JPH0516600A - Pressing tool and pasting method for adhesive sheet - Google Patents

Abstract

PURPOSE:To provide a pressing tool for adhesive sheets, which can press an adhesive sheet and a body on which the adhesive sheet is attached while opening holes, and at the same time, removing air bubbles. CONSTITUTION:A pressing tool 1 presses an adhesive sheet 2 and a body 3 on which this adhesive sheet 2 is attached, while removing air bubbles 4 which are generated between those two parts. A plurality of needles 11 are vertically provided on a base plate 14 with the tips facing outward, and at the same time, an elastic body which has a longer thickness than the length of the needles 11 is provided in such a manner that the needles 11 are wrapped by the elastic body 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig adapted to crimp both the pressure-sensitive adhesive sheet and an adherend to which the pressure-sensitive adhesive sheet is adhered while removing bubbles generated from the adherend. is there.

[0002]

2. Description of the Related Art Generally, when an adhesive sheet is attached to an adherend, air bubbles sometimes enter between the adhesive sheet and the adherend.

Conventionally, when removing such bubbles, a pressure sensitive adhesive sheet is pressure-bonded from around the bubbles to increase the internal pressure of the bubbles, and then a small hole such as a cutter is provided with a sharp tip. The pressure-sensitive adhesive sheet and the adherend were pressure-bonded to each other by pushing out air from this hole. At this time, crimping was performed with a fingertip or the like.

[0004]

However, when the pressure-sensitive adhesive sheet and the adherend are pressure-bonded by punching holes in the air bubbles and pushing out air from the holes as in the above-mentioned conventional method, the punching and the pressure-bonding are separately performed. Therefore, depending on the direction in which a hole is formed or the direction in which pressure is applied, inconvenience may occur in that air cannot completely escape.

The present invention has been made in view of such circumstances, and provides a pressure-sensitive adhesive sheet crimping jig and a method for laminating a pressure-sensitive adhesive sheet, which is capable of pressure-bonding a pressure-sensitive adhesive sheet and an adherend while simultaneously removing holes and removing air bubbles. The purpose is to do.

[0006]

The pressure-bonding jig for pressure-sensitive adhesive sheets according to the present invention pressure-bonds both pressure-sensitive adhesive sheets and an adherend on which the pressure-sensitive adhesive sheets are adhered while removing bubbles generated from the adherend. A jig, in which a plurality of needles are vertically hung on the jig body with their tips outside, and an elastic body having a thickness larger than the length of these needles is provided so as to wrap the needles. It has been done.

Further, the method for sticking the adhesive sheet of the present invention is
While pressing the elastic body from above the bubbles generated between the pressure-sensitive adhesive sheet and the adherend on which the pressure-sensitive adhesive sheet is adhered, and compressing the elastic body to increase the internal pressure of the bubble, The bubble is broken from the inside by a needle and the air in the bubble is extracted and attached.

[0008]

The internal pressure of the bubbles is increased by compressing the bubbles generated between the pressure-sensitive adhesive sheet and the adherend on which the pressure-sensitive adhesive sheet is adhered by the elastic body. At the same time, the elastic body is compressed, the needle wrapped inside the elastic body pierces the air bubble, and a hole is made in the air bubble. At this time, since an elastic body that is compressed so as to wrap the needle is provided around the needle, the air inside escapes from this hole, and the adhesive sheet presses the adhesive sheet onto the adherend. The Rukoto. After the degassing operation, the needle is wrapped in the elastic body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

[0010]

[Embodiment 1] FIGS. 1 and 2 show the outline of the entire structure of a crimping jig 1.

The elastic body used in the present invention is a material that is compressed and deformed by a pressing force and recovers its shape when the pressing force is released.

That is, the pressure-bonding jig 1 is configured to pressure-bond both the pressure-sensitive adhesive sheet 2 and the adherend 3 to which the pressure-sensitive adhesive sheet 2 is adhered while removing bubbles 4 generated from the adherend. In the jig, a disk-shaped substrate 14 is provided at the tip of the handle 13 of the jig body 10, and a plurality of needles 11 are vertically provided on one surface of the substrate 14.
The hair 12 is wrapped around the needles 11 so that the substrate 1
4 is densely planted in a brush shape.

The needle 11 is provided in the central portion of the substrate 14 from 2 to 2.
Multiple pieces are provided at intervals of 5 mm. The number of needles 11 is preferably 8 to 10. These needles have approximately the same length.

The bristles 12 are planted on the entire surface of the substrate 14 so as to wrap the needle 11. The length of the hair 12 is, for example, 20 mm when the length of the needle 11 is 17 to 18 mm.
Therefore, it must be surely longer than the length of the needle 11. Further, the bristles 12 must be elastic bodies having elasticity. Therefore, the type of the hair 12 is not particularly limited, such as synthetic resin and animal hair, but it is preferable to use synthetic resin having strong elasticity.

In the method of using the pressure-bonding jig 1 thus constructed, first, the hairs 12 are provided on the surface of the pressure-sensitive adhesive sheet 2 so as to cover the bubbles 4 generated between the pressure-sensitive adhesive sheet 2 and the adherend 3. Press. Then, the bristles 12 are pressed and the internal pressure of the bubbles 4 is increased. At the same time, the hair 12 is elastically deformed, the needle 11 wrapped inside the hair 12 pierces the bubble 4, and a hole is made in the bubble 4 (see FIG. 3B). Then, the elastic force of the bristles 12 acts so as to extract the internal air from this hole, and the air extracted by this acts as
It goes out through the gap between the bristles 12. At the same time, the bristles 12 press the adhesive sheet 2 onto the adherend 3.

[0016]

Second Embodiment This example is shown in FIGS.

That is, in this crimping jig 1, the bristles 12, which are the elastic body of the first embodiment, are formed by the foamed body 15 made of synthetic resin. Here, only the differences from the first embodiment will be described, and the other description will be omitted. The same members as those in the first embodiment are designated by the same reference numerals.

The foam 15 is attached to the entire surface of the substrate 14 so as to enclose the needle 11. The thickness of the foam 15 is preferably about 15 to 25 mm. However, it is preferable to set the thickness to about 3/2 of the length of the needle 11, and it must be surely made thicker than the length of the needle 11. If the thickness is 3/2 or less, the foam 15 cannot sufficiently compress the bubbles 4. If the thickness is 3/2 or more, it becomes difficult to make a hole in the bubble 4 by the needle 11 inside the foam 15. The type of the foam 15 is not particularly limited, but a foam such as polyurethane, polyethylene, or vinyl chloride, or a material having elasticity such as a rubber material can be used. However, the hardness of the foam 15 is JIS-K6.
It is preferable that the measured value of the C-type hardness meter (rubber, plastic) by the vulcanized rubber physical test method 301 is 10 to 35 °. Further, the foam body 15 is designed so that the air in the compressed bubbles 4 escapes to the outside through the foam body 15.
It is preferable to use open cells. Alternatively, it is preferable that the pressing surface of the foam 15 is provided with irregularities, or a woven fabric, a non-woven fabric, or the like is attached so that air can be easily extracted.

In the method of using the pressure-bonding jig 1 thus constructed, first, the foam 15 is applied to the surface of the pressure-sensitive adhesive sheet 2 so as to cover the air bubbles 4 generated between the pressure-sensitive adhesive sheet 2 and the adherend 3.
Press. Then, the foam 15 is compressed and the internal pressure of the bubbles 4 is increased. At the same time, the foam 15 is elastically deformed, the needle 11 wrapped inside the foam 15 pierces the bubble 4, and a hole is made in the bubble 4. Then, the foam 1
The elastic force of 5 acts, and the air extracted by this flows out through the foamed bubbles in the foam 15. At the same time, the pressure-sensitive adhesive sheet 2 is pressed onto the adherend 3 by the foam 15.

[0020]

As described above, according to the present invention, it is possible to make a hole in the pressure-sensitive adhesive sheet that forms air bubbles, and remove the internal air from the hole, and at the same time, pressure-bond the pressure-sensitive adhesive sheet to the adherend. Bubbles generated between the adhesive sheet and the adherend can be easily removed.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing the outline of the overall configuration of a crimping jig according to a first embodiment.

FIG. 2 is a front view showing a crimping surface of the crimping jig according to the first embodiment.

FIG. 3 is an explanatory diagram showing a method of using the crimping jig according to the first embodiment.

FIG. 4 is a partial cross-sectional view showing an outline of a main part configuration of a crimping jig according to a second embodiment.

FIG. 5 is an explanatory diagram showing a method of using the crimping jig according to the second embodiment.

[Explanation of symbols]

1 Crimping jig 10 Jig body 11 needles 12 hairs (elastic body) 14 board 15 Foam (elastic body) 2 Adhesive sheet 3 Adherend 4 bubbles

Claims (2)

[Claims] 1. A jig for press-bonding an adhesive sheet and an adherend to which the adhesive sheet is adhered while removing air bubbles generated from the adherend, wherein a plurality of jigs are provided on a substrate of the jig body. The above-mentioned needle is hung vertically with its tip outside, and an elastic body having a thickness larger than the length of these needles is provided so as to wrap the needles. 2. An elastic body is pressed from above bubbles formed between a pressure-sensitive adhesive sheet and an adherend on which the pressure-sensitive adhesive sheet is adhered, and the elastic body is compressed to increase the internal pressure of the bubbles. A method for sticking an adhesive sheet, in which air bubbles are broken from the inside of the elastic body with a needle and air in the air bubbles is extracted and pasted.