A kind of preparation method of novel cloudy surface release liners
Technical field
The present invention relates to a kind of preparation method of novel cloudy surface release liners, the preparation method of a kind of novel cloudy surface release liners that particularly a kind of adhesion strength is high, peeling force is adjustable.
Background technology
Release liners is claimed barrier paper, separate paper again, is mainly used in to paste the adhesive layer that is used for the protective tapes surface on the surface of adhesive tape.Existing release liners generally is to drench film one deck leaching membrane layer (material of employing mainly contains polyethylene) on the surface of release liners ground paper layer, and the surface coated one deck parting agent layer (material of employing is mainly silicone oil) at leaching membrane layer obtains release liners then.But because the leaching membrane layer flatness is high; Poor adhesive force between mould release coating and the leaching membrane layer; When release liners attaches with the pad pasting that is coated with trowel adhesive; Cause the mould release coating on the release liners to be taken away easily, thereby form the mould release coating area that is difficult to clean out, destroyed whole pure, the uniformity of pad pasting in the local surfaces of pad pasting by the bigger adhesive of adhesion.
Summary of the invention
The present invention provides a kind of preparation method of novel cloudy surface release liners, and purpose is leaching membrane layer and the not high problem of mould release coating adhesion that solves release liners.
For achieving the above object, the technical scheme that the present invention adopts is: a kind of preparation method of novel cloudy surface release liners, mainly be made up of the following step:
(1) at a side surface of a release liners body paper, drench film one deck leaching membrane layer with drenching the film machine, wait said leaching membrane layer cooling after, obtain substrate layer at opposite side surface coated one deck adhesive layer of said release liners body paper, subsequent use;
(2) at surface coated one layer thickness of a thin layer be 0.2~2 micron cloudy surface coating agent, this cloudy surface coating agent is made up of the compound of following quality percentage composition:
Cloudy surface additive 2~6%;
Polyfunctional acrylic ester monomer 30~50%;
Initator 0.1~1%;
Solvent 45~66%;
Said cloudy surface additive is that particle diameter is at least a in the resin particle, aluminium oxide, magnesia, calcium oxide of 20 nanometers~2 micron;
Said polyfunctional acrylic ester monomer is at least a in methyl acrylate, ethyl acrylate, 2-methyl methacrylate, ethyl 2-methacrylate, methoxy poly (ethylene glycol) mono acrylic ester, alkoxide lauryl acrylate, acrylic acid stearyl, alkoxide nonyl phenol acrylic acid ester, epoxy acrylate, polyester acrylate, the polyfunctional group aliphatic urethane acrylate;
Said initator is benzophenone, para toluene sulfonamide, triphenyl phosphate or benzoin dimethylether;
Said solvent is toluene, ethyl acetate or positive butanone;
Adopt ultraviolet ray that said cloudy surface coating agent is shone, make said polyfunctional acrylic ester monomer under action of evocating, carry out polymerisation and obtain the cloudy surface coating, the surface-coated one deck mould release in said cloudy surface coating obtains the cloudy surface release layer again, and is subsequent use;
(3), said cloudy surface release layer and said substrate layer are fitted with the thin layer of said cloudy surface release layer adhesive layer towards said substrate layer.
Related content in the technique scheme is explained as follows:
1, in the such scheme, said mould release coating is to be used for isolating adhesive on the adhesive tape to make it and the release liners bonding, thus require its not with adhesive generation cross-linking reaction, the material of its use is mainly silicone oil.
2, in the such scheme, said ultraviolet ray (UV) mainly is meant UVA, UVB and UVC.
3, in the such scheme, methoxy poly (ethylene glycol) mono acrylic ester (Methoxy Glycol 350 Monoacrylate; Methoxy Polyethylene Glycol 350 Monoacrylate; CH
3O (CH
2CH
2O)
nOCCH=CH
2N=8~33), alkoxide lauryl acrylate (Alkoxylated Lauryl Acrylate), acrylic acid stearyl (Stearyl Acrylate), alkoxide nonyl phenol acrylic acid ester (Alkoxylated Nonyl Phenol Acrylate), epoxy acrylate (Epoxy Acrylate), polyester acrylate (Polyester Acrylate), the polyfunctional group aliphatic urethane acrylate can be available from the chemical Co., Ltd of Sartomer (Guangzhou).
4, in the such scheme, resin can be natural resins such as rosin, styrax; Phenolic resins, Corvic etc. are synthetic resin.Resin has the branch of natural resin and synthetic resin.Natural resin is meant the amorphous organic substance by occurring in nature animals and plants secretion gained, like rosin, amber, shellac etc.Synthetic resin is meant the resin product that is obtained through chemical reaction through chemical synthesis or some natural products by simple organic.Synthetic resin is the main component of plastics.
5, in the such scheme, the material of said leaching membrane layer is PETG, polypropylene, polyethylene or polyvinyl chloride.
6, in the such scheme, said film is pet film, polypropylene film, polyethylene film, polyvinyl chloride or cast polypropylene film.
Because the technique scheme utilization, the present invention compared with prior art has advantage and effect:
The present invention is at first to the surface coated polyester cloudy surface coating (material is a polyester) of thin layer; The surface has some even concaveconvex structures after treatment; In this surface coated silicon mould release coating, the notch place of said polyester cloudy surface coating surface is infiltrated in the bottom surface of silicon mould release coating under liquid state then, and silicon mould release coating is fixedly linked through notch and polyester cloudy surface coating after solidifying; Therefore, adhesion more firmly, reliably.But also can freely adjust the size of peeling force between silicon mould release coating and the release liners body paper through regulating the mist degree (being roughness) of cloudy surface coating.
Description of drawings
Accompanying drawing 1 is a sketch map of the present invention.
In the above accompanying drawing: 1, leaching membrane layer; 2, release liners original paper layer; 3, adhesive layer; 4, thin layer; 5, cloudy surface coating; 6, mould release coating.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
The preparation method of embodiment one, a kind of novel cloudy surface release liners
Shown in accompanying drawing 1, a kind of preparation method of novel cloudy surface release liners, making step is following:
At first, to the surface treatment of release liners body paper, make its surface not have paper scrap, stains.
(1) at a side surface of release liners body paper, drench film one deck PE leaching membrane layer 1 with drenching the film machine, wait said leaching membrane layer 1 cooling after, obtain substrate layer at opposite side surface coated one deck adhesive layer 3 of said release liners body paper, subsequent use.Drenching the film machine can use the high speed of Changzhou next adopted plastics machinery Co., Ltd production to extrude single face curtain coating compounding machine group A type.
(2) at surface coated one layer thickness of pet film layer be 0.2~2 micron cloudy surface coating agent, the prescription of this cloudy surface coating agent is seen table 1.
Adopt ultraviolet ray that said cloudy surface coating agent is shone, make said polyfunctional acrylic ester monomer under action of evocating, carry out polymerisation and obtain the cloudy surface coating, the surface-coated one deck mould release in said cloudy surface coating obtains the cloudy surface release layer again, and is subsequent use;
(3), said cloudy surface release layer and said substrate layer are fitted with the thin layer 4 of said cloudy surface release layer adhesive layer 3 towards said substrate layer.
The cloudy surface release liners that makes is referring to shown in the accompanying drawing 1; Stacked gradually for 6 six layers by leaching membrane layer 1, release liners original paper layer 2, adhesive layer 3, thin layer 4, cloudy surface coating 5 and mould release coating and to constitute, the surface roughness of said cloudy surface coating 5 towards the surface of said mould release coating 6 is 2.821um~3.324um.Testing standard: ISO4287:1998.Roughness tester: the TR200 hand-held roughmeter of Beijing epoch peak Science and Technology Ltd. production.Said cloudy surface coating 5 is a polyester cloudy surface coating.At first the one side of release liners original paper layer 2 (common paper) being drenched membrane material is first leaching membrane layer 1 of PE; Another side coating one deck adhesive layer 3, applying thin film layer 4 on adhesive layer 3 again is then in the surface coated polyester cloudy surface coating 5 (material is a polyester) of thin layer 4; The surface has some even concaveconvex structures after treatment; In this surface coated silicon mould release coating 6, the notch place on said polyester cloudy surface coating 5 surfaces is infiltrated in the bottom surface of silicon mould release coating 6 under liquid state then, and silicon mould release coating 6 is fixedly linked through notch and polyester cloudy surface coating 5 after solidifying; Therefore, adhesion more firmly, reliably.But also can freely adjust the size of peeling force between silicon mould release coating 6 and the release liners body paper through regulating the mist degree (being roughness) of cloudy surface coating 5.
Embodiment two~five: a kind of its preparation method of cloudy surface release liners
1, method is with embodiment two.
2, the relevant material of embodiment two~five uses is following:
(1) material of leaching membrane layer: embodiment three, polyvinyl chloride; Embodiment four, PETG; Embodiment five, polyethylene; Embodiment six, polypropylene.
(2) thin layer: embodiment three, polypropylene film; Embodiment four, polyethylene film; Embodiment five, cast polypropylene film; Embodiment six pet films.
3, the prescription of cloudy surface coating agent is seen table 1.
Table 1
? |
Embodiment one |
Embodiment two |
Embodiment three |
Embodiment four |
Embodiment five |
The cloudy surface additive |
4% |
5% |
2% |
2.5% |
6% |
The polyfunctional acrylic ester monomer |
34.5% |
30% |
43% |
45% |
44.3% |
Initator |
0.2% |
0.5% |
0.7% |
1% |
0.7% |
Solvent |
61.3% |
64.5% |
54.3% |
51.5% |
49% |
Annotate: in the table 1:
1, cloudy surface additive: embodiment one, magnesia; Embodiment two, organic resin; Embodiment three, aluminium oxide; Embodiment four, calcium oxide and organic resin are according to the mass ratio of 1:1; Embodiment five, calcium oxide.
2, polyfunctional acrylic ester monomer: embodiment one, alkoxide lauryl acrylate; Embodiment two, ethyl acrylate and acrylic acid stearyl mix according to the mass ratio of 1:5 between the two; Embodiment three, polyester acrylate; Embodiment four, alkoxide nonyl phenol acrylic acid ester; Embodiment five, alkoxide lauryl acrylate.
3, initator: embodiment one, para toluene sulfonamide; Embodiment two, triphenyl phosphate; Embodiment three, benzoin dimethylether; Embodiment four, benzophenone; Embodiment five, para toluene sulfonamide.
4, solvent: embodiment one~two, ethyl acetate; Embodiment three~five, methyl acetone.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.