CN1272570A - Method for producing high moisture and air permeability and high water repellency polyurethane PU leather by using dry transfer coating process and its product - Google Patents
Method for producing high moisture and air permeability and high water repellency polyurethane PU leather by using dry transfer coating process and its product Download PDFInfo
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- CN1272570A CN1272570A CN 00105613 CN00105613A CN1272570A CN 1272570 A CN1272570 A CN 1272570A CN 00105613 CN00105613 CN 00105613 CN 00105613 A CN00105613 A CN 00105613A CN 1272570 A CN1272570 A CN 1272570A
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Abstract
The present invention discloses a dry transfer coating process to produce high moisture permeability and high air permeability and water-dispelling property polyurethane PU surface layer and its products. Said invention includes the following steps: utilizing transfer coating process to implement front working to form various lines, when the front working is implemented, the PU surface layer is divided into two coating layers, first PU surface layer is characterized by that the scratch-proof and strong solvent resistant polyurethane PU is filled into the dimpled grain of transfer paper, and then the weak solvent polyurethane PU is coated on it to implement secondary coating layer, and its after-working process is characterized by using strong dissolution of strong solvent dimethyl formamide (DMF) to make second PU surface layer produce more and dense air pores and do not damage the pattern of first PU surface layer. It not only retains the transfer pattern completely, but also raises its water-proofing property.
Description
The present invention relates to the manufacture method of the synthetic skin of PU, refer to especially a kind ofly produce the polyurethane PU leather method of high moisture-penetrable ventilated property and water-repellancy with dry transfer coating process, and the made finished product of method thus.
The method for making of the synthetic skin of PU generally is divided into dry type method for making and wet type method for making, because of its employed raw material difference, so it is poor the solvent in the PU resin to pass through washing in manufacture process, through water and solvent after displacement is solidified mutually again the mode through washing be the wet type method for making, otherwise as do not need through washing poor washing, only the solvent drying mode in the PU resin is called the dry type method for making, and it is wherein more time-consuming because of the wet type method for making, equipment cost is also comparatively high, but quality of being produced such as moisture-penetrable ventilated property are also preferable, so being generally quality goods adopts, though reviewing the dry type method for making can reduce the cost, but do not have suitable quality, will make it only be used for can't promoting on the general goods, so the moisture-penetrable ventilated property of how taking into account the low-cost of dry type method for making and reaching the wet type method for making also seems especially important, especially in dog-eat-dog now, be to be instant action under the requirement that everything makes every effort to reduce cost, thus the dry type method for making is improved, at present to be divided into two kinds in the dry type method for making:
One, the direct rubbing method of dry type:
It is to use polyurethane PU surface layer 20 directly to be coated on the base cloth, its flow process as shown in Figure 1, this base cloth 10 can be knitted cloth, Nonwovens (nonwoven fabric) or is the cloth that interweaves, so can on base cloth 10, form the film that one deck has small hole, its cross section generally be applicable on the ready-made clothes because of its thinner thickness can reach below the 0.5mm, and poisture-penetrability is about 1500～2000g/SQM.D as shown in Figure 2, precisely because the surface can't form suitable lines, to satisfy different hobby demands.
Two, be see through transcription its flow process of mode as shown in Figure 3, the surface layer 20 that will contain polyurethane PU is coated and is utilized solid 30 on the release liners 1 behind the drying W, make it and base cloth 10 applying P, row oven dry W handles again, batch R at last, cross section after it is finished as shown in Figure 4, this base cloth can be Nonwovens (nonwoven fabric), cloth or knitted cloth interweave, and the material rate of each coating layer as shown in Table 1, wherein the coating weight of surface layer is 120g/y, and the coating weight of solid is 250g/y～300g/y, utilizes the transcription mode with the synthetic skin of this PU that finishes, and the lines transfer printing on the release liners is on the PU surface layer, so can select suitable release liners with customer demand, and its thickness directly rubbing method is thick, is about 0.8～1.0mm and is applicable to the footwear material, ready-made clothes, on sports equipment and the furniture, and its moisture-penetrable ventilated property also reduces and is about 650g/SQM.D.
Table one
Annotate: polyurethane PU: comprise various hydrophobicitys, hydrophily, polyalcohols raw material, various diisocyanates, ammonia and pure generic key prolong agent.
Solvent: be dimethyl formamide (DMF) or methyl ethyl ketone (MEK) or toluene (TOL) or ethyl acetate (EAC) isopropyl alcohol (I.P.A).
Colorant: PU mixes toner, the color of well-formedness.
Auxiliary agent: anti-stick auxiliary agent, optical haze auxiliary agent, feel are adjusted cured dose.
In sum, transcription formula rubbing method can select for use suitable release liners to produce the different surfaces decorative pattern, be its main characteristic, precisely because moisture-penetrable ventilated property can't be as the excellent benefit of performance as the direct rubbing method because of the factor of coating solid, no matter and be directly to be coated with or transcription formula rubbing method, polyurethane PU on its surface layer only has quite a small amount of, and extremely fine pore can't make breathable moisture permeability reach the standard of expection.
At the deficiencies in the prior art, main purpose of the present invention is to provide a kind of polyurethane PU leather method and goods thereof that produce high moisture-penetrable ventilated property and water-repellancy with dry transfer coating process, can improve the low moisture-penetrable ventilated property of dry transfer formula rubbing method and keep complete transfer pattern, and increase its surperficial water-repellancy to promote its water proofing property.
The object of the present invention is achieved like this: a kind of high saturating wet with the dry transfer coating process generation, the polyurethane PU leather method of gas permeability and water-repellancy, it is characterized in that this method is to utilize the dry transfer coating method to process as leading portion, cooperate the half tone surface treatment of back segment processing, make it can possess complete transfer pattern and can reach high moisture-penetrable ventilated and drying effect again, wherein leading portion processing mainly is to see through the transcription mode with the ground floor scratch resistance, the polyurethane PU fluid,matching of anti-strong solvent is coated on the release liners, and finish a PU surface layer after only being filled in decorative pattern recess drying, be coated with the back oven dry on ground floor of second layer Weak solvent polyurethane PU fluid,matching again and finish the 2nd PU surface layer, and utilize solid to make it and the base cloth leading portion processing of finishing dealing with of row oven dry again of fitting; The processing of this back segment is to make its viscosity Control in 100+-30 C.P.S/25 ℃ with containing 10～20% the polyurethane PU and the fluid,matching of 90～80% strong solvents again, and roll printing is on the leading portion product processed, surface treatment as front page, make its 2nd PU surface layer produce intensive and big slightly small pore, and drying is to increase its moisture-penetrable ventilated property, this moment, the one PU surface layer was scratch resistance, the polyurethane PU of anti-strong solvent forms, so can not increase pore again, and the complete decorative pattern that produces can keep transfer printing the time, the then same roller that utilizes with mesh, to contain the solvent of fluorine 1～5% and 99～95% and viscosity Control after 70～50 C.P.S/25 ℃ fluid,matching is done identical roll printing, drying is with the surface treatment as second edition, make fluorine permeate in first, between the 2nd PU surface layer and the base cloth, reach the surface and have the drying function, prevent that the globule is stained with sticking and then infiltrates WATER REPELLENT TREATMENT in the pore, last again via roller with mesh, to contain antiplastering aid, feel is adjusted cured dose, the polyurethane solvent fluid,matching roll printing of optical haze auxiliary agent etc. is finished third edition surface treatment on it, the row oven dry is to increase the comfort of cladding own again, texture is so finished the polyurethane PU leather product that produce high moisture-penetrable ventilated property and water-repellancy with dry transfer coating process.
Feature of the present invention also is: the fluid,matching in the back segment processing during front page roll printing, strong solvent wherein is to be dimethyl formamide (DMF).
It is to utilize pointed painting cloth-knife during leading portion processing is carried out first road coating, and its coating weight is controlled between 30～60g/y, and it is to utilize circular painting cloth-knife during the coating of second road, and its coating weight is controlled between 120～150g/y.
Back segment adds front page in man-hour, second edition, third edition coating weight and is 30～60g/y, and its bake out temperature is 140～150 ℃ and kept 2-3 minute.
By the made polyurethane PU leather product of said method, it is characterized in that comprising successively from inside to outside base material, the 2nd PU surface layer, a PU surface layer, the one PU surface layer is formed with the transfer printing lines, the 2nd PU surface layer is formed with intensive small perforation pore, utilizes the agent of sticking work to fit together between base material and the 2nd PU surface layer.
Main feature of the present invention is:
(1) utilize the transcription rubbing method to finish leading portion processing, to form various lines, cooperate back segment to be machined in the PU surface layer and produce more more intensive pores, lines is unlikely to wreck in the back segment processing in order to keep, event adds in leading portion and man-hour the PU surface layer is divided into the coating of two roads, and its PU surface layer is by scratch resistance, the polyurethane PU of anti-strong solvent is filled in the dimpled grain of autogtaphic printing paper, the coating of row second road makes coating Weak solvent polyurethane PU on it again, after removing release liners, carry out the strong solubility of the dimethyl formamide (DMF) of back segment processing and utilization strong solvent, make the 2nd PU surface layer produce quite intensive and many pores, and unlikely the wrecking of decorative pattern that a PU surface layer transfer printing goes out.
(2) promoted the moisture-penetrable ventilated property that formed PU synthesizes skin in the dry transfer rubbing method, utilization has the roller of mesh, the strong solvent fluid,matching roll printing that will contain 10～20% polyurethane PU and contain dimethyl formamide (DMF) makes it produce more as the row oven dry again of cellular pore in the 2nd PU surface layer on the synthetic skin of the PU that finishes the dry transfer rubbing method.
(3) promote the water proofing property that PU synthesizes skin, to contain 1～5% the fluid,matching that contains fluorous solvent again finishes on the synthetic skin of above-mentioned surface-treated PU by the roller roll printing with mesh, make its surface go up the function that forms the nature drying, avoid water droplet to be stained with sticking and the phenomenon of infiltration is arranged, promote its fire resistance characteristic with it.
(4) promote the texture of the synthetic skin of PU, utilize at last, will contain fluid,matching roll printing that feel adjusts cured dose, antiplastering aid, optical haze auxiliary agent etc. on it, the texture of product is promoted again by the roller of tool mesh.
Following conjunction with figs. further elaborates the present invention.
Fig. 1 is the flow chart of the direct rubbing method of known dry type.
Fig. 2 is the cross section schematic diagram of the direct rubbing method goods of known dry type.
Fig. 3 is the flow chart of known dry transfer rubbing method.
Fig. 4 is the cross section schematic diagram of known dry transfer rubbing method goods.
Fig. 5 is the schematic flow sheet of leading portion processing of the present invention.
Fig. 5-1 processes a PU surface layer for leading portion of the present invention and takes shape in sectional drawing on the release liners.
Fig. 5-2 processes sectional drawing after the 2nd PU surface layer moulding for leading portion of the present invention.
Sectional drawing after Fig. 5-3 removes release liners after for leading portion of the present invention processing.
Fig. 5-4 imposes the sectional drawing after the front page surface treatment in the back segment processing for the present invention.
Fig. 5-5 is the formed product sectional drawing of finishing in back segment processing back of the present invention.
Fig. 6 makes the surface-treated schematic flow sheet for back segment of the present invention with the web plate roller.
The present invention is polyurethane PU leather method and the goods thereof that produce high moisture-penetrable ventilated property and water-repellancy with dry transfer coating process, mainly process as leading portion with the dry transfer coating method, the half tone surface treatment of cooperation back segment makes reaches high moisture-penetrable ventilated goods, it is to see through the transcription mode polyurethane PU is coated the processing of release liners leading portion, wherein to add the polyurethane PU of man-hour coating be to be divided into two roads coating constructions (seeing also shown in Figure 5) to this leading portion, when being coated with in first road is with scratch resistance, the polyurethane PU fluid,matching 221 of anti-strong solvent is coated on the release liners 1, and only be filled in the recess (shown in Fig. 5-1) of decorative pattern, drying W makes its decorative pattern that produces transfer printing to form a PU surface layer 22, carry out second road coating and drying W to finish the 2nd PU surface layer 24 with Weak solvent polyurethane PU fluid,matching 241 again, formed the 2nd PU surface layer (shown in Fig. 5-2), utilize solid 30 to make it and base cloth 10 applying P the article after the leading portion processing again, row is dried W again, batch R, finished product removes the section of release liners 1 back formation shown in Fig. 5-3, and impose back segment and process its flow process and please refer to Fig. 6, it is via the roller 40 with mesh with the synthetic skin of the PU after the leading portion processing, the rubber wheel 42 that cooperates its top, front page A fluid,matching 44 roll printings that will contain 10～20% polyurethane and strong solvent are on it, wherein this strong solvent can be dimethylformamide (DMF), make strong solvent can make the 2nd PU surface layer 24 produce how intensive and bigger small pore (shown in Fig. 5-4), the one PU surface layer 22 reason scratch resistances this moment, the polyurethane PU fluid,matching 221 of anti-strong solvent forms, can not be subjected to the destruction of strong solvent, can keep the decorative pattern of its transfer printing, make it dry W again via baking zone, to finish the surface treatment of front page A such as screen painting, and above-mentioned front page fluid,matching 44, be to mix with strong solvent by polyurethane PU, make its ratio be about 10～20% and 80～90%, viscosity is controlled by polyurethane PU maintains in 100+-30C.P.S/25 ℃ it, then also utilize roller 50 to cooperate the rubber wheel 52 of its top with mesh, the solvent that will contain 1～5% fluorine and 99～95%, and viscosity Control is at 70～50C.P.S/25 ℃ fluid,matching 54 roll printings row oven dry W again on it, to finish the surface treatment of second edition B such as screen painting, the fluorine element is permeated between the polyurethane PU and base cloth 10 of a PU surface layer 22 and the 2nd PU surface layer 24, reach the effect of drying, in case water droplet is stained with the sticking phenomenon of osmosis that causes, improve good waterproof effect, as for 64 roll printings of third edition C fluid,matching on it, row is dried the W program again, and finish the surface treatment of the third edition such as screen painting, batch R at last, finish whole processing procedure of the present invention simultaneously, wherein third edition fluid,matching 64 is to add solvent by polyurethane PU, auxiliary agent is (as antiplastering aid, feel is adjusted cured dose, optical haze auxiliary agent etc.) mix stirring, its ratio is about 10～20%, 70～80% and 2～10% and viscosity Control between 150～50 C.P.S/25 ℃, when first road that carries out in the leading portion processing of the present invention is coated with, it is to utilize pointed painting cloth-knife that its coating weight is controlled between 30～60g/y, and it is to utilize circular painting cloth-knife second road when coating, its coating weight is controlled between 120～150g/y, front page A in the back segment processing of the present invention, second edition B, during third edition C roll printing, its coating weight is 30g～60g/y, and its bake out temperature is between 140～150 ℃, continue 2-3 minute, utilize its cross section of finished product that the present invention makes shown in Fig. 5-5, the aqueous vapor 80 of human body H is discharged extraneous via the formed intensive and big slightly small pore of front page surface treatment easily, its moisture permeability can reach 3500g/SQM.D, and the extraneous globule 70 will be pushed aside it by second edition surface-treated fluorine element, avoid it to be stained with the phenomenon of staying sticking work and producing the infiltration pore, reach the purpose of complete waterproof.
In sum, the present invention really can improve the shortcoming of present dry type method for making, make its surface can have various lines concurrently to satisfy popular demand, and do not lose the effect of its moisture-penetrable ventilated property again, significantly improve the shortcoming of existing common technology, real be a kind of fine piece of writing that has progressive, and the present invention do not see publication or public use, so mere formality proposition application for a patent for invention in accordance with the law.
Claims (5)
1, a kind of high saturating wet with the dry transfer coating process generation, the polyurethane PU leather method of gas permeability and water-repellancy, it is characterized in that this method is to utilize the dry transfer coating method to process as leading portion, cooperate the half tone surface treatment of back segment processing, make it can possess complete transfer pattern and can reach high moisture-penetrable ventilated and drying effect again, wherein leading portion processing mainly is to see through the transcription mode with the ground floor scratch resistance, the polyurethane PU fluid,matching of anti-strong solvent is coated on the release liners, and finish a PU surface layer after only being filled in decorative pattern recess drying, be coated with the back oven dry on ground floor of second layer Weak solvent polyurethane PU fluid,matching again and finish the 2nd PU surface layer, and utilize solid to make it and the base cloth leading portion processing of finishing dealing with of row oven dry again of fitting; The processing of this back segment is to make its viscosity Control in 100+-30 C.P.S/25 ℃ with containing 10～20% the polyurethane PU and the fluid,matching of 90～80% strong solvents again, and roll printing is on the leading portion product processed, surface treatment as front page, make its 2nd PU surface layer produce intensive and big slightly small pore, and drying is to increase its moisture-penetrable ventilated property, this moment, the one PU surface layer was scratch resistance, the polyurethane PU of anti-strong solvent forms, so can not increase pore again, and the complete decorative pattern that produces can keep transfer printing the time, the then same roller that utilizes with mesh, to contain the solvent of fluorine 1～5% and 99～95% and viscosity Control after 70～50 C.P.S/25 ℃ fluid,matching is done identical roll printing, drying is with the surface treatment as second edition, make fluorine permeate in first, between the 2nd PU surface layer and the base cloth, reach the surface and have the drying function, prevent that the globule is stained with sticking and then infiltrates WATER REPELLENT TREATMENT in the pore, last again via roller with mesh, to contain antiplastering aid, feel is adjusted cured dose, the polyurethane solvent fluid,matching roll printing of optical haze auxiliary agent etc. is finished third edition surface treatment on it, the polyurethane PU leather product that produce high moisture-penetrable ventilated property and water-repellancy with dry transfer coating process are so finished in row oven dry again.
2, as claimed in claim 1ly produce the polyurethane PU leather method of high saturating wet, gas permeability and water-repellancy with dry transfer coating process, it is characterized in that: the fluid,matching in the back segment processing during front page roll printing, strong solvent wherein is to be dimethyl formamide (DMF).
3, the polyurethane PU leather method that produces high saturating wet, gas permeability and water-repellancy with dry transfer coating process as claimed in claim 1, it is characterized in that: it was to utilize pointed painting cloth-knife when first road that leading portion processing is carried out was coated with, its coating weight is controlled between 30～60g/y, and it is to utilize circular painting cloth-knife second road when coating, and its coating weight is controlled between 120～150g/y.
4, the polyurethane PU leather method that produces high saturating wet, gas permeability and water-repellancy with dry transfer coating process as claimed in claim 1, it is characterized in that: back segment adds front page in man-hour, second edition, third edition coating weight and is 30～60g/y, and its bake out temperature is 140～150 ℃ and kept 2-3 minute.
5, a kind of polyurethane PU leather product of making by the described method of claim 1, it is characterized in that comprising successively from inside to outside base material (10), the 2nd PU surface layer (24), a PU surface layer (22), the one PU surface layer (22) is formed with the transfer printing lines, the 2nd PU surface layer (24) is formed with intensive small perforation pore (90), utilizes sticking work agent (30) to fit together between base material (10) and the 2nd PU surface layer (24).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00105613 CN1272570A (en) | 2000-04-11 | 2000-04-11 | Method for producing high moisture and air permeability and high water repellency polyurethane PU leather by using dry transfer coating process and its product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00105613 CN1272570A (en) | 2000-04-11 | 2000-04-11 | Method for producing high moisture and air permeability and high water repellency polyurethane PU leather by using dry transfer coating process and its product |
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| CN1272570A true CN1272570A (en) | 2000-11-08 |
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| CN 00105613 Pending CN1272570A (en) | 2000-04-11 | 2000-04-11 | Method for producing high moisture and air permeability and high water repellency polyurethane PU leather by using dry transfer coating process and its product |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316118C (en) * | 2003-09-09 | 2007-05-16 | 三芳化学工业股份有限公司 | Artificial leather and manufacturing process thereof |
| CN102877321A (en) * | 2012-09-28 | 2013-01-16 | 浙江拓空实业有限公司 | Coating method of two-component polyurethane synthetic leather and coating machine special for two-component polyurethane synthetic leather |
| CN103774472A (en) * | 2014-01-14 | 2014-05-07 | 浙江港龙织造科技有限公司 | Dissolving printing technique of elastic fiber fabric |
| CN103774473A (en) * | 2014-01-14 | 2014-05-07 | 浙江港龙织造科技有限公司 | Elastic fiber dissolved fabric |
| CN105926305A (en) * | 2016-07-09 | 2016-09-07 | 江苏连港皮革机械有限公司 | Artificial leather and synthetic leather roller painting and wiping machine |
| CN105970661A (en) * | 2016-07-20 | 2016-09-28 | 陕西科技大学 | Production method for super-hydrophobic superfine fiber synthetic leather |
| CN107447538A (en) * | 2017-08-18 | 2017-12-08 | 天守(福建)超纤科技股份有限公司 | A kind of preparation method of only water dry method Trademark leather |
| CN111051607A (en) * | 2018-08-13 | 2020-04-21 | 正山国际有限公司 | Artificial leather having excellent air permeability and method for manufacturing same |
-
2000
- 2000-04-11 CN CN 00105613 patent/CN1272570A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316118C (en) * | 2003-09-09 | 2007-05-16 | 三芳化学工业股份有限公司 | Artificial leather and manufacturing process thereof |
| CN102877321A (en) * | 2012-09-28 | 2013-01-16 | 浙江拓空实业有限公司 | Coating method of two-component polyurethane synthetic leather and coating machine special for two-component polyurethane synthetic leather |
| CN102877321B (en) * | 2012-09-28 | 2014-06-25 | 浙江拓空实业有限公司 | Coating method of two-component polyurethane synthetic leather and coating machine special for two-component polyurethane synthetic leather |
| CN103774472A (en) * | 2014-01-14 | 2014-05-07 | 浙江港龙织造科技有限公司 | Dissolving printing technique of elastic fiber fabric |
| CN103774473A (en) * | 2014-01-14 | 2014-05-07 | 浙江港龙织造科技有限公司 | Elastic fiber dissolved fabric |
| CN103774473B (en) * | 2014-01-14 | 2016-01-27 | 浙江港龙织造科技有限公司 | Elastomer dissolves fabric |
| CN105926305A (en) * | 2016-07-09 | 2016-09-07 | 江苏连港皮革机械有限公司 | Artificial leather and synthetic leather roller painting and wiping machine |
| CN105970661A (en) * | 2016-07-20 | 2016-09-28 | 陕西科技大学 | Production method for super-hydrophobic superfine fiber synthetic leather |
| CN105970661B (en) * | 2016-07-20 | 2017-12-22 | 陕西科技大学 | A kind of production method of super-hydrophobic superfine fiber chemical leather |
| CN107447538A (en) * | 2017-08-18 | 2017-12-08 | 天守(福建)超纤科技股份有限公司 | A kind of preparation method of only water dry method Trademark leather |
| CN111051607A (en) * | 2018-08-13 | 2020-04-21 | 正山国际有限公司 | Artificial leather having excellent air permeability and method for manufacturing same |
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