CN112646502A - Dual-curing protective film and preparation method thereof - Google Patents
Dual-curing protective film and preparation method thereof Download PDFInfo
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- CN112646502A CN112646502A CN202110064111.9A CN202110064111A CN112646502A CN 112646502 A CN112646502 A CN 112646502A CN 202110064111 A CN202110064111 A CN 202110064111A CN 112646502 A CN112646502 A CN 112646502A
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- 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
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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- 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
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- 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
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- 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
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Abstract
The invention discloses a double-curing protective film and a preparation method thereof. The protective layer effectively protects the fingerprint hardening resistant layer from being scratched or damaged by external force before use, so that the product quality is ensured; the fingerprint hardening resistant layer is arranged, and is hydrophobic and oleophobic, so that the surface easy to wipe is attached with oil stain or water is not remained, the effect of hardening the surface of the substrate layer is also achieved, the oil stain is prevented, and the cleaning effect is good; the substrate layer and the OCA layer can be tightly attached through the double curing layers, the adhesion degree is high, layering is not easy, the overall structural strength is effectively improved, and the service life is prolonged; the coating is coated with the TPU film layer, has the characteristics of ageing resistance, no yellowing, good flexibility and the like, and can be stably attached to a plane or a curved surface of an object to be attached without bubbles through the second adhesive layer. The preparation method provided by the invention is simple, easy to realize and high in production efficiency.
Description
Technical Field
The invention relates to the technical field of protective films, in particular to a dual-curing protective film and a preparation method thereof.
Background
With the continuous progress of science and technology, touch panels are increasingly used in display devices, but passive abrasion of the touch panels can reduce the use performance and the aesthetic degree, and finally the use value of the touch panels is lost, so that economic loss is caused. Hard coatings that can be applied to the surface of a substrate have become a current endeavor.
With the introduction of full-screen mobile phones by various large mobile phone manufacturers, the screen occupation ratio is higher and higher, the full screen of the mobile phone is the development trend of the current mobile phone screen, and nowadays, the edges and screens of the bodies of many mobile phones are designed into arc structures, such as curved-surface screen mobile phones. The one-layer PET film is generally adopted in the use layer of the screen protection film on the existing market, the hardness is not very high, scratches are easily generated due to friction or large impact, the curing strength of the whole structure is poor, the service life of the screen protection film is short, and the like, so that the requirements of the current living environment of people can not be obviously met.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the dual-curing protective film which is ingenious and reasonable in structural design, scratch-resistant and good in overall strength.
The invention also aims to provide a preparation method of the dual-curing protective film, which can be used for quickly preparing and producing the dual-curing protective film.
In order to achieve the purpose, the invention provides the technical scheme that: the utility model provides a two solidification protection films, it includes substrate layer, protective layer, first viscose layer, anti fingerprint sclerosis layer, two solidified layers, OCA layer, TPU rete, second viscose layer and leaves the type layer, anti fingerprint sclerosis layer, first viscose layer and protective layer set gradually according to from interior to exterior order on the first surface of substrate layer, two solidified layers, OCA layer, TPU rete, second viscose layer and from the type layer set gradually according to from interior to exterior order the second of substrate layer is on the surface.
As an improvement of the invention, the protective layer is a transparent PET film or a blue PET film, and the thickness of the protective layer is 45-55 micrometers.
As an improvement of the invention, the first adhesive layer is a silica gel layer or an acrylic adhesive layer, and the thickness of the first adhesive layer is 10-14 microns.
As an improvement of the invention, the substrate layer is a high-transmittance PET film, and the thickness of the substrate layer is 20-30 micrometers.
As an improvement of the invention, the thickness of the dual cured layer is 50-60 microns.
As an improvement of the invention, the thickness of the fingerprint hardening resistant layer is 2-4 microns.
As an improvement of the invention, the thickness of the OCA layer is 8-12 microns.
As an improvement of the invention, the thickness of the TPU film layer is 35-45 microns.
As an improvement of the invention, the second adhesive layer is a silica gel layer, and the thickness of the second adhesive layer is 12-18 microns.
As an improvement of the invention, the release layer is a fluorine release film, and the thickness of the release layer is 45-55 microns.
A preparation method of a dual-curing protective film comprises the following steps:
(1) coating acrylic varnish on the first surface of the substrate layer by a micro-concave coating process, and forming an anti-fingerprint hardened layer on the substrate layer by baking and UV lamp irradiation;
(2) mixing the dual-curing adhesive and a reactant according to a mass ratio of 100: 7, adding the mixture into a glue tank for blending, stirring for 15-30 minutes to obtain mixed glue solution, adding the mixed glue solution into a coating machine, coating the mixed glue solution on the second surface of the substrate layer through the coating machine, and baking to form a double-curing layer;
(3) coating TPU glue on a release film, drying to obtain a TPU film layer, and curing for 24-72 hours;
(4) coating silica gel on the surface of the TPU film layer, and drying to obtain a second adhesive layer;
(5) laminating the fluorine release film on the second adhesive layer to form a release layer;
(6) stripping the release film to expose the other surface of the TPU film layer, coating OCA glue on the other surface of the TPU film layer, drying to obtain an OCA layer, and then laminating the OCA layer on the double curing layer;
(7) selecting a transparent PET film or a blue PET film as a protective layer, coating silica gel or acrylic gel on the protective layer, drying to form a first adhesive layer, and then laminating on the anti-fingerprint hardened layer to obtain the dual-curing protective film product.
The invention has the beneficial effects that: the fingerprint hardening resistant layer is reasonable in structural design, the fingerprint hardening resistant layer is effectively protected by the protective layer from being scratched or damaged by external force before use, and the product quality is ensured; the fingerprint hardening resistant layer is arranged, and is hydrophobic and oleophobic, so that the surface easy to wipe is attached with oil stain or water is not remained, the effect of hardening the surface of the substrate layer is also achieved, the oil stain is prevented, and the cleaning effect is good; the substrate layer and the OCA layer can be tightly attached through the double curing layers, the adhesion degree is high, layering is not easy, the overall structural strength is effectively improved, and the service life is prolonged; the adhesive tape is coated with the TPU film layer, has the characteristics of ageing resistance, no yellowing, good flexibility and the like, can be stably attached to a plane or a curved surface of an object to be attached without bubbles through the second adhesive layer, is convenient to operate and adhere to the object, can keep the surface of the second adhesive layer clean from the adhesive layer, avoids adhering other sundries, is easy to peel off, brings convenience to use, has strong practicability, and is favorable for wide popularization and application. The preparation method provided by the invention is simple, easy to implement and high in production efficiency, can quickly produce the cured protective film product with good protection effect and excellent comprehensive performance, and is beneficial to wide popularization and application.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
Detailed Description
Example (b): referring to fig. 1, an embodiment of the present invention provides a dual-curing protective film, which includes a substrate layer 1, a protective layer 2, a first adhesive layer 3, a fingerprint hardening resistant layer 4, a dual-curing layer 5, an OCA layer 6, a TPU film layer 7, a second adhesive layer 8, and a release layer 9. Anti fingerprint sclerosis layer 4, first viscose layer 3 and protective layer 2 set gradually according to from interior to exterior order on the first surface of substrate layer 1, two cured layer 5, OCA layer 6, TPU rete 7, second viscose layer 8 and from type layer 9 set gradually according to from interior to exterior order the second of substrate layer 1 is on the surface.
In the embodiment, the protective layer 2 is preferably a transparent PET film or a blue PET film, and the thickness is 45-55 micrometers. The first adhesive layer 3 is preferably a silica gel layer or an acrylic adhesive layer, and the thickness is 10-14 micrometers. The substrate layer 1 is preferably a high-transmittance PET film with the thickness of 20-30 microns. The thickness of the dual cured layer 5 is preferably 50 to 60 μm. The thickness of the fingerprint hardening resistant layer 4 is preferably 2-4 microns. The thickness of the OCA layer 6 is preferably 8-12 microns. The thickness of the TPU film layer 7 is preferably 35-45 micrometers. The second adhesive layer 8 is preferably a silica gel layer, and the thickness is 12-18 microns. The release layer 9 is preferably a fluorine release film, and the thickness of the release layer is 45-55 micrometers.
A preparation method of a dual-curing protective film comprises the following steps:
(1) selecting a high-transmittance PET film as a substrate layer 1, coating acrylic varnish on the first surface of the substrate layer 1 by a micro-concave coating process, and forming an anti-fingerprint hardened layer 4 on the substrate layer 1 by baking and UV lamp irradiation;
(2) mixing the dual-curing adhesive and a reactant according to a mass ratio of 100: 7, adding the mixture into a glue tank for blending, stirring for 15-30 minutes to obtain mixed glue solution, adding the mixed glue solution into a coating machine, coating the mixed glue solution on the second surface of the substrate layer 1 through the coating machine, and baking to form a double-curing layer 5;
(3) coating TPU glue on a release film, drying to obtain a TPU film layer 7, and curing for 24-72 hours;
(4) coating silica gel on the surface of the TPU film layer 7, and drying to obtain a second adhesive layer 8;
(5) laminating the fluorine release film on the second adhesive layer 8 to form a release layer 9;
(6) stripping the release film to expose the other surface of the TPU film layer 7, coating OCA glue on the other surface of the TPU film layer 7, drying to obtain an OCA layer 6, and then laminating the OCA layer on the double curing layer 5;
(7) selecting a transparent PET film or a blue PET film as a protective layer 2, coating silica gel or acrylic gel on the protective layer 2, drying to form a first adhesive layer 3, and then coating the first adhesive layer on an anti-fingerprint hardened layer 4 to obtain a dual-curing protective film product.
Before use, the protective layer 2 effectively protects the fingerprint hardening resistant layer 4 from being scratched or damaged by external force before use, so that the product quality is ensured; the surface of the second adhesive layer 8 can be kept clean through the release layer 9, so that other sundries are prevented from being adhered, and the peeling is easy.
When in pasting, the release layer 9 is firstly peeled off to expose the second adhesive layer 8, and then the second adhesive layer 8 is stably pasted on the plane or the curved surface of an object to be pasted without bubbles; then peeling off the protective layer 2 to expose the fingerprint hardening resisting layer 4.
When the fingerprint hard coating is used, the fingerprint hard coating layer 4 is arranged on the substrate layer 1, so that the fingerprint hard coating has hydrophobic and oleophobic properties, the surface easy to wipe is attached with oil stain or water without residue, the effect of hardening the surface of the substrate layer 1 is achieved, the oil stain is prevented, and the cleaning effect is good. And can closely laminate substrate layer 1 and OCA layer 6 through two cured layer 5, the adhesion degree is high, and difficult layering effectively promotes overall structure intensity, long service life.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the invention in any way, and other protective films and preparation methods which are the same as or similar to the terms are used within the protection scope of the invention.
Claims (10)
1. The utility model provides a two solidification protection films, it includes the substrate layer, its characterized in that, it still includes protective layer, first viscose layer, anti fingerprint sclerosis layer, two solidified layers, OCA layer, TPU rete, second viscose layer and leaves the type layer, anti fingerprint sclerosis layer, first viscose layer and protective layer set gradually according to from interior to exterior order the first surface of substrate layer is last, two solidified layers, OCA layer, TPU rete, second viscose layer and from the type layer set gradually according to from interior to exterior order the second of substrate layer is on the surface.
2. The dual-cured protective film according to claim 1, wherein the protective layer is a transparent PET film or a blue PET film, and has a thickness of 45-55 μm.
3. The dual-curing protective film according to claim 1, wherein the first adhesive layer is a silicone adhesive layer or an acrylic adhesive layer, and has a thickness of 10 to 14 μm.
4. The dual-cured protective film according to claim 1, wherein the substrate layer is a high-transmittance PET film with a thickness of 20-30 μm.
5. The dual cure protective film according to claim 1, wherein the thickness of the dual cure layer is 50 to 60 μm.
6. The dual cure protective film according to claim 1, wherein the thickness of the fingerprint hardening resistant layer is 2 to 4 μm.
7. The dual cure protective film according to claim 1, wherein the thickness of the OCA layer is 8 to 12 μm.
8. The dual cure protective film of claim 1, wherein the thickness of the TPU film layer is 35 to 45 microns.
9. The dual-curing protective film according to claim 1, wherein the second adhesive layer is a silicone adhesive layer with a thickness of 12-18 μm, and the release layer is a fluorine release film with a thickness of 45-55 μm.
10. The preparation method of the dual-curing protective film is characterized by comprising the following steps of:
(1) coating acrylic varnish on the first surface of the substrate layer by a micro-concave coating process, and forming an anti-fingerprint hardened layer on the substrate layer by baking and UV lamp irradiation;
(2) mixing the dual-curing adhesive and a reactant according to a mass ratio of 100: 7, adding the mixture into a glue tank for blending, stirring for 15-30 minutes to obtain mixed glue solution, adding the mixed glue solution into a coating machine, coating the mixed glue solution on the second surface of the substrate layer through the coating machine, and baking to form a double-curing layer;
(3) coating TPU glue on a release film, drying to obtain a TPU film layer, and curing for 24-72 hours;
(4) coating silica gel on the surface of the TPU film layer, and drying to obtain a second adhesive layer;
(5) laminating the fluorine release film on the second adhesive layer to form a release layer;
(6) stripping the release film to expose the other surface of the TPU film layer, coating OCA glue on the other surface of the TPU film layer, drying to obtain an OCA layer, and then laminating the OCA layer on the double curing layer;
(7) selecting a transparent PET film or a blue PET film as a protective layer, coating silica gel or acrylic gel on the protective layer, drying to form a first adhesive layer, and then laminating on the anti-fingerprint hardened layer to obtain the dual-curing protective film product.
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| CN202110064111.9A CN112646502A (en) | 2021-01-18 | 2021-01-18 | Dual-curing protective film and preparation method thereof |
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| CN202110064111.9A CN112646502A (en) | 2021-01-18 | 2021-01-18 | Dual-curing protective film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201158A (en) * | 2021-04-29 | 2021-08-03 | 江西昊泽光学膜科技有限公司 | TPU protective film, TPU base film and preparation method thereof |
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2021
- 2021-01-18 CN CN202110064111.9A patent/CN112646502A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201158A (en) * | 2021-04-29 | 2021-08-03 | 江西昊泽光学膜科技有限公司 | TPU protective film, TPU base film and preparation method thereof |
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