CN113185926A

CN113185926A - Shading adhesive tape

Info

Publication number: CN113185926A
Application number: CN202110298217.5A
Authority: CN
Inventors: 蒋友兵; 何振梅
Original assignee: Huizhou Haoming Technology Co Ltd
Current assignee: Huizhou Haoming Technology Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-07-30

Abstract

The invention relates to a shading adhesive tape, which comprises a black ink layer, an antistatic layer, a composite reinforcing film layer, a black light absorption layer, a base film layer, an adhesive layer and a single-layer release film layer which are sequentially laminated from top to bottom, wherein the black light absorption layer comprises a metal grid and a black light absorption adhesive layer, the metal grid is embedded in the black light absorption adhesive layer, the thickness of the black light absorption layer is a, the thickness of the metal grid is b, and the thickness of the base film layer is c, so that the requirements are met: 0.5a ≧ b ≧ 0.2a and a ═ e × c, e is a natural base number.

Description

Shading adhesive tape

Technical Field

The invention relates to the field of adhesive tapes, in particular to a shading adhesive tape.

Background

The shading sticky tape is applicable to backlight unit and is LCD panel shading promptly, also plays the fixed action of borduring simultaneously, but the technical problem that current shading sticky tape exists does:

1. the borders of screens of small electronic products such as mobile phones and tablet computers are narrower and narrower, so that the area of an attaching part of the shading adhesive tape on the border of the LCD panel is narrower and narrower, and the border of the LCD panel is not firm and easy to pop open after being attached; the existing shading adhesive tape is easy to leak light.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a light-shading adhesive tape which is applied to shading of a backlight module (an LCD module, an LED module and the like) of an electronic product.

The invention provides a shading adhesive tape, which comprises a base film layer, wherein the lower end of the base film layer is provided with an adhesive layer, the upper end of the base film layer is provided with a black light absorption layer, one end of the adhesive layer, which is far away from the base film layer, is provided with a single-layer release film layer, one end of the black light absorption layer, which is far away from the base film layer, is provided with a composite reinforcing film layer, one end of the composite reinforcing film layer, which is far away from the black light absorption layer, is provided with an antistatic layer, and one end of the antistatic layer, which is far away from the composite reinforcing film layer, is provided with a black ink layer.

The base film layer is a PET transparent base film layer. The single-layer release film layer is a PET single-side release film layer. The shading adhesive tape is connected with the backlight module through the adhesive layer.

Compared with the existing shading adhesive tape, the shading adhesive tape provided by the invention at least has the following beneficial effects:

1. the black light absorption layer of the shading adhesive tape provided by the invention is prepared by compounding a metal grid and a black light absorption adhesive layer. The metal grid is embedded in the black light absorption adhesive layer, and preferably, the metal grid is an aluminum grid. Through burying metal mesh in black extinction gluing layer level, can effectively strengthen the holistic toughness of shading sticky tape and play effective supporting role to black extinction gluing layer for the thickness on the black extinction layer of each section of shading sticky tape is the same, thereby ensures that the shading performance of each section of shading sticky tape is the same. The composite reinforced film layer comprises an aluminum foil layer, two end faces of the aluminum foil layer are coated with adhesive layers, and the composite reinforced film layer is respectively connected with the black light absorption layer and the anti-static layer through the adhesive layers. The composite reinforced film layer can enhance the toughness of the whole shading adhesive tape. According to the invention, the black light absorption layer and the composite reinforced film layer are arranged, so that the light-shading adhesive tape has stronger plasticity, is firmer to an attached object and is not easy to bounce.

2. The shading adhesive tape provided by the invention has the following advantages that the thickness of the black light absorption layer is a, the thickness of the metal grid is b, the thickness of the base film layer is c: when the requirement is met, the shading effect of the shading tape is optimal when 0.5a is more than or equal to b and more than or equal to 0.2a and a is equal to e multiplied by c, wherein e is a natural base number.

3. When the shading adhesive tape provided by the invention is attached to the backlight module, part of light emitted by the backlight module is reflected by the base film layer, and the other part of light entering the base film layer through refraction is completely absorbed by the black light absorption layer, so that the problems of bright light, bright lines and the like of the backlight module are effectively prevented.

4. The shading adhesive tape provided by the invention realizes the aim of multiple shading by arranging the laminated black light absorbing layer, the composite reinforcing film layer and the black ink layer, and has better shading performance

5. The double anti-static layer of the shading adhesive tape can prevent static electricity from being generated, and prevent accidents from being generated and causing unnecessary loss.

The following description will be given with reference to specific examples.

Drawings

The figures further illustrate the invention, but the examples in the figures do not constitute any limitation of the invention.

Fig. 1 is a schematic structural view of the light-shielding tape provided in the present application.

FIG. 2 is a schematic structural view of a composite reinforcing film layer of the light-shielding tape

Wherein the reference numerals are: 1. a single release film layer; 2. an adhesive layer; 3. a base film layer; 4. a black light-absorbing layer; 5. compounding a reinforcing film layer; 51. an aluminum foil layer; 52. an adhesive layer; 6. an antistatic layer; 7. a black ink layer.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, 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, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention. 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, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. Specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and diagonally above the second feature, or merely means that the first feature is less in horizontal height than the second feature.

As shown in fig. 1 and fig. 2, the embodiment provides a light-shielding tape, which includes a black ink layer 7, an antistatic layer 6, a composite reinforcing film layer 5, a black light-absorbing layer 4, a base film layer 3, an adhesive layer 2, and a single-layer release film layer 1 stacked in sequence from top to bottom, wherein when the light-shielding tape is used, the single-layer release film layer 1 and the adhesive layer 2 are separated, and then one end of the adhesive layer 2 away from the base film layer 3 is connected to a backlight module.

In the present application, the black ink layer 6 may be a bright black ink layer or a matte black ink layer. The composite reinforcing film layer 5 includes an aluminum foil layer 51 and adhesive layers 52 coated on two end surfaces of the aluminum foil layer 51. The aluminum foil layer 51 is connected to the black ink layer 6 and the black light absorbing layer 4 through the adhesive layer 52.

An aluminum grid (not shown in the attached drawings) is embedded in the black light absorption layer 4, and the black light absorption layer 4 can effectively absorb redundant light to prevent the phenomenon of bright lines caused by light scattering. The composite reinforcing film layer 5 and the black light absorbing layer 4 enhance the plasticity of the light-shielding adhesive tape.

The black ink layer 6, the composite reinforcing film layer 5, the bonding layer 2 and the single-layer release film layer 1 of the shading tape have different thicknesses and can be changed according to actual needs. The thickness of the black light absorbing layer 4 and the base film layer 3 has an influence on the light shielding effect of the light shielding adhesive tape, and through a plurality of tests and comparisons of the inventor, the inventor finds that: the black light absorption layer is a, the metal grid is b, the base film layer is c, and the thickness of the black light absorption layer is more than or equal to 0.5a and more than or equal to 0.2a, and a is e multiplied by c (wherein e is a natural base number), the light shading effect of the light shading tape is optimal.

The plasticity of the shading sticky tape that this embodiment provided is stronger, makes it more firm to attached object, and difficult bullet is opened, can reach better shading effect.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A light-shielding tape characterized in that: including black printing ink layer, antistatic backing, compound enhancement rete, black extinction layer, base rete, bond line, the individual layer that stacks gradually from type rete from top to bottom, black extinction layer includes metal grid and black extinction gluing layer, the metal grid buries in the black extinction gluing layer, the thickness on black extinction layer is an, the thickness of metal grid is b, the thickness of base rete is c, satisfies: 0.5a is more than or equal to b and more than or equal to 0.2a, and a is equal to e multiplied by c, wherein e is a natural base number.

2. A light-shielding tape according to claim 1, wherein: the metal grid is an aluminum grid.

3. A light-shielding tape according to claim 1, wherein: the composite reinforced film layer comprises an aluminum foil layer, two end faces of the aluminum foil layer are coated with adhesive layers, and the composite reinforced film layer is respectively connected with the black light absorption layer and the anti-static layer through the adhesive layers.