Light control film with higher light transmittance

Abstract

The utility model belongs to the technical field of film materials, and particularly relates to a light control film with higher light transmittance. Comprising a PET release film layer, a mounting adhesive layer, a metal heat-insulating film, a transparent substrate layer, a transparent adhesive layer, a high-light-transmittance film layer, an adhesive layer, an ultraviolet-proof film layer, a composite adhesive layer and a hardened protective layer. The upper part of the PET release film layer is connected with the high-light-transmittance film layer through the mounting adhesive layer, and the upper part of the ultraviolet-proof film layer is connected with the hardened protective layer through the composite adhesive layer. The high-light-transmittance film layer is obtained by coating a solution obtained by dissolving polypropylene resin, an ultraviolet (UV) absorbent, a photoinitiator and a surfactant in ethanol. According to the light control film with the higher light transmittance, the light absorption area of the transparent base material layer absorbs light rays and limits the light rays to pass through, the light rays pass through the light transmission area, so that a peep-proof structure is formed, the light transmittance can be improved by arranging the high-light-transmittance film layer, the light inlet amount is increased, and the definition is improved; and the wear resistance and the surface hardness can be improved by arranging the hardened protection layer.

Description

Technical Field

[0001] The utility model belongs to the technical field of film materials, and particularly relates to a light control film with higher light transmittance. Background Technique

[0002] PET film is also known as high-temperature resistant polyester film. It has excellent physical properties, chemical properties, dimensional stability, transparency, and recyclability, and can be widely used in fields such as magnetic recording, photosensitive materials, electronics, electrical insulation, industrial films, packaging and decoration, screen protection, and optical-grade mirror surface protection. Existing protective films are all based on PC films. After adding such ordinary protective films, they are prone to scratching and have low light transmittance. Content of the Utility Model

[0003] The purpose of the utility model is to provide a light control film with higher light transmittance, aiming to solve the technical problems of being prone to scratching and having low light transmittance in the prior art.

[0004] To achieve the above purpose, the light control film with higher light transmittance provided by the embodiment of the utility model includes a PET release film layer, an installation adhesive layer, a metal heat insulation film, a transparent substrate layer, a transparent adhesive layer, a high light transmittance film layer, an adhesive layer, an anti-ultraviolet film layer, a composite adhesive layer, and a hardening protective layer. The PET release film layer, installation adhesive layer, metal heat insulation film, transparent substrate layer, transparent adhesive layer, high light transmittance film layer, adhesive layer, anti-ultraviolet film layer, composite adhesive layer, and hardening protective layer are arranged in sequence from bottom to top; the upper part of the PET release film layer is connected to the metal heat insulation film through the installation adhesive layer, and the upper part of the anti-ultraviolet film layer is connected to the hardening protective layer through the composite adhesive layer; the lower part of the high light transmittance film layer is connected to the transparent substrate layer through the transparent adhesive layer, and the upper part is connected to the anti-ultraviolet film layer through the adhesive layer; the surface of the transparent substrate layer is provided with a light transmission area and a light absorption area, and a plurality of each are provided and arranged alternately, and the light transmission area and the light absorption area form a first optical structure.

[0005] As an optional solution of the utility model, the high light transmittance film layer is obtained by coating a solution of polypropylene resin, an ultraviolet UV absorber, a photoinitiator, and a surfactant dissolved in ethanol.

[0006] As an optional solution of the utility model, the PET release film layer is a single-silicon PET release film or a TPX release film or a PP release film or a matte film, and the thickness of the PET release film layer is 10 - 20 microns.

[0007] As an optional solution of the utility model, the installation adhesive layer is an OCA optical adhesive layer, and the thickness of the OCA optical adhesive layer is 10 - 20 microns.

[0008] As an alternative embodiment of the present utility model, the thickness of the ultraviolet-proof film layer is 30-40 microns.

[0009] As an alternative embodiment of the present utility model, the composite adhesive layer uses a UV pressure-sensitive adhesive, and the thickness of the composite adhesive layer is 5-10 microns.

[0010] As an alternative embodiment of the present utility model, the hard protective layer uses a TPU scratch-resistant film, and the thickness of the hard protective layer is 10-18 microns.

[0011] One or more of the above technical solutions in the light control film with higher light transmittance provided by the embodiments of the present utility model have at least one of the following technical effects:

[0012] The light control film with higher light transmittance provided by the present application includes a PET release film layer, a mounting adhesive layer, a high light transmittance film layer, an ultraviolet-proof film layer, a composite adhesive layer, and a hard protective layer. The light absorption area of the transparent substrate layer absorbs light and restricts the passage of light, and the light passes through the light transmission area, thereby forming a privacy protection structure. By setting the high light transmittance film layer, the light transmittance can be improved, the light input can be increased, and the clarity can be improved. By setting the hard protective layer, the wear resistance and surface hardness can be improved. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic internal structure diagram of the light control film with higher light transmittance provided by the embodiments of the present utility model.

[0015] Among them, the reference numerals in the drawings are as follows:

[0016] 1. PET release film layer; 2. Mounting adhesive layer; 3. High light transmittance film layer; 4. Ultraviolet-proof film layer; 5. Composite adhesive layer; 6. Hard protective layer; 7. Metal heat insulation film; 8. Transparent substrate layer; 10. Transparent adhesive layer; 11. Adhesive layer.

[0017] 81. Light transmission area; 82. Light absorption area. Detailed Embodiments

[0018] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as limiting the present utility model.

[0019] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0021] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0022] In one embodiment of the present utility model, as Figure 1As shown in the figure, a light control film with higher light transmittance is provided, including a PET release film layer 1, an installation adhesive layer 2, a metal heat insulation film 7, a transparent substrate layer 8, a transparent adhesive layer 10, a high light transmittance film layer 3, an adhesive layer 11, an anti-ultraviolet film layer 4, a composite adhesive layer 5, and a hard protective layer 6. The PET release film layer 1, the installation adhesive layer 2, the metal heat insulation film 7, the transparent substrate layer 8, the transparent adhesive layer 10, the high light transmittance film layer 3, the adhesive layer 11, the anti-ultraviolet film layer 4, the composite adhesive layer 5, and the hard protective layer 6 are arranged in sequence from bottom to top. The upper part of the PET release film layer 1 is fixedly connected to the metal heat insulation film 7 through the installation adhesive layer 2, and the upper part of the anti-ultraviolet film layer 4 is fixedly connected to the hard protective layer 6 through the composite adhesive layer 5. The lower part of the high light transmittance film layer 3 is connected to the transparent substrate layer 8 through the transparent adhesive layer 10, and the upper part is connected to the anti-ultraviolet film layer 4 through the adhesive layer 11. The surface of the transparent substrate layer 8 is provided with a light transmission area 81 and a light absorption area 82. There are multiple light transmission areas 81 and light absorption areas 82, and they are arranged alternately. The light transmission area 81 and the light absorption area 82 form a first optical structure. The first optical structure forms an anti-peeping structure through the light transmission area 81 and the light absorption area 82. The light absorption area 82 absorbs light and restricts the passage of light, and the light passes through the light transmission area 81, thus forming an anti-peeping structure. The transparent substrate layer 8 is selected from any one of polyethylene terephthalate (PET), polycarbonate (PC), polyvinyl chloride (PVC), and polyimide (PI). The first optical structure is formed as follows: light-curing white glue protruding outward is arranged at intervals on the surface of the transparent substrate layer 8, and the light-curing white glue forms the light transmission area 81 after UV curing; then black glue is arranged between the two light transmission areas 81, and the black glue forms the light absorption area 82 after curing. For the light control film with higher light transmittance provided by this application, the light absorption area 82 of the transparent substrate layer 8 absorbs light and restricts the passage of light, and the light passes through the light transmission area 81, thus forming an anti-peeping structure. By setting the high light transmittance film layer 3, the light transmittance can be improved, the light input amount can be increased, and the clarity can be improved. By setting the hard protective layer 6, the wear resistance and surface hardness can be improved.

[0023] In another embodiment of the present invention, the high light transmittance film layer 3 is obtained by coating a solution of polypropylene resin, an ultraviolet (UV) absorber, a photoinitiator, and a surfactant dissolved in ethanol, which can improve the light transmittance, increase the light input amount, and improve the clarity.

[0024] In another embodiment of the present invention, the PET release film layer 1 is a single-silicon PET release film, or a TPX release film, or a PP release film, or a matte film. The thickness of the PET release film layer 1 is 10 - 20 microns, preferably 15 microns.

[0025] In another embodiment of the present invention, the installation adhesive layer 2 is an OCA optical adhesive layer. The thickness of the OCA optical adhesive layer is 10 - 20 microns, preferably 15 microns.

[0026] In another embodiment of the present utility model, the thickness of the ultraviolet protection film layer 4 is 30 - 40 microns, preferably 32 microns. A UV coating is provided on the ultraviolet protection film layer 4 to absorb ultraviolet rays and improve the heat insulation effect.

[0027] In another embodiment of the present utility model, the composite adhesive layer 5 uses a UV pressure-sensitive adhesive, and the thickness of the composite adhesive layer 5 is 5 - 10 microns, preferably 6 microns.

[0028] In another embodiment of the present utility model, the hardening protection layer 6 uses a TPU scratch-resistant film, and the thickness of the hardening protection layer 6 is 10 - 18 microns, preferably 15 microns.

[0029] The light control film with higher light transmittance provided by this application. The light absorption area 82 of the transparent substrate layer 8 absorbs light and restricts the passage of light, and the light passes through the light transmission area 81, thereby forming a privacy protection structure. By setting the high light transmittance film layer 3, the light transmittance can be improved, the light input can be increased, and the clarity can be improved. By setting the hardening protection layer 6, the wear resistance and surface hardness can be improved.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A light control film with higher light transmittance, characterized in that, It includes a PET release film layer, an installation adhesive layer, a metal heat insulation film, a transparent substrate layer, a transparent adhesive layer, a high light transmittance film layer, an adhesive layer, an anti-ultraviolet film layer, a composite adhesive layer and a hard protective layer. The PET release film layer, the installation adhesive layer, the metal heat insulation film, the transparent substrate layer, the transparent adhesive layer, the high light transmittance film layer, the adhesive layer, the anti-ultraviolet film layer, the composite adhesive layer and the hard protective layer are arranged in sequence from bottom to top. The upper part of the PET release film layer is connected to the metal heat insulation film through the installation adhesive layer, and the upper part of the anti-ultraviolet film layer is connected to the hard protective layer through the composite adhesive layer. The lower part of the high light transmittance film layer is connected to the transparent substrate layer through the transparent adhesive layer, and the upper part is connected to the anti-ultraviolet film layer through the adhesive layer. The surface of the transparent substrate layer is provided with a light transmission area and a light absorption area. There are multiple light transmission areas and light absorption areas, and they are arranged alternately. The light transmission areas and the light absorption areas form a first optical structure.

2. The light control film with a higher light transmittance according to claim 1, wherein, The high light transmittance film layer is obtained by coating a solution in which polypropylene resin, a UV absorber containing ultraviolet rays, a photoinitiator and a surfactant are dissolved in ethanol.

3. The light control film with higher light transmittance according to claim 1, characterized in that, The PET release film layer is a single-silicon PET release film or a TPX release film or a PP release film or a matte film, and the thickness of the PET release film layer is 10-20 microns.

4. A light control film with higher light transmittance according to claim 1, characterized in that, The installation adhesive layer is an OCA optical adhesive layer, and the thickness of the OCA optical adhesive layer is 10-20 microns.

5. A light control film with higher light transmittance according to claim 1, characterized in that, The thickness of the anti-ultraviolet film layer is 30-40 microns.

6. The light control film with higher light transmittance according to claim 1, wherein The composite adhesive layer uses a UV pressure-sensitive adhesive, and the thickness of the composite adhesive layer is 5-10 microns.

7. A light control film with higher light transmittance according to claim 1, characterized in that The hard protective layer uses a TPU scratch-resistant film, and the thickness of the hard protective layer is 10-18 microns.

Images