JPS6018316B2 - Stencil for attaching to base material for patterning by sandblasting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel stencil useful for sandblasting texturing.

Molded products made of various materials (hereinafter referred to as base materials)
The method of etching and patterning the surface by sandblasting is widely used for various purposes including decoration. This method is carried out by attaching a cut-out pattern (hereinafter referred to as a stencil) made of a material that is not easily eroded by sandblasting to the base material, or by applying sandblasting to the base material.

When attaching a stencil to a base material, there are two methods for forming the cut-out pattern: one method involves shaping the stencil before pasting it on the base material, and the other method involves molding it after pasting it onto the base material.

If a stencil is to be attached to the base material, a stencil with a punched pattern formed in advance will of course be used.

However, all of these methods have advantages and disadvantages. In other words, the method of pasting the stencil material on the base material and then forming the cutout pattern is difficult to do when the stencil material has a complicated shape (for example, one with a curved surface). When it is necessary to pattern a base material, the problem is that the cutout pattern must be formed on each base material one by one, resulting in extremely poor workability. On the other hand, forming a punched pattern on a stencil material and then pasting it on the base plate is a good method that solves these problems, but it becomes a problem when the pattern has island-like parts.

In other words, if the island-like part is left as it is, it will be lost.
So-called "hanging" becomes necessary. This is a problem because the more complex and fine the pattern, the more time and effort is required, leading to an increase in cost. Furthermore, in the case of the method of closely adhering Stesosil to the base material, it is suitable for a large amount of patterning, but as above, it becomes a problem when there is a pattern of island-like parts.

That is, since the stencils are not pasted together, so-called "hanging" cannot be done, and the pattern is limited to patterns that have no island-like parts, so it cannot be used for a wide range of purposes. In view of the above problems, it is possible to easily create patterns with island-like parts,
As a result of intensive research into a method that can be used to pattern a large amount of substrates with good workability, and also to pattern substrates with complex shapes, we have developed a method that allows the patterning to be easily removed by sandblasting. We have found that it is extremely useful to use a new type of stencil that is pasted onto gauze, cloth, or mat, or in which part or all of the gauze, cloth, or mat is interposed in the cutout pattern, and we have come up with the idea. .

That is, the present invention provides a base for patterning by sandblasting, in which a plate-shaped punched pattern made of a material that is difficult to be eroded by sandblasting is bonded to gauze, cloth, or mat made of fibers that are easily eroded and removed by sandblasting. This relates to a stencil for pasting materials.

Next, details of the present invention will be specifically explained.

First, the plate-shaped punched pattern is made of a material that is not easily eroded by sandblasting. Such materials include natural or synthetic resins, rubber, paper, metal plates, and the like.

The thickness is selected depending on the type of base material and the depth of erosion, but a range of 0.01 to 5 degrees is practical. Various methods can be used to form cutout patterns using flat plates made of these materials. Examples include hand carving, mechanical carving, chemical etching, and methods using photocurable resin. The stencil of the present invention is one in which such a flat cutout pattern is bonded to a gauze, cloth, or mat made of fibers that can be easily eroded and removed by sandblasting.

Examples of such fibers include glass fibers and rock wool fibers. Furthermore, the term "combined arrangement" as used herein refers to a state in which the cutout pattern and the gauze, cloth, or mat are pasted together, or a state in which part or all of the gauze, cloth, or mat is interposed in the cutout pattern. The gauze, cloth, or mat may be attached or interposed by various methods such as bonding with an adhesive, press molding, and embedding.

In this way, by bonding and arranging the pattern cut out on a flat plate to the gauze, cloth, or mat made of fibers that can be easily eroded and removed by sandblasting, even if the pattern has island-like parts, this can be bonded to the gauze, cloth, or mat described above. Since it is made of a metal material, it will not be missing and does not require any measures such as "hanging".

Patterning on a base material using the thus obtained stencil is carried out as follows.

First, the stencil is pasted onto the base material at a predetermined location. In this case, use adhesive if necessary. Further, when the shape is complicated, for example, it has a curved surface, it is pasted so as to fit along the curvature. Then sandblast this. The sandblasting conditions are selected so that the gauze, cloth, or mat described above is completely removed and the base material in that area is eroded to the desired depth, but the standard conditions are 30 to 500.
Mesh carborundum or alundum 1-8k9/
It is performed by blowing air with the pressure of the earth from a distance of 1 to 5 melons.

After sandblasting.

By peeling and removing the stencil, a base material with a desired pattern can be obtained. The stencil of the present invention can be made by combining cutout patterns made of various materials with the gauze, cloth, or mat described above. Those made of glass fiber are particularly convenient and have excellent workability.

The photocurable resin in this case may be either solid or liquid. The former includes cellulose, nylon, and P.
Examples of the latter include unsaturated polyether, unsaturated urethane, and epoxy (meth)acrylate.

The feature of the stencil of the present invention is that even if there is a pattern with the first island-shaped part, it can be formed by the same operation as without it, and the work can be done efficiently without the need for troublesome operations such as "trimming". .

Therefore, any pattern, including complex and fine patterns, can be freely selected, and a wide range of applications are possible. Second, since the stencil of the present invention is of a type in which the punched pattern is pasted after molding, it can be produced in bulk, and the stencil can be pasted onto a base material in bulk and sandblasted, improving work efficiency.

Therefore, mass production is also possible. Third, since the cut-out pattern is preformed, all that is required is pasting, and it can be applied to substrates with complex shapes. Taking advantage of the above characteristics, the stencil of the present invention can be applied to metals such as aluminum and iron, polymethyl methacrylate, polystyrene, polyvinyl chloride, synthetic resins such as phenol resin and urea resin, glass, stone, ceramics, wood, etc. It is widely used for patterning molded products by sandblasting.

Next, the present invention will be explained in detail by way of examples, but of course it is not limited to these examples.

Example An unsaturated polyester with an acid value of 23 obtained by condensation reaction of maleic anhydride/notriethylene glycol isophthalate at a molar ratio of 2/1/3 7 parts, 3 parts of 2-hydroxyethyl methacrylate, A liquid photocurable resin composition was obtained by mixing and dissolving 1 part of benzene isobutyl ether and 0.1 part of 2,6-di-f-butyl-p-cresol.

Thickness 1.5 mm on a glass plate. Paste the above polyester film, place 0.15 willow basers on both ends, pour the resin solution mentioned above, and add glass fiber mat (manufactured by Nippon Glass Fiber ■, Micro Glass Surf Ace Mat,
A polypropylene film having a thickness of 0.08 cm was placed on top of the film, and a polypropylene film with a thickness of 20 cm was placed over it, and a metal roller was moved from above while pressing it along the baser to obtain a resin laminate. On top of this, a positive film with a floral pattern having islands of about 3 square meters and a glass plate with a thickness of 2 skins were layered and adhered in this order. Then, from above, turn on an ultraviolet fluorescent lamp (
20W) was irradiated with inkstone sand for 3 minutes.

Claims (1)

[Claims] 1. A stencil for attaching to a base material for patterning by sandblasting, in which a plate-shaped punched pattern made of a material that is difficult to be eroded by sandblasting is bonded to gauze, cloth, or pine made of fibers that are easily eroded and removed by sandblasting.