CN102816467B - Release paint for artificial leather and release paper prepared by utilizing release paint - Google Patents
Release paint for artificial leather and release paper prepared by utilizing release paint Download PDFInfo
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- CN102816467B CN102816467B CN201210301703.9A CN201210301703A CN102816467B CN 102816467 B CN102816467 B CN 102816467B CN 201210301703 A CN201210301703 A CN 201210301703A CN 102816467 B CN102816467 B CN 102816467B
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- release
- release coating
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- grain fraction
- artificial leather
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Abstract
The invention discloses release paint for artificial leather and release paper prepared by utilizing the release paint. The release paint comprises particle components, an average particle size of each particle component is 20-500mum; and the release paper consists of base paper and a bottom coating layer and a release coating layer which are subsequently attached on one side of the base paper surface, the release coating layer is formed by consolidation after being coated with the release paint comprising the particle components, and an average particle size of each particle component is larger than a thickness of the release coating layer. By the adoption of the release paint for artificial leather and the release paper prepared by utilizing the release paint, since irregular distributing bulges are formed on the release coating layer surface of the particle components, irregular distributing pores are correspondingly formed on the artificial leather surface manufactured by utilizing the release paper, higher simulation effects are provided, and the sense of rigidity caused by manual splicing decorative patterns is avoided.
Description
Technical field
The present invention relates to leatheroid processing and manufacturing field, the separate-type paper being specifically related to a kind of release coating used for artificial leather and utilizing this release coating to prepare.
Background technology
Separate-type paper, also known as interleaving paper, is that one both can prevent prepreg adhesion, can protect again the not contaminated separate paper of prepreg.
The separate-type paper of producing for leatheroid belongs to coating separate paper, is the carrier and the temporary formwork that manufacture polyurethane artificial leather (PU leather) and artificial polyvinyl chloride leather (PVC leather).Separate-type paper has bilayer structure usually: the first layer is the body paper as base material, and the second layer is release dope layer.General manufacture method first applies one deck undercoat on body paper, for reducing the infiltration of release coating, then is coated with release coating, embossing solidifying, undercoat is formed release coating.Release system component, composite and curing technology are the keys manufacturing such separate-type paper.Conventional curing mainly contains visible-light curing, ultraviolet curing and electrocuring.
Application number be the disclosure of the invention of 200510075370.2 a kind of separated coating film and production method thereof, the release dope layer applied by base material and substrate surface is formed, it is characterized in that, described base material is plastics film, described release dope layer is by solvent-type organosilicon paint and dry and solidify to form, described solvent-type organosilicon coating is become by the preparation of raw material containing following weight content: silicone resin coating 10-70%, organic solvent 29.5-89.5%, catalyzer 0.03-0.1%, Anchor Agent 0.03-0.1%, bridging agent 0.1-0.7%.
Application number a kind of synthetic leather separate-type paper that has been the disclosure of the invention of 200810079831.7, it arranges a Multifunctional layered between base material and release coating, and the component of described Multifunctional layered and parts by weight thereof are: tackiness agent 40 ~ 95; Water 5 ~ 60; Tensio-active agent 1 ~ 5; The formation material of described release layer comprises alkyd modified silicone resin, melamine resin and acid catalyst.
Application number a kind of release paper for artificial leather that has been the disclosure of the invention of 200910193086.3 and preparation method thereof and application, by water-dispersed resin, waterborne curing agent, defoamer and water are mixed, obtain aqueous dispersion type parting agent layer coating material, be coated on neutral sizing, obtained described release paper for artificial leather.
In prior art, the decorative pattern (in the present invention if no special instructions, described decorative pattern all refers in particular to the decorative pattern of imitative natural leather) on the grain roller used of the embossed cotton in leatheroid manufacturing processed determines the picture on surface of the release coating of separate-type paper.Decorative pattern on grain roller generally imitates natural leather design, first design fritter decorative pattern (such as imitating the projection of pore), bulk decorative pattern is spliced to form by fritter decorative pattern, two pieces little decorative pattern stitching portions are unavoidably left easily by the splicing vestige discovered, cause the leatheroid surface pore skewness made thus, texture is stiff, affects simulated effect.
Summary of the invention
The separate-type paper that the invention provides a kind of release coating used for artificial leather and utilize this release coating to prepare, the leatheroid utilizing this separate-type paper to produce has the pore form and distribution that are similar to natural leather, makes the compacting decorative pattern simulated effect on leatheroid better simultaneously.
A kind of release coating used for artificial leather, containing grain fraction in described release coating, the median size of described grain fraction is 20 ~ 500 μm.
Described grain fraction is the material having almost spherical and have certain rigidity, do not dissolve in release coating, for the formation of the pore structure on artificial leather surface, the median size of described grain fraction determine utilize this release coating to prepare artificial leather surface on the size of pore, can need according to different leatheroids, select the grain fraction of different-grain diameter, form the pore of different size.
Prepare described release coating and can adopt prior art, at room temperature, grain fraction is added by a certain percentage of the weight in the release coating used in prior art, mixing and stirring, high speed dispersion or emulsification can be carried out if desired, impel soluble solids components dissolved, obtain the homogeneous release coating containing grain fraction.
When using this to contain the release coating of grain fraction, for avoiding the precipitation of grain fraction, should keep ceaselessly stirring, grain fraction in coating is uniformly distributed all the time.
In order to increase the simulated effect of artificial leather surface, the median size of described grain fraction should be close with natural leather pore size, and preferably, the median size of described grain fraction is 30 ~ 250 μm.Further preferably, the median size of described grain fraction is 50 ~ 100 μm.
If do not have specified otherwise, median size of the present invention refers to number average bead diameter.
As preferably, described grain fraction weight accounts for 0.01 ~ 0.1% of release coating gross weight.
With the total weight of release coating, the weight percent of described grain fraction is 0.01 ~ 0.1%.The weight percent of described grain fraction determines the density of pore distribution, the weight percent of grain fraction is larger, then corresponding pore distribution is more intensive, the weight percent of grain fraction is less, then pore distribution is more sparse, and in order to make the simulated effect of the leatheroid produced better, namely pore distribution is closer to natural leather, preferably, described grain fraction weight accounts for 0.2 ~ 10% of release coating gross weight.
As preferably, described grain fraction is at least one in powder emery, steel sand, granulated glass sphere, aluminium pill, resin sand, plastics sand, walnut sand, aluminum oxide, cerium oxide or zirconium white.
Described grain fraction need keep original form in leatheroid manufacturing processed, forms the pore structure on leatheroid surface, can only use a kind of grain fraction, also can use multiple grain fraction simultaneously, realizes the pore emulation on leatheroid surface.At least one in the preferred powder emery of the present invention (i.e. silicon carbide), steel sand (also claiming steel ball), granulated glass sphere, aluminium pill, resin sand, plastics sand, walnut sand, aluminum oxide, cerium oxide, zirconium white.
Keep physics, chemical property stable to the basic demand of grain fraction in the present invention.And keep unreactiveness between all the other components of release coating, namely can not produce chemical reaction.
Because in release coating, grain fraction is only the doping of physical property, therefore can determine do not have other strictly to limit to all the other components of release coating and grain fraction meeting under above principle prerequisite according to above principle for all the other components of release coating and suitable grain fraction of adding.
As preferably, described grain fraction is at least one in resin sand or walnut sand.
Resin sand is the particle be made up of thermoplasticity acrylic or polymerization thermosetting amine, and tool unreactiveness, through suitable use and recovery, can reduce the generation of harmful waste, reduces environmental pollution; Walnut sand is by after nut-shell fragmentation, and refine through strict sifting sort multiple working procedure and form, hardness is low and not siliceous, has good toughness, can reduce the damage to artificial leather surface.
Present invention also offers a kind of separate-type paper used for artificial leather utilizing the described release coating containing grain fraction to prepare, utilize this separate-type paper can prepare the high imitation leather of fidelity.
A kind of separate-type paper used for artificial leather, by body paper and be attached to the body paper surface undercoat of side successively and release coating is formed, described release coating is formed by the described release coatings after fixing containing grain fraction, and the median size of described grain fraction is greater than the thickness of release coating.
When containing the release coating of grain fraction described in coating, should keep stirring, prevent grain fraction from separating out, guarantee that grain fraction is uniformly distributed in release coating, the median size of described grain fraction need be greater than the thickness of release coating, after making release coating curing, described grain fraction gives prominence to release coatingsurface, form some particle points of random distribution, when using described separate-type paper manufacturer fabricate-leather, these particle points can form the aperture of some random distribution on artificial leather surface, and the pore as natural leather distributes.
Described release coating, not containing solvent, can adopt prior art solidify and suppress decorative pattern simultaneously, due to the existence of grain fraction in release coating, make the decorative pattern fidelity on the leatheroid surface obtained higher.
Release coating used for artificial leather provided by the invention and the separate-type paper utilizing this release coating to prepare, because grain fraction is in the projection of release coatingsurface formation random distribution, the corresponding leatheroid surface utilizing this separate-type paper to produce forms the pore of random distribution, there is higher simulated effect, avoid the stiff sense that artificial splicing decorative pattern produces.
Accompanying drawing explanation
Fig. 1 is the present invention's separate-type paper diagrammatic cross-section used for artificial leather;
Fig. 2 is the present invention's separate-type paper manufacture method used for artificial leather schematic diagram.
Embodiment
Embodiment 1
With weight parts, get 30 parts of isodecyl acrylates, 5 parts of Perfluoroalkylethyl methacrylates (Zonyl TM), 20 parts of methoxy poly (ethylene glycol) (350) monomethacrylates, 20 parts of tri (propylene glycol) diacrylates, 10 parts of Viscoat 295s, 2 parts of fluoro epoxies (preparation method is shown in Chinese patent CN 101497730A embodiment 1), 4 parts of Irgacure 184, 5 parts of diethylenetriamines, 1 part of median size 50 submicron resin sand, at room temperature, above-mentioned each component is put into container successively mix, stir and high speed dispersion, liquefiable solid ingredient is impelled to dissolve, obtain the release coating uniformly containing grain fraction.
As shown in Figure 1, a kind of separate-type paper used for artificial leather comprises body paper 1, the undercoat 2 of the surperficial side of body paper 1 and release coating 3.
In the present invention for the basic demand of body paper 1 be: quantitative 110 ~ 150g/m
2, AKD or rosin/Tai-Ace S 150 applying glue, CaCO
3filler is lower than 5%; Generally can select the fiber furnish of needlebush and leaf wood to regulate and control to the bulk of body paper and intensity.Body paper can affect quantitative, the performance such as intensity, thermotolerance, coating adhesion, flexibility of leatheroid separate-type paper.
Undercoat 2, between body paper 1 and release coating 3, can improve the coating performance of release coating on body paper 1 containing grain fraction, and strengthen the bonding force between release coating 3 and body paper 1.Undercoat 2 can be removed from office separate-type paper priming paint (as one or more in benzene emulsion, styrene-butadiene emulsion, pure-acrylic emulsion, organosilicon crylic acid latex) coating with any existing conventional artificial and be obtained, after the coating completing undercoat 2 and drying, undercoat 2 covers release coating 3, step is as shown in Figure 2, specific as follows:
The release coating prepared is placed in hopper 8, keep constantly stirring, coating roll 7 adheres to the release coating in hopper 8, by release pigment transfer to the surface (in Fig. 2, the B direction of arrow is grain roller 6 turning directions) of grain roller 6 (surface of grain roller 6 be carved with in advance except " pore " shape other need impressing pattern), under the traction of deflector roll 4 and deflector roll 9, with the body paper 1 of undercoat 2 through the surface of grain roller 6, release coating is evenly coated on undercoat 2, after solidification equipment 5 solidifies, form release coating 3, obtain separate-type paper 10 (in Fig. 2, the A direction of arrow is separate-type paper 10 working direction).
Embodiment 2
With weight parts, get 30 parts of isodecyl acrylates, 5 parts of Perfluoroalkylethyl methacrylates (Zonyl TM), 20 parts of methoxy poly (ethylene glycol) (350) monomethacrylates, 20 parts of tri (propylene glycol) diacrylates, 10 parts of Viscoat 295s, 2 parts of fluoro epoxies (preparation method is shown in Chinese patent CN 101497730A embodiment 1), 4 parts of Irgacure 184, 5 parts of diethylenetriamines, 1.4 parts of median size 70 submicron resin sand, at room temperature, above-mentioned each component is put into container successively mix, stir and high speed dispersion, liquefiable solid ingredient is impelled to dissolve, obtain the release coating uniformly containing grain fraction.
By method described in embodiment 1, by the release paint containing grain fraction on undercoat 2, obtain separate-type paper 10.
Embodiment 3
With weight parts, get 30 parts of isodecyl acrylates, 5 parts of Perfluoroalkylethyl methacrylates (Zonyl TM), 20 parts of methoxy poly (ethylene glycol) (350) monomethacrylates, 20 parts of tri (propylene glycol) diacrylates, 10 parts of Viscoat 295s, 2 parts of fluoro epoxies (preparation method is shown in Chinese patent CN 101497730A embodiment 1), 4 parts of Irgacure 184, 5 parts of diethylenetriamines, 2 parts of median size 100 submicron resin sand, at room temperature, above-mentioned each component is put into container successively mix, stir and high speed dispersion, liquefiable solid ingredient is impelled to dissolve, obtain the release coating uniformly containing grain fraction.
By method described in embodiment 1, by the release paint containing grain fraction on undercoat 2, obtain separate-type paper 10.
Embodiment 4
With weight parts, get 30 parts of isodecyl acrylates, 5 parts of Perfluoroalkylethyl methacrylates (Zonyl TM), 20 parts of methoxy poly (ethylene glycol) (350) monomethacrylates, 20 parts of tri (propylene glycol) diacrylates, 10 parts of Viscoat 295s, 2 parts of fluoro epoxies (preparation method is shown in Chinese patent CN 101497730A embodiment 1), 4 parts of Irgacure 184, 5 parts of diethylenetriamines, 2 parts of median sizes, 30 microns of walnut sand, at room temperature, above-mentioned each component is put into container successively mix, stir and high speed dispersion, liquefiable solid ingredient is impelled to dissolve, obtain the release coating uniformly containing grain fraction.
By method described in embodiment 1, by the release paint containing grain fraction on undercoat 2, obtain separate-type paper 10.
Embodiment 5
With weight parts, get 30 parts of isodecyl acrylates, 5 parts of Perfluoroalkylethyl methacrylates (Zonyl TM), 20 parts of methoxy poly (ethylene glycol) (350) monomethacrylates, 20 parts of tri (propylene glycol) diacrylates, 10 parts of Viscoat 295s, 2 parts of fluoro epoxies (preparation method is shown in Chinese patent CN 101497730A embodiment 1), 4 parts of Irgacure 184, 5 parts of diethylenetriamines, 2 parts of median sizes, 250 microns of walnut sand, at room temperature, above-mentioned each component is put into container successively mix, stir and high speed dispersion, liquefiable solid ingredient is impelled to dissolve, obtain the release coating uniformly containing grain fraction.
By method described in embodiment 1, by the release paint containing grain fraction on undercoat 2, obtain separate-type paper 10.
Embodiment 6
With weight parts, get 30 parts of isodecyl acrylates, 5 parts of Perfluoroalkylethyl methacrylates (Zonyl TM), 20 parts of methoxy poly (ethylene glycol) (350) monomethacrylates, 20 parts of tri (propylene glycol) diacrylates, 10 parts of Viscoat 295s, 2 parts of fluoro epoxies (preparation method is shown in Chinese patent CN 101497730A embodiment 1), 4 parts of Irgacure 184, 5 parts of diethylenetriamines, 2 parts of median size 70 micron chickens steel sands, at room temperature, above-mentioned each component is put into container successively mix, stir and high speed dispersion, liquefiable solid ingredient is impelled to dissolve, obtain the release coating uniformly containing grain fraction.
By method described in embodiment 1, by the release paint containing grain fraction on undercoat 2, obtain separate-type paper 10.
Comparative example 1
With weight parts, get 30 parts of isodecyl acrylates, 5 parts of Perfluoroalkylethyl methacrylates (Zonyl TM), 20 parts of methoxy poly (ethylene glycol) (350) monomethacrylates, 20 parts of tri (propylene glycol) diacrylates, 10 parts of Viscoat 295s, 2 parts of fluoro epoxies (preparation method is shown in Chinese patent CN 101497730A embodiment 1), 4 parts of Irgacure 184, 5 parts of diethylenetriamines, at room temperature, above-mentioned each component is put into container successively mix, stir and high speed dispersion, liquefiable solid ingredient is impelled to dissolve, evenly connect the release coating of diaphanous contrast sample.
By method described in embodiment 1, the release paint of sample will be contrasted on undercoat 2, obtain separate-type paper 10.
Performance test:
By the following method to utilizing the obtained separate-type paper of manufacture method of the present invention to carry out performance test:
The preparation of artificial corium: use scraper for coating method (gap is 250 microns) by solid content be 30% leatheroid PU (urethane) resin be spread evenly across in the release coating of separate-type paper, after drying, on PU resin layer, PU resin adhesive is coated by scraper for coating method, again dry, artificial leather base fabric is adhered to the surface of tackiness agent, after dry and aging, PU resin layer with artificial leather base fabric is peeled off from separate-type paper, namely obtain artificial corium, the pattern on artificial corium is corresponding with the pattern in separate-type paper.
" pore " effect on range estimation income earner fabricate-leather corium, the results are shown in Table 1.
Table 1
| Pore distributes | Pore size | Make the outward appearance after leatheroid | |
| Embodiment 1 | Evenly | Little | Pattern is without stiff sense, and simulated effect is good |
| Embodiment 2 | Evenly | In | Pattern is without stiff sense, and simulated effect is good |
| Embodiment 3 | Evenly | Greatly | Pattern is without stiff sense, and simulated effect is good |
| Embodiment 4 | Evenly | Little | Pattern is without stiff sense, and simulated effect is good |
| Embodiment 5 | Evenly | Greatly | Pattern is without stiff sense, and simulated effect is good |
| Embodiment 6 | Evenly | In | Pattern is without stiff sense, and simulated effect is good |
| Comparative example 1 | Splicing seams place is slightly poor | In | Pattern is stiff, and simulated effect is poor |
After utilizing separate-type paper provided by the invention to make leatheroid, " pore " is evenly distributed, without stiff sense, simulated effect is good, and pore size is adjustable.
Claims (3)
1. a release coating used for artificial leather, it is characterized in that, containing grain fraction in described release coating, the median size of described grain fraction is 50 ~ 100 μm, described grain fraction weight accounts for 1 ~ 2% of release coating gross weight, and described grain fraction is at least one in powder emery, steel sand, granulated glass sphere, aluminium pill, resin sand, walnut sand, aluminum oxide, cerium oxide, zirconium white.
2. release coating used for artificial leather as claimed in claim 1, is characterized in that, described grain fraction is at least one in resin sand or walnut sand.
3. a separate-type paper used for artificial leather, by body paper and be attached to the body paper surface undercoat of side successively and release coating is formed, it is characterized in that, described release coating is formed by the arbitrary described release coatings after fixing of claim 1 ~ 2, and the median size of described grain fraction is greater than the thickness of release coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301703.9A CN102816467B (en) | 2012-08-23 | 2012-08-23 | Release paint for artificial leather and release paper prepared by utilizing release paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301703.9A CN102816467B (en) | 2012-08-23 | 2012-08-23 | Release paint for artificial leather and release paper prepared by utilizing release paint |
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| Publication Number | Publication Date |
|---|---|
| CN102816467A CN102816467A (en) | 2012-12-12 |
| CN102816467B true CN102816467B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350528A (en) * | 2013-07-17 | 2013-10-16 | 浙江池河科技有限公司 | Release paper for high-simulation leather and manufacturing method thereof |
| CN104631208B (en) * | 2014-12-25 | 2017-07-07 | 浙江池河科技有限公司 | Release coating and release liners and the application in multicomponent reactive polyurethane leather is manufactured |
| CN106479159A (en) * | 2016-10-31 | 2017-03-08 | 湖南科技大学 | A kind of preparation method of silicon carbide-based polishing synthetic paper |
| CN106633809A (en) * | 2016-10-31 | 2017-05-10 | 湖南科技大学 | Method for preparing alumina-based polishing synthetic paper |
| CN106633810A (en) * | 2016-10-31 | 2017-05-10 | 湖南科技大学 | Preparation method of special activated carbon synthetic paper |
| CN113527739A (en) * | 2021-07-09 | 2021-10-22 | 瑞泰铸纸(东莞)有限公司 | Release film for leather and preparation method thereof |
| WO2024078484A1 (en) * | 2022-10-12 | 2024-04-18 | Avery Dennison Corporation | Non-silicone and non-fluorine release coating comprising polymer binders and micro beads |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4330320B2 (en) * | 2002-09-27 | 2009-09-16 | 大日本印刷株式会社 | Matt layer forming composition and release sheet using the same |
| WO2005083022A1 (en) * | 2004-02-27 | 2005-09-09 | Daicel Chemical Industries, Ltd. | Aqueous polyurethane coating composition |
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