CN101565918B - High-light release paper for synthetic leather - Google Patents
High-light release paper for synthetic leather Download PDFInfo
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- CN101565918B CN101565918B CN2009100746459A CN200910074645A CN101565918B CN 101565918 B CN101565918 B CN 101565918B CN 2009100746459 A CN2009100746459 A CN 2009100746459A CN 200910074645 A CN200910074645 A CN 200910074645A CN 101565918 B CN101565918 B CN 101565918B
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Abstract
A high-light release paper for synthetic leather is provided with a multi-functional layer between a substrate and a release layer; the multi-functional layer comprises 30 to 80 parts by weight of inorganic particles, 20 to 80 parts by weight of adhesives, 30 to 80 parts by weight of water, 1 to 8 parts by weight of dispersing agent, and 1 to 5 parts by weight of surfactant; and the forming materials of the release layer comprise alkyd modified silicone resin, melamine resin and acid catalyst. The invention has the advantages of low cost, good performance, excellent re-use performance, and over 70 percent of gloss for the angle of 60 degrees measured according to ISO-2813.
Description
Technical field
The present invention relates to a kind of paper products, particularly a kind of synthetic leather release liners.
Background technology
The method of making synthetic leather has a variety of, usually a kind of is: coating synthetic leather constituent on the leather release liners, for example, urethane resin, vinyl chloride resin, polyamide, and amino resins etc., make it dry or curing, on this constituent, be coated with binding agent then, paste fabric backing etc., by the leather release liners is peeled off the acquisition synthetic leather from the synthetic leather constituent.The synthetic leather of Zhi Zaoing in this way is that the surface state with the leather release liners copies on the synthetic leather, so can obtain the synthetic leather of apparent good, high glaze by the surface gloss of improving the apparent of leather release liners and improving the leather release liners.
At present, the technology of preparation leather release liners has multiple.Publication number be the Chinese patent application of CN101020378A described be that thermoplastic resins such as homopolymers, acrylic resin or amylene resinoid with alpha-olefin melt extrude and cover at least one face of supporter, by chill roll, be laminated to substrate surface and make then.Use the leather release liners of this fabrication techniques, have excellent embossing plastic property, in the manufacturing of the synthetic leather that uses bi-component curable PU, have good fissility and reusability.But because peel ply is made of thermoplastic resin, leather release liners poor heat resistance has the problem that can not use in the PVC synthetic leather is made.
Publication number provides the another kind of method for preparing antistatic leather release liners for the Chinese patent application of CN1485387A, on the polishing coated paper smooth layer coating fluid that one deck is made up of alkyd resins and melamine resin is set, and solidify to form smooth layer; The peel ply coating fluid that one deck is made up of silicon modified alkyd resin and melamine resin is set on smooth layer again, solidify to form peel ply.Use the leather release liners of this method preparation to be widely used in the production of PU and PVC type synthetic leather, but this technology need be added antistatic agent to the having relatively high expectations of paper substrate in paper substrate, also need the polishing that feels secure, production process is many, the cost height.
Application number provides another to prepare the technology of the leather release liners of low cost, high glaze for 200810079831.7 Chinese patent application, it is coated with the multi-functional layer that one deck is made up of adhesive, water and surfactant on base material, on multi-functional layer, be coated with the release coating fluid of forming by alkyd modified silicones, melmac and acid catalyst, film-forming then.The leather release liners of using this method to prepare can be used for the production of PU and PVC type synthetic leather.But along with the leather release liners surface of increasing of reusing number of times produces orange peel phenomenon, glossiness reduces obviously.
Summary of the invention
Technical problem to be solved by this invention is the defective that overcomes above-mentioned prior art, provide a kind of cost low, apparent good, high-light release paper for synthetic leather that repeat performance is good.
For addressing the above problem, technical scheme provided by the invention is:
A kind of high-light release paper for synthetic leather comprises base material and release layer, after the improvement, is provided with a multi-functional layer between base material and release layer, and the component and the parts by weight thereof of described multi-functional layer are:
Inorganic particulate 30～80 weight portions;
Adhesive 20～80 weight portions;
Water 30-80 weight portion;
Dispersant 1～8 weight portion;
Surfactant 1～5 weight portion;
The formation material of described release layer comprises alkyd modified silicones, melmac and acid catalyst; Described off-style paper layer according to ISO-2813 record 60 the degree angles glossiness more than 70%.
Above-mentioned high-light release paper for synthetic leather, the component and the parts by weight thereof of described multi-functional layer are:
Inorganic particulate 40～70 weight portions;
Adhesive 30～70 weight portions;
Water 40～70 weight portions;
Dispersant 1～5 weight portion;
Surfactant 1～3 weight portion.
Above-mentioned high-light release paper for synthetic leather, the inorganic particulate in the described multi-functional layer is one or more of kaolin, clay, calcium carbonate, talcum, barium sulfate etc., the particle diameter of particle is 0.2～15 μ m.
Above-mentioned high-light release paper for synthetic leather, the adhesive in the described multi-functional layer are one or more in benzene emulsion, styrene-butadiene emulsion, pure-acrylic emulsion, the Silicone acrylic emulsion.
Above-mentioned high-light release paper for synthetic leather, the dispersant in the described multi-functional layer is inorganic dispersant or organic dispersing agent.
Above-mentioned high-light release paper for synthetic leather, described dispersant are a kind of in waterglass, calgon, Sodium Polyacrylate, methyl sodiosul foaliphatate or the gelatin.
Above-mentioned high-light release paper for synthetic leather, the surfactant in the described multi-functional layer is anion surfactant, cationic surfactant or amphoteric surfactant.
Above-mentioned high-light release paper for synthetic leather, described surfactant are a kind of in dodecyl sodium sulfate, dodecyl benzyl dimethyl ammonium chloride or the empgen BB.
As supporting the base material that multi-functional layer and release layer are used, can be the body paper of handling through coating, also can be clay coated paper, curtain coating coated paper.The specification of paper substrate does not have special requirement, preferred grammes per square metre between 150 to 200 grammes per square metres, the paper substrate between 150 microns to 200 microns of the thickness.They adopt the known method manufacturing.Body paper is handled through multiple working procedure processing by timber and is formed, and is made of rough surface a large amount of xylons.The body paper rough surface is owing to exist the slit between the fiber, when directly being coated with release layer on body paper, can cause coating surface uneven, and the gloss homogeneity is poor; The release layer coating fluid can be penetrated in the middle of the body paper by the slit between xylon in addition.These can cause the problem of peeling off difficulty in the synthetic leather process, and the synthetic leather lustrous surface that finally makes is irregular, spottiness.In order to address the above problem, generally take between base material and release layer, to be provided with the method for shim and smooth layer in the prior art or directly use clay coated paper or the curtain coating coated paper as base material, easy like this thickness increase, the production cost of product of causing increases, and product market competitiveness is reduced.
Among the present invention, for increasing the smoothness and the impermeable ability of base material, be provided with multi-functional layer between base material and release layer, this multi-functional layer has impermeable and level and smooth effect, has solved that existing product thickness is big, production cost is high, the limited shortcoming of repeated use number of times.
Adhesive in the described multi-functional layer forms fine and close film through being heating and curing, and can effectively intercept the osmosis of solvent to paper substrate.The film that adhesive forms also has good solvent resistance, solvent is applied the situation that can not occur the dissolved destruction film on it.In addition, adhesive coated on paper, the coarse state of paper surface can be covered, the flatness of paper can be obviously improved.But owing to adhesive is using in the environment of long-term high heat, the release layer orange peel phenomenon can appear in surface meeting roughening.
In order to improve leather release liners repeat performance, eliminate orange peel phenomenon, added inorganic particulate in the described multi-functional layer coating fluid.The adding of inorganic particulate changes the film forming institutional framework, produces laminated structure in the rete, and the inorganic particulate of sheet is folded at the base paper sheet surface layer regularly, and making originally, coarse surface texture becomes smooth.In addition, the slit between the xylon can effectively be filled and cover to laminated structure, thereby effectively controlled the osmosis of adhesive by slit between the xylon.In addition, the adding of inorganic particulate has effectively reduced the surface tension of multi-functional layer coating fluid on the one hand, has reduced being coated with the possibility that shrinkage cavity occurs, helps forming surface Paint Gloss; On the other hand, inorganic particulate has very strong heat resistance, and the phenomenon of apparent chap can not take place, and has guaranteed the repeated use of leather release liners.
Dispersant in the described multi-functional layer is inorganic dispersant or organic dispersing agent, the effect that adds dispersant, the one, help reducing material viscosity, make and the easier dispersion of multi-functional layer guarantee the dispersion homogeneity of inorganic particulate in multi-functional layer coating fluid, promptly, guarantee the fineness of coating, the fineness of indication coating, not clearly restriction is as long as no obvious bulky grain is assembled; The 2nd, help keeping the relative stability of dispersion, prevent the sedimentation of inorganic particulate.
In addition, for guaranteeing the dispersing uniformity of inorganic particulate in multi-functional layer coating fluid, the mode of high-speed stirred is adopted in the dispersion of inorganic particulate, utilizes the high shear forces of high-speed stirred to eliminate bulky grain, reduces the reunion of solids in the dispersion.
In order to produce good coating effect, also should add surfactant in the multi-functional layer coating fluid, on the one hand, the existence of surfactant can reduce the coating fluid surface energy, helps coating fluid to the wetting of paper with sprawl, the generation of the shrinkage cavity that prevents to film; On the other hand, can play the effect of the levelling of filming, make multi-functional layer more level and smooth.Very big as the optional scope of surfactant: as carboxylate (RCOO
-M
+), sulfonate (RSO
3 -M
+), sulfuric acid (ROSO
3 -M
+), phosphate (ROPO
3 -M
+) wait anion surfactant, wherein R is an alkyl, M is mainly alkali metal and ammonium ion; Quaternary ammonium salt (RNR
3'
+A
-), Fixanol (RC
5H
5N
+A
-), amine salt (R
nNH
m +A
-, n=1-3 m=1-3) waits cationic surfactant, and wherein A mainly is halogen and acid ion; Betaine (RN
+(CH
3)
2CH
2COO
-) wait amphoteric surfactant; Polyoxyethylene compounds (RO (C
2H
4O)
nH), multicomponent alcoholics compound (as the derivative of sucrose, D-sorbite, glycerine, ethylene glycol etc.), sulfoxide compound (RSOR '), amine oxide nonionic surface active agent such as (RNO); The silicon of type siloxane is surfactant.Preferred dodecyl sodium sulfate, dodecyl benzyl dimethyl ammonium chloride or empgen BB.
The thickness of multi-functional layer should be too not thin, and is too thin, do not have the effect of sealing release layer coating fluid; Can not be too thick, too thick, can cause the uneconomical of production, consume more heat.Usually as dried coating weight, preferred 1-50g/m
2, more preferably 5-45g/m
2, preferred especially 5-40g/m
2
The method that multi-functional layer is set on a surface of base material can be carried out as follows: inorganic particulate height under the dispersant booster action is stirred be dispersed in the water, stir, successively add a certain amount of adhesive and surfactant again, continue stirring and obtain multi-functional layer coating fluid composition, be coated on the face of base material, and make it dry.
Being coated with multi-functional layer of method that is adopted can use intaglio plate rubbing method, rod to be coated with known coating processes such as method, spraying process, method of spin coating, airblade coating method, rolling method, scraper rubbing method, door roller rubbing method, die head formula rubbing method.
In addition, as drying means, for example can adopt heated drying methods such as hot-air drying stove, infra-red drying, oil drying.Baking temperature does not have particular restriction, preferred 80-150 ℃, drying time preferred 30-300s.
Generally speaking, the multi-functional layer coating fluid component that is used for the leather release liners can also add antistatic agent and rheological agent.
Under the situation of not adding antistatic agent, the order of magnitude of the sheet resistance of multi-functional coating layer is 10
12Ω when making synthetic leather with the leather release liners that makes, along with increasing of access times, can influence the access times of leather release liners owing to produce the micro-crack that static causes release layer and synthetic leather, has shortened the service life of leather release liners greatly.In order to address this problem, need to add antistatic agent.As antistatic agent, can use the organic antistatic agent of polyvinyl alcohol, can also use inorganic anti-electrostatic agent such as sodium chloride, potassium chloride.
The addition of above-mentioned antistatic agent is 0.5 quality %～2.0 quality %, and when addition during less than 0.5 quality %, anti-static effect is not good; When addition during greater than 2.0 quality %, anti-static effect does not have anything to improve yet, and adds to cause raw-material waste, can increase cost simultaneously.
For the viscosity that makes multi-functional layer coating fluid is fit to coating, may in coating fluid, adds rheological agent and regulate viscosity.As rheological agent, can use organobentonite, aerosil etc.The addition of rheological agent is to be adjusted to suitable being as the criterion to the coating fluid viscosity.
Release layer provides the surface of sprawling of making synthetic leather, the surface state of release layer directly affects the surface state of synthetic leather, as obtaining the synthetic leather of high glaze, the surface of release layer should smoothly and have gloss, in addition, release layer should also provide the surface that synthetic leather is peeled off, and the quality of fissility directly affects the yield rate that synthetic leather is produced.Existing technology is to use alkyd modified silicones, melmac, acid catalyst, solvent and inorganic particulate to make the release layer coating fluid, makes the release layer surface that makes in this way lackluster, and recessed prominent injustice.In order to reach the effect of high glaze, the present invention takes inorganic particulate is wherein removed, and the release layer of making has higher gloss.
Leather release liners release layer of the present invention is made by alkyd modified silicones, melmac, acid catalyst, solvent, is applicable to that the prescription of release layer of the present invention includes but not limited to following prescription:
Alkyd modified silicones 50 weight portions;
Melmac 50 weight portions;
Acid catalyst 4.2 weight portions;
Solvent 500 weight portions;
Alkyd modified silicones is the film-forming resin in the system, mainly plays a part release.By containing alkyd modified silicones, when making synthetic leather with the leather release liners, easily this leather release liners and synthetic leather are peeled off in the release layer, in addition, also the feasible synthetic leather that is obtained is in apparent good order and condition.The consumption of alkyd modified silicones has certain restriction, and when its large usage quantity, the frictional resistance on leather release liners surface too reduces, so, become the reason of leather release liners loose winding.And in the process of making synthetic leather, when being applied to the synthetic leather coating fluid on the leather release liners, the wettability of this coating fluid worsens, and makes coating fluid be difficult to coating.On the other hand, alkyd modified silicones consumption is crossed the young pathbreaker and is caused synthetic leather to peel off difficulty.
Melmac is the curing agent in the system, and main effect is that a plurality of alkyd modified silicones are linked up, and the alkyd modified silicones of linear structure is transformed into three-dimensional-structure, improves the crosslink density of release layer.By adding curing agent, can improve the heat-resisting quantity and the solvent resistance of release layer.The consumption of melmac also can not be excessive, and is big, then causes the release layer pliability poor.
Acid catalyst is mainly used in the amino-stoving varnish system, and its effect mainly contains: reduce solidification temperature; Shorten hardening time; Improve hardness, the gloss of coating; Improve moisture resistance and corrosion resistance; Improve the mechanical performance of coating.As acid catalyst can be p-methyl benzenesulfonic acid, DBSA, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid.
Organic solvent as release layer uses can list aromatic hydrocarbons such as toluene, dimethylbenzene, aliphatic hydrocarbons such as hexane, heptane, octane, ketones such as Ketene dimethyl, butanone, diethyl ketone, cyclohexanone.Can use wherein a kind of separately, also can use the mixture more than 2 kinds.
The general preparation method of leather release liners release layer is: take by weighing solvent earlier, add acid catalyst again, be stirred well to acid catalyst and dissolve fully, add alkyd modified silicones, melmac at last and be stirred to dissolving fully, make the release layer coating fluid.The release layer coating fluid is coated on the multi-functional layer, and heating makes it to solidify.
The thickness of release layer should strict control.Too thin, in the process of making synthetic leather, release liners and synthetic leather are difficult for peeling off, and cause part easily; Too thick, the leather release liners is difficult for film-forming.Usually as dried coating weight, preferred 1-50g/m
2, more preferably 2-45g/m
2, preferred especially 4-40g/m
2
The coating method that peel ply adopted is similar to the method for the multi-functional layer of coating.
In addition, as drying means, for example can adopt heated drying methods such as hot-air drying stove, infra-red drying, oil drying.Baking temperature does not have particular restriction, preferred 100-200 ℃, drying time preferred 30-300s.
Leather release liners provided by the invention can prepare by following method:
Multi-functional layer is coated on the paper substrate, and heating makes its curing; Then release layer is coated on the multi-functional layer, is heating and curing.
Multi-functional layer can adopt methods such as scraper coating, intaglio plate coating to be coated on the paper substrate.Release layer can adopt methods such as rod is coated with, intaglio plate coating to coat on the multi-functional layer.
Compared with prior art, the present invention has adopted the multi-functional layer with impermeable and smoothing effect, makes the product cost that obtains low; Release layer of the present invention does not contain inorganic particulate, makes the product of making have higher gloss; Multi-functional layer of the present invention has added inorganic particulate, has improved the structure of multi-functional layer and apparent, makes the product of making have apparent preferably and repeat performance.
The specific embodiment
The present invention is described further below in conjunction with specific embodiment, but be not limited thereto.
The prescription of release layer:
Release layer of the present invention adopts following prescription:
Alkyd modified silicones 50 weight portions;
Melmac 50 weight portions;
Toluenesulfonic acid acid catalyst 4.2 weight portions;
Butanone solvent 500 weight portions;
Embodiment 1:
The preparation of multi-functional layer coating fluid:
Kaolin 30 weight portions;
Benzene emulsion 20 weight portions;
Water 30 weight portions;
Waterglass 1 weight portion;
Dodecyl sodium sulfate 3 weight portions;
Earlier the waterglass (Laiyang permanent letter chemical industry Co., Ltd) of 1 weight portion is poured in the water of 30 weight portions, stir, pour kaolin (Maoming Silver Flower Kao Lin Clay Co., Ltd.'s model: YH-04) of 30 weight portions therein into, use high-speed stirred that it is uniformly dispersed, benzene emulsion (the German BASF model: 296DS solid content: 50%) that in scattered slurry, adds 20 weight portions, with glass bar solution is mixed, dodecyl sodium sulfate with 3 weight portions is added on wherein again, continue to stir, make multi-functional layer coating fluid, stand-by.
Use the multi-functional layer of scraper coating coating fluid on the asbestos base paper of 200 grammes per square metres, 80 ℃ are heated 30 seconds film-formings, 30 microns of thickness down.Be coated with release layer with the silk rod then on multi-functional layer, 100 ℃ solidified 40 seconds, and 5 microns of thickness obtain the leather release liners.Carry out fissility test and glossiness test.
Embodiment 2:
The preparation of multi-functional layer coating fluid
Clay 50 weight portions;
Talcum powder 30 weight portions;
Styrene-butadiene emulsion 40 weight portions;
40 kinds of amount parts of benzene emulsion;
Water 30 weight portions;
Calgon 5 weight portions;
Dodecyl benzyl dimethyl ammonium chloride 2 weight portions;
Earlier the calgon (the light organic material of Central-Southization of Hubei limited company) of 5 weight portions is poured in the water of 30 weight portions, stir, pour the talcum powder (the high-grade talcum powder of Haicheng City snowy peak factory) of 50 parts by weight of clay (Wal, Shenzhen nanotesla kind Materials Co., Ltd) and 30 weight portions therein into, use high-speed stirred that it is uniformly dispersed, 50%) and the benzene emulsion of 40 weight portions (German BASF model: 296DS solid content: 50%) styrene-butadiene emulsion (the German Baeyer model: F2040 solid content: that in scattered slurry, adds 40 weight portions, with glass bar solution is mixed, dodecyl benzyl dimethyl ammonium chloride with 2 weight portions is added on wherein again, continue to stir, make multi-functional layer coating fluid, stand-by.
Use the multi-functional layer of scraper coating coating fluid on the art paper of 150 grammes per square metres, 80 ℃ are heated 30 seconds film-formings, 30 microns of thickness down.Be coated with release layer with the silk rod then on multi-functional layer, 100 ℃ solidified 40 seconds, and 10 microns of thickness obtain the leather release liners.Carry out fissility test and glossiness test.
Embodiment 3:
The preparation of multi-functional layer coating fluid
Calcium carbonate 80 weight portions;
Pure-acrylic emulsion 20 weight portions;
Water 80 weight portions;
Sodium Polyacrylate 2 weight portions;
Empgen BB 5 weight portions;
Elder generation is with Sodium Polyacrylate (the vertical new material Science and Technology Ltd. model of hoping in Guangzhou: N-30) pour in the water of 80 weight portions of 2 weight portions, stir, pour calcium carbonate (the Jiangxi Guang Yuan chemical industry Co., Ltd model: CC-2000) of 80 weight portions therein into, use high-speed stirred that it is uniformly dispersed, pure-acrylic emulsion (the German Baeyer model: F2040 solid content: 50%) that in scattered slurry, adds 20 weight portions, with glass bar solution is mixed, empgen BB with 5 weight portions is added on wherein again, continue to stir, make multi-functional layer coating fluid, stand-by.
Use the multi-functional layer of scraper coating coating fluid on the asbestos base paper of 180 grammes per square metres, 80 ℃ are heated 30 seconds film-formings, 30 microns of thickness down.Be coated with release layer with the silk rod then on multi-functional layer, 100 ℃ solidified 40 seconds, and 20 microns of thickness obtain the leather release liners.Then, carry out peel property test, the test of leather glossiness and repeat to peel off back glossiness test.
Embodiment 4:
The preparation of multi-functional layer coating fluid
Kaolin 20 weight portions;
Barium sulfate 10 weight portions;
Silicone acrylic emulsion 60 weight portions;
20 kinds of amount parts of pure-acrylic emulsion;
Water 30 weight portions;
Methyl sodiosul foaliphatate 1 weight portion;
Dodecyl sodium sulfate 1 weight portion;
Earlier the methyl sodiosul foaliphatate (the rich petrochemical industry Co., Ltd of containing in Ningbo) of 1 weight portion is poured in the water of 30 weight portions, stir, pour kaolin (Maoming Silver Flower Kao Lin Clay Co., Ltd.'s model: YH-04) and the barium sulfate of 10 weight portions (Shanghai jump river titanium white heavy chemicals Co., Ltd) of 20 weight portions therein into, use high-speed stirred that it is uniformly dispersed, 55%) and the pure-acrylic emulsion of 20 weight portions (German BASF model: PA237 solid content: 50%) Silicone acrylic emulsion (east, Beijing connection chemical industry solid content: that in scattered slurry, adds 60 weight portions, with glass bar solution is mixed, dodecyl sodium sulfate with 1 weight portion is added on wherein again, continue to stir, make multi-functional layer coating fluid, stand-by.
Use the multi-functional layer of scraper coating coating fluid on the asbestos base paper of 150 grammes per square metres, 80 ℃ are heated 30 seconds film-formings, 30 microns of thickness down.Be coated with release layer with the silk rod then on multi-functional layer, 100 ℃ solidified 40 seconds, and 30 microns of thickness obtain the leather release liners.Then, carry out peel property test, the test of leather glossiness and repeat to peel off back glossiness test.
Embodiment 5:
The preparation of multi-functional layer coating fluid
Clay 20 weight portions;
Calcium carbonate 10 weight portions;
Talcum powder 10 weight portions;
40 kinds of amount parts of styrene-butadiene emulsion;
Water 40 weight portions;
Gelatin 8 weight portions;
Empgen BB 3 weight portions;
Earlier the gelatin (Luohe City Five Dragons gelatin Co., Ltd) of 8 weight portions is poured in the water of 40 weight portions, stir, pour 20 parts by weight of clay (Wal, Shenzhen nanotesla kind Materials Co., Ltd) therein into, the calcium carbonate of 10 weight portions (Jiangxi Guang Yuan chemical industry Co., Ltd model: CC-2000) and the talcum powder of 10 weight portions (the high-grade talcum powder of Haicheng City snowy peak factory), use high-speed stirred that it is uniformly dispersed, styrene-butadiene emulsion (the German Baeyer model: F2040 solid content: 50%) that in scattered slurry, adds 40 weight portions, with glass bar solution is mixed, empgen BB with 3 weight portions is added on wherein again, continue to stir, make multi-functional layer coating fluid, stand-by.
Use the multi-functional layer of scraper coating coating fluid on the art paper of 200 grammes per square metres, 80 ℃ are heated 30 seconds film-formings, 30 microns of thickness down.Be coated with release layer with the silk rod then on multi-functional layer, 100 ℃ solidified 40 seconds, and 20 microns of thickness obtain the leather release liners.Then, carry out peel property test, the test of leather glossiness and repeat to peel off back glossiness test.
Comparative Examples:
The preparation of multi-functional layer coating fluid
Styrene-butadiene emulsion 30 weight portions;
10 kinds of amount parts of pure-acrylic emulsion;
20 kinds of amount parts of Silicone acrylic emulsion;
Water 40 weight portions;
Empgen BB 3 weight portions;
Earlier the water of 40 weight portions is added on by the styrene-butadiene emulsion of 30 weight portions (German Baeyer model: F2040 solid content: 50%), the pure-acrylic emulsion of 10 amounts part (German BASF model: PA237 solid content: 50%) and the Silicone acrylic emulsion of 20 weight portions (east, Beijing joins the chemical industry solid content: in the mixed emulsion of 55%) forming, with glass bar solution is mixed, empgen BB with 3 weight portions is added on wherein again, continue to stir, make multi-functional layer coating fluid, stand-by.
Use the multi-functional layer of scraper coating coating fluid on the art paper of 200 grammes per square metres, 80 ℃ are heated 30 seconds film-formings, 30 microns of thickness down.Be coated with release layer with the silk rod then on multi-functional layer, 100 ℃ solidified 40 seconds, and 30 microns of thickness obtain the leather release liners.Then, carry out peel property test, the test of leather glossiness and repeat to peel off back glossiness test.
Table 1: properties of product data
In the table:
1. the method for testing of peel property:
PU leather coating fluid is coated on the leather release liners, heating was solidified in 1 minute in 120 ℃ baking oven, then the PU leather was stripped down from the leather release liners, if there are not leather remnants on the leather release liners, and the release liners surface is without any damage, and promptly PU leather peel property is qualified; PVC leather coating fluid is coated on the leather release liners, heating was solidified in 1 minute in 160 ℃ baking oven, then the PVC leather was stripped down from the leather release liners, if there are not leather remnants on the leather release liners, and the release liners surface is without any damage, and promptly PVC leather peel property is qualified.
2. glossiness method of testing:
Glossiness with XGP60 ° of mirror display glossness gauge test leather release liners release layer.
3. repeat to peel off back glossiness test:
PU leather coating fluid is coated on the leather release liners, and heating was solidified in 1 minute in 120 ℃ baking oven, then the PU leather was stripped down from the leather release liners.After repeating this operation 15 times, with the glossiness of XGP60 ° of mirror display glossness gauge test leather release liners release layer.
By data in the table as can be seen, adopt multi-functional layer of the present invention after, the peel property of the leather release liners of making, leather glossiness and repeat to peel off back glossiness test and all meet the requirements.Adopt multi-functional layer of the present invention, reduced the production process of leather release liners on the one hand, reduced production cost, improved the repeat performance of leather release liners on the other hand.
Claims (7)
1. a high-light release paper for synthetic leather comprises base material and release layer, it is characterized in that, is provided with a multi-functional layer between base material and release layer, and the component and the parts by weight thereof of described multi-functional layer are:
Inorganic particulate 30-80 weight portion;
Adhesive 20～80 weight portions;
Water 30-80 weight portion;
Dispersant 1～8 weight portion;
Surfactant 1～5 weight portion;
The formation material of described release layer adopts alkyd modified silicones, melmac and acid catalyst;
Inorganic particulate in the described multi-functional layer is one or more in kaolin, clay, calcium carbonate, talcum, the barium sulfate, and the particle diameter of particle is 0.2～15 μ m.
2. high-light release paper for synthetic leather according to claim 1 is characterized in that, the component and the parts by weight thereof of described multi-functional layer are:
Inorganic particulate 40-70 weight portion;
Adhesive 30～70 weight portions;
Water 40～70 weight portions;
Dispersant 1～5 weight portion
Surfactant 1～3 weight portion.
3. high-light release paper for synthetic leather according to claim 1 and 2 is characterized in that, the adhesive in the described multi-functional layer is one or more in benzene emulsion, styrene-butadiene emulsion, pure-acrylic emulsion or the Silicone acrylic emulsion.
4. high-light release paper for synthetic leather according to claim 3 is characterized in that, the dispersant in the described multi-functional layer is inorganic dispersant or organic dispersing agent.
5. high-light release paper for synthetic leather according to claim 4 is characterized in that, described dispersant is a kind of in waterglass, calgon, Sodium Polyacrylate, methyl sodiosul foaliphatate or the gelatin.
6. high-light release paper for synthetic leather according to claim 5 is characterized in that, the surfactant in the described multi-functional layer is anion surfactant, cationic surfactant or amphoteric surfactant.
7. high-light release paper for synthetic leather according to claim 6 is characterized in that, described surfactant is a kind of in dodecyl sodium sulfate, dodecyl benzyl dimethyl ammonium chloride or the empgen BB.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100746459A CN101565918B (en) | 2009-06-05 | 2009-06-05 | High-light release paper for synthetic leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100746459A CN101565918B (en) | 2009-06-05 | 2009-06-05 | High-light release paper for synthetic leather |
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| Publication Number | Publication Date |
|---|---|
| CN101565918A CN101565918A (en) | 2009-10-28 |
| CN101565918B true CN101565918B (en) | 2011-04-06 |
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|---|---|---|---|
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| CN102330383B (en) * | 2011-07-12 | 2013-10-30 | 苏州斯迪克新材料科技股份有限公司 | Fog face release paper and preparation method thereof |
| CN103264558B (en) * | 2011-07-12 | 2015-06-10 | 苏州斯迪克新材料科技股份有限公司 | Manufacturing method of release film for organic pressure sensitive adhesive |
| CN102330381B (en) * | 2011-07-12 | 2013-07-31 | 苏州斯迪克新材料科技股份有限公司 | Method for making fog face release paper |
| CN103114504B (en) * | 2011-07-12 | 2014-11-05 | 苏州斯迪克新材料科技股份有限公司 | Method for making matte release paper for pressure sensitive tapes |
| CN103103884B (en) * | 2011-07-12 | 2014-11-05 | 苏州斯迪克新材料科技股份有限公司 | Method for making release paper with fog face function |
| CN103252311B (en) * | 2011-07-12 | 2014-10-15 | 苏州斯迪克新材料科技股份有限公司 | Method for manufacturing mist surface release films used for pressure sensitive adhesive (PSA) |
| CN103254751B (en) * | 2011-07-12 | 2016-12-28 | 苏州斯迪克新材料科技股份有限公司 | The processing technology of matte release film for adhesive tape |
| CN102350846B (en) * | 2011-07-12 | 2013-10-30 | 苏州斯迪克新材料科技股份有限公司 | Preparation method of novel cloudy-surface release paper |
| CN102327863B (en) * | 2011-07-12 | 2013-08-07 | 苏州斯迪克新材料科技股份有限公司 | Method for making fogging surface release film |
| CN102619142A (en) * | 2012-04-13 | 2012-08-01 | 苏州斯迪克新材料科技股份有限公司 | Matte release paper |
| CN102704332A (en) * | 2012-05-14 | 2012-10-03 | 斯迪克新型材料（江苏）有限公司 | Coating type release paper |
| CN105398247A (en) * | 2015-12-08 | 2016-03-16 | 广西北流神通镭射装饰材料有限公司 | High bright leather transfer film process |
| JP6707795B2 (en) * | 2016-03-29 | 2020-06-10 | リンテック株式会社 | Synthetic leather manufacturing process paper |
| CN106192578B (en) * | 2016-07-13 | 2018-01-30 | 潍坊恒联特种纸有限公司 | A kind of leather neutral sizing and its preparation technology |
| CN111057804B (en) * | 2020-01-02 | 2022-05-06 | 兴业皮革科技股份有限公司 | Patterned leather manufacturing method, leather and leather product |
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Address after: South Street, new urban lucky 071054 Hebei province Baoding City No. 6 Patentee after: China Lucky Group Corporation Patentee after: Lucky Film Co., Ltd. Address before: 071054 Kennan street, Hebei, Baoding, No. 6 Patentee before: Chinese Lekai Film Group Co Patentee before: Lucky Film Co., Ltd. |