CN112175539A - UV (ultraviolet) photocuring 3D protective film and preparation method thereof - Google Patents
UV (ultraviolet) photocuring 3D protective film and preparation method thereof Download PDFInfo
- Publication number
- CN112175539A CN112175539A CN202011106543.3A CN202011106543A CN112175539A CN 112175539 A CN112175539 A CN 112175539A CN 202011106543 A CN202011106543 A CN 202011106543A CN 112175539 A CN112175539 A CN 112175539A
- Authority
- CN
- China
- Prior art keywords
- layer
- parts
- polyurethane acrylate
- sensitive adhesive
- base material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
- C09J2475/003—Presence of polyurethane in the primer coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a UV (ultraviolet) photocuring 3D protective film and a preparation method thereof, and relates to the technical field of mobile phone protective films. The protection film includes in proper order: the adhesive comprises a base material layer, a first organic silicon pressure-sensitive adhesive layer, a polyurethane acrylate hardened layer, a 0-degree special optical-grade base material layer, a UV (ultraviolet) light-cured polyurethane acrylate layer, a second organic silicon pressure-sensitive adhesive layer and a fluorine release film layer. The preparation method comprises the following steps: preparing a 0-degree special optical-grade base material layer; coating a polyurethane acrylate hardened layer on the 0-degree special optical-grade base material layer; coating a UV (ultraviolet) light-cured polyurethane acrylate layer on the other surface of the 0-degree special optical-grade base material layer; coating a second organic silicon pressure-sensitive adhesive protective layer on the UV photocuring polyurethane acrylate layer, and simultaneously attaching a fluorine release film layer; coating a first organic silicon pressure-sensitive adhesive protective layer on one surface of the base material layer, and simultaneously attaching a polyurethane acrylate hardening layer. The invention adopts a new laminated design structure, does not need hot bending pretreatment, and can be attached to a 3D curved screen in a planar film form.
Description
Technical Field
The invention relates to the technical field of mobile phone protective films, in particular to a UV (ultraviolet) photocuring 3D protective film and a preparation method thereof.
TDI: 2113 toluene diisocyanate, MDI: 4,4' -diphenylmethane diisocyanate, TPDI: an aliphatic isocyanate; MIBK: methyl isobutyl ketone; MEK: methyl ethyl ketone; BOPET: biaxially stretching a polyester film; PET: a polyester film.
Background
With the development of full-face screens and the technological progress of 3D curved-face screens, more and more mobile phone manufacturers adopt large 3D curved-face mobile phone front cover plates with side radian larger than or equal to 50 degrees. The existing mobile phone protective film in the market is also required to have the characteristics that after hot press forming, the existing mobile phone protective film presents a corresponding 3D curved surface shape, and after being attached to a mobile phone cover plate, the existing mobile phone protective film cannot warp and rebound. The existing common 3D protective film with the PET + TPU structure needs high-temperature hot bending forming above 180 ℃, the curved surface part of the side edge is easy to warp and rebound after the screen is attached, the protective film material is soft, and the nail scraping resistance mark is poor, so that the use experience effect of a user is influenced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a solution for a 3D protection film with a brand-new stacked design, so as to solve the technical problems of the existing common 3D protection film.
In a first aspect of the present invention, there is provided a UV light-curable 3D protective film, which is a multilayer structure, sequentially comprising: the adhesive comprises a base material layer, a first organic silicon pressure-sensitive adhesive layer, a polyurethane acrylate hardened layer, a 0-degree special optical-grade base material layer, a UV (ultraviolet) light-cured polyurethane acrylate layer, a second organic silicon pressure-sensitive adhesive layer and a fluorine release film layer.
Preferably, the thickness of the substrate layer is 25-100 μm.
Preferably, the first silicone pressure sensitive adhesive layer has a thickness of 5 to 15 μm.
Preferably, the thickness of the urethane acrylate hardened layer is 1-10 μm.
Preferably, the thickness of the special 0 ° angle optical grade substrate layer is 25-100 μm.
Preferably, the thickness of the UV light-cured polyurethane acrylate layer is 20-60 μm.
Preferably, the second silicone pressure sensitive adhesive layer has a thickness of 10 to 50 μm.
Preferably, the thickness of the fluorine release film layer is 25-75 μm.
Preferably, the substrate layer is a BOPET substrate layer or a PET substrate layer.
Preferably, the 0-degree special optical-grade substrate layer is PET, and the birefringence optical axis angle of the substrate layer is parallel to the polarization angle of the OPLED screen of the mobile phone, so that the optical fingerprint imaging unlocking under the screen cannot be influenced.
Preferably, the raw material composition of the first organic silicon pressure-sensitive adhesive layer and the second organic silicon pressure-sensitive adhesive layer comprises: 5-50 parts of crude silicone rubber, 5-50 parts of silicone resin, 0.2-2.5 parts of hydrogen-containing silicone oil, 0.2-2.5 parts of adhesion promoter, 1-5 parts of complex platinum catalyst and 40-100 parts of diluent.
Preferably, the silicone gum comprises a vinyl terminated polydimethylsiloxane or a vinyl terminated polydiphenyl-dimethylsiloxane.
Preferably, the silicone resin comprises MQ silicone resin, and the molecular weight is 10000-1000000.
Preferably, the hydrogen content of the hydrogen-containing silicone oil is 0.5-10 wt%.
Preferably, the adhesion promoter comprises a polar group terminated silane coupling agent.
Preferably, the Pt content in the complex type platinum catalyst is 3000-6000 ppm.
Preferably, the raw material composition of the UV light-cured polyurethane acrylate layer comprises: 10-50 parts of polyether polyol, 5-20 parts of isocyanate, 0.5-5 parts of photoinitiator and 40-100 parts of diluent.
Preferably, the polyether polyol is a vinyl-terminated organic polyol polymer with the molecular weight of 5000-50000.
Preferably, the isocyanate is one or a combination of TDI, MDI, IPDI.
Preferably, the photoinitiator comprises one or more of 2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-propanone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide.
Preferably, the diluent is a combination of cyclohexanone, ethyl acetate, toluene and butanone.
Preferably, the raw material composition of the urethane acrylate hardened layer comprises: 10-50 parts of polyurethane acrylic resin, 0.5-5 parts of photoinitiator and 50-100 parts of diluent.
Preferably, the urethane acrylic resin includes an organic fluorine-modified acrylic resin.
Preferably, the photoinitiator comprises one or more of 2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-propanone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide.
Preferably, the diluent comprises one or more of ethyl acetate, toluene, MIBK, MEK.
In a second aspect of the present invention, a method for preparing a UV light-curable 3D protective film includes the steps of:
s1, performing melt extrusion, uniformly stretching longitudinally to obtain a required length, uniformly stretching transversely to obtain a required width, and measuring and screening a polarization angle to obtain a 0-degree special optical substrate layer;
s2, mixing the raw materials of the polyurethane acrylate hardened layer, and coating the mixture on one surface of the 0-degree special optical-grade base material layer to obtain the polyurethane acrylate hardened layer;
s3, mixing raw materials of the UV light-cured polyurethane acrylate layer, and coating the mixture on the other surface of the 0-degree special optical-level base material layer to obtain the UV light-cured polyurethane acrylate layer;
s4, mixing raw materials of a second organic silicon pressure-sensitive adhesive protective layer, coating the mixture on the UV photocuring polyurethane acrylate layer, and simultaneously attaching a fluorine release film layer to obtain the second organic silicon pressure-sensitive adhesive protective layer;
s5, mixing the raw materials of the first organic silicon pressure-sensitive adhesive protection layer, coating the mixture on one surface of a base material layer, and simultaneously attaching the polyurethane acrylate hardened layer to obtain the first organic silicon pressure-sensitive adhesive protection layer; through the steps, the UV light curing 3D protective film can be obtained.
Preferably, the coating in the step S2 adopts a gravure roll coating mode, the coating in the step S3 adopts a Slot-die or comma coating mode, the coating in the step S4 adopts a Slot-die or comma coating mode, and the coating in the step S5 adopts a Slot-die or comma coating mode.
The invention can obtain at least one of the following beneficial effects:
1. the UV photocuring 3D protective film disclosed by the invention adopts a new laminated design structure, the material does not need hot bending pretreatment, and a planar film form can be attached to a 3D curved screen, so that the process instability caused by hot bending is reduced, and the cost is reduced.
2. According to the UV photocuring 3D protective film, after the screen is attached, UV photocuring is carried out on the protective film, the protective film can be perfectly attached to the screen, and the problem of warping and rebounding caused by attachment can be effectively solved. The 0-degree special optical-grade base material layer and the UV photocuring polyurethane acrylate layer are made of flexible materials before photocuring, and are attached to the 3D curved screen without warping; after the screen is attached, all the multilayer structures are simultaneously subjected to UV photocuring, so that the hardness is increased, and the nail print resistance and the surface hardness are greatly improved.
3. According to the UV photocuring 3D protective film disclosed by the invention, after UV photocuring, the protective film is integrally hardened, the hardness reaches 3H, and the surface of the protective film is provided with a hardened layer, so that the protective film has the characteristics of scratch resistance, high wear resistance, high hardness, nail print resistance and the like.
4. The invention uses the 0-degree special optical-grade substrate layer, the birefringent optical axis angle of the substrate layer is parallel to the polarization angle of the OPLED screen of the mobile phone, the substrate layer has better optical performance, and has no rainbow lines and interference lines, and the unlocking of optical fingerprint imaging under the screen can not be influenced.
5. The organic silicon pressure-sensitive adhesive is high in viscosity, so that the protective film is firmer, and the problem that the conventional adhesive is easy to rebound and warp on the arc surface after being attached to the 3D curved screen is solved; and the self-defoaming performance of the organic silicon pressure-sensitive adhesive on the surface of the screen is good.
6. The preparation method can simultaneously prepare a multilayer structure, and only carries out one-time UV light curing, thereby simplifying the preparation process and improving the production efficiency; the screen protective film prepared by the method has stable quality and high production efficiency.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a UV light-cured 3D protective film is of a multilayer structure and sequentially comprises: the film comprises a BOPET substrate layer with the thickness of 30 micrometers, a first organic silicon pressure-sensitive adhesive layer with the thickness of 15 micrometers, a polyurethane acrylate hardened layer with the thickness of 1 micrometer, a 0-degree special optical-grade substrate layer with the thickness of 30 micrometers, a UV (ultraviolet) photo-curing polyurethane acrylate layer with the thickness of 25 micrometers, a second organic silicon pressure-sensitive adhesive layer with the thickness of 50 micrometers and a fluorine release film layer with the thickness of 70 micrometers.
The preparation method of the UV light curing 3D protective film of the embodiment includes the following steps:
s1, carrying out melt extrusion on PET, then uniformly stretching longitudinally to obtain a required length, uniformly stretching transversely to obtain a required width, and carrying out polarization angle measurement and screening to obtain a 0-degree special optical substrate layer;
s2, taking the raw materials of the polyurethane acrylate hardened layer: 15 parts of polyurethane acrylic resin, 0.5 part of photoinitiator 2-hydroxy-2-methyl-1-phenyl acetone and 50 parts of diluent ethyl acetate; after being uniformly mixed, the mixture is coated on one surface of a 0-degree special optical-grade base material layer by adopting a micro gravure roller coating mode to obtain a polyurethane acrylate hardened layer;
s3, taking the raw materials of the UV light-cured polyurethane acrylate layer: 10 parts of vinyl-terminated organic polyol polymer with the molecular weight of 5000-50000, 5 parts of isocyanate TDI, 0.5 part of photoinitiator 2-hydroxy-2-methyl-1-phenyl acetone and 50 parts of diluent ethyl acetate; after being uniformly mixed, the mixture is coated on the other surface of the 0-degree special optical-grade base material layer in a Slot-die coating mode to obtain a UV (ultraviolet) light-cured polyurethane acrylate layer;
s4, taking the raw materials of the second organic silicon pressure-sensitive adhesive protective layer: 10 parts of vinyl-terminated polydimethylsiloxane, 10 parts of MQ silicon resin with the molecular weight of 10000-100000, 0.5 part of hydrogen-containing silicone oil with the hydrogen content of 0.5 wt%, 0.5 part of vinyl triethoxysilane, 1.5 parts of complex platinum catalyst with the Pt content of 3000ppm and 50 parts of ethyl acetate serving as a diluent; after being uniformly mixed, the mixture is coated on a UV photocuring polyurethane acrylate layer in a Slot-die coating mode, and a fluorine release film layer is attached to the UV photocuring polyurethane acrylate layer to obtain a second organic silicon pressure-sensitive adhesive protective layer;
s5, taking the raw materials of the first organic silicon pressure-sensitive adhesive protective layer: 10 parts of vinyl-terminated polydimethylsiloxane, 10 parts of MQ silicon resin with the molecular weight of 10000-100000, 0.5 part of hydrogen-containing silicone oil with the hydrogen content of 0.5%, 0.5 part of vinyl triethoxysilane, 1.5 parts of chloroplatinic acid catalyst with the Pt content of 3000ppm and 50 parts of ethyl acetate serving as a diluent; after mixing, coating on one surface of the base material layer in a Slot-die coating mode, and simultaneously attaching a polyurethane acrylate hardened layer to obtain a first organic silicon pressure-sensitive adhesive protective layer;
through the steps, the UV photocuring 3D protective film can be obtained; after the screen was attached, all the multilayer structures were simultaneously UV light cured.
Example 2:
a UV light-cured 3D protective film is of a multilayer structure and sequentially comprises: the adhesive comprises a PET substrate layer with the thickness of 90 micrometers, a first organic silicon pressure-sensitive adhesive layer with the thickness of 5 micrometers, a polyurethane acrylate hardened layer with the thickness of 10 micrometers, a 0-degree special optical-grade substrate layer with the thickness of 90 micrometers, a UV (ultraviolet) photo-curing polyurethane acrylate layer with the thickness of 55 micrometers, a second organic silicon pressure-sensitive adhesive layer with the thickness of 15 micrometers and a fluorine release film layer with the thickness of 25 micrometers.
The preparation method of the UV light curing 3D protective film of the embodiment includes the following steps:
s1, carrying out melt extrusion on PET, then uniformly stretching longitudinally to obtain a required length, uniformly stretching transversely to obtain a required width, and carrying out polarization angle measurement and screening to obtain a 0-degree special optical substrate layer;
s2, taking the raw materials of the polyurethane acrylate hardened layer: 45 parts of organic fluorine modified acrylic resin, 2 parts of photoinitiator 1-hydroxycyclohexyl phenyl ketone, 2 parts of 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone, 40 parts of diluent toluene and 50 parts of ethyl acetate; after being uniformly mixed, the mixture is coated on one surface of a 0-degree special optical-grade base material layer by adopting a micro gravure roller coating mode to obtain a polyurethane acrylate hardened layer;
s3, taking the raw materials of the UV light-cured polyurethane acrylate layer: 45 parts of vinyl-terminated organic polyol polymer with the molecular weight of 10000-50000, 20 parts of isocyanate MDI, 2 parts of photoinitiator 1-hydroxycyclohexyl phenyl ketone, 2 parts of 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone, 40 parts of diluent toluene and 50 parts of ethyl acetate; after being uniformly mixed, the mixture is coated on the other surface of the 0-degree special optical-grade base material layer by adopting a comma coating mode to obtain a UV (ultraviolet) photo-curing polyurethane acrylate layer;
s4, taking the raw materials of the second organic silicon pressure-sensitive adhesive protective layer: 20 parts of vinyl-terminated polydimethylsiloxane, 20 parts of MQ silicon resin with the molecular weight of 10000-1000000, 2.2 parts of hydrogen-containing silicone oil with the hydrogen content of 10 wt%, 2.2 parts of vinyl trimethoxy silane, 5 parts of complex platinum catalyst with the Pt content of 4000ppm, 40 parts of diluent toluene and 50 parts of ethyl acetate; after being uniformly mixed, the mixture is coated on a UV photocuring polyurethane acrylate layer by adopting a comma coating mode, and a fluorine release film layer is attached to the mixture at the same time, so that a second organic silicon pressure-sensitive adhesive protective layer is obtained;
s5, taking the raw materials of the first organic silicon pressure-sensitive adhesive protective layer: 20 parts of vinyl-terminated polydimethylsiloxane, 20 parts of MQ silicon resin with the molecular weight of 10000-1000000, 2.2 parts of hydrogen-containing silicone oil with the hydrogen content of 10%, 2.2 parts of vinyl trimethoxy silane, 5 parts of chloroplatinic acid catalyst with the Pt content of 4000ppm, 40 parts of diluent toluene and 50 parts of ethyl acetate; after mixing, coating on one surface of the base material layer by adopting a comma coating mode, and simultaneously attaching a polyurethane acrylate hardening layer to obtain a first organic silicon pressure-sensitive adhesive protective layer;
through the steps, the UV photocuring 3D protective film can be obtained; after the screen was attached, all the multilayer structures were simultaneously UV light cured.
Example 3:
a UV light-cured 3D protective film is of a multilayer structure and sequentially comprises: the adhesive comprises a PET substrate layer with the thickness of 50 microns, a first organic silicon pressure-sensitive adhesive layer with the thickness of 10 microns, a polyurethane acrylate hardened layer with the thickness of 5 microns, a 0-degree special optical-grade substrate layer with the thickness of 50 microns, a UV (ultraviolet) light-cured polyurethane acrylate layer with the thickness of 40 microns, a second organic silicon pressure-sensitive adhesive layer with the thickness of 30 microns and a fluorine release film layer with the thickness of 50 microns.
The preparation method of the UV light curing 3D protective film of the embodiment includes the following steps:
s1, carrying out melt extrusion on PET, then uniformly stretching longitudinally to obtain a required length, uniformly stretching transversely to obtain a required width, and carrying out polarization angle measurement and screening to obtain a 0-degree special optical substrate layer;
s2, taking the raw materials of the polyurethane acrylate hardened layer: 30 parts of organic fluorine modified acrylic resin, 1 part of photoinitiator 2-hydroxy-2-methyl-1-phenyl acetone, 1 part of 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 35 parts of diluent toluene and 35 parts of MIBK; after being uniformly mixed, the mixture is coated on one surface of a 0-degree special optical-grade base material layer by adopting a micro gravure roller coating mode to obtain a polyurethane acrylate hardened layer;
s3, taking the raw materials of the UV light-cured polyurethane acrylate layer: 30 parts of vinyl-terminated organic polyol polymer with the molecular weight of 10000-50000, 10 parts of isocyanate MDI, 5 parts of IPDI, 1 part of photoinitiator 2-hydroxy-2-methyl-1-phenyl acetone, 1 part of 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 35 parts of diluent toluene and 35 parts of butanone; after being uniformly mixed, the mixture is coated on the other surface of the 0-degree special optical-grade base material layer by adopting a comma coating mode to obtain a UV (ultraviolet) photo-curing polyurethane acrylate layer;
s4, taking the raw materials of the second organic silicon pressure-sensitive adhesive protective layer: 30 parts of vinyl-terminated polydiphenyl-dimethyl siloxane, 30 parts of MQ silicon resin with the molecular weight of 10000-1000000, 1 part of hydrogen-containing silicone oil with the hydrogen content of 5 wt%, 1 part of vinyl tri (beta-methoxyethoxy) silane, 3 parts of complex platinum catalyst with the Pt content of 5000ppm, 35 parts of diluent toluene and 35 parts of butanone; after being uniformly mixed, the mixture is coated on a UV photocuring polyurethane acrylate layer by adopting a comma coating mode, and a fluorine release film layer is attached to the mixture at the same time, so that a second organic silicon pressure-sensitive adhesive protective layer is obtained;
s5, taking the raw materials of the first organic silicon pressure-sensitive adhesive protective layer: 30 parts of vinyl-terminated polydiphenyl-dimethyl siloxane, 30 parts of MQ silicon resin with the molecular weight of 10000-1000000, 1 part of hydrogen-containing silicone oil with the hydrogen content of 5%, 1 part of vinyl tri (beta-methoxyethoxy) silane, 3 parts of chloroplatinic acid catalyst with the Pt content of 5000ppm, 35 parts of diluent toluene and 35 parts of butanone; after mixing, coating on one surface of the base material layer by adopting a comma coating mode, and simultaneously attaching a polyurethane acrylate hardening layer to obtain a first organic silicon pressure-sensitive adhesive protective layer;
through the steps, the UV photocuring 3D protective film can be obtained; after the screen was attached, all the multilayer structures were simultaneously UV light cured.
Example 4:
a UV light-cured 3D protective film is of a multilayer structure and sequentially comprises: the adhesive comprises a PET substrate layer with the thickness of 70 microns, a first organic silicon pressure-sensitive adhesive layer with the thickness of 8 microns, a polyurethane acrylate hardened layer with the thickness of 8 microns, a 0-degree special optical-grade substrate layer with the thickness of 70 microns, a UV (ultraviolet) photo-curing polyurethane acrylate layer with the thickness of 30 microns, a second organic silicon pressure-sensitive adhesive layer with the thickness of 20 microns and a fluorine release film layer with the thickness of 6 microns.
The preparation method of the UV light curing 3D protective film of the embodiment includes the following steps:
s1, carrying out melt extrusion on PET, then uniformly stretching longitudinally to obtain a required length, uniformly stretching transversely to obtain a required width, and carrying out polarization angle measurement and screening to obtain a 0-degree special optical substrate layer;
s2, taking the raw materials of the polyurethane acrylate hardened layer: 40 parts of organic fluorine modified acrylic resin, 2 parts of 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone as a photoinitiator, 1 part of 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 30 parts of MIBK as a diluent and 50 parts of MEK; after being uniformly mixed, the mixture is coated on one surface of a 0-degree special optical-grade base material layer by adopting a micro gravure roller coating mode to obtain a polyurethane acrylate hardened layer;
s3, taking the raw materials of the UV light-cured polyurethane acrylate layer: 40 parts of vinyl-terminated organic polyol polymer with the molecular weight of 10000-40000, 10 parts of isocyanate TDI (toluene diisocynate), 10 parts of IPDI (isophorone diisocyanate), 2 parts of photoinitiator 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone, 1 part of 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, 30 parts of diluent ethyl acetate and 50 parts of butanone; after being uniformly mixed, the mixture is coated on the other surface of the 0-degree special optical-grade base material layer in a Slot-die coating mode to obtain a UV (ultraviolet) light-cured polyurethane acrylate layer;
s4, taking the raw materials of the second organic silicon pressure-sensitive adhesive protective layer: 40 parts of vinyl-terminated polydiphenyl-dimethyl siloxane, 40 parts of MQ silicon resin with the molecular weight of 10000-1000000, 1.5 parts of hydrogen-containing silicone oil with the hydrogen content of 7.5 wt%, 1.5 parts of vinyl tri (beta-methoxyethoxy) silane, 4 parts of chloroplatinic acid catalyst with the Pt content of 6000ppm, 30 parts of ethyl acetate serving as a diluent and 50 parts of butanone; after being uniformly mixed, the mixture is coated on a UV photocuring polyurethane acrylate layer in a Slot-die coating mode, and a fluorine release film layer is attached to the UV photocuring polyurethane acrylate layer to obtain a second organic silicon pressure-sensitive adhesive protective layer;
s5, taking the raw materials of the first organic silicon pressure-sensitive adhesive protective layer: 40 parts of vinyl-terminated polydiphenyl-dimethyl siloxane, 40 parts of MQ silicon resin with the molecular weight of 10000-1000000, 1.5 parts of hydrogen-containing silicone oil with the hydrogen content of 7.5%, 1.5 parts of vinyl tri (beta-methoxyethoxy) silane, 4 parts of complex platinum catalyst with the Pt content of 6000ppm, 30 parts of ethyl acetate serving as a diluent and 50 parts of butanone; after mixing, coating on one surface of the base material layer in a Slot-die coating mode, and simultaneously attaching a polyurethane acrylate hardened layer to obtain a first organic silicon pressure-sensitive adhesive protective layer;
through the steps, the UV photocuring 3D protective film can be obtained; after the screen was attached, all the multilayer structures were simultaneously UV light cured.
Comparative example 1:
the same as in example 3 was followed except that the 0 ° special optical grade substrate layer was replaced with a PET substrate layer.
Comparative example 2:
removing the first organic silicon pressure sensitive adhesive layer, coating the raw material of the polyurethane acrylate hardened layer on one surface of the 0-degree special optical-grade base material layer in step S2, and simultaneously laminating the base material layer without the operation of step S5. The rest is the same as in example 3.
Comparative example 3:
the first silicone pressure-sensitive adhesive layer and the second silicone pressure-sensitive adhesive layer were replaced with an acrylic pressure-sensitive adhesive, and the remaining components were the same as in example 3.
Comparative example 4:
the UV light-curable urethane acrylate layer was replaced with a UV light-curable hardening liquid of a conventional acrylic resin, and the remaining components were the same as in example 3.
The UV light-cured 3D protective films prepared in examples 1-4 and comparative examples 1-2 were subjected to performance testing:
(1) the pencil hardness is tested by adopting a hand-operated pencil hardness tester, the test standard is in reference to GB/T-6739-.
(2) The steel wool wear resistance test adopts an alcohol friction resistance tester to test, a sample wafer is prepared to be 50mm multiplied by 50mm and is fixed on a test bench, 0000-grade steel wool is wound on a friction head with the size of 20mm multiplied by 20mm, and 1000g weight is applied to cycle for 1000 times to observe the surface scratch state.
(3) The light transmittance and the haze were measured by a haze meter. The higher the transmission, the lower the haze the better the surface optical properties.
(4) And (3) wettability testing, namely preparing a sample wafer into a size of 70mm multiplied by 150mm, tearing off the release film, horizontally placing the sample on clean glass, lightly touching the sample with a finger, and testing the complete wetting time, wherein the shorter the time, the better the wetting property is.
(5)3D attached anti-bounce test, prepare the sample wafer for 75mm 160mm size, after laminating the cell-phone screen completely, carry out the experiment test with higher speed, the phenomenon such as the perk can appear for a long time, the bubble, the laminating is not firm, and the longer the time, it is better to show its laminating nature.
(6) Testing a nail print (nail print recovery property) by adopting a stopwatch, preparing a sample wafer into a size of 70mm multiplied by 150mm, attaching a mobile phone screen with a water contact angle larger than 110 degrees, firstly, slightly scraping the surface of a protective sticker by using a nail, and observing the scratch degree; second, the patch surface was scratched strongly with a fingernail to test the recovery time for the appearance of white thin lines in the scratch.
The results are shown in Table 1.
TABLE 1
As can be seen from the data in table 1, the UV light-cured 3D protective film provided by the embodiment of the invention has the advantages of high surface hardness, scratch resistance, wear resistance, sensitive touch, high image definition, more delicate image quality, and higher light transmittance. Compared with the example 3, the surface hardness, the wear resistance, the haze, the 3D attachment rebound resistance and the nail print resistance of the obtained 3D protective film are greatly reduced by replacing the 0-degree special optical-grade base material layer with a PET base material layer (comparative example 1), and particularly the influence on the haze, the 3D attachment rebound resistance and the nail print resistance is great; the wear resistance, haze, wettability, 3D attachment rebound resistance and nail print resistance of the obtained 3D protective film are greatly reduced by removing the first organic silicon pressure-sensitive adhesive layer (comparative example 2), and the influence on the wettability, the 3D attachment rebound resistance and the nail print resistance is particularly great; the first organic silicon pressure-sensitive adhesive layer and the second organic silicon pressure-sensitive adhesive layer are replaced by acrylic pressure-sensitive adhesive (comparative example 3), the surface hardness, the wear resistance, the haze, the wettability, the 3D attachment rebound resistance and the nail print resistance of the obtained 3D protective film are reduced to a great extent, and the influences on the wear resistance, the wettability, the 3D attachment rebound resistance and the nail print resistance are great; the surface hardness, the wear resistance, the haze, the wettability, the 3D attachment rebound resistance and the nail print resistance of the obtained 3D protective film are greatly reduced by replacing the UV light curing polyurethane acrylate layer with the UV light curing hardening liquid of the conventional acrylic resin (comparative example 4), and particularly the influence on the surface hardness, the wettability, the 3D attachment rebound resistance and the nail print resistance is great.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a UV photocuring 3D protection film which is multilayer structure, includes in proper order: the adhesive comprises a base material layer, a first organic silicon pressure-sensitive adhesive layer, a polyurethane acrylate hardened layer, a 0-degree special optical-grade base material layer, a UV (ultraviolet) light-cured polyurethane acrylate layer, a second organic silicon pressure-sensitive adhesive layer and a fluorine release film layer.
2. The UV curable 3D protective film according to claim 1, wherein the thickness of the base material layer is 25-100 μm; and/or
The thickness of the first organic silicon pressure-sensitive adhesive layer is 5-15 mu m; and/or
The thickness of the polyurethane acrylate hardened layer is 1-10 mu m; and/or
The thickness of the special 0-degree optical-grade base material layer is 25-100 mu m; and/or
The thickness of the UV light-cured polyurethane acrylate layer is 20-60 mu m; and/or
The thickness of the second organic silicon pressure-sensitive adhesive layer is 10-50 mu m; and/or
The thickness of the fluorine release film layer is 25-75 μm.
3. The UV-curable 3D protective film according to claim 1, wherein the substrate layer is a BOPET substrate layer or a PET substrate layer.
4. The UV-curable 3D protective film according to claim 1, wherein the 0 ° special optical-grade substrate layer is PET, and the birefringence optical axis angle thereof is parallel to the polarization angle of an OPLED screen of a mobile phone.
5. The UV curable 3D protective film according to claim 1, wherein the raw material composition of the first silicone pressure sensitive adhesive layer and the second silicone pressure sensitive adhesive layer comprises: 5-50 parts of crude silicone rubber, 5-50 parts of silicone resin, 0.2-2.5 parts of hydrogen-containing silicone oil, 0.2-2.5 parts of adhesion promoter, 1-5 parts of complex platinum catalyst and 40-100 parts of diluent.
6. The UV-curable 3D protective film according to claim 4, wherein the silicone gum comprises vinyl terminated polydimethylsiloxane or vinyl terminated polydiphenyl-dimethylsiloxane;
the silicone resin comprises MQ silicone resin, and the molecular weight is 10000-1000000;
the hydrogen content of the hydrogen-containing silicone oil is 0.5-10 wt%;
the adhesion promoter comprises a silane coupling agent terminated by a polar group;
the Pt content in the complex type platinum catalyst is 3000-6000 ppm.
7. The UV-curable 3D protective film according to claim 1, wherein the UV-curable polyurethane acrylate layer comprises the following raw material compositions: 10-50 parts of polyether polyol, 5-20 parts of isocyanate, 0.5-5 parts of photoinitiator and 40-100 parts of diluent;
the polyether polyol is an organic polyol polymer which is vinyl-terminated and has a molecular weight of 5000-50000;
the isocyanate is one or a combination of TDI, MDI and IPDI;
the photoinitiator comprises one or more of 2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone and 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide;
the diluent is a combination of cyclohexanone, ethyl acetate, toluene and butanone.
8. The UV-curable 3D protective film according to claim 1, wherein the raw material composition of the urethane acrylate hardened layer comprises: 10-50 parts of polyurethane acrylic resin, 0.5-5 parts of photoinitiator and 50-100 parts of diluent;
the polyurethane acrylic resin comprises organic fluorine modified acrylic resin;
the photoinitiator comprises one or more of 2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone and 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide;
the diluent comprises one or more of ethyl acetate, toluene, MIBK, MEK.
9. A preparation method of a UV (ultraviolet) light curing 3D protective film is characterized by comprising the following steps:
s1, performing melt extrusion, uniformly stretching longitudinally to obtain a required length, uniformly stretching transversely to obtain a required width, and measuring and screening a polarization angle to obtain a 0-degree special optical substrate layer;
s2, mixing the raw materials of the polyurethane acrylate hardened layer, and coating the mixture on one surface of the 0-degree special optical-grade base material layer to obtain the polyurethane acrylate hardened layer;
s3, mixing raw materials of the UV light-cured polyurethane acrylate layer, and coating the mixture on the other surface of the 0-degree special optical-level base material layer to obtain the UV light-cured polyurethane acrylate layer;
s4, mixing raw materials of a second organic silicon pressure-sensitive adhesive protective layer, coating the mixture on the UV photocuring polyurethane acrylate layer, and simultaneously attaching a fluorine release film layer to obtain the second organic silicon pressure-sensitive adhesive protective layer;
s5, mixing the raw materials of the first organic silicon pressure-sensitive adhesive protection layer, coating the mixture on one surface of a base material layer, and simultaneously attaching the polyurethane acrylate hardened layer to obtain the first organic silicon pressure-sensitive adhesive protection layer; through the steps, the UV light curing 3D protective film can be obtained.
10. The method for preparing a UV photocuring 3D protective film according to claim 9, wherein the coating in the step S2 adopts a gravure roll coating mode, the coating in the step S3 adopts a Slot-die or comma coating mode, the coating in the step S4 adopts a Slot-die or comma coating mode, and the coating in the step S5 adopts a Slot-die or comma coating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106543.3A CN112175539B (en) | 2020-10-16 | 2020-10-16 | UV (ultraviolet) photocuring 3D protective film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106543.3A CN112175539B (en) | 2020-10-16 | 2020-10-16 | UV (ultraviolet) photocuring 3D protective film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112175539A true CN112175539A (en) | 2021-01-05 |
| CN112175539B CN112175539B (en) | 2022-07-12 |
Family
ID=73951199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011106543.3A Active CN112175539B (en) | 2020-10-16 | 2020-10-16 | UV (ultraviolet) photocuring 3D protective film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112175539B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113563823A (en) * | 2021-07-29 | 2021-10-29 | 江苏斯迪克新材料科技股份有限公司 | 3D protective film attached to curved screen and preparation method thereof |
| CN113698861A (en) * | 2021-02-04 | 2021-11-26 | 广东鼎立森新材料有限公司 | Dual-curing coating for curved surface and application thereof |
| CN113789135A (en) * | 2021-08-26 | 2021-12-14 | 江苏斯迪克新材料科技股份有限公司 | Optical curved surface silica gel protective film and preparation method thereof |
| CN113913125A (en) * | 2021-10-20 | 2022-01-11 | 江西昊泽光学膜科技有限公司 | Ultra-clear flexible glass protective film and preparation method and application thereof |
| CN114262575A (en) * | 2021-12-30 | 2022-04-01 | 恒玮电子材料(昆山)有限公司 | Protective film for curved surface of 3C product and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140058070A (en) * | 2012-11-06 | 2014-05-14 | 주식회사 테이팩스 | Anti-scattering film and method of preparing the same |
| CN108192520A (en) * | 2017-12-22 | 2018-06-22 | 新纶科技（常州）有限公司 | A kind of 2.5D protective films and preparation method thereof |
| CN110484156A (en) * | 2019-07-26 | 2019-11-22 | 新纶科技（常州）有限公司 | A kind of 3D curved surface mobile phone TPU silicone protective film and preparation method thereof |
| CN110484155A (en) * | 2019-07-26 | 2019-11-22 | 新纶科技（常州）有限公司 | Unlocked by fingerprint mobile phone 2.5D protective film and preparation method thereof under a kind of screen |
| CN111484810A (en) * | 2020-04-23 | 2020-08-04 | 广东邦固薄膜涂料创新研究院有限公司 | 3D curved screen anti-fingerprint TPU (thermoplastic polyurethane) protective film and preparation method thereof |
-
2020
- 2020-10-16 CN CN202011106543.3A patent/CN112175539B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140058070A (en) * | 2012-11-06 | 2014-05-14 | 주식회사 테이팩스 | Anti-scattering film and method of preparing the same |
| CN108192520A (en) * | 2017-12-22 | 2018-06-22 | 新纶科技（常州）有限公司 | A kind of 2.5D protective films and preparation method thereof |
| CN110484156A (en) * | 2019-07-26 | 2019-11-22 | 新纶科技（常州）有限公司 | A kind of 3D curved surface mobile phone TPU silicone protective film and preparation method thereof |
| CN110484155A (en) * | 2019-07-26 | 2019-11-22 | 新纶科技（常州）有限公司 | Unlocked by fingerprint mobile phone 2.5D protective film and preparation method thereof under a kind of screen |
| CN111484810A (en) * | 2020-04-23 | 2020-08-04 | 广东邦固薄膜涂料创新研究院有限公司 | 3D curved screen anti-fingerprint TPU (thermoplastic polyurethane) protective film and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698861A (en) * | 2021-02-04 | 2021-11-26 | 广东鼎立森新材料有限公司 | Dual-curing coating for curved surface and application thereof |
| CN113563823A (en) * | 2021-07-29 | 2021-10-29 | 江苏斯迪克新材料科技股份有限公司 | 3D protective film attached to curved screen and preparation method thereof |
| CN113789135A (en) * | 2021-08-26 | 2021-12-14 | 江苏斯迪克新材料科技股份有限公司 | Optical curved surface silica gel protective film and preparation method thereof |
| CN113913125A (en) * | 2021-10-20 | 2022-01-11 | 江西昊泽光学膜科技有限公司 | Ultra-clear flexible glass protective film and preparation method and application thereof |
| CN114262575A (en) * | 2021-12-30 | 2022-04-01 | 恒玮电子材料(昆山)有限公司 | Protective film for curved surface of 3C product and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112175539B (en) | 2022-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112175539B (en) | UV (ultraviolet) photocuring 3D protective film and preparation method thereof | |
| CN102760380B (en) | Hard coating thin film and touch panel using the same | |
| CN102791816B (en) | Pressure sensitive adhesive sheet for optics | |
| TW200924975A (en) | Protective film for image display apparatus and image display apparatus comprising the same | |
| EP3351575A1 (en) | (meth)acrylamide-based urethane oligomer and active-energy-ray-curable resin composition containing same | |
| CN102721992A (en) | Optical film coated with adhesive | |
| TWI612119B (en) | Photo-curable composition for transparent adhesive sheet, adhesive sheet made of same and use thereof | |
| KR101928731B1 (en) | Adhesive layer and adhesive film | |
| CN111534244B (en) | Protective film applied to curved surface display screen | |
| KR101110534B1 (en) | Surface protective film | |
| KR20110071480A (en) | Uv curable coating composiition and coating film | |
| JP2014109712A (en) | Hard coat film, decorative film and protective film | |
| US9752064B2 (en) | Transparent UV-curable adhesive | |
| CN102549098A (en) | Process for production of pressure-sensitive adhesive composition, process for production of pressure-sensitive adhesive film, raw material composition for pressure-sensitive adhesive, and pressure-sensitive adhesive film | |
| CN106167680A (en) | Adhesive sheet and display body | |
| CN108559422A (en) | A kind of Curved screen protector | |
| JP7001771B2 (en) | Adhesive layer and adhesive film | |
| KR102337694B1 (en) | Flexible touch-screen panel module and flexible display device comprising the same | |
| CN113429874A (en) | Electroplating finish paint and preparation method and application thereof | |
| CN112391130A (en) | Protective film and preparation method and application thereof | |
| US10287449B2 (en) | Hard coating film and flexible display having the same | |
| JP6505994B2 (en) | PHOTO-CURABLE COMPOSITION, AND LAMINATED FILM | |
| JP2016040378A (en) | Transparent double-sided adhesive sheet for image display unit, constituent member for image display unit with transparent double-sided adhesive sheet using the same, and image display unit | |
| CN113201158B (en) | TPU (thermoplastic polyurethane) protective film and preparation method thereof | |
| JP2022036139A (en) | Optical film with adhesive layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |