CN104233845A - Production technology for printed/coated/dyed leather - Google Patents

Production technology for printed/coated/dyed leather Download PDF

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CN104233845A
CN104233845A CN201410479301.7A CN201410479301A CN104233845A CN 104233845 A CN104233845 A CN 104233845A CN 201410479301 A CN201410479301 A CN 201410479301A CN 104233845 A CN104233845 A CN 104233845A
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veneer
stamp
coated
dyeing
dye
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CN104233845B (en
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钱国春
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Zhejiang Meisheng New Materials Co ltd
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ZHEJIANG MEISHENG INDUSTRY Co Ltd
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Abstract

The invention relates to a production technology for printed/coated/dyed leather and belongs to the technical field of fabric production. The production technology comprises the steps as follows: a base fabric, pretreatment, printing, PU (polyurethane) coating, dyeing, shaping, coiling and packaging. The printed/coated/dyed leather produced with the technology is excellent in color fastness, good in cold-resistant, folding-resistant, dustproof and hydrolysis-resistant performance, easy to finish, diversified in pattern, soft in hand feeling, high in resilience and real in leather feeling.

Description

The manufacturing technique of a kind of stamp/veneer/dyeing leather
Technical field
The present invention relates to the manufacturing technique of a kind of stamp/veneer/dyeing leather, belong to the technical field that fabric is produced.
Background technology
Along with making constant progress of society, people trend towards the pursuit of the aspects such as functional, low-carbon (LC), environmental protection, fashion more to dress.We must be market-oriented as fabric manufacturing enterprise, actively seizes the opportunity to make and react fast, develop the new product meeting fashion trend enrich fabric market with the theory innovated.The shortcomings such as conventional P U product has COLOR FASTNESS, cold-resistant, folding, dust-proof, hydrolysis is poor and flower pattern is little and single, not easily arrange.For overcoming these shortcomings, this case produces thus.
Summary of the invention
The object of this invention is to provide the manufacturing technique of a kind of stamp/veneer/dyeing leather, have superior COLOR FASTNESS by this manufacture technics a kind of stamp/veneer out/dyeing leather, cold-resistant, folding, dust-proof, anti-hydrolytic performance good, is easy to arrange, flower pattern is various, and soft, high resilience.
For achieving the above object, the technical solution adopted in the present invention is:
A manufacturing technique for stamp/veneer/dyeing leather, comprises the following steps: Ji Bu → pre-treatment → stamp → PU veneer → dyeing → sizing → clot, packaging.
As the further setting of such scheme, described base cloth adopts knitted stretch cloth.
Described Ji Bu is warp knitting cloth, and with 75D low-stretch yarn and 40D spandex for raw material.
Described pre-treatment, comprises preshrunk, fibrillation, rinsing, sizing; Wherein, preshrunk, fibrillation, rinsing are carried out in same cylinder simultaneously, and water temperature controls at 120-130 DEG C, and temperature retention time is 30-40min, and alkali concn is 20g/L, and clever concentration of deoiling is 2g/L; Temperature during sizing is 150-160 DEG C, and the speed of a motor vehicle is 30m/min.
Described pre-treatment, after its preshrunk, fibrillation, rinsing complete, naturally cools to 65-75 DEG C, and then adds cold water and wash, and finally goes out cylinder, sizing.
Described pre-treatment, during its rinsing, add brightening agent, the addition of brightening agent is that every 300 kilograms of base cloth add 200g brightening agent.
Described stamp, adopts flat bed screen printing.
Described PU veneer carries out in the printed side of Ji Bu, specifically adopts following steps:
Release liners sends → the first painting the → the first baking → cooling → the second painting → the second dries → cools →
3rd painting → base cloth transmission → laminating → drying → cooling → stripping → synthetic leather batches → and release liners batches;
Wherein, the speed of PU veneer is 5-15m/min;
First be coated with time, institute be coated with PU expect thickness be 0.01-0.02mm;
During the first baking, the temperature selected is 130-150 DEG C;
Second be coated with time, institute be coated with PU expect thickness be 0.1-0.2mm;
During the second baking, the temperature selected is 130-150 DEG C;
3rd be coated with time, institute be coated with PU expect thickness be 0.1-0.2mm;
Time dry, the temperature selected is 60-80 DEG C.
Described dyeing, the pH value of its dye liquor controls at 4-5, and bath raio is 1:20; Play dye at normal temperatures, a dye is congenial powder 1-2g/L, glacial acetic acid 0.5-2g/L after 5 minutes, plays a dye and throws levelling agent 1-4g/L after 15 minutes, wetting softener 1-2g/L, plays a dye and throws dyestuff after 20 minutes, plays a dye and is warmed up to 100 DEG C after 30 minutes, and be incubated 50-90 minute.
Product of the present invention is mainly used in the fashion winter dress fabric of young woman, fashion element etc. whether is had to require to fabric higher, we are under the guidance of college professor, and the feedback opinion of client, do a large amount of dye materials, the test of auxiliary agent and dyeing, even for realizing dye, dye is dark, imbue and keep the target of high dyeability, technical staff generally determines that the one in printed color represents primary colours, carry out covering look process according to overall printing quality, our Application and Development level-dyeing property is " in three primary colors, dyeing technique is spelled in acid " preferably, in repeatedly dyeing course, find that the quality problems of impact dyeing mainly contain three factors: 1, the pH value of dye liquor, 2, the temperature of dyeing, 3, the time of dyeing.We technical staff adjusts repeatedly to above affecting parameters, and also adjusts the auxiliary agent such as levelling agent, glacial acetic acid used time, consumption, finally determines above dyeing.
The temperature of described sizing is 90-110 DEG C, and the speed of a motor vehicle is 10-15m/min.
Have superior COLOR FASTNESS by the produced stamp/veneer of present invention process/dyeing leather, cold-resistant, folding, dust-proof, anti-hydrolytic performance good, is easy to arrange, and flower pattern is various, and soft, high resilience, skin sense is true.
By the produced stamp/veneer of present invention process/dyeing leather, remain medium-to-high grade clothing fabric and should have merrily and lightheartedly, sliding glutinous, foldable not the feature such as trace, make PU clothing fabric successfully move towards new, light, thin, soft development again, having merged fashion, functional, comfortableness and the feature of environmental protection, is a new product catering to clothing fabric exploitation trend.
By the produced stamp/veneer of present invention process/dyeing leather, its examining report is as following table:
Detailed description of the invention
Below by specific embodiment, the invention will be further described, but the present invention not limited by following examples.
Embodiment 1
A manufacturing technique for stamp/veneer/dyeing leather, comprises the following steps: Ji Bu → pre-treatment → stamp → PU veneer → dyeing → sizing → clot, packaging.
Wherein, base cloth preferably adopts knitted stretch cloth.In the present embodiment, Ji Bu selects through compiling pearl ground screen cloth, and with 75D low-stretch yarn and 40D spandex for raw material.Meanwhile, every Gram Mass of base cloth is 55(and 55g/m 2).
The operation of pre-treatment, comprises preshrunk, fibrillation, rinsing, sizing.Wherein, preshrunk, fibrillation, rinsing are carried out in same cylinder simultaneously, and water temperature controls at 120 DEG C, and temperature retention time is 40min, and alkali concn is 20g/L, and clever concentration of deoiling is 2g/L; Temperature during sizing is 150 DEG C, and the speed of a motor vehicle is 30m/min.
Preferred as pre-treatment, after its preshrunk, fibrillation, rinsing complete, naturally cools to 65 DEG C, and then slowly adds cold water and wash, and finally goes out cylinder, sizing.Preshrunk, fibrillation, rinsing, until water-washing process below, cylinder remains rotation.
In the operation of pre-treatment, during rinsing, when adding brightening agent if necessary, the addition of brightening agent is that every 300 kilograms of base cloth add 200g brightening agent.
In the present embodiment, the operation of stamp, adopts flat bed screen printing.Disperse dye is adopted to carry out stamp.
PU veneer carries out in the printed side of Ji Bu, specifically adopts following steps:
Release liners sends → the first painting the → the first baking → cooling → the second painting → the second dries → cools →
3rd painting → base cloth transmission → laminating → drying → cooling → stripping → synthetic leather batches → and release liners batches.
Wherein, the omnidistance speed of PU veneer is 5m/min;
First be coated with time, institute be coated with PU expect thickness be 0.01mm;
During the first baking, the temperature selected is 130 DEG C, and baking oven length is 10m;
First dried after carry out being cooled to 35 DEG C, then enter the second painting;
Second be coated with time, institute be coated with PU expect thickness be 0.1mm;
During the second baking, the temperature selected is 130 DEG C, and baking oven length is 10m;
Second dried after carry out being cooled to 35 DEG C, then enter the 3rd painting;
3rd be coated with time, institute be coated with PU expect thickness be 0.1mm;
Time dry, the temperature selected is 60 DEG C, and the length of drying box is 20m;
After drying, carry out being cooled to 20 DEG C, then peel off.
The operation of dyeing, the pH value of its dye liquor controls 4, and bath raio is 1:20; Play dye at normal temperatures, a dye is congenial powder 1g/L, glacial acetic acid 0.5g/L after 5 minutes, plays a dye and throws levelling agent 1g/L after 15 minutes, wetting softener 1g/L, plays a dye and throws dyestuff after 20 minutes, plays a dye and is warmed up to 100 DEG C after 30 minutes, and be incubated 50 minutes.
Setting temperature after dyeing is 90 DEG C, and the speed of a motor vehicle is 10m/min.
 
Embodiment 2
A manufacturing technique for stamp/veneer/dyeing leather, comprises the following steps: Ji Bu → pre-treatment → stamp → PU veneer → dyeing → sizing → clot, packaging.
Wherein, base cloth preferably adopts knitted stretch cloth.In the present embodiment, Ji Bu selects through compiling pearl ground screen cloth, and with 75D low-stretch yarn and 40D spandex for raw material.Meanwhile, every Gram Mass of base cloth is 60(and 60g/m 2).
The operation of pre-treatment, comprises preshrunk, fibrillation, rinsing, sizing.Wherein, preshrunk, fibrillation, rinsing are carried out in same cylinder simultaneously, and water temperature controls at 125 DEG C, and temperature retention time is 35min, and alkali concn is 20g/L, and clever concentration of deoiling is 2g/L; Temperature during sizing is 155 DEG C, and the speed of a motor vehicle is 30m/min.
Preferred as pre-treatment, after its preshrunk, fibrillation, rinsing complete, naturally cools to 70 DEG C, and then slowly adds cold water and wash, and finally goes out cylinder, sizing.Preshrunk, fibrillation, rinsing, until water-washing process below, cylinder remains rotation.
In the operation of pre-treatment, during rinsing, when adding brightening agent if necessary, the addition of brightening agent is that every 300 kilograms of base cloth add 200g brightening agent.
In the present embodiment, the operation of stamp, adopts flat bed screen printing.Disperse dye is adopted to carry out stamp.
PU veneer carries out in the printed side of Ji Bu, specifically adopts following steps:
Release liners sends → the first painting the → the first baking → cooling → the second painting → the second dries → cools →
3rd painting → base cloth transmission → laminating → drying → cooling → stripping → synthetic leather batches → and release liners batches.
Wherein, the omnidistance speed of PU veneer is 10m/min;
First be coated with time, institute be coated with PU expect thickness be 0.015mm;
During the first baking, the temperature selected is 140 DEG C, and baking oven length is 8m;
First dried after carry out being cooled to 40 DEG C, then enter the second painting;
Second be coated with time, institute be coated with PU expect thickness be 0.15mm;
During the second baking, the temperature selected is 140 DEG C, and baking oven length is 8m;
Second dried after carry out being cooled to 40 DEG C, then enter the 3rd painting;
3rd be coated with time, institute be coated with PU expect thickness be 0.15mm;
Time dry, the temperature selected is 70 DEG C, and the length of drying box is 18m;
After drying, carry out being cooled to 25 DEG C, then peel off.
The operation of dyeing, the pH value of its dye liquor controls 4.5, and bath raio is 1:20; Play dye at normal temperatures, a dye is congenial powder 1.5g/L, glacial acetic acid 1g/L after 5 minutes, plays a dye and throws levelling agent 2.5g/L after 15 minutes, wetting softener 1.5g/L, plays a dye and throws dyestuff after 20 minutes, plays a dye and is warmed up to 100 DEG C after 30 minutes, and be incubated 70 minutes.
Setting temperature after dyeing is 100 DEG C, and the speed of a motor vehicle is 12m/min.
 
Embodiment 3
A manufacturing technique for stamp/veneer/dyeing leather, comprises the following steps: Ji Bu → pre-treatment → stamp → PU veneer → dyeing → sizing → clot, packaging.
Wherein, base cloth preferably adopts knitted stretch cloth.In the present embodiment, Ji Bu selects through compiling pearl ground screen cloth, and with 75D low-stretch yarn and 40D spandex for raw material.Meanwhile, every Gram Mass of base cloth is 65(and 65g/m 2).
The operation of pre-treatment, comprises preshrunk, fibrillation, rinsing, sizing.Wherein, preshrunk, fibrillation, rinsing are carried out in same cylinder simultaneously, and water temperature controls at 130 DEG C, and temperature retention time is 30min, and alkali concn is 20g/L, and clever concentration of deoiling is 2g/L; Temperature during sizing is 160 DEG C, and the speed of a motor vehicle is 30m/min.
Preferred as pre-treatment, after its preshrunk, fibrillation, rinsing complete, naturally cools to 75 DEG C, and then slowly adds cold water and wash, and finally goes out cylinder, sizing.Preshrunk, fibrillation, rinsing, until water-washing process below, cylinder remains rotation.
In the operation of pre-treatment, during rinsing, when adding brightening agent if necessary, the addition of brightening agent is that every 300 kilograms of base cloth add 200g brightening agent.
In the present embodiment, the operation of stamp, adopts flat bed screen printing.Disperse dye is adopted to carry out stamp.
PU veneer carries out in the printed side of Ji Bu, specifically adopts following steps:
Release liners sends → the first painting the → the first baking → cooling → the second painting → the second dries → cools →
3rd painting → base cloth transmission → laminating → drying → cooling → stripping → synthetic leather batches → and release liners batches.
Wherein, the omnidistance speed of PU veneer is 15m/min;
First be coated with time, institute be coated with PU expect thickness be 0.02mm;
During the first baking, the temperature selected is 150 DEG C, and baking oven length is 6m;
First dried after carry out being cooled to 45 DEG C, then enter the second painting;
Second be coated with time, institute be coated with PU expect thickness be 0.2mm;
During the second baking, the temperature selected is 150 DEG C, and baking oven length is 6m;
Second dried after carry out being cooled to 45 DEG C, then enter the 3rd painting;
3rd be coated with time, institute be coated with PU expect thickness be 0.2mm;
Time dry, the temperature selected is 80 DEG C, and the length of drying box is 15m;
After drying, carry out being cooled to 30 DEG C, then peel off.
The operation of dyeing, the pH value of its dye liquor controls 5, and bath raio is 1:20; Play dye at normal temperatures, a dye is congenial powder 2g/L, glacial acetic acid 2g/L after 5 minutes, plays a dye and throws levelling agent 4g/L after 15 minutes, wetting softener 2g/L, plays a dye and throws dyestuff after 20 minutes, plays a dye and is warmed up to 100 DEG C after 30 minutes, and be incubated 90 minutes.
Setting temperature after dyeing is 110 DEG C, and the speed of a motor vehicle is 15m/min.
 
Embodiment 4
A manufacturing technique for stamp/veneer/dyeing leather, comprises the following steps: Ji Bu → pre-treatment → stamp → PU veneer → dyeing → sizing → clot, packaging.
In the present embodiment, Ji Bu selects woven suede nap.Meanwhile, every Gram Mass of base cloth is 56(and 56g/m 2).
The operation of pre-treatment, comprises preshrunk, fibrillation, rinsing, sizing, sanding.Wherein, preshrunk, fibrillation, rinsing are carried out in same cylinder simultaneously, and water temperature controls at 122 DEG C, and temperature retention time is 38min, and alkali concn is 20g/L, and clever concentration of deoiling is 2g/L; Temperature during sizing is 152 DEG C, and the speed of a motor vehicle is 30m/min, and during sanding, mill, bristle carry out simultaneously, and speed is 7-10 m/min.
Preferred as pre-treatment, after its preshrunk, fibrillation, rinsing complete, naturally cools to 68 DEG C, and then slowly adds cold water and wash, and finally goes out cylinder, sizing.Preshrunk, fibrillation, rinsing, until water-washing process below, cylinder remains rotation.
In the operation of pre-treatment, during rinsing, when adding brightening agent if necessary, the addition of brightening agent is that every 300 kilograms of base cloth add 200g brightening agent.
In the present embodiment, the operation of stamp, adopts flat bed screen printing.Disperse dye is adopted to carry out stamp.
PU veneer carries out in the printed side of Ji Bu, specifically adopts following steps:
Release liners sends → the first painting the → the first baking → cooling → the second painting → the second dries → cools →
3rd painting → base cloth transmission → laminating → drying → cooling → stripping → synthetic leather batches → and release liners batches.
Wherein, the omnidistance speed of PU veneer is 8m/min;
First be coated with time, institute be coated with PU expect thickness be 0.01mm;
During the first baking, the temperature selected is 135 DEG C, and baking oven length is 9m;
First dried after carry out being cooled to 38 DEG C, then enter the second painting;
Second be coated with time, institute be coated with PU expect thickness be 0.1mm;
During the second baking, the temperature selected is 136 DEG C, and baking oven length is 9m;
Second dried after carry out being cooled to 37 DEG C, then enter the 3rd painting;
3rd be coated with time, institute be coated with PU expect thickness be 0.1mm;
Time dry, the temperature selected is 66 DEG C, and the length of drying box is 18m;
After drying, carry out being cooled to 23 DEG C, then peel off.
The operation of dyeing, the pH value of its dye liquor controls 4, and bath raio is 1:20; Play dye at normal temperatures, a dye is congenial powder 1.2g/L, glacial acetic acid 0.9g/L after 5 minutes, plays a dye and throws levelling agent 2g/L after 15 minutes, wetting softener 1.3g/L, plays a dye and throws dyestuff after 20 minutes, plays a dye and is warmed up to 100 DEG C after 30 minutes, and be incubated 60 minutes.
Setting temperature after dyeing is 94 DEG C, and the speed of a motor vehicle is 11m/min.
 
Embodiment 5
A manufacturing technique for stamp/veneer/dyeing leather, comprises the following steps: Ji Bu → pre-treatment → stamp → PU veneer → dyeing → sizing → clot, packaging.
In the present embodiment, Ji Bu selects Weft knitting suede nap.Meanwhile, every Gram Mass of base cloth is 64(and 64g/m 2).
The operation of pre-treatment, comprises preshrunk, fibrillation, rinsing, sizing, sanding.Wherein, preshrunk, fibrillation, rinsing are carried out in same cylinder simultaneously, and water temperature controls at 128 DEG C, and temperature retention time is 32min, and alkali concn is 20g/L, and clever concentration of deoiling is 2g/L; Temperature during sizing is 158 DEG C, and the speed of a motor vehicle is 30m/min, is that sanding, bristle carry out simultaneously during sanding, speed 6-9 m/min.
Preferred as pre-treatment, after its preshrunk, fibrillation, rinsing complete, naturally cools to 72 DEG C, and then slowly adds cold water and wash, and finally goes out cylinder, sizing.Preshrunk, fibrillation, rinsing, until water-washing process below, cylinder remains rotation.
In the operation of pre-treatment, during rinsing, when adding brightening agent if necessary, the addition of brightening agent is that every 300 kilograms of base cloth add 200g brightening agent.
In the present embodiment, the operation of stamp, adopts flat bed screen printing.Disperse dye is adopted to carry out stamp.
PU veneer carries out in the printed side of Ji Bu, specifically adopts following steps:
Release liners sends → the first painting the → the first baking → cooling → the second painting → the second dries → cools →
3rd painting → base cloth transmission → laminating → drying → cooling → stripping → synthetic leather batches → and release liners batches.
Wherein, the omnidistance speed of PU veneer is 12m/min;
First be coated with time, institute be coated with PU expect thickness be 0.02mm;
During the first baking, the temperature selected is 145 DEG C, and baking oven length is 7m;
First dried after carry out being cooled to 43 DEG C, then enter the second painting;
Second be coated with time, institute be coated with PU expect thickness be 0.2mm;
During the second baking, the temperature selected is 145 DEG C, and baking oven length is 8m;
Second dried after carry out being cooled to 42 DEG C, then enter the 3rd painting;
3rd be coated with time, institute be coated with PU expect thickness be 0.2mm;
Time dry, the temperature selected is 75 DEG C, and the length of drying box is 17m;
After drying, carry out being cooled to 30 DEG C, then peel off.
The operation of dyeing, the pH value of its dye liquor controls 5, and bath raio is 1:20; Play dye at normal temperatures, a dye is congenial powder 2g/L, glacial acetic acid 1.5g/L after 5 minutes, plays a dye and throws levelling agent 3g/L after 15 minutes, wetting softener 1.6g/L, plays a dye and throws dyestuff after 20 minutes, plays a dye and is warmed up to 100 DEG C after 30 minutes, and be incubated 60 minutes.
Setting temperature after dyeing is 105 DEG C, and the speed of a motor vehicle is 12m/min.
In above-described embodiment, PU material is Shanghai Huide Chemical Co., Ltd. HDU (20,20T, 30) serial dry type coating system.
In above-described embodiment, the TF-105CN type that spirit of deoiling is Zhejiang Province Chuanhua Co., Ltd deoils spirit.
In above-described embodiment, brightening agent is the TF-902L type fluorescent whitening agent of Zhejiang Province Chuanhua Co., Ltd.
In above-described embodiment, disperse dye specifically refers to: the environmental-friendly disperse dye that Shanghai Annuoqi Spinning Chemical Co., Ltd produces.
In above-described embodiment, dispersant is 9565 type dispersants of Shaoxing County Sheng Bao Chemical Co., Ltd.; Glacial acetic acid is the glacial acetic acid that Wujiang Zhong Tai Chemical Co., Ltd. provides; Levelling agent is Du Pu chemical plant, Shangyu city osmosis type levelling agent; Wetting softener is the LB-319 type wetting softener that Hangzhou Ou Laibao Chemical Co., Ltd. provides.
Above-described embodiment only illustrates inventive concept of the present invention for explaining, but not the restriction to rights protection of the present invention, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should fall into protection scope of the present invention.

Claims (10)

1. a manufacturing technique for stamp/veneer/dyeing leather, is characterized in that comprising the following steps: Ji Bu → pre-treatment → stamp → PU veneer → dyeing → sizing → clot, packaging.
2. the manufacturing technique of a kind of stamp/veneer as claimed in claim 1/dyeing leather, is characterized in that: described base cloth adopts knitted stretch cloth.
3. the manufacturing technique of a kind of stamp/veneer as claimed in claim 2/dyeing leather, is characterized in that: described Ji Bu is warp knitting cloth, and with 75D low-stretch yarn and 40D spandex for raw material.
4. the manufacturing technique of a kind of stamp/veneer as claimed in claim 1/dyeing leather, is characterized in that: described pre-treatment, comprises preshrunk, fibrillation, rinsing, sizing; Wherein, preshrunk, fibrillation, rinsing are carried out in same cylinder simultaneously, and water temperature controls at 120-130 DEG C, and temperature retention time is 30-40min, and alkali concn is 20g/L, and clever concentration of deoiling is 2g/L; Temperature during sizing is 150-160 DEG C, and the speed of a motor vehicle is 30m/min.
5. the manufacturing technique of a kind of stamp/veneer as claimed in claim 4/dyeing leather, is characterized in that: described pre-treatment, after its preshrunk, fibrillation, rinsing complete, naturally cools to 65-75 DEG C, and then adds cold water and wash, and finally goes out cylinder, sizing.
6. the manufacturing technique of a kind of stamp/veneer as claimed in claim 4/dyeing leather, is characterized in that: described pre-treatment, during its rinsing, add brightening agent, the addition of brightening agent is that every 300 kilograms of base cloth add 200g brightening agent.
7. the manufacturing technique of a kind of stamp/veneer as claimed in claim 1/dyeing leather, is characterized in that: described stamp, adopts flat bed screen printing.
8. the manufacturing technique of a kind of stamp/veneer as claimed in claim 1/dyeing leather, is characterized in that: described PU veneer carries out in the printed side of Ji Bu, specifically adopts following steps:
Release liners sends → the first painting the → the first baking → cooling → the second painting → the second dries → cools →
3rd painting → base cloth transmission → laminating → drying → cooling → stripping → synthetic leather batches → and release liners batches;
Wherein, the speed of PU veneer is 5-15m/min;
First be coated with time, institute be coated with PU expect thickness be 0.01-0.02mm;
During the first baking, the temperature selected is 130-150 DEG C;
Second be coated with time, institute be coated with PU expect thickness be 0.1-0.2mm;
During the second baking, the temperature selected is 130-150 DEG C;
3rd be coated with time, institute be coated with PU expect thickness be 0.1-0.2mm;
Time dry, the temperature selected is 60-80 DEG C.
9. the manufacturing technique of a kind of stamp/veneer as claimed in claim 1/dyeing leather, it is characterized in that: described dyeing, the pH value of its dye liquor controls at 4-5, and bath raio is 1:20; Play dye at normal temperatures, a dye is congenial powder 1-2g/L, glacial acetic acid 0.5-2g/L after 5 minutes, plays a dye and throws levelling agent 1-4g/L after 15 minutes, wetting softener 1-2g/L, plays a dye and throws dyestuff after 20 minutes, plays a dye and is warmed up to 100 DEG C after 30 minutes, and be incubated 50-90 minute.
10. the manufacturing technique of a kind of stamp/veneer as claimed in claim 1/dyeing leather, is characterized in that: the temperature of described sizing is 90-110 DEG C, and the speed of a motor vehicle is 10-15m/min.
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