JPH0469167A - Engraving method for character and the like by sandblast - Google Patents

Abstract

PURPOSE:To increase the efficiency of the whole engraving work by providing an adhesive layer on the back face of a masking sheet main body, temporarily sticking a separator to the adhesive layer, cutting the cut line of the profile of a character, etc., on the masking sheet main body and white-coloring the cut line by the irregular reflection based on the exposure of the power added to the masking sheet main body. CONSTITUTION:An adhesive layer 2 is provided on the back face of a masking sheet main body 1, a separator 3 is temporarily sticked to this adhesive layer 2 and the cut line of the profile of a character, etc., is cut on the masking sheet main body 1. This cut line is then made in a white color by the irregular reflection based on the exposure of the powder added to the masking sheet main body 1. Thereafter, the masking sheet main body 1 is sticked by the adhesive layer 2 onto the face to be engraved, then, the part of a character, etc., is removed by the excision of the cut line, thereafter, a character, etc., is engraved with sand blasting.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for engraving characters, etc. on the surface of a stone or the like by sandblasting.

(Prior art) When engraving letters, pictures, etc. on stone, glass plates, metal plates, etc. by sandblasting, conventionally, a masking sheet with an adhesive layer on the back side is pasted to the surface to be engraved, such as stone, etc. The pasted masking sheet is pasted on a surface to be carved such as stone, characters, etc. are cut out using a cutter or the like on the pasted masking sheet, and then sandblasting is performed, and the surface to be carved exposed by the cut-out is engraved. are doing.

(Problem to be Solved) However, this method has no choice but to rely on handwriting to draw characters, etc., which requires skill and is disadvantageous in terms of work efficiency.

Recently, plotters that display the results of computer calculations and analysis on paper as characters and figures have been used in many fields, and if this plotter could be used to draw characters on the masking sheet, automation would be possible. This is advantageous in terms of work efficiency. Furthermore, if the incision process of a single character etc. can be done virtually in a factory, it will be possible to automate the incision process of the above-mentioned characters.
Work efficiency can be further improved.

An object of the present invention is to improve the overall efficiency of the sandblasting engraving work by making it possible to draw characters, etc. on the masking sheet and actually cut out the characters, etc. in a factory. It's about trying.

(Means for Solving the Problems) A method for engraving characters, etc. by sandblasting according to the present invention includes providing an adhesive layer on the back side of a masking sheet body, temporarily attaching a separator to the adhesive layer, and then attaching a separator to the masking sheet body.
A cut is made in the outline of the characters, etc., and the cut is whitened by diffused reflection due to exposure of the powder added to the masking sheet body.Furthermore, the masking sheet body is adhered to the surface to be engraved with an adhesive layer, and then the characters, etc. The structure is characterized in that the portion is removed by cutting the cut, and then sandblasted.

(Explanation of Examples) Embodiments of the present invention will be described below with reference to the drawings.

The drawing shows a masking sheet used in the present invention.

In the figure, 1 is the main body of the masking sheet, and the upper layer 1
1, and a lower layer M12 which is thicker than the upper layer 11. These upper layer 11 and lower layer 12 are made of a composition in which styrene-butadiene rubber, nitrile rubber, natural rubber, etc. are blended with fillers such as talc, clay, calcium carbonate, a softening agent, a vulcanizing agent, and further, if necessary. In particular, in the upper layer 11, calcium carbonate is added in an amount of 50 to 100 parts by weight per 100 parts by weight of the rubber so as to whiten the cut edges described below.
It is blended in a large amount of 500 parts by weight.

In the figure, 2 is an adhesive layer provided on the back side of the masking sheet body, and 3 is a separator temporarily attached to this adhesive layer.

In order to engrave characters, etc. on the surface of a stone or the like according to the present invention, first, in a factory, a plotter with a blade is used to make cuts on the main body 1 of the masking sheet along the outline of the characters, etc. to be engraved. I'm going to put it in. That is, the characters to be engraved are stored in a computer, a masking sheet is set on a plotter, a blade is attached to a pen of the plotter, and the computer moves the pen along the outline of the characters. In this case, it is desirable to make the depth of the cut along the outline of the characters etc. shallower than the thickness of the masking sheet body, and to leave the bottom of the cut in a continuous state. The thickness of the continuous portion varies depending on the thickness and material of the masking sheet body, but it is usually preferably 5 to 70 μm.

When cuts are made in the main body of the masking sheet, the calcium carbonate powder mixed in a large amount is exposed at the cuts, causing diffused reflection and turning the cuts white.

Once the masking sheet has been cut with characters, etc. in the factory, it is transported to the engraving site, the separator is peeled off, and the main body of the masking sheet is adhered to the surface to be engraved, such as stone, glass plate, metal plate, etc., using an adhesive layer.

When peeling off this separator, if the seabird parts shaped like letters remain connected to the main body of the masking sheet,
The masking sheet main body can be attached to the surface to be engraved while having the seabird portion integrally.

After the masking sheet main body is attached to the surface to be engraved, the cut in the outline of the characters, etc. is opened and the characters, etc. are removed from the masking sheet main body. In this case, if the shape of the letters etc. is complicated, the shape of the seabird part of the letter etc. will also be complicated, but since this seabird part can be clearly recognized by the whitening of the cut section described above, it is possible to remove the seabird part by mistake. This can definitely be ruled out.

It can be removed cleanly without destroying the shape of letters, etc.

In the above, the masking sheet main body is made into a single layer, and the composition is such that it can be whitened at the cut end, that is, the rubber content is 100.
The whole may be molded by mixing 50 to 500 parts by weight of calcium carbonate.

Furthermore, broken lines such as perforations may be inserted along the contours of characters etc. instead of breaks. Furthermore, the masking sheet main body can also be made of plastic.

In the present invention, the particles of Sand Plus 1 and the injection pressure may be selected depending on the hardness of the surface to be carved, etc., and a Thomson blade may also be used for making the cuts.

(Effects of the Invention) The method for engraving characters, etc. by sandblasting according to the present invention has the configuration as described above, and the surface to be engraved is sandblasted through the cut-out holes of a masking sheet in which characters, etc. are cut out to engrave the characters, etc. In this case, the characters can be drawn on the masking sheet and cut along the outline of the characters can be done at the factory, and in order to whiten the cuts,
After attaching the masking sheet body to the surface to be engraved, letters etc. can be removed without cutting off the excess parts.
This can be done neatly without destroying the shape of letters, etc. Therefore, according to the present invention, all masking sheet processing and processing can be performed in the factory without any effect on the quality of the engraving, and by automating this processing, the efficiency of the entire work can be improved. .

[Brief explanation of drawings]

The drawing is an explanatory diagram showing a masking sheet used in the present invention. DESCRIPTION OF SYMBOLS 1...Masking sheet main body, 11...Upper layer whose cut end becomes white, 2...Adhesive layer, 3...Separator.

Claims (4)

[Claims] (1) An adhesive layer is provided on the back side of the masking sheet body, a separator is temporarily attached to the adhesive layer, a cut is made in the outline of characters, etc. on the masking sheet body, and the powder added to the masking sheet body is exposed through the cut. The masking sheet is whitened by diffused reflection based on the engraved surface, the main body of the masking sheet is adhered to the surface to be engraved using an adhesive layer, the parts such as letters are removed by cutting the above-mentioned cuts, and then sandblasting is carried out. A method of engraving letters, etc. by sandblasting. (2) A method for engraving characters, etc. by sandblasting according to claim (1), characterized in that the cuts are made at a depth reaching a position of 5 to 70 μm from the back surface of the masking sheet main body. (3) The method for engraving letters, etc. by sandblasting according to claim (1), characterized in that broken lines are used instead of cuts. (4) Sandblasting according to claims (2) to (3), characterized in that the masking sheet main body is a laminate of an upper layer and a lower layer thicker than the upper layer, and a powder for whitening the cut edges is added to the upper layer. A method of engraving characters, etc.