UV visbreaking protective film, preparation method and glasses

Abstract

The invention discloses a UV (ultraviolet) visbreaking protective film, a preparation method and glasses, the UV visbreaking protective film comprises a base material which is a PMMA (polymethyl methacrylate) base material; the glue coating is formed on the base material, and the main raw material of the glue coating is polymethyl methacrylate. According to the scheme, the original PET base material is replaced by the base material (PMMA) of which the components are the same as those of a glue system, so that light only passes through the same medium when entering the VR lens from the back surface of the UV viscosity-reducing film, the phase difference of the light is minimum (R0 < 1), and the influence on an online test result is remarkably reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of adhesives, and in particular relates to a UV anti-viscosity protective film, a preparation method and glasses. Background Art

[0002] Currently, the UV anti-viscosity protective films on the market generally use PET as the base material, which leads to a large phase difference when light enters the product, affecting the online detection problem when VR glasses are manufactured.

[0003] Therefore, in view of the above technical problems, it is necessary to provide a UV anti-viscosity protective film, a preparation method and glasses.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a UV anti-viscosity protective film, a preparation method and glasses.

[0006] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0007] The UV anti-adhesion protective film comprises a substrate, which is a PMMA substrate; and a glue coating formed on the substrate, wherein the main raw material of the glue coating is polymethyl methacrylate.

[0008] In one or more embodiments of the present invention, the raw materials of the glue coating include, by weight: 59-70% polymethyl methacrylate, 28-40% polyurethane acrylate, 0.5-1% isocyanate, and 0.5-1% photoinitiator.

[0009] In one or more embodiments of the present invention, the photoinitiator is an acylphosphine oxide.

[0010] In one or more embodiments of the present invention, the photoinitiator is TPO.

[0011] In one or more embodiments of the present invention, the thickness of the substrate is 10-100 μm.

[0012] In one or more embodiments of the present invention, the thickness of the glue coating is 15-20 μm.

[0013] In one or more embodiments of the present invention, a release film is further included, and the release film is formed on the other side of the glue coating relative to the substrate.

[0014] In one or more embodiments of the present invention, the thickness of the release film is 30-80 μm. The preferred release film is a PET release film.

[0015] In one or more embodiments of the present invention, glasses include lenses and a UV adhesion-reducing protective film disposed on the lenses.

[0016] In one or more embodiments of the present invention, a method for preparing a UV viscosity-reducing protective film comprises:

[0017] preparing glue for coating the glue coating;

[0018] Apply glue on the release film and adhere it to the PMMA substrate after drying.

[0019] Compared with the prior art, the UV anti-viscosity protective film, preparation method and glasses of the present invention select a substrate (PMMA) with the same composition as the adhesive system to replace the original PET substrate, so that when light enters the VR lens from the back of the UV anti-viscosity film, it only passes through the same medium, thereby minimizing the phase difference of the light (R 0 <1), the impact on online test results is significantly reduced. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] Example 1

[0022] The UV anti-viscosity protective film in this embodiment includes a PMMA substrate with a thickness of 30 μm, a glue coating with a thickness of 15 μm formed on the substrate, and a PET release film with a thickness of 50 μm. The raw materials of the glue coating include, by weight: 59% polymethyl methacrylate, 0.5% isocyanate, 0.5% TPO, and the remainder polyurethane acrylate.

[0023] The preparation method comprises the following steps: selecting a release film substrate, directly coating the glue of the above proportion through a slit or a scraper, passing through an oven, and then laminating the PMMA substrate at a composite station.

[0024] Test results:

[0025]

[0026] The UV anti-sticking film coated with PMMA substrate has better optical properties, especially phase difference, than PET substrate, so that the optical performance of VR lenses can be tested without peeling off the protective film during manufacturing.

[0027] Example 2

[0028] The UV anti-viscosity protective film in this embodiment includes a PMMA substrate with a thickness of 10 μm, a glue coating with a thickness of 17 μm formed on the substrate, and a PET release film with a thickness of 30 μm. The raw materials of the glue coating include, by weight: 63% polymethyl methacrylate, 0.7% isocyanate, 0.8% TPO, and the remainder polyurethane acrylate.

[0029] The preparation method comprises the following steps: selecting a release film substrate, directly coating the glue of the above proportion through a slit or a scraper, passing through an oven, and then laminating the PMMA substrate at a composite station.

[0030] Test results:

[0031]

[0032]

[0033] Example 3

[0034] The UV anti-viscosity protective film in this embodiment includes a PMMA substrate with a thickness of 100 μm, a glue coating with a thickness of 20 μm formed on the substrate, and a PET release film with a thickness of 80 μm. The raw materials of the glue coating include, by weight: 70% polymethyl methacrylate, 1% isocyanate, 1% TPO, and the balance polyurethane acrylate.

[0035] The preparation method comprises the following steps: selecting a release film substrate, directly coating the glue of the above proportion through a slit or a scraper, passing through an oven, and then laminating the PMMA substrate at a composite station.

[0036] Test results:

[0037]

[0038] Example 4

[0039] The UV anti-viscosity protective film in this embodiment includes a PMMA substrate with a thickness of 30 μm, a glue coating with a thickness of 18 μm formed on the substrate, and a PET release film with a thickness of 40 μm. The raw materials of the glue coating include, by weight: 68% polymethyl methacrylate, 0.6% isocyanate, 0.8% TPO, and the remainder polyurethane acrylate.

[0040] The preparation method comprises the following steps: selecting a release film substrate, directly coating the glue of the above proportion through a slit or a scraper, passing through an oven, and then laminating the PMMA substrate at a composite station.

[0041] Test results:

[0042]

[0043]

[0044] Example 5

[0045] The UV anti-viscosity protective film in this embodiment includes a PMMA substrate with a thickness of 90 μm, a glue coating with a thickness of 19 μm formed on the substrate, and a PET release film with a thickness of 80 μm. The raw materials of the glue coating include, by weight: 69% polymethyl methacrylate, 0.9% isocyanate, 0.8% TPO, and the remainder polyurethane acrylate.

[0046] The preparation method comprises the following steps: selecting a release film substrate, directly coating the glue of the above proportion through a slit or a scraper, passing through an oven, and then laminating the PMMA substrate at a composite station.

[0047] Test results:

[0048]

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A UV anti-viscosity protective film, comprising A substrate, wherein the substrate is a PMMA substrate; A glue coating is formed on a substrate, wherein the main raw material of the glue coating is polymethyl methacrylate.

2. The UV viscosity-reducing protective film according to claim 1, characterized in that: The raw materials of the glue coating include, by weight: 59-70% polymethyl methacrylate, 28-40% polyurethane acrylate, 0.5-1% isocyanate, and 0.5-1% photoinitiator.

3. The UV anti-viscosity protective film according to claim 2, characterized in that: The photoinitiator is an acylphosphine oxide.

4. The UV viscosity-reducing protective film according to claim 3, characterized in that: The photoinitiator is TPO.

5. The UV viscosity-reducing protective film according to claim 1, characterized in that: The thickness of the substrate is 10-100 μm.

6. The UV viscosity-reducing protective film according to claim 1, characterized in that: The thickness of the glue coating is 15-20 μm.

7. The UV viscosity-reducing protective film according to any one of claims 1 to 6, characterized in that: The invention also comprises a release film, wherein the release film is formed on the other side of the glue coating relative to the substrate.

8. The UV viscosity-reducing protective film according to claim 7, characterized in that: The release film has a thickness of 30-80 μm.

9. Glasses comprising a lens and a UV anti-viscosity protective film according to any one of claims 1 to 8 arranged on the lens.

10. The method for preparing a UV viscosity-reducing protective film according to any one of claims 1 to 8, characterized in that: include: preparing glue for coating the glue coating; The glue is coated on the release film, and the release film is bonded to the PMMA substrate after drying.

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