CN115097671A - Splicing type adhesive for Chinese character kou and preparation method of adhesive for Chinese character kou - Google Patents

Abstract

The invention aims to solve the technical problem of low yield in production of a glue for Chinese character 'kou' shaped characters in the prior art, improves the structure of the glue for Chinese character 'kou' shaped characters, and discloses a splicing type glue for Chinese character 'kou' shaped characters and a preparation method of the glue for Chinese character 'kou' shaped characters. The square glue comprises two first frames arranged in parallel and two second frames arranged in parallel, the first frames are perpendicular to the second frames, and the end parts of the first frames are over against the inner side walls of the second frames; first frame is including the double-sided adhesive layer one that is located the top layer from type layer one and is located the bottom, and the second frame is including the double-sided adhesive layer two that is located the top layer from type layer two and is located the bottom from the type surface facing of type layer one, and the tip that the protection film corresponds the second frame extends forward and pastes the bottom to double-sided adhesive layer two. The first double-sided adhesive layer and the second double-sided adhesive layer are isolated by the protective film, so that the adhesion of the two double-sided adhesives is effectively avoided, the phenomena of adhesive pulling and adhesive overflow cannot be caused by subsequent waste discharge, and the production yield of the adhesive with the shape of Chinese character 'kou' is improved to 99%.

Description

Splicing type adhesive for Chinese character kou and preparation method of adhesive for Chinese character kou

Technical Field

The invention relates to the technical field of liquid crystal display, in particular to a splicing type square adhesive.

Background

The backlight module in the liquid crystal display module adopts a structure that a rubber frame is matched with a square rubber to fix the liquid crystal panel above the rubber frame. The adhesive tape for Chinese character 'kou' generally adopts a splicing structure in which a transverse strip and a vertical strip are vertically butted, the double-sided adhesive tape of the transverse strip and the vertical strip inevitably has the phenomenon of end overlapping when being generated and attached, the poor phenomena of adhesive pulling and adhesive overflow can be caused when the adhesive tape for Chinese character 'kou' is subsequently wasted, and the manufacturing yield of the adhesive tape for Chinese character 'kou' is only 60-70%.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention discloses a splicing type adhesive for Chinese characters, which aims to achieve the purpose of improving the yield of the adhesive for Chinese characters.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a splicing type square adhesive comprises two first frames arranged in parallel and two second frames arranged in parallel, wherein the first frames are perpendicular to the second frames, and the end parts of the first frames are over against the inner side walls of the second frames; first frame is including the double-sided adhesive layer one that is located the top layer from type layer one and is located the bottom, the second frame is including the double-sided adhesive layer two that is located the top layer from type layer two and is located the bottom, the non-from type surface facing of type layer one has the protection film, the protection film corresponds the tip of second frame extends forward and pastes extremely the bottom of double-sided adhesive layer two.

Compared with the prior art, the technical scheme has the beneficial effects that:

one end of the protective film is located above the first frame, the other end of the protective film is located below the second frame, the adhesive surface of the second frame is attached to the upper portion of the protective film, even if the first frame and the second frame are overlapped in the production process, the first double-sided adhesive layer and the second double-sided adhesive layer are isolated through the protective film, two double-sided adhesive tapes are effectively prevented from being adhered, the phenomena of adhesive pulling and adhesive overflowing cannot be caused by subsequent waste discharge, and the production yield of the glue with the shape of Chinese character 'kou' is improved to 99%.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic view of a glue according to a first embodiment;

FIG. 2 is a side view of the frame of the glue according to the first embodiment;

FIG. 3 is a schematic view illustrating a protection film and a first frame according to a first embodiment;

FIG. 4 is a diagram illustrating a protection film and a first frame according to a second embodiment;

fig. 5 is a schematic structural view of the frame before the frame is cut according to the first embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following examples and the accompanying drawings so that those skilled in the art can implement the invention by referring to the description.

Example one

The splicing type square adhesive shown in fig. 1 comprises two first frames 10 arranged in parallel and two second frames 20 arranged in parallel, wherein the first frames are perpendicular to the second frames, and the end parts of the first frames are over against the inner side walls of the second frames. Referring to fig. 2, the first frame includes the first release layer 11 that is located the top layer and the first double-sided adhesive layer 12 that is located the bottom, and the second frame includes the second release layer 21 that is located the top layer and the second double-sided adhesive layer 22 that is located the bottom, and the both ends of the non-release surface of the first release layer are respectively laminated with the protection film 30 of having the PE or PET material of pasting, and the tip that the protection film corresponds second frame 20 extends forward and pastes to the bottom of double-sided adhesive layer two 22. The length of the protective film which is attached to the upper part of the first release layer is 5mm-10 mm.

The manufacturing process of the square glue shown in figure 1 comprises the following steps:

s1, two parallel first frames with the distance of 5mm-10mm are used as the first basic element 40, and arrays are attached to the bottom plate 50 by the set step pitch;

s2, attaching a protective film on each first frame;

s3, respectively attaching a second base member 60 to both sides of the first base member along the length direction of the base plate, wherein the second base member presses the protective film on the base plate;

s4 die-cutting the shape of the first frame on the second basic piece and then discharging waste;

s5, cutting the bottom plate along the space between the two first frames in the first basic piece to obtain the square glue.

Even if the first frame and the second frame are overlapped in the production process, the first double-sided adhesive layer and the second double-sided adhesive layer are isolated through the protective film, so that the adhesion of the two double-sided adhesives is avoided, the phenomena of adhesive pulling and adhesive overflowing cannot be caused by subsequent waste discharge, and the production yield of the square adhesive is improved to 99%.

The second foundation member needs to flatly press the protective film on the bottom plate, so that the protective film is prevented from wrinkling, a through hole can be formed in the position, corresponding to the protective film, of the bottom plate, the protective film is tightly adsorbed on the bottom plate by adopting a negative pressure process in the production process, and the protective film can be effectively prevented from wrinkling.

Preferably, the peel force of the protective film is 10g/mm to 20 g/mm. Specifically, the peel force of the protective film was 10g/mm, 11g/mm, 12g/mm, 13g/mm, 14g/mm, 15g/mm, 16g/mm, 17g/mm, 18g/mm, 19g/mm, 20 g/mm.

Preferably, the thickness of the protective film is 0.05mm to 0.08 mm. Specifically, the thickness of the protective film is 0.05mm, 0.06mm, 0.07mm, 0.08 mm.

Preferably, the width of the protective film is 1mm-2mm larger than the width of the first double-sided adhesive layer, and the protective film which is arranged in the width direction can cover the first double-sided adhesive layer in all directions, so that the second double-sided adhesive layer is prevented from contacting with the first double-sided adhesive layer.

Preferably, the length of the protective film adhered to the lower part of the second double-sided adhesive layer is 5mm-10mm, and the specific length is as follows: 5mm, 6mm, 7mm, 8mm, 9mm, 10 mm. The setting of this length is according to the width design of two-sided glue film two, and suitable length both can prevent that the protection film from upwarping before the laminating of second basis piece, also makes things convenient for tearing of protection film to remove.

Example two

The difference between the present embodiment and the first embodiment is:

referring to fig. 4, a protective film 30 is attached to the non-release surface of the release layer i, and two ends of the protective film respectively extend forward and are attached to the bottom of the corresponding double-sided adhesive layer ii 22.

The two protective films are used in one adhesive for the square, so that the adhesive surfaces of the four splicing parts are isolated, and the adhesive for the square is convenient to produce and manufacture.

Preferably, a handle 31 is provided at the middle portion of the protective film to protrude outward, so that the protective film can be easily removed by holding the handle when removing the protective film. The handle portion dislocation set of protection film both sides so can avoid adjacent mouth word to glue the protection film of in overlapping, the mouth word of being convenient for glues production.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A splicing type square adhesive comprises two first frames arranged in parallel and two second frames arranged in parallel, wherein the first frames are perpendicular to the second frames, and the end parts of the first frames are over against the inner side walls of the second frames; first frame is including the double-sided adhesive layer one that is located the top layer from type layer one and is located the bottom, the second frame is including the double-sided adhesive layer two that is located the top layer from type layer two and is located the bottom, its characterized in that: a protective film is attached to the non-release surface of the release layer I, and the end portion, corresponding to the second frame, of the protective film extends forwards and is attached to the bottom of the double-sided adhesive layer II.

2. The splicing type square glue of claim 1, wherein: the protective film is a PE protective film or a PET protective film.

3. The splicing type square glue of claim 1, wherein: the peel force of the protective film is 10g/mm to 20 g/mm.

4. The splicing type square glue of claim 1, wherein: the thickness of the protective film is 0.05mm-0.08 mm.

5. The splicing type square glue of claim 1, wherein: the width of the protective film is 1mm-2mm larger than the width of the first double-sided adhesive layer.

6. The splicing type square glue of claim 1, wherein: the length of the protective film which is attached to the lower part of the second double-sided adhesive layer is 5mm-10 mm.

7. The splicing type square glue of claim 1, wherein: the protective films are respectively attached to two ends of the non-release surface of the first release layer, and the length of the protective films attached to the upper portion of the first release layer is 5-10 mm.

8. The splicing type square glue according to claim 1, characterized in that: and the non-release surface of the release layer I is attached with one protective film, and two ends of the protective film respectively extend forwards and are attached to the bottoms of the two corresponding double-sided adhesive layers II.

9. The splicing type square glue of claim 8, wherein: the middle part of the protective film is provided with a handle part protruding outwards.

10. The method for preparing the offset adhesive as claimed in claim 1, comprising the steps of:

s1, two parallel first frames with the distance of 5mm-10mm are used as a first basic part, and arrays are attached to the bottom plate by a set step pitch;

s2, attaching a protective film on each first frame;

s3, respectively attaching a second basic member to both sides of the first basic member along the length direction of the bottom plate, and pressing the protective film on the bottom plate by the second basic members;

s4 die-cutting the shape of the first frame on the second basic piece and then discharging waste;

s5, cutting the bottom plate along the space between the two first frames in the first base piece to obtain the square glue.

Images