CN116082980A - UV (ultraviolet) light-cured easy-to-peel optical film - Google Patents
UV (ultraviolet) light-cured easy-to-peel optical film Download PDFInfo
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- CN116082980A CN116082980A CN202310149776.9A CN202310149776A CN116082980A CN 116082980 A CN116082980 A CN 116082980A CN 202310149776 A CN202310149776 A CN 202310149776A CN 116082980 A CN116082980 A CN 116082980A
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- layer
- sensitive adhesive
- pressure
- optical film
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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
- C09J7/29—Laminated material
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/16—Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
-
- 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
- C09J2469/00—Presence of polycarbonate
- C09J2469/006—Presence of polycarbonate in the substrate
Abstract
The invention discloses an UV (ultraviolet) photocuring easy-stripping optical film, which relates to the technical field of optical films and comprises a first base layer, an antistatic layer, a first pressure-sensitive adhesive layer, a second pressure-sensitive adhesive layer, a release film, a second base layer, an ultraviolet-proof layer and an anti-fouling layer, wherein the antistatic layer is arranged on the outer side of the first base layer, the first pressure-sensitive adhesive layer is arranged in the antistatic layer, and a release film is arranged at one end of the first pressure-sensitive adhesive layer. The UV light-cured easy-to-peel optical film is prepared by coating a first pressure-sensitive adhesive on PET (polyethylene terephthalate) through a machine, drying the PET through a baking oven, then covering a layer of release film on the first pressure-sensitive adhesive to finish a semi-finished product, then coating a second pressure-sensitive adhesive on PET, drying the PET through a baking oven, covering the other surface of the semi-finished product PET film, finally finishing the production of the finished product, compounding the finished product without separation during coating, avoiding the adverse phenomena of bubbles, foreign matters, crush injury and the like, and curing the finished product for 3-5 minutes through a 3-8WUV ultraviolet lamp, so that the rapid curing can be ensured, and the second becomes 9H hardness.
Description
Technical Field
The invention relates to the technical field of optical films, in particular to an optical film which is easy to peel by UV light curing.
Background
In recent years, electronic products such as mobile phone panels are rapidly updated, and electronic display screens, such as touch screens and liquid crystal displays, are rapidly developed. The bonding method between the touch screen and the corresponding component is the conventional OCA full lamination.
At present, although the conventional OCA adhesive can realize a bonding function and has better filling property, the processing performance is not excellent enough, the defoaming is difficult, and although the OCA optical adhesive is a main stream product on the market at present, the production cost is high, the bonding requirement is high, the yield is low, so that an optical adhesive film with low cost, easy processing and wide applicability is urgently needed to replace the OCA optical adhesive.
Disclosure of Invention
The invention aims to provide an optical film which is easy to peel and is solidified by UV light, so as to solve the technical problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an optical film that UV photocuring was easily peeled off, includes first basic unit, antistatic layer, first pressure sensitive adhesive layer, second pressure sensitive adhesive layer, leaves type membrane, second basic unit, anti ultraviolet layer and anti dirty layer, the outside of first basic unit is provided with antistatic layer, the inside of antistatic layer is provided with first pressure sensitive adhesive layer, the one end on first pressure sensitive adhesive layer is provided with from the type membrane, the one end on first basic unit is provided with second pressure sensitive adhesive layer, the one end on second pressure sensitive adhesive layer is provided with the second basic unit, the one end on second basic unit is provided with the anti ultraviolet layer, the surface spraying on anti dirty layer.
Preferably, the release film is bonded to the first base layer by a first pressure sensitive adhesive layer.
Preferably, the first base layer is coated with a first pressure-sensitive adhesive layer with the thickness of 5-20 mu, and is baked for 5-10min in an oven, and another release film is coated on the first base layer.
Preferably, the second substrate is bonded to the first substrate by a second pressure sensitive adhesive layer.
Preferably, the second base layer is coated with a second pressure-sensitive adhesive layer with a thickness of 50-80 mu, and the second pressure-sensitive adhesive layer is baked in an oven for 10-20min, and then the film is coated on the other side of the first base layer.
Preferably, the first base layer and the second base layer are both PET.
Preferably, the transmittance of the antistatic layer is more than 93%, the hardness of the antistatic layer can reach 9H, and the stripping force of the antistatic layer can reach 1357.
Preferably, the ultraviolet-proof layer is glued with the second base layer, and the ultraviolet-proof layer is made of polycarbonate and has a thickness of 2-3 mu.
Preferably, the anti-fouling layer is a coating formed by spraying nano materials on the optical film layer, and the thickness of the coating is 1-2 mu.
Compared with the prior art, the invention has the beneficial effects that:
1. the UV light-cured easy-to-peel optical film is prepared by coating a first pressure-sensitive adhesive on PET (polyethylene terephthalate) through a machine, drying the PET through a baking oven, then covering a layer of release film on the first pressure-sensitive adhesive to finish a semi-finished product, then coating a second pressure-sensitive adhesive on PET, drying the PET through a baking oven, covering the other surface of the semi-finished product PET film, finally finishing the production of the finished product, compounding the finished product without separation during coating, avoiding the adverse phenomena of bubbles, foreign matters, crush injury and the like, and curing the finished product for 3-5 minutes through a 3-8W UV ultraviolet lamp, so that the rapid curing can be ensured, and the second becomes 9H hardness.
2. According to the UV light-cured easy-to-peel optical film, the acrylic acid common ester is synthesized through a plurality of acrylic acid monomers, so that the optical film has excellent optical properties, such as good weather resistance, low shrinkage, good thermal stability, high light transmittance, strong adhesive force, no yellowing and the like, can be synthesized on the acrylic acid common ester according to the proportion of different monomers, and is manufactured into the UV cured film OCA, so that the attaching effect of the mobile phone film is achieved, and the manufactured finished product is scratch-resistant, full-screen attaching, more fitting and more stable; the color of the bare screen is restored, and the hand feeling is doubled and smoother; fingerprint unlocking and touch sensitivity.
3. This kind of UV photocuring is easy to peel off's optical film, through the anti-soil layer that sets up, anti ultraviolet layer, antistatic layer, the anti ultraviolet layer is polycarbonate anti ultraviolet layer, can prevent to receive the ultraviolet irradiation during the use, cause the inefficacy of antistatic layer, and then guaranteed the quality when antistatic layer uses, antistatic layer is by first pressure sensitive adhesive layer, the second pressure sensitive adhesive layer composition for can avoid in the in-process of using, because electrostatic adsorption dust has guaranteed the cleanness of optical film, the anti-soil layer is the coating that forms on the optical film layer with nano material spraying, can make optical film have better oleophobic performance, do not be stained with oil, do not keep nail seal, the other fingerprint remains.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a step of preparing a first pressure sensitive adhesive layer according to the present invention;
FIG. 5 is a schematic view showing the positional relationship of a first pressure-sensitive adhesive layer according to the present invention;
FIG. 6 is a step of preparing a second pressure sensitive adhesive layer according to the present invention;
fig. 7 is a schematic diagram of the positional relationship of the second pressure-sensitive adhesive layer of the present invention.
In the figure: 1. a first base layer; 2. an antistatic layer; 201. a first pressure-sensitive adhesive layer; 202. a second pressure-sensitive adhesive layer; 3. a release film; 4. a second base layer; 5. an ultraviolet-proof layer; 6. an anti-fouling layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides an optical film that UV photocuring was easily peeled off, includes first basic unit 1, antistatic layer 2, first pressure sensitive adhesive layer 201, second pressure sensitive adhesive layer 202, from type membrane 3, second basic unit 4, anti ultraviolet layer 5 and anti dirty layer 6, the outside of first basic unit 1 is provided with antistatic layer 2, and the luminousness of antistatic layer 2 is greater than 93%, and its hardness can reach 9H, and its peeling force can reach 1357, and antistatic layer 2 can avoid in the in-process of using, because static adsorbs the dust, has guaranteed the cleanness of optical film.
Referring to fig. 4 and 5, it can be seen that the release film 3 is glued with the first base layer 1 through the first pressure-sensitive adhesive layer 201, the first pressure-sensitive adhesive layer 201 is disposed in the antistatic layer 2, the release film 3 is disposed at one end of the first pressure-sensitive adhesive layer 201, the second pressure-sensitive adhesive layer 202 is disposed at one end of the first base layer 1, the second base layer 4 is disposed at one end of the second pressure-sensitive adhesive layer 202, the first base layer 1 and the second base layer 4 are both PET, and are transparent and colorless, and the better the surface hardening, the stronger the abrasion resistance.
Referring to fig. 1 and 2, it can be seen that an anti-ultraviolet layer 5 is disposed at one end of the second base layer 4, the anti-ultraviolet layer 5 is bonded with the second base layer 4, and the anti-ultraviolet layer 5 is made of polycarbonate, and has a thickness of 2-3 μ, so that the anti-ultraviolet layer 2 is prevented from being irradiated by ultraviolet rays during use, and the quality of the anti-static layer 2 during use is further ensured.
Referring to fig. 1 and 2, the second base layer 4 is bonded to the first base layer 1 through the second pressure-sensitive adhesive layer 202.
Referring to fig. 1 and 2, it can be seen that the anti-fouling layer 6 is sprayed on the surface of the anti-uv layer 5, and the anti-fouling layer 6 is a coating formed by spraying nano material on an optical film layer, and has a thickness of 1-2 μ, so that the optical film has better oleophobic performance, is not stained with oil, does not leave nail print, and has no fingerprint residue.
Referring to fig. 6 and 7, the second base layer 4 is coated with a second pressure-sensitive adhesive layer 202 having a thickness of 50-80 mu, and then baked in an oven for 10-20min, and the film is coated on the other surface of the first base layer 1.
Referring to fig. 4 and 5, the first base layer 1 is coated with a first pressure-sensitive adhesive layer 201 having a thickness of 5-20 μ, and is baked in an oven for 5-10min, and covered with another release film 3.
The working principle is as follows: the first pressure-sensitive adhesive 201 is coated on PET through machine coating, oven drying is carried out, then a release film is coated on the first pressure-sensitive adhesive 201, a semi-finished product is completed, then the second pressure-sensitive adhesive 202 is coated on PET, oven drying is carried out, and then the other side of the semi-finished product PET film is coated, finally the finished product is manufactured, the coating is compounded without separation, no bubble, foreign matters, crush injury and other bad phenomena, and the coating is cured for 3-5 minutes through a 3-8W UV ultraviolet lamp, so that the rapid curing can be ensured, the second becomes 9H hardness, the ultraviolet-proof layer 5 on the surface of the second base layer 4 is a polycarbonate ultraviolet-proof layer, the ultraviolet irradiation can be prevented when the coating is used, the failure of the antistatic layer 2 is caused, the quality of the antistatic layer 2 is ensured, the antistatic layer 2 on the outer side of the first base layer 1 is composed of the first pressure-sensitive adhesive layer 201 and the second pressure-sensitive adhesive layer 202, the cleaning of the optical film can be ensured due to electrostatic adsorption dust in the use process, the antistatic layer 6 on the outer surface of the layer 5 is the nano material is sprayed on the optical film layer, the optical film layer can be prevented from forming the optical film layer, the excellent fingerprint performance is not to be kept, and the fingerprint is not easy to print.
A step of preparing a first pressure-sensitive adhesive layer:
uniformly mixing ethyl acrylate, butyl acrylate, isooctyl acrylate, hydroxyethyl acrylate, methyl acrylate, acrylamide, isobornyl methacrylate and lauryl acrylate to a reaction kettle; taking 45-65% of the total weight of the mixture, 40-60% of the total weight of the mixture and 40-60% of the total weight of the initiator, pouring the mixture into a four-neck flask with a thermometer, mechanical stirring and a condenser tube, heating the flask to 80 ℃ for reaction, and timing for 1h when the viscosity of a reaction system begins to increase; after the heat preservation reaction is carried out for 1.5 hours, 1 to 20 parts of solvent is added into the reaction system, the rotating speed is adjusted to 300rap/min, and the stirring is carried out for 20min; and finally cooling and discharging, wherein the solid content of the acrylate pressure-sensitive adhesive is 25-40%.
And a curing agent is added into the prepared glue to increase crosslinking, improve the toughness of the glue and solve the glue overflow phenomenon of the glue. And then, adding some auxiliary agents for improving other properties, such as defoamer, coupling agent and improving the appearance and the attaching effect of the adhesive. Finally, 5-20 mu of dry glue is coated on PET, the PET is dried for 5-10min in an oven, and another release film is coated, so that the preparation of single-layer glue is completed.
A step of preparing a second pressure-sensitive adhesive layer:
ethyl acrylate, butyl acrylate, isooctyl acrylate, hydroxyethyl acrylate, methyl acrylate, acrylamide, isobornyl methacrylate and methacrylamide are uniformly mixed to a reaction kettle. Taking 45-65% of the total weight of the mixture, 40-60% of the total weight of the mixture and 40-60% of the total weight of the initiator, pouring the mixture into a four-neck flask with a thermometer, mechanical stirring and a condenser tube, heating the flask to 80 ℃ for reaction, and timing for 1h when the viscosity of a reaction system begins to increase; after the heat preservation reaction is carried out for 1.5 hours, 1 to 20 parts of solvent is added into the reaction system, the rotating speed is adjusted to 300rap/min, and the stirring is carried out for 20min; and finally cooling and discharging, wherein the solid content of the acrylate pressure-sensitive adhesive is 25-40%.
And adding a curing agent, a photoinitiator, an antioxidant and a UV monomer into the prepared glue, and uniformly stirring. And adding some auxiliary agents for improving other performances, such as a defoaming agent and a coupling agent, improving the appearance and the bonding effect of the adhesive, finally coating 50-80 mu of dry adhesive on the PET, baking for 10-20min, and coating the film on the other surface of the first layer of PET to finish the manufacture of the product.
Performance: 180 DEG peel strength test method for pressure sensitive adhesive tape GB/T2792-1998
Pressure-sensitive adhesive tape holding-up test method GB/T4851-1998
| Peel force | Holding force | Hardness of | Transmittance of light | |
| Before UV | 824 | ＞10h | 1H | ＞93 |
| After UV | 1357 | ＞10h | 9H | ＞93 |
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (9)
1. The utility model provides an optical film that UV photocuring was easily peeled off, includes first basic unit (1), antistatic layer (2), first pressure sensitive adhesive layer (201), second pressure sensitive adhesive layer (202), from type membrane (3), second basic unit (4), anti ultraviolet layer (5) and antifouling layer (6), its characterized in that: the anti-static coating is characterized in that an anti-static layer (2) is arranged on the outer side of the first base layer (1), a first pressure-sensitive adhesive layer (201) is arranged in the anti-static layer (2), a release film (3) is arranged at one end of the first pressure-sensitive adhesive layer (201), a second pressure-sensitive adhesive layer (202) is arranged at one end of the first base layer (1), a second base layer (4) is arranged at one end of the second pressure-sensitive adhesive layer (202), an ultraviolet-proof layer (5) is arranged at one end of the second base layer (4), and an anti-pollution layer (6) is sprayed on the surface of the ultraviolet-proof layer (5).
2. A UV light curable easy release optical film according to claim 1, wherein: the release film (3) is glued with the first base layer (1) through the first pressure-sensitive adhesive layer (201).
3. A UV light curable easy release optical film according to claim 1, wherein: the first base layer (1) is coated with a first pressure-sensitive adhesive layer (201) with the thickness of 5-20 mu, and is baked for 5-10min in an oven, and is covered with another release film (3).
4. A UV light curable easy release optical film according to claim 1, wherein: the second base layer (4) is glued with the first base layer (1) through the second pressure-sensitive adhesive layer (202).
5. A UV light curable easy release optical film according to claim 1, wherein: the second base layer (4) is coated with a second pressure-sensitive adhesive layer (202) with the thickness of 50-80 mu, and is baked for 10-20min in an oven, and then the film is coated on the other side of the first base layer (1).
6. A UV light curable easy release optical film according to claim 1, wherein: the first base layer (1) and the second base layer (4) are PET.
7. A UV light curable easy release optical film according to claim 1, wherein: the light transmittance of the antistatic layer (2) is more than 93%, the hardness of the antistatic layer can reach 9H, and the stripping force of the antistatic layer can reach 1357.
8. A UV light curable easy release optical film according to claim 1, wherein: the ultraviolet-proof layer (5) is glued with the second base layer (4), and the ultraviolet-proof layer (5) is made of polycarbonate and has a thickness of 2-3 mu.
9. A UV light curable easy release optical film according to claim 1, wherein: the anti-fouling layer (6) is a coating formed by spraying nano materials on the optical film layer, and the thickness of the coating is 1-2 mu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310149776.9A CN116082980A (en) | 2023-02-22 | 2023-02-22 | UV (ultraviolet) light-cured easy-to-peel optical film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310149776.9A CN116082980A (en) | 2023-02-22 | 2023-02-22 | UV (ultraviolet) light-cured easy-to-peel optical film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116082980A true CN116082980A (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310149776.9A Pending CN116082980A (en) | 2023-02-22 | 2023-02-22 | UV (ultraviolet) light-cured easy-to-peel optical film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116082980A (en) |
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2023
- 2023-02-22 CN CN202310149776.9A patent/CN116082980A/en active Pending
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