CN218989142U

CN218989142U - Black grid adhesive tape with excellent air exhaust property

Info

Publication number: CN218989142U
Application number: CN202220587177.6U
Authority: CN
Inventors: 金成坤; 纪飞; 石锐; 朴明基; 陈月娇
Original assignee: Suzhou Topsun New Material Technology Co ltd
Current assignee: Suzhou Topsun New Material Technology Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2023-05-09
Anticipated expiration: 2032-03-17

Abstract

The application discloses black net sticky tape with excellent exhaust nature, including the substrate layer, the top surface coating printing ink on substrate layer is formed with the printing ink layer, printing ink layer top surface pastes and covers first pressure sensitive adhesive layer, first pressure sensitive adhesive layer top surface pastes and covers first release film layer, substrate layer bottom surface pastes and covers second pressure sensitive adhesive layer, second pressure sensitive adhesive layer bottom surface pastes and covers the second release film layer. The utility model is suitable for electronic products.

Description

Black grid adhesive tape with excellent air exhaust property

Technical Field

The present application relates to an electronic product mesh tape, and more particularly, to a black mesh tape having excellent air exhaust properties.

Background

The electronic products such as mobile phones or flat panels used at present need adhesive tapes for bonding, especially large-area bonding, such as bonding of screens. The common adhesive tape adhesion can cause the problems of air bubbles, poor application and the like, and seriously affects the product yield. It is therefore necessary to develop a mesh tape having excellent air-exhausting properties.

Most adhesive tapes in the prior art have poor air exhaust and poor adhesion, and the adhesive tapes need to be torn off for re-adhesion, so that the process flow and the product yield are seriously affected. The electronic product parts are bonded, especially the screen is bonded, and excellent shielding effect is required. In the prior art, in order to achieve the shielding effect, black pigment is added into a black base material or a pressure-sensitive adhesive, the black PET is generally incapable of achieving good shielding degree, the black pigment is added into the pressure-sensitive adhesive to greatly reduce the viscosity performance of the pressure-sensitive adhesive, and the problems of stripping or adhesive residue and the like can occur when double-sided adhesive is used. In order to achieve the exhaust or shielding performance, the prior art double faced adhesive tape cannot achieve ultrathin double faced adhesive tape, is thick in whole and cannot adapt to the thickness requirement of customers on the double faced adhesive tape.

Disclosure of Invention

The utility model aims to provide a black mesh adhesive tape with excellent air exhaust property.

In order to achieve the above purpose, the present utility model provides the following technical solutions.

The embodiment of the application discloses black net sticky tape with excellent exhaust, including the substrate layer, the top surface coating printing ink on substrate layer is formed with the printing ink layer, printing ink layer top surface pastes and covers first pressure sensitive adhesive layer, first pressure sensitive adhesive layer top surface pastes and covers first release coating layer, substrate layer bottom surface pastes and covers second pressure sensitive adhesive layer, second pressure sensitive adhesive layer bottom surface pastes and covers the second release coating layer.

Preferably, in the black mesh tape having excellent exhaust properties as described above, the substrate layer is a PET substrate layer having a thickness of 1 to 8 μm.

Preferably, in the above black mesh tape having excellent air-exhaust properties, the ink layer has a thickness of 1 to 5 μm.

Preferably, in the above black mesh tape having excellent air-exhaust properties, the first pressure-sensitive adhesive layer has a thickness of 5 to 30 μm.

Preferably, in the above black mesh tape having excellent air-release properties, the second pressure-sensitive adhesive layer has a thickness of 5 to 40 μm.

Preferably, in the black mesh tape having excellent air-exhaust properties described above, the first release film layer has a thickness of 12 to 75 μm.

Preferably, in the black mesh tape having excellent air-exhaust properties described above, the second release film layer has a thickness of 25 to 150 μm.

Preferably, in the black mesh tape having excellent air exhaust properties, the second release film layer is formed in a mesh shape by laminating PE material on PET material.

Preferably, in the black mesh tape having excellent air exhaust properties described above, the mesh shape is square, diamond or hexagon.

Preferably, in the black mesh tape having excellent air-exhaust properties, the mesh depth of the mesh shape is 1 to 15um, the mesh width is 100 to 300um, and the mesh pitch is 5 to 50um.

Compared with the prior art, the utility model coats 1-3 layers of printing ink through the ultrathin PET substrate, and the whole thickness can be controlled between 3-10 um; the ultra-thin PET substrate is coated with a special black ink layer and then is coated with pressure sensitive adhesive, so that the product has stable performance, and the light transmittance can reach below 0.5%; the pressure-sensitive adhesive with proper hardness is selected and matched with the grid release film, so that a certain texture is formed on the corresponding adhesive surface, the exhaust performance is excellent in the actual pasting process, and the grid mark disappears after a period of pasting, so that the use of the product is not affected.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing a black mesh tape having excellent air discharge properties according to an embodiment of the present utility model;

fig. 2 is a schematic diagram showing the gradual disappearance of the grid over time in an embodiment of the present utility model.

Detailed Description

The following detailed description of the technical solutions according to the embodiments of the present utility model will be given with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, the black mesh tape with excellent air exhaust performance comprises a substrate layer 10, a black ink layer 20, a first pressure-sensitive adhesive layer 30, a second pressure-sensitive adhesive layer 40, a first release film layer 50 and a second release film layer 60, wherein the black ink is coated on the substrate layer, the first pressure-sensitive adhesive layer is coated on the black ink layer, the first release film layer is coated on the first pressure-sensitive adhesive layer, the second pressure-sensitive adhesive layer is coated on the lower side of the substrate layer, and the second release film layer is coated on the lower side of the second pressure-sensitive adhesive layer. The substrate layer adopts PET substrate with thickness of 1-8 μm; the thickness of the black ink layer is 1 to 5 mu m, and the ink coating times are 1 to 3 times; the thickness of the first pressure-sensitive adhesive layer is 5 to 30 μm, preferably 5 to 15 μm; the thickness of the second pressure-sensitive adhesive layer is 5 to 40 μm, preferably 10 to 25 μm; the thickness of the first release film layer is 12 to 75 mu m, preferably 36 to 50 mu m, and the first release film is a single silicon release film made of PET (polyethylene terephthalate); the thickness of the second release film layer is 25 to 150 mu m, preferably 75 to 135 mu m, and the second release film is made of PET material and PE material is coated on the second release film layer to form a grid shape of grid shape.

The grid shape comprises a square, a diamond or a hexagon, the depth of the grid is 1-15 um, the width of the grid is 100-300 um, and the spacing of the grid is 5-50 um.

The technical scheme is that the single-sided grid has good air exhaust property and application property when the screen is adhered to the grid surface. The grid lines play a good role in exhausting when the grid surface is applied, and gradually disappear along with the time change after the application, so that the bonding effect of the product is not affected. See fig. 2. The grid gradually tapers after 6 hours. The grid with the proper hardness and the special grid lines is selected, so that the grid adhesive tape has high air exhaust property when being applied, the grid lines disappear after the adhesive tape is applied, and the product performance is not affected. The black ink layer is selectively coated on the substrate, so that the black ink layer has very good shielding performance compared with black PET, and has very good adhesive tape performance stability compared with the black pigment added in the pressure sensitive adhesive.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely exemplary of the application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the application and are intended to be comprehended within the scope of the application.

Claims

1. The black grid adhesive tape with excellent air exhaust performance is characterized by comprising a substrate layer, wherein the top surface of the substrate layer is coated with ink to form an ink layer, the top surface of the ink layer is coated with a first pressure-sensitive adhesive layer, the top surface of the first pressure-sensitive adhesive layer is coated with a first release film layer, the bottom surface of the substrate layer is coated with a second pressure-sensitive adhesive layer, the bottom surface of the second pressure-sensitive adhesive layer is coated with a second release film layer, the substrate layer is a PET substrate layer, the thickness is 1-8 mu m, the thickness of the ink layer is 1-5 mu m, the thickness of the first pressure-sensitive adhesive layer is 5-30 mu m, the thickness of the second pressure-sensitive adhesive layer is 5-40 mu m, the thickness of the first release film layer is 12-75 mu m, the thickness of the second release film layer is 25-150 mu m, the grid shape is formed by spraying PE material on the PET grid, the grid shape is square, the grid shape is diamond or the grid shape has a depth of 1-15 mu m, the width of 100 mu m is 100 mu m, and the grid pitch is 5 mu m-50 mu m.