L, ammonia-alum 10g/L, temperature are controlled at 35 DEG C, and the resulting sheepskin of step 5 is placed in retanning mixed liquor, often by pH value 3
30min carry out one-time mechanical rotation, each rotation time be 5min, handle 4h after, out skin, drying, carry out stuffing processing again.
In step 1 to step 6 10 sheepskins of every processing take respectively 260L water prepare degreasing mixed liquor, Pretreatment Mixed Liauid,
Oxygen bleaching mixed liquor, deferrization mixed liquor, reduction mixed liquor and retanning mixed liquor.
A kind of embodiment 3: coloured sheepskin bleaching process, comprising the following steps:
Step 1. prepares degreasing mixed liquor, and degreasing mixed liquor includes following components: the degreasing agent of 3g/L and the fat of 1g/L
Lytic agent, temperature controls at 42 DEG C, sheepskin is placed in degreasing mixed liquor and carries out ungrease treatment 60min, every in ungrease treatment
It is primary every 10min rotation, 10min is rotated every time；
Step 2. prepares Pretreatment Mixed Liauid, and Pretreatment Mixed Liauid includes following components: salt 45g/L, bleaching agent F-IN
3g/L, sodium hydrosulfite 0.2g/L, ammonium chloride 1g/L, glacial acetic acid 3mL/L, ferrous sulfate 20g/L, the control of Pretreatment Mixed Liauid temperature exist
35 DEG C, the resulting sheepskin of step 1 is placed in Pretreatment Mixed Liauid overnight by pH value 4.5, and every 30min is carried out in treatment process
One-time mechanical rotation, each rotation time are 5min, in secondary sunrise skin and are dried；
Step 3. prepares oxygen bleaching mixed liquor, and oxygen bleaching mixed liquor includes following components: salt 60g/L, protects hair agent MF-33g/L,
Toner H-1520g/L is floated, temperature is controlled at 28 DEG C, and the resulting sheepskin of step 2 is placed in oxygen bleaching mixed liquor, often by pH value 7.0
10min carries out one-time mechanical rotation, and each rotation time is that 20g/ is added in the case where rotating stirring after handling 30min in 5min
The dioxygen water process 1h of L adds the dioxygen water process 6h of 15g/L, and every 30min carries out one-time mechanical rotation in treatment process,
Each rotation time is 5min, then carries out seeing color, goes out skin after standard to be achieved, salt is washed, and salt dilution is that concentration is 50g/L's
Sodium chloride solution, temperature are 35 DEG C；
Step 4. prepares deferrization mixed liquor, and deferrization mixed liquor includes following components: salt 40g/L, oxalic acid 3g/L, temperature control
System at 38 DEG C, pH value 3-4, the resulting sheepskin of step 3 is placed in deferrization mixed liquor and is handled, in treatment process every 30min into
The rotation of row one-time mechanical, each rotation time is 5min, after handling 2h, skin and is dried out；
Step 5. prepares reduction mixed liquor, and reduction mixed liquor includes following components: salt 40g/L, protects hair agent MF-35g/L,
Bleaching agent F-IN 2g/L, bleaching agent F-AR 3g/L, temperature are controlled at 35 DEG C, and pH value 7.0 sets the resulting sheepskin of step 4
In reduction mixed liquor overnight, every 30min carries out one-time mechanical rotation in treatment process, and each rotation time is 5min, in secondary
0.5g/L formic acid is added day under mechanical rotary state, after handling 1h, skin and dries out；
Step 6. prepares retanning mixed liquor, and retanning mixed liquor includes following components: salt 25g/L, fatting agent RAM-II
3g/L, ammonia-alum 20g/L, temperature are controlled at 35-38 DEG C, and the resulting sheepskin of step 5 is placed in retanning mixed liquor by pH value 4,
Every 30min carries out one-time mechanical rotation, and each rotation time is 5min, after handling 4h, out skin, drying, carry out stuffing processing again.
In step 1 to step 6 10 sheepskins of every processing take respectively 260L water prepare degreasing mixed liquor, Pretreatment Mixed Liauid,
Oxygen bleaching mixed liquor, deferrization mixed liquor, reduction mixed liquor and retanning mixed liquor.
The testing result of the resulting sheepskin finished product of technique through the invention of table 1
By upper table 1 it is found that resulting tibet lamp product inspection is according to DB64T 687-2011 " two sheepskin system of Ningxia Tan Sheep
Product " and GB20400-2006 " leather and sheepskin limits of harmful substances " detected, every presentation quality and inherent quality detection
The measured value of project is qualification, has reached the requirement of country and local coherent detection standard.
Above-mentioned the embodiments of the present invention are described in detail, but present invention is not limited to the embodiments described above,
Those skilled in the art within the scope of knowledge, can also make many variations to it.
Claims (9)
1. a kind of coloured sheepskin bleaching process, which comprises the following steps:
Step 1. prepares degreasing mixed liquor, and temperature controls at 38-42 DEG C, sheepskin is placed in degreasing mixed liquor and carries out ungrease treatment
60min；
Step 2. prepares Pretreatment Mixed Liauid, and Pretreatment Mixed Liauid includes following components: salt 35-45g/L, bleaching agent F-IN
1-3g/L, sodium hydrosulfite 0.2-0.5g/L, ammonium chloride 1-3g/L, glacial acetic acid 1-3mL/L, ferrous sulfate 10-20g/L, pretreatment are mixed
The control of liquid temperature is closed at 32-35 DEG C, pH value 4.3-4.5, the resulting sheepskin of step 1 is placed in Pretreatment Mixed Liauid overnight,
Every 30min carries out one-time mechanical rotation in treatment process, and each rotation time is 5min, in secondary sunrise skin and dries；
Step 3. prepares oxygen bleaching mixed liquor, and oxygen bleaching mixed liquor includes following components: salt 40-60g/L, protects hair agent MF-3 3-7g/
L floats toner H-15 10-20g/L, and temperature is controlled at 28-32 DEG C, pH value 7.0-7.5, and the resulting sheepskin of step 2 is placed in oxygen
It floats in mixed liquor, every 10min carries out one-time mechanical rotation, and each rotation time is 5min, after handling 30min, stirs in rotation
The dioxygen water process 1h of 20-25g/L is added under state, adds the dioxygen water process 6h of 10-15g/L, it is every in treatment process
30min carries out one-time mechanical rotation, and each rotation time is 5min, then carries out seeing color, goes out skin after standard to be achieved, salt is washed；
Step 4. prepares deferrization mixed liquor, and deferrization mixed liquor includes following components: salt 40-60g/L, oxalic acid 3-5g/L, temperature
The resulting sheepskin of step 3 is placed in deferrization mixed liquor and handles at 35-38 DEG C, pH value 3-4 by control, every in treatment process
30min carries out one-time mechanical rotation, and each rotation time is 5min, after handling 2h, skin and dries out；
Step 5. prepares reduction mixed liquor, and reduction mixed liquor includes following components: salt 40-60g/L, protects hair agent MF-3 2-5g/
L, bleaching agent F-IN 2-5g/L, bleaching agent F-AR 1-3g/L, temperature are controlled at 35-38 DEG C, pH value 7.0-7.5, by step 4
Resulting sheepskin is placed in reduction mixed liquor overnight, and every 30min carries out one-time mechanical rotation, each rotation time in treatment process
For 5min, 0.5-0.7g/L formic acid is added under mechanical rotary state in next day, after handling 1h, skin and dries out；
Step 6. prepares retanning mixed liquor, and retanning mixed liquor includes following components: salt 25-35g/L, fatting agent RAM-II 3-
5g/L, ammonia-alum 10-20g/L, temperature control at 35-38 DEG C, pH value 3-4, the resulting sheepskin of step 5 are placed in retanning and is mixed
In liquid, every 30min carries out one-time mechanical rotation, and each rotation time is 5min, after handling 4h, out skin, drying, carry out stuffing again
Processing.
2. coloured sheepskin bleaching process according to claim 1, which is characterized in that in step 1 degreasing mixed liquor include with
Lower component: the degreasing agent of 3g/L and the fat dissolving agent of 1g/L, temperature control at 40 DEG C, turn in ungrease treatment at interval of 10min
It is dynamic primary, 10min is rotated every time.
3. coloured sheepskin bleaching process according to claim 1, which is characterized in that Pretreatment Mixed Liauid includes in step 2
Following components: salt 40g/L, bleaching agent F-IN 1g/L, sodium hydrosulfite 0.3g/L, ammonium chloride 2g/L, glacial acetic acid 1mL/L, sulfuric acid are sub-
Iron 15g/L, the control of Pretreatment Mixed Liauid temperature is at 34 DEG C, pH value 4.4.
4. coloured sheepskin bleaching process according to claim 1, which is characterized in that in step 3 oxygen bleaching mixed liquor include with
Lower component: salt 50g/L protects hair agent MF-35g/L, floats toner H-15 15g/L, and temperature control is located in 30 DEG C, pH value 7.2
The hydrogen peroxide of 25g/L and 15g/L is successively added during reason.
5. coloured sheepskin bleaching process according to claim 1, which is characterized in that in step 4 deferrization mixed liquor include with
Lower component: salt 50g/L, oxalic acid 4g/L, temperature control is at 36 DEG C, pH value 3.6.
6. coloured sheepskin bleaching process according to claim 1, which is characterized in that in step 5 restore mixed liquor include with
Lower component: salt 50g/L protects hair agent MF-3 3g/L, bleaching agent F-IN 3g/L, bleaching agent F-AR 2g/L, formic acid 0.6g/L,
Temperature control is at 36 DEG C, pH value 7.2.
7. coloured sheepskin bleaching process according to claim 1, which is characterized in that in step 6 retanning mixed liquor include with
Lower component: salt 30g/L, fatting agent RAM-II 4g/L, ammonia-alum 15g/L, temperature control is at 36 DEG C, pH value 3.6.
8. coloured sheepskin bleaching process according to claim 1, which is characterized in that salt dilution is that concentration is in step 3
The sodium chloride solution of 50g/L, temperature are 35 DEG C.
9. coloured sheepskin bleaching process according to claim 1, which is characterized in that every processing 10 in step 1 to step 6
Sheepskin takes 260L water to prepare degreasing mixed liquor, Pretreatment Mixed Liauid, oxygen bleaching mixed liquor, deferrization mixed liquor, reduction mixed liquor respectively
And retanning mixed liquor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609706A (en) * | 2018-12-21 | 2019-04-12 | 余姚市创丰毛皮制品有限公司 | A kind of method for bleaching of mink under hair |
| CN112709084A (en) * | 2020-12-29 | 2021-04-27 | 北京泛博清洁技术研究院有限公司 | Coffee mink printing, bleaching and dyeing process and application thereof |
| CN114541128A (en) * | 2021-12-15 | 2022-05-27 | 浙江中辉裘革科技有限公司 | Bleaching treatment process for sheep skin fur leather raw skin |
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Application publication date: 20181214 |