CN107287365A - The preparation technology of strong force of explosion double-layer leather - Google Patents
The preparation technology of strong force of explosion double-layer leather Download PDFInfo
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- CN107287365A CN107287365A CN201710639140.7A CN201710639140A CN107287365A CN 107287365 A CN107287365 A CN 107287365A CN 201710639140 A CN201710639140 A CN 201710639140A CN 107287365 A CN107287365 A CN 107287365A
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- rotary drum
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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
-
- 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
-
- 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
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
-
- 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
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/04—Fixing tanning agents in the leather
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- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a kind of preparation technology of strong force of explosion double-layer leather, belong to leather technology field.The preparation technology of the strong force of explosion double-layer leather of the present invention comprises the following steps：Primary water, secondary backwater, retanning and carry alkali, neutralization, dyeing and stuffing, fixation, wash, go out drum drying break soft, buffing and gently fall.In each step, the environmental protection reagent of independent research is added, by safely controllable preparation technology flow, the double-layer leather of strong force of explosion is made, its performance is stable, and resistance to tensile force performance is strong, and force of explosion is strong, surface fiber finer, and skin body is full velvet sense.
Description
Technical field
The invention belongs to leather technology field, and in particular to a kind of preparation technology of strong force of explosion double-layer leather.
Background technology
In some Code in Hazardous Special Locations, the material of property is generally required using the material Jing Guo specially treated or possessed in itself
Matter, for example, automobile cortex seat cushion and cortex binding material need to use the leather of high intensity, and common leather does not have height
Intensity, unlikely reach the performance of strong force of explosion.Leather on the market is generally used for belt, cortex sofa and automobile cortex
Seat cushion, but its performance is often extremely difficult to people's expected effect.
The Chinese invention patent of Application No. 201510641755.4, discloses a kind of resistance to special skin of the high-strength vehicle that bursts apart
The production method of leather, comprises the following steps：The cladding of softness is taken, primary coat is sequentially passed through, hangs at dry, polishing, hot light and color spray
Reason is produced.Wherein, priming step is dissolved in water roller coating using burned black wax, soft casein acrylic resin and handled；Polish step and use mill
Ray machine is polished；Hot light step uses cleaning mill hot light.It is well known that not merely only being limited the use of by leather made from this production method
In automobile, still, the handling process of its leather produced mainly with burned black wax and soft casein acrylic resin to cladding at
Reason, this processing mode can not make cladding possess the stable interior high-intensity performance that bursts apart, it is impossible to meet the reality of people in reality
With requiring.Thus, design a kind of raw material environmental protection and energy saving, the preparation of the strong strong force of explosion double-layer leather of preparation technology flow controllability
Technique, the performance of strong force of explosion double-layer leather is stable, and resistance to tensile force performance is strong, and force of explosion is strong, surface fiber finer, and skin body is full to be had
Velvet sense.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of raw material environmental protection and energy saving, preparation technology flow
The preparation technology of the strong strong force of explosion double-layer leather of controllability, the performance of strong force of explosion double-layer leather is stable, resistance to tensile force performance
By force, force of explosion is strong, surface fiber finer, and skin body is full velvet sense.
The present invention is adopted the following technical scheme that：
The preparation technology of strong force of explosion double-layer leather, comprises the following steps：
Step 1: primary water：
Double-layer leather cladding is placed in rotary drum and carries out primary water, primary water leather is obtained, wherein, primary water process
For：Successively primary water is carried out toward the following component added in rotary drum according to cladding weight meter：190~210% water, 0.4~
0.6% soda ash and 0.1~0.3% degreasing agent, wherein, primary water temperature is 45~50 DEG C, in 55~65min of primary water
Afterwards, discharge opeing is carried out to rotary drum, the progress that then adds water is washed and discharge opeing；
Step 2: secondary backwater：
Gained primary water leather in step one is subjected to secondary backwater, secondary backwater leather is obtained, wherein, secondary backwater mistake
Cheng Wei：Successively secondary backwater is carried out toward the following component added in rotary drum according to cladding weight meter：190~210% water, 0.4
~0.6% soda ash and 0.10~0.20% degreasing agent, wherein secondary return water temperature be 40~45 DEG C, secondary backwater 55~
After 65min, discharge opeing is carried out to rotary drum, the progress that then adds water is washed and discharge opeing；
Step 3: retanning and carrying alkali：
Retanning is carried out to the secondary backwater leather of gained in step 2 and alkali process is put forward, alkali leather must be carried, wherein, retanning process
In, first successively toward adding 90~110% water and 0.4~0.6% formic acid according to cladding weight meter in rotary drum, rotary drum 28~
PH is 2.8~3.2 after 32min, is subsequently added into 1.3~1.7%GM aldehyde tanning agents according to cladding weight meter, 28~32min of rotary drum
Afterwards, add after 2~4% chromium powders according to cladding weight meter, 68~72min of rotary drum, obtain retanned leather；
Then carry out putting forward alkali technique, wherein, during carrying alkali, successively toward add in rotary drum according to cladding weight meter 48~
PH is 3.0~3.2 after 52% water and 0.8~1.2% sodium formate, 28~32min of rotary drum, and then discharge opeing must carry alkali leather；
Step 4: neutralizing：
Alkali leather is carried to gained in step 3 and carries out neutralisation treatment, neutralization leather is obtained, wherein, in N-process, successively
145~155% water according to cladding weight meter, 1.8~2.2% sodium formates and 2~4% nertralizers, rotary drum are added in toward rotary drum
After 28~32min, 0.5~0.7% sodium bicarbonate and 0.4~0.6% dodium thiosulfate according to cladding weight meter, rotary drum 58 are sequentially added
PH is 4.8~5.2 after~62min, then adds 1.8~2.2% acrylic acid according to cladding weight meter, rotary drum 58~
Discharge opeing after 62min, and respectively washing and discharge opeing twice；
Step 5: dyeing and stuffing：
Leather will be neutralized obtained by step 4 to be dyed and stuffing processing, obtains colouring leather, wherein, in dyeing course,
Successively toward adding 48~52% water according to cladding weight meter, 1~3%RS-3 water soluble acrylic acids and 0.8~1.2% in rotary drum
After AC- sulfiting greases, 28~32min of rotary drum, sequentially add and replace filler XAR, 1 according to the 1~3% of cladding weight meter
~3%FRBC, 1~3%UR synthetic fillings and 0.7~1.3% dispersant, then add dyestuff and obtain dye liquor, dye liquor temperature is 45
~50 DEG C, stuffing processing is carried out after 18~22min of rotary drum, wherein, during stuffing, sequentially add according to cladding weight meter
2.5~3.5%AC- sulfitings grease, 1~2%707,0.5~1.5%EG60,0.5~1.5AK% and 0.08~0.12%
Carried out after mould inhibitor, 58~62min of rotary drum to color, then discharge opeing；
Step 6: fixation：
Fixation treatment is carried out to colouring leather obtained by step 5, fixation leather is obtained, wherein, during fixation treatment, successively
148~152% water and 1.8~2.2% formic acid according to cladding weight meter are added in toward rotary drum, wherein, formic acid is in adding procedure
In, formic acid is first divided equally into three parts, 8~12min of rotary drum after first part is added, second part of 8~12min of rotary drum is then added, most
The 3rd part and 18~22min of rotary drum is added afterwards；
Step 7: washing：
Fixation leather obtained by step 6 wash and discharge opeing, washing leather is obtained；
Step 8: going out bulging drying：
Gained washing leather in step 7 is removed into rotary drum, washing leather is moved into vacuum drier is dried, then
Move into drying baker and dry again, obtain drying leather, wherein, the temperature when vacuum drier is dried is 55~65 DEG C, vacuum
The humidity of drying machine is 40~45%, and the dry time is that drying temperature is 70~80 DEG C in 7~9min, the drying baker, is dried
The dry time is 8~9h, and the cladding humidity after drying is 9~11%；
Step 9: breaking soft, buffing and gently falling：
Gained drying leather in step 8 is carried out breaking soft, buffing and gently fallen, strong force of explosion leather is obtained, wherein, when gently falling
Between be 10~20min.
Further, described in step one during primary water, successively toward adding according to cladding weight meter in rotary drum
Component carries out primary water：200% water, 0.5% soda ash and 0.2% degreasing agent, wherein, primary water temperature is 45 DEG C,
After primary water 60min, discharge opeing is carried out to rotary drum, the progress that then adds water is washed and discharge opeing.
Further, described in step 2 during secondary backwater, successively toward adding according to cladding weight meter in rotary drum
Following component carries out secondary backwater：200% water, 0.5% soda ash and 0.15% degreasing agent, wherein secondary return water temperature is 45
DEG C, after secondary backwater 60min, discharge opeing is carried out to rotary drum, the progress that then adds water is washed and discharge opeing.
Further, described in step 3 during retanning, first successively toward adding according to cladding weight meter in rotary drum
PH is 3.0 after 100% water and 0.5% formic acid, rotary drum 30min, is subsequently added into the 1.5%GM aldehyde tannages according to cladding weight meter
After agent, rotary drum 30min, add after 3% chromium powder according to cladding weight meter, rotary drum 70min, obtain retanned leather；
Then carry out putting forward alkali technique, wherein, during carrying alkali, successively toward adding 50% according to cladding weight meter in rotary drum
Water and 1% sodium formate, pH is 3.1 after rotary drum 30min, and then discharge opeing must carry alkali leather.
Further, described in step 4 during N-process, successively toward adding 150% according to cladding weight meter in rotary drum
After water, 2% sodium formate and 3% nertralizer, rotary drum 30min, sequentially add according to cladding weight meter 0.6% sodium bicarbonate and
PH is 5.0 after 0.5% dodium thiosulfate, rotary drum 60min, then adds 2% acrylic acid according to cladding weight meter, rotary drum 60min
Discharge opeing afterwards, and wash respectively twice and discharge opeing twice.
Further, described in step 5 in dyeing processing procedure, successively toward adding according to cladding weight meter in rotary drum
50% water, 2%RS-3 water soluble acrylic acids and 1%AC- sulfiting greases after rotary drum 30min, are sequentially added according to cladding weight
2% displacement filler XAR, 2%FRBC, 2%UR synthetic filling of gauge and 1% dispersant, then add dyestuff and obtain dye liquor, contaminate
Liquid temperature degree is progress stuffing processing after 45 DEG C, rotary drum 20min, wherein, during stuffing, sequentially add according to cladding weight meter
Carried out after 3%AC- sulfitings grease, 1.5%707,1%EG60,1%AK and 0.1% mould inhibitor, rotary drum 60min to color, so
Discharge opeing afterwards.
Further, described in step 6 in laking process, successively toward adding 150% according to cladding weight meter in rotary drum
Water and 2% formic acid, wherein, formic acid is first divided into three parts by formic acid in adding procedure, adds rotary drum 10min after first part,
Then second part of rotary drum 10min is added, the 3rd part and rotary drum 20min is eventually adding.
Further, temperature when vacuum drier described in step 8 is dried is 60 DEG C, and the humidity of vacuum drier is
43%, the dry time is that drying temperature is 75 DEG C in 8min, the drying baker, and drying time is 8.5h, the cladding after drying
Humidity is 10%.
Further, it is light in the step 9 to fall the time for 15min.
The present invention compared with prior art, has the advantages that：
The preparation technology of the strong force of explosion double-layer leather of the present invention, by the backwater twice to cladding, and with the addition of soda ash
And degreasing agent, the impurity in cladding is effectively removed, it is good to the cleaning performance of cladding, it is logical during follow-up retanning and carrying alkali
Cross the flexibility that separate operations effectively strengthen leather so that surface is plentiful, strengthen surface fibre fineness, be that follow-up dyeing is carried out
Sufficiently prepare, allow dyestuff completely to enter leather fiber, and with the addition of various fillers, strengthen the force of explosion of cladding, lead to
Later continuous fixation treatment, water-washing process afterwards, effectively remove the impurity in laking process, then dried, make soft, mill
Remove from office and gently fall so that leather surface is smooth, increase flexibility, wherein, strong force of explosion double-layer leather of the invention is especially suitable for using
In on the outdoor product such as climbing boot, the service life of product is effectively improved.
Embodiment
Raw material used in the present invention is commercially available product, wherein：
OC is the You Sha nations OC that degreasing agent is purchased from BASF China；
GM aldehyde tanning agents are the sharp tan pellet GM purchased from BASF China；
Nertralizer is the tower nurse XNL liquid purchased from BASF China；
It is the Bath pellet XAR purchased from BASF China to replace filler XAR；
FR-BC is the Bath pellet FR-BC purchased from BASF China；
UR synthetic fillings are the Bath pellet UR purchased from BASF China；
Dispersant is the tower nurse M purchased from BASF China；
RS-3 water soluble acrylic acids are the SYNTAN RS3 purchased from Shi Mite (Nanjing) leather chemicals Co., Ltd；
AC- sulfitings grease is the SYNTHOL AC purchased from Shi Mite (Nanjing) leather chemicals Co., Ltd；
707 be the SYNTHOL YY 707 purchased from Shi Mite (Nanjing) leather chemicals Co., Ltd；
EG60 is the SULPHIROL EG 60 purchased from Shi Mite (Nanjing) leather chemicals Co., Ltd；
AK is the POLYOL AK purchased from Shi Mite (Nanjing) leather chemicals Co., Ltd；
Mould inhibitor is the mould inhibitor TJ-A2233 purchased from Sichuan Ting Jiang new materials limited company.
Embodiment 1
The preparation technology of strong force of explosion double-layer leather, comprises the following steps：
Step 1: primary water：
Double-layer leather cladding is placed in rotary drum and carries out primary water, primary water leather is obtained, wherein, primary water process
For：Successively primary water is carried out toward the following component added in rotary drum according to cladding weight meter：190% water, 0.4% soda ash and
0.1% degreasing agent, wherein, primary water temperature is 48 DEG C, after primary water 55min, carries out discharge opeing to rotary drum, then adds water
Progress is washed and discharge opeing.
Step 2: secondary backwater：
Gained primary water leather in step one is subjected to secondary backwater, secondary backwater leather is obtained, wherein, secondary backwater mistake
Cheng Wei：Successively secondary backwater is carried out toward the following component added in rotary drum according to cladding weight meter：190% water, 0.4% soda ash
With 0.10% degreasing agent, wherein secondary return water temperature is 40 DEG C, after secondary backwater 55min, discharge opeing, Ran Houjia are carried out to rotary drum
Water wash and discharge opeing；By secondary backwater, effectively cladding can be washed, go the removal of impurity.
Step 3: retanning and carrying alkali：
Retanning is carried out to the secondary backwater leather of gained in step 2 and alkali process is put forward, alkali leather must be carried, wherein, retanning process
In, first successively toward adding after 90% water and 0.4% formic acid according to cladding weight meter, rotary drum 28min in rotary drum, measuring pH is
2.8, it is subsequently added into after the 1.3%GM aldehyde tanning agents according to cladding weight meter, rotary drum 28min, adds according to cladding weight meter
After 2% chromium powder, rotary drum 68min, retanned leather is obtained；
Then carry out putting forward alkali technique, wherein, during carrying alkali, successively toward adding 48% according to cladding weight meter in rotary drum
Water and 0.8% sodium formate, after rotary drum 28min, it is 3.0 to measure pH, and then discharge opeing obtains plentiful surface, surface fiber finer, softness
Carry alkali leather；
Step 4: neutralizing：
Alkali leather is carried to gained in step 3 and carries out neutralisation treatment, neutralization leather is obtained, wherein, in N-process, successively
Add after 145% water according to cladding weight meter, 1.8% sodium formate and 2% nertralizer, rotary drum 28min, add successively in toward rotary drum
Enter after 0.5% sodium bicarbonate and 0.4% dodium thiosulfate according to cladding weight meter, rotary drum 58min, it is 4.8 to measure pH, then add and press
According to 1.8% acrylic acid of cladding weight meter, discharge opeing after rotary drum 58min, and washing and discharge opeing be twice respectively；
Step 5: dyeing and stuffing：
Leather will be neutralized obtained by step 4 to be dyed and stuffing processing, obtains colouring leather, wherein, in dyeing course,
Successively toward adding 48% water according to cladding weight meter, 1%RS-3 water soluble acrylic acids and 0.8%AC- sulfited oils in rotary drum
After fat, rotary drum 28min, sequentially add according to cladding weight meter 1% replace filler XAR, 1%FRBC, 1%UR synthetic filling and
0.7% dispersant, then adds dyestuff and obtains dye liquor, dye liquor temperature is progress stuffing processing after 48 DEG C, rotary drum 18min, wherein, plus
During fat, 2.5%AC- sulfitings grease according to cladding weight meter, 1%707,0.5%EG60,0.5% are sequentially added
Carried out after AK% and 0.08% mould inhibitor, rotary drum 58min to color, then discharge opeing, that is, obtain, with inserts, improving the strong of leather
Degree；
Step 6: fixation：
Fixation treatment is carried out to colouring leather obtained by step 5, fixation leather is obtained, wherein, during fixation treatment, successively
148% water and 1.8% formic acid according to cladding weight meter are added in toward rotary drum, wherein, formic acid is in adding procedure, first by formic acid
Three parts are divided equally into, rotary drum 8min after first part is added, second part of rotary drum 8min is then added, the 3rd part and rotary drum is eventually adding
18min；
Step 7: washing：
Fixation leather obtained by step 6 wash and discharge opeing, fixation agents useful for same and its impurity is effectively removed, obtains water
Wash leather；
Step 8: going out bulging drying：
Gained washing leather in step 7 is removed into rotary drum, washing leather is moved into vacuum drier is dried, then
Move into drying baker and dry again, obtain drying leather, wherein, the temperature when vacuum drier is dried is 55 DEG C, vacuum drying
The humidity of machine is 40%, and the dry time is that drying temperature is 70 DEG C in 7min, the drying baker, and drying time is 8h, drying
Cladding humidity afterwards is 9%；
Step 9: breaking soft, buffing and gently falling：
Gained drying leather in step 8 is carried out breaking soft, buffing and gently fallen, strong force of explosion leather is obtained, wherein, when gently falling
Between be 10min so that while leather has strong force of explosion, with very strong flexibility.
Embodiment 2
The preparation technology of strong force of explosion double-layer leather, comprises the following steps：
Step 1: primary water：
Double-layer leather cladding is placed in rotary drum and carries out primary water, primary water leather is obtained, wherein, primary water process
For：Successively primary water is carried out toward the following component added in rotary drum according to cladding weight meter：200% water, 0.5% soda ash and
0.2% degreasing agent, wherein, primary water temperature is 45 DEG C, after primary water 60min, carries out discharge opeing to rotary drum, then adds water
Progress is washed and discharge opeing.
Step 2: secondary backwater：
Gained primary water leather in step one is subjected to secondary backwater, secondary backwater leather is obtained, wherein, secondary backwater mistake
Cheng Wei：Successively secondary backwater is carried out toward the following component added in rotary drum according to cladding weight meter：200% water, 0.5% soda ash
With 0.15% degreasing agent, wherein secondary return water temperature is 45 DEG C, after secondary backwater 60min, discharge opeing, Ran Houjia are carried out to rotary drum
Water wash and discharge opeing；By secondary backwater, effectively cladding can be washed, go the removal of impurity.
Step 3: retanning and carrying alkali：
Retanning is carried out to the secondary backwater leather of gained in step 2 and alkali process is put forward, alkali leather must be carried, wherein, retanning process
In, first measure pH toward adding after 100% water and 0.5% formic acid according to cladding weight meter, rotary drum 30min in rotary drum successively
For 3.0, it is subsequently added into after the 1.5%GM aldehyde tanning agents according to cladding weight meter, rotary drum 30min, adds according to cladding weight meter
3% chromium powder, after rotary drum 70min, obtain retanned leather；
Then carry out putting forward alkali technique, wherein, during carrying alkali, successively toward adding 50% according to cladding weight meter in rotary drum
Water and 1% sodium formate, after rotary drum 30min, it is 3.1 to measure pH, then discharge opeing, obtains plentiful surface, surface fiber finer, soft
Carry alkali leather；
Step 4: neutralizing：
Alkali leather is carried to gained in step 3 and carries out neutralisation treatment, neutralization leather is obtained, wherein, in N-process, successively
Add after 150% water according to cladding weight meter, 2% sodium formate and 3% nertralizer, rotary drum 30min, sequentially add in toward rotary drum
According to 0.6% sodium bicarbonate and 0.5% dodium thiosulfate of cladding weight meter, after rotary drum 60min, it is 5.0 to measure pH, then add according to
Discharge opeing after 2% acrylic acid of cladding weight meter, rotary drum 60min, and respectively washing and discharge opeing twice；
Step 5: dyeing and stuffing：
Leather will be neutralized obtained by step 4 to be dyed and stuffing processing, obtains colouring leather, wherein, in dyeing course,
Successively toward adding 50% water according to cladding weight meter, 2%RS-3 water soluble acrylic acids and 1%AC- sulfiting greases in rotary drum,
After rotary drum 30min, sequentially add according to cladding weight meter 2% replace filler XAR, 2%FRBC, 2%UR synthetic filling and
1% dispersant, then adds dyestuff and obtains dye liquor, dye liquor temperature is progress stuffing processing after 45 DEG C, rotary drum 20min, wherein, stuffing
During, sequentially add 3%AC- sulfitings grease according to cladding weight meter, 1.5%707,1%EG60,1%AK% and
Carried out after 0.1% mould inhibitor, rotary drum 60min to color, then discharge opeing, that is, obtain improving the intensity of leather with inserts；
Step 6: fixation：
Fixation treatment is carried out to colouring leather obtained by step 5, fixation leather is obtained, wherein, during fixation treatment, successively
150% water and 2% formic acid according to cladding weight meter are added in toward rotary drum, wherein, formic acid first puts down formic acid in adding procedure
It is divided into three parts, adds rotary drum 10min after first part, then add second part of rotary drum 10min, is eventually adding the 3rd part and rotary drum
20min；
Step 7: washing：
Fixation leather obtained by step 6 wash and discharge opeing, fixation agents useful for same and its impurity is effectively removed, obtains water
Wash leather；
Step 8: going out bulging drying：
Gained washing leather in step 7 is removed into rotary drum, washing leather is moved into vacuum drier is dried, then
Move into drying baker and dry again, obtain drying leather, wherein, the temperature when vacuum drier is dried is 60 DEG C, vacuum drying
The humidity of machine is 43%, and the dry time is that drying temperature is 75 DEG C in 8min, the drying baker, and drying time is 8.5h, is dried
Cladding humidity after dry is 10%；
Step 9: breaking soft, buffing and gently falling：
Gained drying leather in step 8 is carried out breaking soft, buffing and gently fallen, strong force of explosion leather is obtained, wherein, when gently falling
Between be 15min so that while leather has strong force of explosion, with very strong flexibility.
Embodiment 3
The preparation technology of strong force of explosion double-layer leather, comprises the following steps：
Step 1: primary water：
Double-layer leather cladding is placed in rotary drum and carries out primary water, primary water leather is obtained, wherein, primary water process
For：Successively primary water is carried out toward the following component added in rotary drum according to cladding weight meter：210% water, 0.6% soda ash and
0.3% degreasing agent, wherein, primary water temperature is 50 DEG C, after primary water 65min, carries out discharge opeing to rotary drum, then adds water
Progress is washed and discharge opeing；
Step 2: secondary backwater：
Gained primary water leather in step one is subjected to secondary backwater, secondary backwater leather is obtained, wherein, secondary backwater mistake
Cheng Wei：Successively secondary backwater is carried out toward the following component added in rotary drum according to cladding weight meter：210% water, 0.6% soda ash
With 0.20% degreasing agent, wherein secondary return water temperature is 43 DEG C, after secondary backwater 65min, discharge opeing, Ran Houjia are carried out to rotary drum
Water wash and discharge opeing；
Step 3: retanning and carrying alkali：
Retanning is carried out to the secondary backwater leather of gained in step 2 and alkali process is put forward, alkali leather must be carried, wherein, retanning process
In, first measure pH toward adding after 110% water and 0.6% formic acid according to cladding weight meter, rotary drum 32min in rotary drum successively
For 3.2, it is subsequently added into after the 1.7%GM aldehyde tanning agents according to cladding weight meter, rotary drum 32min, adds according to cladding weight meter
4% chromium powder, after rotary drum 72min, obtain retanned leather；
Then carry out putting forward alkali technique, wherein, during carrying alkali, successively toward adding 52% according to cladding weight meter in rotary drum
Water and 1.2% sodium formate, after rotary drum 32min, it is 3.2 to measure pH, and then discharge opeing must carry alkali leather；
Step 4: neutralizing：
Alkali leather is carried to gained in step 3 and carries out neutralisation treatment, neutralization leather is obtained, wherein, in N-process, successively
Add after 155% water according to cladding weight meter, 2.2% sodium formate and 4% nertralizer, rotary drum 32min, add successively in toward rotary drum
Enter after 0.7% sodium bicarbonate and 0.6% dodium thiosulfate according to cladding weight meter, rotary drum 62min, it is 5.2 to measure pH, then add and press
According to 2.2% acrylic acid of cladding weight meter, discharge opeing after rotary drum 62min, and washing and discharge opeing be twice respectively；
Step 5: dyeing and stuffing：
Leather will be neutralized obtained by step 4 to be dyed and stuffing processing, obtains colouring leather, wherein, in dyeing course,
Successively toward adding 52% water according to cladding weight meter, 3%RS-3 water soluble acrylic acids and 1.2%AC- sulfited oils in rotary drum
After fat, rotary drum 32min, sequentially add and replace filler XAR, 3%FRBC, 3%UR synthetic filling according to the 3% of cladding weight meter
With 1.3% dispersant, then add dyestuff and obtain dye liquor, dye liquor temperature is progress stuffing processing after 50 DEG C, rotary drum 22min, wherein,
During stuffing, sequentially add 3.5%AC- sulfitings grease according to cladding weight meter, 2%707,1.5%EG60,
Carried out after 1.5AK% and 0.12% mould inhibitor, rotary drum 62min to color, then discharge opeing；
Step 6: fixation：
Fixation treatment is carried out to colouring leather obtained by step 5, fixation leather is obtained, wherein, during fixation treatment, successively
152% water and 2.2% formic acid according to cladding weight meter are added in toward rotary drum, wherein, formic acid is in adding procedure, first by formic acid
Three parts are divided equally into, rotary drum 12min after first part is added, second part of rotary drum 12min is then added, the 3rd part and rotary drum is eventually adding
22min；
Step 7: washing：
Fixation leather obtained by step 6 wash and discharge opeing, washing leather is obtained；
Step 8: going out bulging drying：
Gained washing leather in step 7 is removed into rotary drum, washing leather is moved into vacuum drier is dried, then
Move into drying baker and dry again, obtain drying leather, wherein, the temperature when vacuum drier is dried is 65 DEG C, vacuum drying
The humidity of machine is 45%, and the dry time is that drying temperature is 80 DEG C in 9min, the drying baker, and drying time is 9h, drying
Cladding humidity afterwards is 11%.
Step 9: breaking soft, buffing and gently falling：
Gained drying leather in step 8 is carried out breaking soft, buffing and gently fallen, strong force of explosion leather is obtained, wherein, when gently falling
Between be 20min.
By bursting strength tester, tensile testing machine, sewing exerciser, sweat proof exerciser and constant temperature roaster to above-mentioned reality
Apply the strong force of explosion double-layer leather progress performance detection that example 1~3 is obtained, testing result such as table 1：
Table 1：The testing result of strong force of explosion double-layer leather
As shown in Table 1, the strong force of explosion double-layer leather tension as made from the inventive method and tear resistance are strong, rub resistance
Performance is strong, and resistance to tortuous performance is strong, and with heavy blasting performance, service life is long.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (9)
- The preparation technology of the last 1. force of explosion double-layer leather, it is characterised in that comprise the following steps：Step 1: primary water：Double-layer leather cladding is placed in rotary drum and carries out primary water, primary water leather is obtained, wherein, primary water process is： Successively primary water is carried out toward the following component added in rotary drum according to cladding weight meter：190 ~ 210% water, 0.4 ~ 0.6 % is pure Alkali and 0.1 ~ 0.3 % degreasing agents, wherein, primary water temperature is 45 ~ 50 DEG C, and after the min of primary water 55 ~ 65, rotary drum is entered Row discharge opeing, the progress that then adds water is washed and discharge opeing；Step 2: secondary backwater：Gained primary water leather in step one is subjected to secondary backwater, secondary backwater leather is obtained, wherein, secondary backwater process For：Successively secondary backwater is carried out toward the following component added in rotary drum according to cladding weight meter：190 ~ 210% water, 0.4 ~ 0.6% Soda ash and 0.10 ~ 0.20% degreasing agent, wherein secondary return water temperature is 40 ~ 45 DEG C, after the secondary min of backwater 55 ~ 65, to turning Drum carries out discharge opeing, and the progress that then adds water is washed and discharge opeing；Step 3: retanning and carrying alkali：Retanning is carried out to the secondary backwater leather of gained in step 2 and alkali process is put forward, alkali leather must be carried, wherein, during retanning, First successively toward adding after 90 ~ 110% water and 0.4 ~ 0.6 % formic acid according to cladding weight meter, the min of rotary drum 28 ~ 32 in rotary drum PH is 2.8 ~ 3.2, is subsequently added into after 1.3 ~ 1.7 %GM aldehyde tanning agents according to cladding weight meter, the min of rotary drum 28 ~ 32, adds According to 2 ~ 4% chromium powders of cladding weight meter, after the min of rotary drum 68 ~ 72, retanned leather is obtained；Then carry out putting forward alkali technique, wherein, during carrying alkali, successively toward add in rotary drum according to cladding weight meter 48 ~ 52% Water and 0.8 ~ 1.2 % sodium formates, the min of rotary drum 28 ~ 32 to pH are 3.0 ~ 3.2, and then discharge opeing must carry alkali leather；Step 4: neutralizing：Alkali leather is carried to gained in step 3 and carries out neutralisation treatment, neutralization leather is obtained, wherein, it is past successively to turn in N-process 145 ~ 155 % water according to cladding weight meter, 1.8 ~ 2.2 % sodium formates and 2 ~ 4% nertralizers, the min of rotary drum 28 ~ 32 are added in drum Afterwards, 0.5 ~ 0.7 % sodium bicarbonate and 0.4 ~ 0.6 % dodium thiosulfate according to cladding weight meter, the min of rotary drum 58 ~ 62 to pH are sequentially added For 4.8 ~ 5.2, discharge opeing after 1.8 ~ 2.2 % acrylic acid according to cladding weight meter, the min of rotary drum 58 ~ 62 is then added, and point Not Shui Xi and discharge opeing twice；Step 5: dyeing and stuffing：Leather will be neutralized obtained by step 4 to be dyed and stuffing processing, obtains colouring leather, wherein, in dyeing course, successively 48 ~ 52 % water according to cladding weight meter, 1 ~ 3 % RS-3 water soluble acrylic acids and 0.8 ~ 1.2%AC- sulfurous acid are added in toward rotary drum After carburetion fat, the min of rotary drum 28 ~ 32, sequentially add according to 1 ~ 3% displacement filler XAR of cladding weight meter, 1 ~ 3 %FRBC, 1 ~ 3 %UR synthetic fillings and 0.7 ~ 1.3 % dispersants, then add dyestuff and obtain dye liquor, dye liquor temperature is 45 ~ 50 DEG C, and rotary drum 18 ~ Stuffing processing is carried out after 22 min, wherein, during stuffing, sequentially add 2.5 ~ 3.5%AC-sulfurous according to cladding weight meter It is acidified grease, 1 ~ 2 % 707,0.5 ~ 1.5 % EG60,0.5 ~ 1.5 AK % and 0.08 ~ 0.12 % mould inhibitors, rotary drum 58 ~ 62 Carried out after min to color, then discharge opeing；Step 6: fixation：Fixation treatment is carried out to colouring leather obtained by step 5, fixation leather is obtained, wherein, it is past successively to turn during fixation treatment 148 ~ 152 % water and 1.8 ~ 2.2 % formic acid according to cladding weight meter are added in drum, wherein, formic acid first will in adding procedure Formic acid is divided equally into three parts, adds the min of rotary drum 8 ~ 12 after first part, then adds second part of min of rotary drum 8 ~ 12, is eventually adding the Three parts and the min of rotary drum 18 ~ 22；Step 7: washing：Fixation leather obtained by step 6 wash and discharge opeing, washing leather is obtained；Step 8: going out bulging drying：Gained washing leather in step 7 is removed into rotary drum, washing leather is moved into vacuum drier is dried, and then moves again Enter and dried in drying baker, obtain drying leather, wherein, the temperature when vacuum drier is dried is 55 ~ 65 DEG C, vacuum drier Humidity be 40 ~ 45%, dry time is that drying temperature is 70 ~ 80 DEG C in 7 ~ 9min, the drying baker, drying time is 8 ~ 9h, the cladding humidity after drying is 9 ~ 11%；Step 9: breaking soft, buffing and gently falling：Gained drying leather in step 8 break soft, buffing and gently fall, strong force of explosion leather is obtained, wherein, gently the time of falling be 10~20 min。
- 2. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that one described in step one During secondary backwater, primary water is carried out toward the component added in rotary drum according to cladding weight meter successively：200 % water, 0.5% Soda ash and 0.2% degreasing agent, wherein, primary water temperature is 45 DEG C, after the min of primary water 60, carries out discharge opeing to rotary drum, so After the progress that adds water wash and discharge opeing.
- 3. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that two described in step 2 During secondary backwater, secondary backwater is carried out toward the following component added in rotary drum according to cladding weight meter successively：200 % water, 0.5% soda ash and 0.15% degreasing agent, wherein secondary return water temperature is 45 DEG C, after the secondary min of backwater 60, are arranged rotary drum Liquid, the progress that then adds water is washed and discharge opeing.
- 4. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that multiple described in step 3 During tan, first successively toward adding after water and 0.5 % formic acid according to 100 % of cladding weight meter, the min of rotary drum 30 in rotary drum PH is 3.0, is subsequently added into after the 1.5 %GM aldehyde tanning agents according to cladding weight meter, the min of rotary drum 30, adds according to cladding weight After 3 % chromium powders of gauge, the min of rotary drum 70, retanned leather is obtained；Then carry out putting forward alkali technique, wherein, during carrying alkali, successively toward adding 50% water according to cladding weight meter in rotary drum With 1% sodium formate, pH is 3.1 after the min of rotary drum 30, and then discharge opeing must carry alkali leather.
- 5. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that in described in step 4 During with process, successively toward adding the 150 % water according to cladding weight meter, 2 % sodium formates and 3 % nertralizers, rotary drum 30 in rotary drum After min, it is 5.0 to sequentially add pH after the 0.6 % sodium bicarbonate and 0.5 % dodium thiosulfate according to cladding weight meter, the min of rotary drum 60, so Add discharge opeing after the 2 % acrylic acid according to cladding weight meter, the min of rotary drum 60 afterwards, and wash respectively twice and discharge opeing twice.
- 6. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that described in step 5 Dye in processing procedure, successively toward adding the 50 % water according to cladding weight meter, 2 %RS-3 water soluble acrylic acids and 1 % in rotary drum After AC- sulfiting greases, the min of rotary drum 30,2 % displacement fillers XAR, 2 % according to cladding weight meter are sequentially added FRBC, 2 %UR synthetic fillings and 1 % dispersants, then add dyestuff and obtain dye liquor, after dye liquor temperature is 45 DEG C, the min of rotary drum 20 Stuffing processing is carried out, wherein, during stuffing, sequentially add 3 %AC- sulfitings greases, 1.5 % according to cladding weight meter 707th, carried out after 1 %EG60,1 %AK and 0.1 % mould inhibitors, the min of rotary drum 60 to color, then discharge opeing.
- 7. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that solid described in step 6 During color, successively toward adding 150 % water and 2 % formic acid according to cladding weight meter in rotary drum, wherein, formic acid is in adding procedure In, formic acid is first divided into three parts, the min of rotary drum 10 after first part is added, second part of min of rotary drum 10 is then added, finally Add the 3rd part and the min of rotary drum 20.
- 8. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that true described in step 8 Temperature when empty drying machine is dried is 60 DEG C, and the humidity of vacuum drier is 43 %, and the dry time is 8 min, the drying Drying temperature is 75 DEG C in case, and drying time is 8.5 h, and the cladding humidity after drying is 10 %.
- 9. the preparation technology of strong force of explosion double-layer leather according to claim 1, it is characterised in that light in the step 9 The time is fallen for 15 min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798605A (en) * | 2010-03-16 | 2010-08-11 | 浙江通天星集团股份有限公司 | Energy saving and emission reduction method for retanning and dyeing high-strength cow split leather furniture |
| CN105133398A (en) * | 2015-08-27 | 2015-12-09 | 中国轻工业武汉设计工程有限责任公司 | Simple cow split leather color changing technology |
| CN106555018A (en) * | 2016-11-22 | 2017-04-05 | 晋江市永建皮革制品有限公司 | A kind of environmentally friendly dyeing of cow split leather |
-
2017
- 2017-07-31 CN CN201710639140.7A patent/CN107287365A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798605A (en) * | 2010-03-16 | 2010-08-11 | 浙江通天星集团股份有限公司 | Energy saving and emission reduction method for retanning and dyeing high-strength cow split leather furniture |
| CN105133398A (en) * | 2015-08-27 | 2015-12-09 | 中国轻工业武汉设计工程有限责任公司 | Simple cow split leather color changing technology |
| CN106555018A (en) * | 2016-11-22 | 2017-04-05 | 晋江市永建皮革制品有限公司 | A kind of environmentally friendly dyeing of cow split leather |
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Application publication date: 20171024 |