CN210572841U

CN210572841U - Optical reflector plate

Info

Publication number: CN210572841U
Application number: CN201921650300.9U
Authority: CN
Inventors: 邓建东
Original assignee: Dongguan Light Chi Photoelectric Co ltd
Current assignee: Dongguan Light Chi Photoelectric Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-19
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses an optical reflection piece, include: a substrate; a base coat coated on a surface of the substrate; and the bottom coating, the silver reflecting layer and the active metal layer are arranged in the sequence of the bottom coating, the silver reflecting layer and the active metal layer or in the sequence of the bottom coating, the active metal layer and the silver reflecting layer. A protective layer coated on the silver reflecting layer/active metal layer; wherein, the thickness of the substrate is 40-90 μm, the thickness of the bottom coating is 0.5-3 μm, the thickness of the silver reflecting layer is 15-60 nm, the total thickness of the active metal layer is 60-120 nm, and the thickness of the protective layer is 2-3 μm. The utility model discloses an optics reflector plate can effectually avoid the silver layer oxidation, and solves current reflector plate and reduce silver layer thickness and cause the problem that the reflectivity reduces.

Description

Optical reflector plate

Technical Field

The utility model relates to an optical film technical field, in particular to optical reflection piece.

Background

The reflector plate reflects unscattered light sources and then enters the light conduction region, the reflection mode of the reflector plate is mirror reflection, and the utilization rate of light is improved through the mirror reflection.

Referring to fig. 1, a conventional PET substrate is coated with a film, which is a common reflective sheet. The reflective sheet is formed by sputtering a metallic silver reflective material 002 on an undercoat layer 001 of a PET substrate 000 and then coating a protective coating 003. Firstly, because the protective coating is not in place, the metal silver coating can be affected by the temperature and the humidity of the environment to generate oxidation discoloration, thereby affecting the reflection efficiency of the reflector plate; secondly, the quality of the reflector plate is influenced by the thickness of the metal silver reflecting material, when the thickness of the metal silver reflecting layer is not enough, the metal silver cannot form a mirror surface on the PET substrate, so that incident light penetrates through the silver layer and is emitted from one side of the reflector plate, which is far away from the incident light, so that the light utilization rate is reduced, and when the thickness of the metal silver reflecting layer is thicker, the production cost of the reflector plate is increased due to the high price of the metal silver.

Therefore, the present inventors have designed an optical reflection sheet with high reflectivity, which can effectively prevent the oxidation of silver layer, in combination with the requirement of production process.

SUMMERY OF THE UTILITY MODEL

The technical problem of the solution of the utility model is to the defect of existence among the above-mentioned prior art, provide an optical reflector plate, this optical reflector plate can effectually avoid silver layer oxidation, solves the problem that current reflector plate reduces silver layer thickness and causes the reflectivity to reduce.

In order to solve the technical problem, the utility model discloses the technical scheme who takes as follows, an optical reflection piece, include:

a substrate;

a base coat coated on a surface of the substrate;

and the bottom coating, the silver reflecting layer and the active metal layer are arranged in the sequence of the bottom coating, the silver reflecting layer and the active metal layer or in the sequence of the bottom coating, the active metal layer and the silver reflecting layer.

A protective layer coated on the silver reflecting layer/active metal layer;

wherein, the thickness of the substrate is 40-90 μm, the thickness of the bottom coating is 0.5-3 μm, the thickness of the silver reflecting layer is 15-60 nm, the total thickness of the active metal layer is 60-120 nm, and the thickness of the protective layer is 2-3 μm.

As a further elaboration of the above technical solution,

in the above technical solution, the silver reflective layer is vacuum-plated on the undercoat layer, the active metal layer is vacuum-plated on the silver reflective layer, and the protective layer is coated on the active metal layer.

In the above technical solution, the active metal layer is vacuum-plated on the undercoat layer, the silver reflective layer is vacuum-plated on the active metal layer, and the protective layer is coated on the silver reflective layer.

In the above technical scheme, the base material is a PET base material.

In the above technical scheme, the primer layer is a UV glue primer layer or a thermosetting resin primer layer or a polyester primer layer or a polyurethane primer layer.

In the above technical scheme, the protective layer is a UV glue protective layer or a thermal hardening resin protective layer.

In the above technical scheme, the reflective layer is provided with a layer of active metal layer, and the layer of active metal layer is an aluminum metal layer or a titanium metal layer or an aluminum-titanium alloy layer.

Compared with the prior art, the utility model has the advantages that the reflector plate of the utility model adopts wet coating of the bottom coating on the substrate to keep the air and water on the substrate and prolong the service life of the reflector plate; the utility model continuously coats the silver layer with aluminum and/or titanium for protection, avoids the silver layer from being oxidized by utilizing the high activity of aluminum or titanium, simultaneously, the price of metal aluminum and titanium is lower than that of silver, thereby effectively reducing the thickness of silver and complementing the reflectivity of the reflector plate reduced by the reduction of the thickness of silver; furthermore, the utility model discloses a reflector plate oxidation resistance is strong, reflection efficiency is high, provide the light utilization ratio.

Drawings

FIG. 1 is a structural view of a conventional PET reflector sheet;

fig. 2 is a structural view of a reflector sheet according to embodiment 1 of the present invention;

fig. 3 is another structural view of the reflection sheet according to embodiment 1 of the present invention;

fig. 4 is a structural view of a reflection sheet according to embodiment 2 of the present invention;

fig. 5 is another structural view of a reflection sheet according to embodiment 2 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Example 1

Referring to fig. 2-3, an optical reflective sheet comprising:

a substrate 100, in this embodiment, the substrate 100 may be a PET substrate, and in this embodiment, the substrate 100 is a transparent PET substrate, and the optical reflection sheet enters light from the side of the transparent PET substrate;

a primer layer 200 coated on a surface of the substrate 100, the surface being opposite to the light incident side of the optical reflection sheet, in this embodiment, the primer layer 200 is a gas-and water-retaining UV glue primer layer or a thermosetting resin primer layer or a polyester primer layer or a polyurethane primer layer coated on the substrate 100 by a wet method;

a reflective layer 300, vacuum-plated on the bottom coating 200, comprising a silver reflective layer 301 and at least one active metal layer 302, wherein the silver reflective layer 301 is vacuum-plated on the bottom coating 200, and the active metal layer 302 is vacuum-plated on the silver reflective layer 301;

a protection layer 400 coated on the active metal layer 302, in this embodiment, the protection layer 400 is a UV glue protection layer cured by UV or a hardened resin protection layer formed by surface thermal hardening resin, in practice, the protection layer 400 and the bottom coating layer 200 may be provided as coating structures with the same material;

wherein, the thickness of the substrate 100 is 40-90 μm, preferably 75 μm, the thickness of the bottom coating 200 is 0.5-3 μm, preferably 2 μm, the thickness of the silver reflecting layer 301 is 15-60 nm, preferably 30nm, the total thickness of the active metal layer 302 is 60-120 nm, preferably 90nm, and the thickness of the protective layer is 2-3 μm, preferably 3 μm.

In an optional implementation manner of this embodiment, the reflective layer 300 is provided with an active metal layer 302, and the active metal layer 302 is an aluminum metal layer 302-1, a titanium metal layer 302-2, or an aluminum-titanium alloy layer.

In another optional implementation of this embodiment, the reflective layer 300 is provided with two active metal layers 302, and the two active metal layers 302 are an aluminum metal layer 302-1 and a titanium metal layer 302-2, respectively, or may be an aluminum metal layer 302-1 and an aluminum-titanium alloy layer or a titanium alloy layer 302-2 and an aluminum-titanium alloy layer; in practice, the order of the aluminum metal layer 302-1, the titanium metal layer 302-2 and the aluminum-titanium alloy may be set according to the requirement, that is, the aluminum metal layer 302-1 may be disposed on the silver reflective layer 301, or the titanium metal layer 302-2 may be disposed on the silver reflective layer 301, or the aluminum-titanium alloy may be disposed on the silver reflective layer 301, and preferably, the thicknesses of the two active metal layers are, in order: 60nm and 30 nm.

Example 2

Referring to fig. 3-4, an optical reflective sheet comprising:

a substrate 500, in this embodiment, the substrate 500 may be a PET substrate, and the PET substrate may be transparent, white, black, or gray PET, and the optical reflection sheet enters light from the side of the protection layer 800;

a primer layer 600 coated on a surface of the substrate 500, the surface being located on a same side as the light incident side of the optical reflection sheet, in this embodiment, the primer layer 600 is a layer of air-and water-retaining UV glue primer layer or thermosetting resin primer layer or polyester primer layer or polyurethane primer layer coated on the substrate 500 by a wet method;

a reflective layer 700 vacuum-plated on the bottom coating 600, comprising a silver reflective layer 701 and at least one active metal layer 602, wherein the active metal layer 702 is vacuum-plated on the bottom coating 600, and the silver reflective layer 701 is vacuum-plated on the active metal layer 702; .

A protection layer 800 coated on the silver reflective layer 701, in this embodiment, the protection layer 800 is a UV glue protection layer cured by UV or a hardened resin protection layer formed by surface thermal hardening resin, in practice, the protection layer 800 and the bottom coating layer 600 may be provided as coating structures with the same material;

wherein, the thickness of the substrate 500 is 40 to 90 μm, preferably 75 μm, the thickness of the bottom coating 600 is 0.5 to 3 μm, preferably 2 μm, the thickness of the silver reflecting layer 701 is 15 to 60nm, preferably 30nm, the total thickness of the active metal layer 702 is 60 to 120nm, preferably 90nm, and the thickness of the protective layer 800 is 2 to 3 μm, preferably 3 μm.

In an optional implementation manner of this embodiment, the reflective layer 700 is provided with a layer of active metal layer 702, and the layer of active metal layer 702 is an aluminum metal layer 702-1 or a titanium metal layer 702-2 or a titanium alloy layer.

In another optional implementation of this embodiment, the reflective layer 700 is provided with two active metal layers 702, and the two active metal layers 702 are an aluminum metal layer 702-1 and a titanium metal layer 702-2, respectively, or may be an aluminum metal layer 702-1 and an aluminum-titanium alloy layer or a titanium alloy layer 702-2 and an aluminum-titanium alloy layer; in practice, the order of the aluminum metal layer 702-1 and the titanium metal layer 702-2 may be set as desired, that is, the aluminum metal layer 702-1 may be provided on the undercoat layer 600, or the titanium metal layer 702-2 may be provided on the undercoat layer 600, or the aluminum titanium alloy layer may be provided on the undercoat layer 600, and preferably, and the thicknesses of the two active metal layers are, in order: 60nm and 30 nm.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. An optical reflective sheet, comprising:

a substrate;

a base coat coated on a surface of the substrate;

the reflecting layer is plated on the bottom coating in vacuum and comprises a silver reflecting layer and at least one active metal layer, and the bottom coating, the silver reflecting layer and the active metal layer are arranged in the sequence of the bottom coating, the silver reflecting layer and the active metal layer or in the sequence of the bottom coating, the active metal layer and the silver reflecting layer;

a protective layer coated on the silver reflecting layer/active metal layer;

2. The optical reflection sheet according to claim 1, wherein the silver reflection layer is vacuum-plated on the primer layer, the active metal layer is vacuum-plated on the silver reflection layer, and the protective layer is coated on the active metal layer.

3. The optical reflection sheet according to claim 1, wherein the active metal layer is vacuum-plated on the primer layer, the silver reflection layer is vacuum-plated on the active metal layer, and the protective layer is coated on the silver reflection layer.

4. An optical reflection sheet according to claim 2 or 3, wherein the substrate is a PET substrate.

5. An optical reflection sheet according to claim 4, wherein the primer layer is a UV adhesive primer layer or a thermosetting resin primer layer or a polyester primer layer or a polyurethane primer layer.

6. An optical reflection sheet according to claim 5, wherein the protective layer is a UV glue protective layer or a thermosetting resin protective layer.

7. An optical reflective sheet according to claim 6, wherein the reflective layer is provided with an active metal layer, and the active metal layer is an aluminum metal layer, a titanium metal layer or an aluminum-titanium alloy layer.