JPH032631B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is a transfer method for sandblasting used when pasting onto a workpiece surface such as ceramics or glass and blasting sand to form a predetermined pattern on the workpiece surface corresponding to the pasting pattern. It's about paper.

Generally, in order to process a grinding pattern on the surface of ceramics or the like by sandblasting, a protective film is used in which the pattern is cut out to expose the sandblasted surface. This protective film can be a rubber stencil with a design cut out, a film with a pattern formed using photosensitive resin, or a film printed directly onto the workpiece, but stencils require a lot of labor to produce. However, it is difficult to produce hollow patterns, and the designs are limited. Films using photosensitive resin are expensive because they use special resin, and in types that print directly on the workpiece, it is difficult to produce. Each of these methods has drawbacks, such as difficulty in printing due to the shape of the workpiece.

On the other hand, Utility Model Application No. 55-87555 and Utility Model Application No. 87555
No. 55-89557 has a pressure-adhesive or heat-melting (peelable) intermediate synthetic resin layer that is releasable to the base film on a releasable base film, and a pattern is formed on it using a photosensitive resin. This is used as a transfer paper, and the base film is transferred onto the surface of the workpiece by pressing or heat-pressing, and after the base film is peeled off and removed, sandblasting is performed. However, this transfer paper has disadvantages in that it uses an expensive photosensitive resin, that wrinkles occur when the adhesive surface is attached and pressed onto the surface of the workpiece, and that heating is required.

In addition, in Japanese Patent Publication No. 55-4549, a protective pattern is printed on a mount using heat-foaming ink, heated and foamed, and a protective layer is formed on top of the foam layer. Although a transfer paper coated with a protective coating is disclosed, this transfer paper is subjected to blasting after the protective coating is peeled off.
Peeling tends to be incomplete, and the protective pattern of the foam layer must be carefully peeled off at the time of coating peeling, making it difficult to carry out.

Furthermore, Japanese Patent Publication No. 54-34365 discloses a transfer paper in which a colored pattern is printed on a mount, and a removable resin film, a pattern protection film made of corrosion-resistant and abrasion-resistant ink, and a removable protective coat are formed on the printed paper in order. is disclosed. This transfer paper also has the disadvantage that it is difficult to remove the protective coating because it is blasted after removing the outermost protective coating, and if peeling is insufficient, a good pattern cannot be obtained on the processed surface. There is.

SUMMARY OF THE INVENTION The present invention is therefore an attempt to solve the above-mentioned drawbacks of conventional transfer paper. That is,
An object of the present invention is to provide a transfer paper for sandblasting that is capable of accurately transferring not only a continuous pattern in which patterns are connected, but also a linear pattern or a hollow pattern in which the patterns are separated onto the workpiece surface. There is a particular thing. Another object of the present invention is to provide a transfer paper for sandblasting, in which the portion covered with the pattern layer is prevented from being scratched by sandblasting, and the outer periphery of the pattern layer can be sufficiently ground to obtain a clear pattern. It is in.

Another object of the present invention is to provide a sandblasting product that is easy to work with without the need to peel off the surface layer after being pasted on the surface to be processed, and that eliminates the conventional inconveniences that occur when peeling off the surface layer after pasting. Our purpose is to provide transfer paper for

In the present invention, a paste layer is provided on a transfer paper mount (hereinafter simply referred to as mount), an adhesive layer is provided on the paste layer, and a pattern layer is provided on the adhesive layer. Basically, it is formed of four layers. The mount is preferably made of a material that is highly absorbent and has high water resistance, such as Japanese paper or synthetic paper.
A slide transfer paper mount used for slide transfer of designs on ceramics is preferable. The glue layer is a rewetting material that dissolves in an aqueous solvent, preferably water, and is prepared by applying an aqueous glue solution such as a dextrin solution, starch solution, or synthetic resin emulsion solution to a predetermined side of the mount and drying it. It is formed. The aqueous glue solution is applied in an amount such that the glue layer has a thickness of about 2 to 3 microns. The glue layer bonds the backing paper and the adhesive layer when dry, but when the backing paper gets wet, the glue layer dissolves in water and allows the backing paper to be peeled off from the adhesive layer surface without losing its adhesive strength. The adhesive layer is used to adhere and fix the pattern layer stacked thereon, and is particularly effective in fixing details, linear parts, and separated parts of the pattern layer, so that it is possible to form a predetermined pattern on the surface to be processed by sandblasting. It can be precisely reproduced. In addition, the adhesive layer does not need to have permanent adhesive strength to the surface to be machined, but it needs to have enough adhesive strength to withstand blasting, and it must have abrasion resistance against sand blasting. It must be small and not subject to abrasion loss due to sandblasting. This adhesive layer is made by adding approximately 20 to 80% by weight of resin in an organic solvent (hereinafter referred to as
It is simply abbreviated as %. ) Containing composition liquid approximately 10 to 100
% and about 90 to 0% filler is applied onto the paste layer and dried. Note that the adhesive layer has a thickness of about 2 to 50 μm. Examples of resins used as the resin component include acrylic types such as polymethyl acrylate and polyethyl acrylate, cellulose types such as ethyl cellulose and acetyl cellulose, vinyl types such as vinyl chloride and vinyl acetate, rosin types such as oxidized rosin and gum rosin, and styrene-butadiene. , rubber-based resins such as butadiene, alkyd resins, polyamide resins, butyral resins, phenolic resins, and the like are suitable.
The organic solvent used is a linear type, an aromatic type, an ester type, an alcohol type, or the like. The filler is carbon,
Talc, bentonite, calcium carbonate, silica,
Zirconium silicate, Bengara, sericite,
Fine inorganic powder such as mica, or urethane,
Organic fine powders such as ethyl cellulose, methyl cellulose, polyvinyl alcohol, and acrylic are suitable.

The adhesive layer formed from the above composition liquid is soft, has low abrasion resistance, and is abraded by sandblasting.

The pattern layer has high abrasion resistance against sandblasting, and the part of the workpiece surface covered with this pattern layer is not scratched by sand.
It can be left as the original surface of the processed surface. The pattern layer is mainly composed of a rubber-based resin, and contains a rubber composition liquid containing about 30% or more of a rubber component in the organic solvent, about 50 to 100%, and about 50 to 0% of the filler described above. The adhesive layer is formed by applying the rubber composition liquid onto the adhesive layer by screen printing. The pattern layer is approximately 10 to 100 microns thick.
The rubber components used include styrene-butadiene rubber, nitrile rubber, acrylic rubber, and chlorinated rubber. The transfer paper of the present invention can be applied to surfaces to be processed such as ceramics, glass, metals, or plastics.

However, the adhesive layer of the lever transfer paper dissolves when the mount is wetted with water, so the mount is peeled off, the adhesive layer of the pattern layer bonded to the adhesive layer is adhered to the surface to be treated, and then the sand particles are removed. The shape of the pattern layer can be reproduced on the processed surface by spraying sand such as . In other words, the sand blasted against the transfer paper adhered to the surface to be processed is repelled by the abrasion-resistant pattern layer, and the sand blasts onto the adhesive layer around the pattern layer or at an independent adhesive layer site. The adhesive layer is worn away and the surface to be treated is shaved into a concave shape. Since the pattern layer is sufficiently adhered and held to the surface to be processed by the adhesive layer, it will not be peeled off by sandblasting, and the details and line portions of the pattern layer are sufficiently adhered and held to the surface to be processed through the adhesive layer.
By peeling off the pattern layer together with the adhesive layer, a clear transferred pattern in which the shape of the pattern layer is reproduced can be obtained on the processed surface.

Further, in the above-described transfer paper of the present invention, an impact-reducing layer for mitigating the impact caused by sandblasting can be interposed between the adhesive layer and the pattern layer.
The thickness of this impact mitigation layer is about 5 to 100 microns. That is, as mentioned above, a paste layer is placed on the mount,
In a transfer paper with a structure provided with an adhesive layer and a pattern layer, if the sand particles are large or the blast intensity is high, the pattern layer will be dented by the sand that hits the pattern layer, and the surface of the area covered by the pattern layer will be damaged. It is necessary to control the sand particles and the blasting strength to avoid scratches on the pattern layer, but when an impact-reducing layer is provided, the impact of the sand hitting the pattern layer is reduced by the impact-reducing layer below the pattern layer. This prevents scratches from occurring in areas under the pattern layer. Furthermore, since the transfer paper provided with the shock-reducing layer can withstand strong sandblasting, the outer periphery of the pattern can be deeply scraped, resulting in a clear transferred pattern. This impact mitigation layer must have low abrasion resistance against sandblasting, be flexible, and have high adhesion to the lower adhesive layer and the upper pattern layer. An impact mitigation layer that satisfies this condition can be made by adding a filler to the composition solution for forming the adhesive layer described above, or by adding a filler to the composition solution for forming the pattern layer to reduce the abrasion resistance against sandblasting. is used. That is, 20 parts of polybutyl methacrylate,
50 parts of butyl lactate, 30 parts of zirconium silicate,
or ethylcellulose
15 parts, butyl lactate, 60 parts, and talc, 25 parts, or styrene-butadiene rubber.
10 parts, aromatic petroleum solvent 30 parts, zirconium silicate
A formulation consisting of 60 parts is applicable.

Further, the above-mentioned transfer paper of the present invention, that is, (a) a transfer paper having a structure in which a paste layer, an adhesive layer, and a pattern layer are provided on a mount, and (b) a paste layer, an adhesive layer, and an impact-reducing layer on the mount A coating layer is provided on each pattern layer and exposed adhesive layer of a transfer paper with a structure provided with layers and pattern layers, or on the exposed shock absorbing layer, so that it does not rub against the pattern layer during handling and transfer before transfer. Alternatively, surface flaws such as impact can be prevented from occurring.
This coating layer has low abrasion resistance against sand blasting and high flexibility so as not to interfere with bending of the transfer paper. Suitable materials for the coating layer include polymethyl acrylate, polybutyl methacrylate, other acrylic resins, ethyl cellulose, nitrocellulose and other cellulose derivative resins, butyral resins, and vinyl resins such as vinyl chloride. The appropriate thickness of this coating layer is 3 to 30 microns. And the coating layer is, for example, ethyl cellulose 15
80 parts of butyl lactate and 5 parts of DOP (dioctyl phthalate), or 30 parts of polybutyl methacrylate and 70 parts of an aromatic petroleum solvent.

Note that the thickness of each layer in the present invention is not limited to the above-mentioned layer thickness, and can be changed depending on the application and blasting conditions. The layers can be freely adjusted within a range that provides the above-mentioned predetermined properties.

Therefore, the present invention provides the following method:
A rewettable glue layer that dissolves in water is provided,
The glue layer has adhesive strength to the surface to be processed,
An adhesive layer having low abrasion resistance against the sand to be blasted is provided, and a pattern partially adhered to the adhesive layer to form a predetermined pattern shape and having high abrasion resistance against the sand is provided on the adhesive layer. Because it is a transfer paper with layers, continuous patterns, linear patterns,
Alternatively, precise transfer is possible even in hollow patterns, and since the adhesive layer has low abrasion resistance, the exposed portion is worn out during sandblasting, which is convenient because there is no problem in grinding the portion. In the present invention, when an impact relaxation layer with low abrasion resistance is provided between the pattern layer and the adhesive layer, the surface to be processed covered with the pattern layer is prevented from being scratched by sandblasting, and the outer periphery of the pattern layer is prevented from being scratched. Since the grinding can be done sufficiently, a clear pattern can be obtained on the processed surface.

In addition, in the present invention, when a coating layer with low abrasion resistance against sand is provided on the pattern layer, the pattern layer can be protected when handling the transfer paper, and the pattern layer can be maintained clearly without being damaged. Convenient for transcription.

Next, embodiments of the present invention will be described with reference to the drawings.

Example 1 In FIGS. 1 to 5, numeral 1 is a mount made of china paper with a thickness of 0.16 mm, and numeral 2 is a glue layer with a thickness of 3 μm which is coated and dried on the entire upper surface of the mount 1.
The glue layer 2 of this example was formed by applying a dextrin solution of about 50% and drying it. 3 is an adhesive layer with a thickness of 40μ provided on the glue layer 2, and an acrylic solution of 30μ
Part by weight (hereinafter simply abbreviated as part) and 70 parts of zirconium silicate fine powder (filler) were mixed ink and printed on the entire surface of the glue layer 2 using a 120 mesh stainless steel screen printing plate. It is formed by 4 is a 30 μm thick pattern layer screen printed on the adhesive layer 3. The pattern layer 4 is made by combining 30 parts of Solprene (manufactured by Asahi Kasei Kogyo KK, trade name), which is a styrene-butadiene-based synthetic rubber, and 30 parts of talc powder of 200 mesh through Solbetsuso #150 (Etsuo Chemical Co., Ltd.).
It is formed by printing a predetermined pattern on the adhesive layer 3 using a 120-mesh stainless steel screen printing plate with an ink prepared by dissolving and mixing 40 parts of an aromatic high-boiling solvent (product name) manufactured by KK. The pattern layer 4 is formed with abrasion resistance against sandblasting.

The thus obtained transfer paper 5 causes the mount 1 to absorb water, dissolve the dextrin glue layer 2, and peel the mount 1 from the adhesive layer 3 (see FIG. 2). Next, the transfer paper 5A from which the mount 1 has been removed is applied with water to the ceramic surface 6 with the pattern layer 4 facing upward (see FIG. 3). After that, exposed surfaces 3A to 3A of pattern layer 4 and adhesive layer 3
Blast with sand (Sand is made by Showa Denko)
Uses Morundum #220 manufactured by KK, spraying distance 10
cm, blasting time 10 seconds, blasting pressure 4Kg/cm ³ ).

Since the pattern layer 4 has high abrasion resistance against sand blasting, the ceramic surface 6 below the pattern layer 4 is protected. Further, the adhesive layer 3 under the pattern layer 4 is convenient because it facilitates fixation of the pattern layer 4. On the other hand, adhesive layer 3
Since the exposed surfaces 3A to 3A have low abrasion resistance, they are abraded and lost in about 1 to 2 seconds by sand blasting, and the lower ceramic surface 6 is abraded (see FIG. 4). Then stop sandblasting and transfer paper 5A.
By removing the pattern layer 4 on the ceramic surface 6
A transferred pattern 7 is obtained, which includes a portion covered by and not worn away and a concave portion 6A having a shape corresponding to the exposed surface 3A of the adhesive layer 3 (see FIG. 5).

In addition, in the transfer paper 5 of this example, 0.5 of the pattern layer 4
The maximum pressure that the mm line can reproduce on the ceramic surface 6 is 6Kg/
^cm3 , the maximum pressure at which no scratches occur on the 6 parts of the ceramic surface under the pattern layer 4 during blasting is 6Kg/ ^cm3 , and the time required for the pattern layer 4 to be coated at a blasting pressure of 6Kg/ ^cm3 . It was hot in 60 seconds. Therefore, the transfer paper 5 of Example 1 has good pattern reproducibility.

Example 2 In FIGS. 6 to 9, 11 is a mount, and 12 is a paste layer formed on the mount 11, both of which are formed in the same manner as in Example 1. 13 is an adhesive layer formed on the entire surface of the glue layer 12. The adhesive layer 13 has a thickness of 3 μm and is obtained by coating and drying a mixture of 50 parts of a solution of 20 parts of ethyl cellulose and 80 parts of butyl lactate and 50 parts of an acrylic resin solution. Reference numeral 14 is a shock-reducing layer screen-printed on the entire surface of the adhesive layer 13, which is made of 35 parts of a solution consisting of 20 parts of ethyl cellulose and 80 parts of butyl lactate, and an acrylic resin.
It is a 50μ thick product made by coating and drying a mixture of 35 parts of talc and 30 parts of fine talc powder to give it a thick taste. 15 is a pattern layer having abrasion resistance against sand blasting, and is a pattern layer 15
4 is partially printed in a predetermined pattern. This pattern layer 15 is made of a 20% solvent solution of chlorinated rubber.
The ink was prepared by adding 30 parts of zirconium silicate fine powder to 30 parts of zirconium silicate powder (using Solbetsuso #150 as the solvent) and was printed on a 120-mesh stainless steel screen printing plate and dried to a thickness of 50 μm. Obtained transfer paper 1
6, after absorbing water and peeling off the mount 1, water is applied to the glass surface 17 with the cap-like layer 15 facing upward (see FIG. 7), and sand blasted. The blasting conditions were the same as in Example 1, but the blasting pressure was 6 kg/cm ³ . The pattern layer 15 is abrasion resistant, and a shock absorbing layer 14 is provided at the bottom of the pattern layer 15, so that even if the blasting pressure is large, the surface of the bottom of the pattern layer 15 is not scratched and the original glass surface 17 is maintained. It will be left as is. On the other hand, since the exposed surfaces 14A to 14A of the impact mitigation layer 14 have low abrasion resistance, they are damaged by about 1
Abrasion loss occurs in ~2 seconds, and the lower glass surface 17 is worn out. When the blasting pressure is large as in this example, the glass surface 17 is ground deeply;
Deep recesses 17A to 17A are formed (see FIG. 8). At that point, stop sandblasting and transfer paper 1.
By removing 6A, a clear predetermined transfer pattern 18 is obtained on the glass surface 17A (see FIG. 9). In the second embodiment, since the impact mitigation layer 14 is provided below the pattern layer 15, the bottom part of the pattern layer 15 is not damaged even by large blasting pressures. A beautiful transfer pattern 18 is formed.

The transfer paper of Example 2 and the transfer paper of Example 1 were sprayed at a spraying distance of 10 cm and a blasting pressure of 6 kg/cm ^{3 .}
The results of blasting onto a glass surface for 10 seconds and examining the size of the maximum sand particles that would not cause scratches under the pattern layer showed that the transfer paper of Example 2 was Morundum #150, and the transfer paper of Example 1 was Since the transfer paper of Example 2 was Morundum #220 and provided with an impact-reducing layer, the glass surface under the pattern layer was not scratched even by large particles.

Example 3 In FIG. 10, 21 is a mount, 22 is a paste layer, 23 is an adhesive layer, 24 is a pattern layer partially formed on the adhesive layer 23 so as to have a predetermined pattern,
Each of the layers is formed in the same manner as in the first embodiment. 2
5 is a coating layer with low abrasion resistance that covers the exposed surface 23A of the adhesive layer 23 and the pattern layer 24. The coating layer 2
5 is a 30% ethyl cellulose solution (the solvent used is a mixed solvent of equal amounts of Sorbet #150 and butyl cellosorg)
is printed through a 60-mesh nylon screen and dried to a thickness of 20μ.

Therefore, the transfer paper 26 of this example has a coating layer 2 on the surface.
5, the pattern layer 24 is protected when the transfer paper 26 is handled, and no scratches or the like occur on the pattern layer 24. Note that since the coating layer 25 has low abrasion resistance, it is easily removed during sunblasting, and the transfer paper 26 of this example has the same effect as the transfer paper 5 of the first embodiment described above.

Example 4 In FIG. 11, 31 is a mount, 32 is a paste layer, 33 is an adhesive layer, 34 is an impact relaxation layer, and 35 is a pattern layer partially formed on the impact relaxation layer 34 so as to have a predetermined pattern. The respective layers are formed in the same manner as in the second embodiment. 36 is a coating layer formed on the exposed surface 34A of the impact mitigation layer 34 and the pattern layer 35, and has low abrasion resistance against sandblasting. The coating layer 36 has the same composition as the coating layer 25 of Example 3 described above.

Since the transfer paper 37 of this example is provided with the coating layer 36, the surface of the transfer paper 37 can be protected and no scratches will occur during handling. Incidentally, since the coating layer 36 has low abrasion resistance, it is easily removed during sandblasting, and the transfer paper 37 of this example has the same effect as the transfer paper 16 of the second embodiment.

[Brief explanation of the drawing]

1 to 5 show the first embodiment of the present invention, and FIG. 1 is an explanatory diagram showing the structure of the transfer paper;
Figure 2 is an explanatory diagram of the process of peeling off the mount, Figure 3 is an explanatory diagram of the state in which the transfer paper from which the mount has been peeled off is pasted onto the ceramic surface, Figure 4 is a diagram of the state after sandblasting, and Figure 5 is an illustration of the state after sandblasting. FIG. 3 is an explanatory diagram of a transferred pattern. 6th
9 to 9 show a second embodiment of the present invention, FIG. 6 is an explanatory diagram showing another structure of the transfer paper, and FIG. 7 is a transfer paper from which the backing paper has been peeled off, which is applied to a glass surface with water. FIG. 8 is an explanatory diagram of the state after sandblasting, and FIG. 9 is an explanatory diagram of the formed transfer pattern. FIG. 10 is an explanatory diagram showing the configuration of a third embodiment of the invention, and FIG. 11 is an explanatory diagram showing the configuration of a fourth embodiment of the invention. 1, 11, 21, 31... Mount, 2, 12, 2
2, 32... Glue layer, 3, 13, 23, 33... Adhesive layer, 3A, 14A, 23A, 34A... Exposed surface,
4, 15, 24, 35...pattern layer, 5, 5A, 1
6, 16A, 26, 37... Transfer paper, 6... Ceramic surface, 6A, 17A... Concave portion, 7, 18... Transfer pattern,
17... Glass surface, 25, 36... Coating layer.

Claims (1)

[Scope of Claims] 1. A rewettable glue layer that dissolves in water is provided on a water-absorbent transfer mount, and the glue layer has adhesive strength to the surface to be processed. An adhesive layer is provided that has low abrasion resistance against the sand being blasted.
A transfer paper for sandblasting, characterized in that a pattern layer is provided on the adhesive layer, which is partially adhered to the adhesive layer to form a predetermined pattern shape and has high abrasion resistance against the sand. 2. A re-wetting glue layer that dissolves in water is provided on the water-absorbent transfer mount, and the glue layer has adhesive strength to the surface to be processed and is resistant to sand blasting. An adhesive layer with low wear resistance is provided.
and an impact mitigation layer with low abrasion resistance is provided on the adhesive layer to mitigate impact against the sand,
A transfer paper for sandblasting, characterized in that a pattern layer is provided on the impact mitigation layer partially adhered to the impact mitigation layer to form a predetermined pattern shape and has high abrasion resistance against the sand. . 3. A re-wetting glue layer that dissolves in water is provided on the water-absorbent transfer mount, and the glue layer has adhesive strength to the surface to be processed and is resistant to sand blasting. An adhesive layer with low wear resistance is provided.
A pattern layer is provided on the adhesive layer, which is partially adhered to the adhesive layer to form a predetermined pattern shape and has high abrasion resistance against the sand, and on the pattern layer and the exposed adhesive layer, A transfer paper for sandblasting characterized by being provided with a coating layer having low abrasion resistance against sand. 4. A re-wetting glue layer that dissolves in water is provided on the water-absorbent transfer mount, and the glue layer has adhesive strength to the surface to be processed and is resistant to sand blasting. An adhesive layer with low wear resistance is provided.
Further, an impact mitigation layer with low abrasion resistance is provided on the adhesive layer to alleviate the impact against the sand, and on the impact mitigation layer, a material is partially bonded to the impact mitigation layer and has a predetermined pattern shape. A pattern layer having high abrasion resistance against the sand is provided, and a coating layer having low abrasion resistance against the sand is provided on the pattern layer and the exposed impact mitigation layer. Transfer paper for sandblasting.