JPH0220197Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is an adhesive sheet used when carving a pattern on the surface of a glass plate by physical treatment such as sandblasting or chemical treatment with hydrofluoric acid. Regarding.

(Prior Art) A method shown in FIG. 3 has conventionally been used to form a predetermined pattern on the surface of a glass plate by sandblasting or etching with hydrofluoric acid.

That is, the tape 30 is pasted without any gaps on the surface of the glass plate G where the pattern is to be formed, and then the part 31 where the pattern is to be formed is cut out and the other part is covered with a mask 32.
In this state, a pattern 33 having a shape corresponding to the portion 31 is engraved on the surface of the glass plate G by sandblasting or by spraying an etching solution mainly composed of hydrofluoric acid.

(Problems to be Solved by the Invention) In the case of using the above-mentioned conventional means, the tape 30 must be manually cut into the desired pattern shape, which takes a lot of man-hours and effort, and in some cases, There is also a risk of damaging the surface of the glass plate G.

On the other hand, when pasting letters, etc. on the body of a car, etc., a release paper is pasted on one side of the adhesive sheet and a base sheet is pasted on the other side, and cuts are made in the adhesive sheet and the release paper to match the letters, etc. There is also an adhesive sheet in which only the release paper on the text part is removed, and the entire sheet is pressed against the body etc., leaving only the part where the release paper was peeled off as the text. , sandblasting or hydrofluoric acid treatment, there are the following problems.

That is, since the above-mentioned adhesive sheet is made up of an adhesive sheet, a base sheet, and a release paper in advance, the base sheet may be cut at the same time when making cuts in the adhesive sheet and release paper. . Furthermore, since the thickness of the adhesive sheet is not appropriate, there is also the problem that sandblasting or hydrofluoric acid treatment is applied to areas other than the intended areas, or conversely, the intended areas are not sufficiently treated.

(Means for Solving the Problems) In order to solve the above problems, the adhesive sheet according to the present invention has a three-layer structure by laminating a release sheet on one side of the pattern sheet and a curing sheet on the other side.
The two-layer body consisting of the pattern sheet and the release sheet is cut in advance according to the desired pattern shape, and the pattern sheet is made of vinyl chloride or polyester and has a thickness of 30 mm. ~100μ.

(Example) An example of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a sectional view showing the process of creating an adhesive sheet according to the present invention.
As shown in Figure A, adhesive is applied to both sides of a pattern sheet 2 made of vinyl chloride or polyester with a thickness of 30 to 100μ, and a release sheet made of paper or the like with a thickness of 50 to 150μ is placed on one side of the pattern sheet 2. 3 are pasted together to create a two-layer body 4. Next, incisions 5 are made in this two-layer body 4 in accordance with the desired pattern shape.

After this, as shown in FIG.
A curing sheet 6 made of polyethylene or paper with a thickness of ~100 μm is pasted to form an adhesive sheet 1 so as not to lose its shape.

The procedure for carving a pattern of a predetermined shape on the surface of a glass plate by sandblasting or hydrofluoric acid treatment using the adhesive sheet 1 having the above-mentioned structure will be explained with reference to FIG.

First, as shown in FIG. 2A, of the release sheet 3 of the adhesive sheet 1, the part 3a on which the pattern is engraved is left, and the part 3b on which the pattern is not engraved is peeled off. The pattern sheet 2 is exposed.

Next, as shown in FIG. 2B, the exposed portion 2b of the pattern sheet 2 is pressed against the surface of the glass plate G to bond the adhesive sheet 1 to the surface of the glass plate G. Thereafter, the curing sheet 6 is peeled off as shown in FIG. 2C. Then, the exposed part 2 of the pattern sheet 2
b remains stuck on the surface of the glass plate G, parts 2a and 3a of the pattern sheet 2 and release sheet 3 on which the pattern is engraved are peeled off together with the curing sheet 6, and the pattern sheet remaining on the surface of the glass plate G Since the end of the portion 2b is turned up, this portion is pressed against the surface of the glass plate G to form the state shown in FIG. 2D.

Thereafter, the surface of the glass plate G is sandblasted or treated with hydrofluoric acid to form a pattern by engraving the portion where part 2b of the pattern sheet remains. Thereafter, the remaining pattern sheet 2b is peeled off from the surface of the glass plate G to obtain the desired glass plate.

Here, since the pattern sheet 2 serves as a mask when sandblasting or hydrofluoric acid treatment is applied, if it is not immersed in the hydrofluoric acid and is too thin, the pattern will be removed by sandblasting and the pattern will be lost. The thickness of the pattern sheet should be 30 to 100μ, as the pattern will protrude beyond the areas where it should be formed, and if it is too thick, sandblasting and other treatments will not be carried out properly at the border of the pattern. Particularly good results were obtained when the thickness was 50 to 75μ.

(Effect of the invention) As explained above, according to the adhesive sheet of the present invention, a pattern can be formed before the adhesive sheet is attached to a glass plate, so a pattern sheet such as an endless roll can be used. It is also possible to mechanically make incisions in accordance with the pattern, making it possible to perform sandblasting or hydrofluoric acid treatment at low cost and easily.

Furthermore, by setting the thickness of the pattern sheet constituting the adhesive sheet to 30 to 100 μm, the border is clear and the pattern can be reliably formed only in the area where the pattern is to be formed.

[Brief explanation of the drawing]

Figures 1A and B are cross-sectional views showing the manufacturing process of the adhesive sheet according to the present invention, and Figures 2A to D show the procedure for carving a pattern on a glass plate using the adhesive sheet according to the present invention. FIG. 3 is a perspective view showing a conventional method. In the drawings, 1 is an adhesive sheet, 2 is a pattern sheet, 3 is a release sheet, 4 is a two-layer body, 5 is a notch,
6 is a curing sheet, and G is a glass plate.

Claims (1)

[Scope of utility model registration request] A release sheet is pasted on one side of a patterned sheet made of vinyl chloride or polyester with adhesive coated on both sides and is 30 to 100 μm thick to form a two-layer structure. This adhesive sheet is made by making incisions in a double-layered patterned sheet and pasting a curing sheet on the other side of the two-layer patterned sheet with the incisions.