CN106367542A - Manufacturing process for embossed leather - Google Patents
Manufacturing process for embossed leather Download PDFInfo
- Publication number
- CN106367542A CN106367542A CN201610766039.3A CN201610766039A CN106367542A CN 106367542 A CN106367542 A CN 106367542A CN 201610766039 A CN201610766039 A CN 201610766039A CN 106367542 A CN106367542 A CN 106367542A
- Authority
- CN
- China
- Prior art keywords
- dried
- roller
- embossing
- skin base
- leather
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/56—Ornamenting, producing designs, embossing
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/50—Glazing
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/58—Drying
-
- 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
- C14C11/00—Surface finishing of leather
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
- C14B2700/14—Processes or apparatus for setting-out, smoothing, ironing or polishing leather or hides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention relates to a leather manufacturing process and discloses a manufacturing process for embossed leather. The manufacturing process comprises the following steps that: 1) a leather blank is sequentially treated by polishing through a polishing machine; 2) primary embossing is carried out on the leather blank through an ironing board; 3) dye is sprayed on the surface of the leather blank after the leather blank is treated by primary embossing; 4) the leather blank after being dyed is dried; 5) the leather blank treated in the fourth step is treated by secondary dyeing and is dried; 6) the leather blank moves to the lower side of an embossing rolling wheel (1) driven by a conveyor belt (5) and is treated by secondary embossing through the embossing rolling wheel (1); 7) a precoating agent is sprayed to the leather blank through a spraying gun; and 8) a top layer brightening agent is sprayed to the leather blank. According to the manufacturing process, by regulating temperature variation of the leather blank after being dyed, the adhesion degree of a color is effectively increased, the service life of leather is prolonged, the effect of strengthening the strength of the leather can be realized, and a leather product more resists abrasion and wrinkles.
Description
Technical field
The present invention relates to skin technique processed, the more particularly, to processing technology of embossing leather.
Background technology
On market, printed leather is widely used in clothing, footwear material, case and bag, handbag, toy, family property, packing box, artware, dress
The making of the products such as ornaments, the wearability of existing printed leather and color persistence are poor, lead to its quality of item poor, make
The degradation of the manufactured goods of this leather must be adopted.
Content of the invention
The shortcoming that the present invention is directed to poor wearability and color persistence in prior art, there is provided the system of embossing leather
Make technique.
In order to solve above-mentioned technical problem, the present invention is addressed by following technical proposals:
The processing technology of embossing leather, comprises the following steps that
1) by buffing machine, skin base is processed by shot blasting successively；
2) by scalding plate, skin base is once embossed；
3) spray dyestuff to the skin base surface after a stamp；
4) skin dyeing base is carried out drying by 105 °～125 ° of baking oven to heat and continue 40～50 minutes, then will
Skin base is put into the cold room that temperature is -40 °～-50 ° and is carried out IQF 10 minutes, then by skin base put into temperature be 65 ° -
75 ° of casing is heated and is kept 13-15 minute, then is drawn off being cooled to 5 ° -12 ° and keeping 20-35 minute, will lower the temperature
Skin base afterwards is placed in external environment and makes it recover room temperature；
5) to through step 4) skin base carry out secondary dyeing and drying；
6) also include transmission belt, by via step 5) skin base be placed on transmission belt, the top of transmission belt is provided with embossing
Roller, skin base passes through driving the mobile lower section to embossing rollers and carrying out secondary embossing by embossing rollers to it of transmission belt；
7) pass through spray gun and spray back cover agent to skin base；
8) top layer brightening liquid is sprayed to skin base.
Adjusted by the skin base after dyeing is entered with the change of trip temperature, effectively enhance the attachment degree of color, extend skin material
Service life moreover it is possible to play strengthen skin material intensity effect, make leathercraft more wear-resisting crease-resistant.
Also include roller being dried, in step 4) during, after skin base being cooled to 5 ° -12 ° and keeping 20-35 minute
It is dried process by pair of rollers skin base surface is dried.
Preferably, roller is dried having multiple, each is dried roller and is provided with multiple grooves, is provided with grid at the notch of groove
Baffle plate, groove deposits desiccant by forming inner chamber with grid baffle plate and in the lumen.Skin base in rising again is easy to air contact simultaneously
Condense into droplet on its surface, can effectively reduce the wetness on skin base surface by the setting of roller is dried.
Preferably, be dried on roller being equipped with the spaced fire-bar with groove, fire-bar includes bar shaped housing, bar shaped
The outer surface of housing is provided with multiple apertures, is filled with the quick lime meeting water heating in bar shaped housing.Not only may be used by quick lime
To absorb water, heat can also be produced, accelerate rising again of skin base, improve production efficiency.
Preferably, roller is dried there are six, including first being sequentially placed along skin base moving direction be dried roller,
Two are dried roller, the 3rd roller are dried, the 4th roller are dried, the 5th roller and sixth are dried roller is dried, and first is dried roller
On groove be roller axis setting to be dried perpendicular to first, the second groove being dried on roller be parallel with second roller axis are dried
Setting, the 3rd groove being dried on roller turns clockwise after 30 ° parallel to the 3rd axis that roller is dried in perpendicular
Straight line, after the 4th groove being dried on roller is dried axis 30 ° of rotate counterclockwise in perpendicular of roller parallel to the 4th
Straight line, the 5th groove being dried on roller turns clockwise after 60 ° parallel to the 5th axis that roller is dried in perpendicular
Straight line, it is straight after 60 ° of perpendicular rotate counterclockwise that the 6th groove being dried on roller is dried the axis of roller parallel to the 6th
Line.Roller is dried by six grooves being provided with different directions, skin base can be carried out with multiple, omnibearing dried.
Preferably, step 6) in embossing rollers include roller body, the outer surface of roller body is provided with raised embossing, convex
Rise in embossing and be all communicated with resistance wire, accumulator is installed in roller body, accumulator is powered to resistance wire and so that resistance wire is generated heat.
Embossing rollers are provided with resistance wire, during secondary embossing, raised embossing can be heated, improve embossing
Ratio of briquetting, strengthens the effect of embossing.
Preferably, also including the painting material wheel being arranged on embossing rollers side, the outer surface applying material wheel is provided with dyestuff brush
Hair, the lower section applying material wheel is provided with dye cell, and the dye contacts in dyestuff bristle and dye cell simultaneously drive dyestuff in the mistake rotating
It is applied in journey on raised embossing.Three dyeing is realized by the cooperation of dye cell, makes this step realize secondary embossing and three
Secondary dyeing while carry out, effectively strengthen color saturation, prevent dye after skin base be embossed roller impressing after fade or
Color is thin out.
Preferably, the speed adjusting buffing machine is 60 yards/hour.
The present invention, due to employing above technical scheme, has significant technique effect: by entering to the skin base after dyeing
The change of trip temperature is adjusted, and effectively enhances the attachment degree of color, extends the service life of skin material moreover it is possible to play enhancing skin material strong
The effect of degree, makes leathercraft more wear-resisting crease-resistant.
Brief description
Fig. 1 is the structural representation of embossing rollers.
Fig. 2 is that roller array schematic diagram is dried.
Fig. 3 is the 6th structural representation that roller is dried.
Fig. 4 is the structural representation of the groove of Fig. 3.
Fig. 5 is the structural representation of the fire-bar of Fig. 3.
The toponym that in accompanying drawing, each number designation is referred to is as follows: 1 embossing rollers, 2 roller, 3 rollers is dried
Body, 4 accumulator, 5 transmission belts, 21 grooves, 22 fire-bars, 211 grid baffle plates, 221 bar shaped housings, 222 little
Hole, 201 first be dried roller, 202 second be dried roller, 203 the 3rd be dried roller, 204 the 4th be dried roller,
205 the 5th are dried roller, 206 the 6th roller, 31 raised embossings, 32 resistance wires are dried.
Specific embodiment
With embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
The processing technology of embossing leather, comprises the following steps that
1) by buffing machine, skin base is processed by shot blasting successively；
2) by scalding plate, skin base is once embossed；
3) spray dyestuff to the skin base surface after a stamp；
4) skin dyeing base is carried out drying by 110 ° of baking oven to heat and continue 43 minutes, then skin base is put into temperature
Spend the cold room for -43 ° and carry out IQF 10 minutes, then skin base is put into the casing that temperature is 68 ° and heated and protect
Hold 14 minutes, then be drawn off being cooled to 7 ° and keeping 22 minutes, the skin base after cooling is placed in external environment and makes it extensive
Multiple room temperature；
5) to through step 4) skin base carry out secondary dyeing and drying；
6) also include transmission belt 5, by via step 5) skin base be placed on transmission belt 5, the top of transmission belt 5 is provided with pressure
Stricture of vagina roller 1, skin base passes through driving the mobile lower section to embossing rollers 1 and by embossing rollers 1, it being carried out secondary of transmission belt 5
Embossing；
7) pass through spray gun and spray back cover agent to skin base；
8) top layer brightening liquid is sprayed to skin base.
As illustrated, also including roller 2 being dried, in step 4) during, skin base is cooled to 7 ° and keeps 22 points
By roller 2 is dried, process is dried to skin base surface after clock.
Roller 2 is dried six, and each is dried roller 2 and is provided with multiple grooves 21, is provided with grid gear at the notch of groove 21
Plate 211, groove 21 deposits desiccant by forming inner chamber with grid baffle plate 211 and in the lumen, and desiccant is silica-gel desiccant.
It is dried on roller 2 and is equipped with the spaced fire-bar 22 with groove 21, fire-bar 22 includes being attached to roller 2 is dried
The bar shaped housing 221 on surface, the outer surface of bar shaped housing 221 is provided with multiple apertures 222, is filled with chance in bar shaped housing 221
The quick lime of water heating.
Roller 2 is dried six, roller 201, second is dried including first being sequentially placed along skin base moving direction dry
Dry roller the 202, the 3rd is dried roller the 203, the 4th and roller 204, fiveth is dried roller 205 and sixth is dried and roller 206 is dried, and
The groove 21 that one is dried on roller 201 is roller 201 axis setting to be dried perpendicular to first, and second is dried the groove 21 on roller 202
Roller 202 axis setting is dried for parallel with second, the 3rd groove 21 being dried on roller 203 is dried roller 203 parallel to the 3rd
Axis turn clockwise in perpendicular the straight line after 30 °, the 4th groove 21 being dried on roller 204 is dried parallel to the 4th
Straight line after the axis of roller 204 30 ° of rotate counterclockwise in perpendicular, the 5th be dried groove 21 on roller 205 parallel to
5th axis that roller 205 is dried turns clockwise the straight line after 60 ° in perpendicular, and the 6th is dried the groove on roller 206
21 are dried the axis of roller 206 straight line after 60 ° of perpendicular rotate counterclockwise parallel to the 6th.
Step 6) in embossing rollers 1 include roller body 3, the outer surface of roller body 3 is provided with raised embossing 31, raised pressure
All it is communicated with resistance wire 32 in stricture of vagina 31, accumulator 4 is installed in roller body 3, accumulator 4 is powered to resistance wire 32 and made resistance wire
32 heatings.
The speed adjusting buffing machine is 60 yards/hour.
Embodiment 2
Same as Example 1, except that carrying out step 4) during, the skin dyeing base is passed through 110 °
Baking oven carries out drying and heats and continue 43 minutes, then skin base is put into the cold room that temperature is -43 ° carries out 10 points of IQF
Skin base is then put into the casing that temperature is 68 ° and is heated and kept 14 minutes, then is drawn off being cooled to 7 ° and keeping by clock
22 minutes, the skin base after cooling is placed in external environment and makes it recover room temperature
Embodiment 3
Same as Example 1, except that carrying out step 4) during, the skin dyeing base is passed through 120 °
Baking oven carries out drying and heats and continue 43 minutes, then skin base is put into the cold room that temperature is -43 ° carries out 10 points of IQF
Skin base is then put into the casing that temperature is 68 ° and is heated and kept 14 minutes, then is drawn off being cooled to 7 ° and keeping by clock
22 minutes, the skin base after cooling is placed in external environment and makes it recover room temperature.
Embodiment 4
Same as Example 1, except that carrying out step 4) during, the skin dyeing base is passed through 110 °
Baking oven carries out drying and heats and continue 47 minutes, then skin base is put into the cold room that temperature is -43 ° carries out 10 points of IQF
Skin base is then put into the casing that temperature is 68 ° and is heated and kept 14 minutes, then is drawn off being cooled to 7 ° and keeping by clock
22 minutes, the skin base after cooling is placed in external environment and makes it recover room temperature.
Embodiment 5
Same as Example 1, except that carrying out step 4) during, the skin dyeing base is passed through 110 °
Baking oven carries out drying and heats and continue 43 minutes, then skin base is put into the cold room that temperature is -48 ° carries out 10 points of IQF
Skin base is then put into the casing that temperature is 68 ° and is heated and kept 14 minutes, then is drawn off being cooled to 7 ° and keeping by clock
22 minutes, the skin base after cooling is placed in external environment and makes it recover room temperature.
Embodiment 6
Same as Example 1, except that carrying out step 4) during, the skin dyeing base is passed through 110 °
Baking oven carries out drying and heats and continue 43 minutes, then skin base is put into the cold room that temperature is -43 ° carries out 10 points of IQF
Skin base is then put into the casing that temperature is 73 ° and is heated and kept 14 minutes, then is drawn off being cooled to 7 ° and keeping by clock
22 minutes, the skin base after cooling is placed in external environment and makes it recover room temperature.
Embodiment 7
Same as Example 1, except that carrying out step 4) during, the skin dyeing base is passed through 110 °
Baking oven carries out drying and heats and continue 43 minutes, then skin base is put into the cold room that temperature is -43 ° carries out 10 points of IQF
Skin base is then put into the casing that temperature is 68 ° and is heated and kept 14 minutes, then is drawn off being cooled to 10 ° and protecting by clock
Hold 22 minutes, the skin base after cooling is placed in external environment and makes it recover room temperature.
In a word, the foregoing is only presently preferred embodiments of the present invention, all equalizations made according to scope of the present invention patent
Change and modification, all should belong to the covering scope of patent of the present invention.
Claims (7)
1. embossing leather processing technology it is characterised in that: comprise the following steps that
1) by buffing machine, skin base is processed by shot blasting successively；
2) by scalding plate, skin base is once embossed；
3) spray dyestuff to the skin base surface after a stamp；
4) skin dyeing base is carried out drying by 105 °～125 ° of baking oven to heat and continue 40～50 minutes, then by skin base
Put into the cold room that temperature is -40 °～-50 ° and carry out IQF 10 minutes, then skin base being put into temperature is 65 ° -75 °
Casing is heated and is kept 13-15 minute, then is drawn off being cooled to 5 ° -12 ° and keeping 20-35 minute, after cooling
Skin base is placed in external environment and makes it recover room temperature；
5) to through step 4) skin base carry out secondary dyeing and drying；
6) also include transmission belt (5), by via step 5) skin base be placed on transmission belt (5), the top of transmission belt (5) is provided with
Embossing rollers (1), by the lower section of the drive movement of transmission belt (5) to embossing rollers (1) and to pass through embossing rollers (1) right for skin base
It carries out secondary embossing；
7) pass through spray gun and spray back cover agent to skin base；
8) top layer brightening liquid is sprayed to skin base.
2. embossing leather according to claim 1 processing technology it is characterised in that: also include roller (2) being dried, in step
During rapid 4), by roller (2) is dried, skin base surface is entered after skin base being cooled to 5 ° -12 ° and keeps 20-35 minute
Row dried.
3. embossing leather according to claim 2 processing technology it is characterised in that: be dried roller (2) have multiple, each
Roller (2) is dried and is provided with multiple grooves (21), grid baffle plate (211) is installed at the notch of groove (21), groove (21) by with net
Lattice baffle plate (211) forms inner chamber and deposits desiccant in the lumen.
4. embossing leather according to claim 2 processing technology it is characterised in that: be dried on roller (2) be equipped with
The spaced fire-bar of groove (21) (22), fire-bar (22) includes being attached to the bar shaped housing that roller (2) surface is dried
(221), the outer surface of bar shaped housing (221) is provided with multiple apertures (222), is filled with chance water heating in bar shaped housing (221)
Quick lime.
5. embossing leather according to claim 2 processing technology it is characterised in that: roller (2) is dried six, including
Roller (201) is dried, second roller (202) is dried, the 3rd roller is dried along skin base moving direction is sequentially placed first
(203), the 4th roller (204) is dried, the 5th roller (205) and sixth is dried roller (206) is dried, first is dried roller
(201) groove (21) on is roller (201) axis setting to be dried perpendicular to first, and second is dried the groove (21) on roller (202)
Roller (202) axis setting is dried for parallel with second, the 3rd groove (21) being dried on roller (203) is dried rolling parallel to the 3rd
The axis of wheel (203) turns clockwise the straight line after 30 ° in perpendicular, and the 4th groove (21) being dried on roller (204) is put down
Straight line after the 4th axis 30 ° of rotate counterclockwise in perpendicular that roller (204) is dried for the row, the 5th is dried roller
(205) groove (21) on turns clockwise straight after 60 ° in perpendicular parallel to the 5th axis that roller (205) is dried
Line, the groove (21) that the 6th is dried on roller (206) revolves in perpendicular counterclockwise parallel to the 6th axis that roller (206) is dried
Straight line after turning 60 °.
6. embossing leather according to claim 1 processing technology it is characterised in that: step 6) in embossing rollers (1)
Including roller body (3), the outer surface of roller body (3) is provided with raised embossing (31), is all communicated with resistance in raised embossing (31)
Silk (32), is provided with accumulator (4) in roller body (3), accumulator (4) is powered to resistance wire (32) and so that resistance wire (32) is sent out
Heat.
7. embossing leather according to claim 1 processing technology it is characterised in that: adjust buffing machine speed be 60
Code/hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766039.3A CN106367542B (en) | 2016-08-29 | 2016-08-29 | The manufacture craft of embossing leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766039.3A CN106367542B (en) | 2016-08-29 | 2016-08-29 | The manufacture craft of embossing leather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106367542A true CN106367542A (en) | 2017-02-01 |
| CN106367542B CN106367542B (en) | 2019-04-12 |
Family
ID=57901467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610766039.3A Active CN106367542B (en) | 2016-08-29 | 2016-08-29 | The manufacture craft of embossing leather |
Country Status (1)
| Country | Link |
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| CN (1) | CN106367542B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277666A (en) * | 2018-01-23 | 2018-07-13 | 温州晨日科技有限公司 | A kind of leather surface printing technology |
| CN108559799A (en) * | 2018-04-10 | 2018-09-21 | 杭州皮克新材料科技有限公司 | A kind of science and technology skin production technology |
| CN112776527A (en) * | 2021-01-22 | 2021-05-11 | 石家庄星博皮革制品有限公司 | Production process of cowhide decorative picture |
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| GB565029A (en) * | 1942-04-01 | 1944-10-24 | American Cyanamid Co | Process for dyeing of suede leather |
| JPS6399914A (en) * | 1986-04-30 | 1988-05-02 | Ain Eng Kk | Leatherlike molding |
| CN101368340A (en) * | 2008-10-14 | 2009-02-18 | 陕西科技大学 | Final finishing technique for superfine fibre chemical leather |
| CN102493235A (en) * | 2011-12-08 | 2012-06-13 | 江南大学 | Method for improving dyeing performance of dead cotton |
| CN103436643A (en) * | 2013-06-07 | 2013-12-11 | 武汉工程大学 | Environment-friendly leather-producing process by using sturgeon skins |
| CN103525957A (en) * | 2013-10-21 | 2014-01-22 | 晋江市香江皮革有限公司 | Production method of wear-resistant leather |
| CN103882734A (en) * | 2014-02-26 | 2014-06-25 | 陆玉萍 | Improved cotton fabric printing process |
| CN103898254A (en) * | 2014-03-14 | 2014-07-02 | 际华三五一四制革制鞋有限公司 | Method for finishing leather imitating calfskin style |
| CN105803816A (en) * | 2016-05-25 | 2016-07-27 | 山东同大海岛新材料股份有限公司 | Preparation method of easy-dyeing microfiber leather |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB565029A (en) * | 1942-04-01 | 1944-10-24 | American Cyanamid Co | Process for dyeing of suede leather |
| JPS6399914A (en) * | 1986-04-30 | 1988-05-02 | Ain Eng Kk | Leatherlike molding |
| CN101368340A (en) * | 2008-10-14 | 2009-02-18 | 陕西科技大学 | Final finishing technique for superfine fibre chemical leather |
| CN102493235A (en) * | 2011-12-08 | 2012-06-13 | 江南大学 | Method for improving dyeing performance of dead cotton |
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| CN103525957A (en) * | 2013-10-21 | 2014-01-22 | 晋江市香江皮革有限公司 | Production method of wear-resistant leather |
| CN103882734A (en) * | 2014-02-26 | 2014-06-25 | 陆玉萍 | Improved cotton fabric printing process |
| CN103898254A (en) * | 2014-03-14 | 2014-07-02 | 际华三五一四制革制鞋有限公司 | Method for finishing leather imitating calfskin style |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277666A (en) * | 2018-01-23 | 2018-07-13 | 温州晨日科技有限公司 | A kind of leather surface printing technology |
| CN108559799A (en) * | 2018-04-10 | 2018-09-21 | 杭州皮克新材料科技有限公司 | A kind of science and technology skin production technology |
| CN112776527A (en) * | 2021-01-22 | 2021-05-11 | 石家庄星博皮革制品有限公司 | Production process of cowhide decorative picture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106367542B (en) | 2019-04-12 |
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