JPH0220383B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is for sandblasting, which is used when pasting onto the surface of a workpiece such as ceramics or glass and blasting sand to form a predetermined pattern on the workpiece surface corresponding to the pasting pattern. This paper relates to improvements in transfer paper.

Generally, in order to process a grinding pattern on the surface of a workpiece such as glass by sandblasting, a transfer paper, which is a protective film, is used which has a pattern cut out to expose the sandblasted surface. Conventional transfer paper has the disadvantage that it is possible to blast a grinding pattern that is only one level deeper than the surface of the workpiece in one sandblasting process, and the formed grinding pattern becomes monotonous. Therefore, the present inventors conducted research to eliminate the above-mentioned drawbacks of conventional transfer paper, and as a result, obtained favorable results and achieved the present invention.

That is, the object of the present invention is to grind the workpiece surface in two or more stages with different depths, shallow and deep, by one sandblasting,
It is an object of the present invention to provide a transfer paper for sandblasting, which can form a complicated grinding pattern on the surface of a workpiece and has patterns of different strengths. Furthermore, the object of the present invention is to create two-step or more complex grinding patterns on the surface of the workpiece, not only for continuous patterns in which patterns are connected, but also for linear patterns or hollow patterns in which patterns are separated. It is an object of the present invention to provide a transfer paper having pattern layers of various intensities for sandblasting that can be precisely reproduced. Furthermore, another object of the present invention is a transfer paper having pattern layers with different strengths, which are coated with a protective film on the surface of the pattern layer side, which prevents scratches from occurring on the pattern layer during handling, and which is convenient for precision transfer. Our goal is to provide the following.

In the present invention, a glue layer is provided on a mount, an adhesive layer is provided on the glue layer, and the adhesive layer has greater abrasion resistance against sand blasting than the adhesive layer and wear resistance. It is formed by arranging a plurality of pattern layers with different strengths in a predetermined pattern shape and bonding them together.
The mount is preferably made of a material with high water absorption and water resistance, such as Japanese paper or synthetic paper, and a mount of slide transfer paper, which is usually 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 μm. 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 overlaid on it, and it is particularly effective in fixing details, linear parts, and separated parts of the pattern layer, so that it is possible to accurately form a predetermined pattern on the surface to be processed during sandblasting. can be 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 is required to be small and to be subject to abrasion loss due to sandblasting. This adhesive layer is made of a composition liquid containing approximately 20 to 80% by weight (hereinafter simply abbreviated as %) of resin in an organic solvent of approximately 10 to 100%.
It is formed by applying a liquid composition containing about 90% to 0% of a filler onto the paste layer and drying it. 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.
As the organic solvent, linear, aromatic, ester, alcohol, etc. are used. The filler is carbon,
Talc, bentonite, calcium carbonate, silica,
Zirconium silicate, Bengara, sericite,
Fine inorganic powder such as mica, or urethane,
Fine organic 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 easily patterned and abraded by sandblasting. The plurality of pattern layers arranged on the adhesive layer are those that have high abrasion resistance against sandblasting and do not cause abrasion loss, and those that have greater abrasion resistance than the adhesive layer and have different abrasion strengths that cause abrasion loss. The exposed portions of the adhesive layer, which are not provided with a pattern layer, are combined with these and arranged in a predetermined pattern shape.

The part of the workpiece surface covered with the highly wear-resistant pattern layer can be left as the original surface of the workpiece surface without being sanded off. The part of the workpiece surface covered with the pattern layer, which has higher abrasion resistance than the adhesive layer and relatively high abrasion strength, is shallowly scraped to a predetermined depth. A portion of the workpiece surface to which a pattern layer having higher wear resistance and lower abrasion strength than the adhesive layer is applied is scraped more deeply than a portion of the pattern layer having lower wear resistance and relatively higher abrasion strength. The surface of the workpiece attached to the exposed portion of the adhesive layer is ground most deeply. The magnitude of the abrasion strength of the pattern layer is determined by selecting the material of the pattern layer itself, or by changing the layer thickness even if the material is the same. The material of the pattern layer is mainly made of rubber-based resin, and about 30% of the rubber component is added to the organic solvent.
It is formed by applying a rubber composition liquid containing about 50 to 100% and about 50 to 0% of the above-mentioned filler onto the adhesive layer by screen printing or the like. . The pattern layer is about 10~
Printed at approximately 100μm. The rubber components used include styrene-butadiene rubber, nitrile rubber, acrylic rubber, and chlorinated rubber.

The abrasion resistance of the pattern layer can be changed by selecting the rubber composition liquid. Furthermore, the same rubber composition can be changed by changing the thickness of the printed layer. The transfer paper of the present invention can be applied to surfaces to be processed such as glass, ceramics, metals, or plastics.

However, when using transfer paper for levers, the adhesive layer dissolves when the mount is wetted with water, so the mount is peeled off, the adhesive layer side of the pattern layer bonded to the adhesive layer is adhered to the surface of the workpiece, and then sanded. By spraying sand such as particles, the shape of the pattern layer can be reproduced on the surface of the workpiece. In other words, the sand blasted against the transfer paper adhered to the surface of the workpiece,
As the blasting time progresses, the parts are worn in descending order of wear resistance, and the surface of the workpiece is ground in order. On the surface of the workpiece, the part with the lowest wear resistance is ground most deeply, and the part with the higher wear resistance is ground shallower.

The pattern layer is sufficiently adhered to the surface of the workpiece by the adhesive layer, so it will not be peeled off by sandblasting, and the details and lines of the pattern layer are sufficiently adhered to the surface of the workpiece through the adhesive layer. It is. By peeling off the pattern layer together with the adhesive layer, it is possible to obtain a clear pattern on the surface of the workpiece that reproduces the shape of the complex concave pattern layer with different depths.

Further, in the above-mentioned transfer paper of the present invention, an impact-reducing layer for mitigating the impact of sandblasting can be interposed between the adhesive layer and the pattern layer, and the thickness of this impact-reducing layer is about 5 to 100 μm. . That is, as mentioned above, a paste layer is placed on the mount,
In transfer paper with a structure in which an adhesive layer and a pattern layer are provided, if the sand particles are large or the plastic strength 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. 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. The impact-reducing layer that satisfies this condition is 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. things are used. That is, a formulation consisting of 20 parts of polybutyl methacrylate, 50 parts of butyl lactate, and 30 parts of zirconium silicate, or a combination consisting of 15 parts of ethyl cellulose, 60 parts of butyl lactate, and 25 parts of talc.
or 10 parts of styrene-butadiene rubber, 30 parts of aromatic petroleum solvent, and 60 parts of zirconium silicate.

In addition, a coating layer is provided on each pattern layer and exposed adhesive layer of the above-mentioned transfer paper of the present invention, or on the exposed shock absorbing layer, so that the pattern layer is not rubbed or subjected to impact during handling and transfer before transfer. It is possible to prevent surface flaws such as 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 metal acrylate, other acrylic resins, ethyl cellulose, nitrocellulose and other cellulose derivative resins, butyral resins, and vinyl resins such as vinyl chloride. . The thickness of this coating layer is suitably 3 to 30 μm. And the coating layer is, for example, ethyl cellulose.
15 parts of polybutyl lactate, 80 parts of butyl lactate, and 5 parts of DOP, or a combination of 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, in the present invention, an adhesive layer is provided which has adhesive force to the surface of the workpiece and has low abrasion resistance against the sand being blasted, and the adhesive layer is partially attached to the adhesive layer on the adhesive layer. Since the transfer paper is made up of pattern layers that are adhered to form a predetermined pattern shape and have different abrasion resistance against the sand, continuous patterns,
Precise transfer is possible even for linear patterns or hollow patterns, and since the adhesive layer has low abrasion resistance, the exposed part will be worn out during sandblasting, so it is convenient to grind the area without any problems. Good. In the present invention, when an impact relaxation layer with low abrasion resistance is provided between the pattern layer, the adhesive layer, and the adhesive layer, the processed surface portion covered with the pattern layer is prevented from being scratched by sandblasting. Since the outer periphery of the pattern layer can be sufficiently ground, 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 6, 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 that 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 40 μm provided on the glue layer 2, and acrylic solution
An ink mixture of 30 parts by weight (hereinafter simply referred to as parts) and 70 parts of fine zirconium silicate powder (filler) was printed on the entire surface of the glue layer 2 using a 120 mesh stainless steel screen printing plate. It is formed as follows. 4 is a first pattern layer screen printed on the adhesive layer 3 and has a thickness of 12 μm. The first pattern layer 4
5 parts of styrene-butadiene-based synthetic rubber Solblen (manufactured by Asahi Kasei Kogyo KK, trade name), 25 parts of acrylic solution, and 50 parts of fine zirconium silicate powder were mixed into Solbetsuso #150 (manufactured by Etsuso Kagaku KK, a high aromatic compound). A first pattern layer 4 is formed by printing a predetermined pattern on the adhesive layer 3 using a #150 mesh Teslon screen printing plate by dissolving and mixing ink in 20 parts of a boiling point solvent (trade name). . Next, a second pattern layer 5 having a thickness of 30 μm is screen printed on the exposed surface 3A of the adhesive layer 3 so as to have a predetermined pattern. The second pattern layer 5 is made of styrene-butadiene synthetic rubber Solprene (manufactured by Asahi Kasei Kogyo KK,
Product name) 20 parts of zirconium silicate fine powder and 45 parts of zirconium silicate fine powder are dissolved and mixed in 35 parts of Solbetsuso #150.
A predetermined pattern was printed on the adhesive layer 3 using a 120 mesh stainless steel screen printing plate.
The first pattern layer 4 has abrasion resistance against blast sand that is higher than that of the adhesive layer but lower than that of the next second pattern layer, and the second pattern layer 5 is a layer that has high abrasion resistance. Furthermore, the exposed surface 3A of the adhesive layer 3 is a portion with extremely low wear resistance.

The thus obtained transfer paper 8 causes the mount 1 to absorb water, dissolves the dextrin adhesive layer 2, and peels the mount 1 from the adhesive layer 3 (see FIG. 2). Next, the transfer paper 8A from which the mount 1 has been removed is coated with the first pattern layer 4 and the second pattern layer 4.
Apply water to the glass surface 9 with the pattern layer 5 facing upward (see Figure 3). After that, the exposed surfaces 3A to 3A of the first pattern layer 4, second pattern layer 5, and adhesive layer 3 are sand blasted (sand is manufactured by Showa Denko KK).
Manufactured using Morundum #220, spraying distance 10cm,
Blasting time 10 seconds, blasting pressure 4Kg/cm ² ). Second
Since the pattern layer 5 has high abrasion resistance against sand blasting, the glass surface 9 under the second pattern layer 5 is protected. The first pattern layer 4 is abraded and lost by sand blasting in about 6 seconds, but the glass surface 6 is protected during this 6 seconds. and the first
After the loss of the pattern layer 4, the glass surface 9 under the first pattern layer 4
(See Figure 4). Note that the adhesive layer 3 under the first pattern layer 4 and the second pattern layer 5 is the first pattern layer 4.
This is convenient because it also improves the fixation of the second pattern layer 5. On the other hand, since the exposed surfaces 3A to 3A of the adhesive layer 3 have low abrasion resistance, they are abraded and lost in about 1 to 2 seconds by sand blasting, abrading the lower glass surface 9 and forming shallow recesses 10A in the glass surface 9. ~10A (see Figure 4). As the blast continues,
The exposed portion of the first pattern layer 4 and the adhesive layer 3 are lost;
The glass surfaces 9 to 9 below the area are worn away. Shallow recesses 10A to 10 previously formed during this time
In A, the wear progresses further and deep recesses 10B to 1
It becomes 0B. (See Fig. 5) Then, by stopping the sandblasting and removing the remaining portion of the water-coated transfer paper 8A, the glass surface 9 has a portion covered by the second pattern layer 5 and not worn, and a portion covered by the first pattern layer 4. Shallow recess 10C that was worn only for a short time
A transfer pattern 10 having two levels of depth is obtained by the deep recess 10B having a shape corresponding to the exposed surface 3A of the adhesive layer 3 (see FIG. 6). Note that the depth of the shallow recess 10C in this example is 200 μm, and the depth of the shallow recess 10C is 200 μm.
The depth of 0B was 500 μm.

Example 2 In Figures 7 to 12, 11 is a mount, 12
is a paste layer formed on the mount 11, and both are formed in the same manner as in the first embodiment. 13 is an adhesive layer formed on the entire surface of the glue layer 12. The adhesive layer 13 has a thickness of 3 .mu.m 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. 21
is a shock absorbing layer that is screen printed on the entire surface of the adhesive layer 13, and is made of 35 parts of a solution consisting of 20 parts of ethyl cellulose and 80 parts of butyl lactate, and 35 parts of an acrylic resin solution (resin content 40%). A mixture of 30 parts of fine talc powder was applied and dried to a thickness of 50 μm. Reference numeral 14 denotes a first pattern layer having a thickness of 10 μm printed on the impact-reducing layer 21. This first pattern layer 14 is made by adding 200 meshes of Tetron ink to 30 parts of a 20% solution of chlorinated rubber (Solbetsuso #150 is used as the solvent), 40 parts of an acrylic solution (resin content 40%), and 30 parts of zirconium silicate fine powder. Printed on a screen printing plate. Reference numeral 17 denotes a second pattern layer having high abrasion resistance against sand blasting, and is partially printed on the impact mitigation layer 21 so as to form a predetermined pattern. This second
The pattern layer 17 was screen printed with an ink prepared by adding 30 parts of zirconium silicate fine powder to a 20% solution of chlorinated rubber (Solbetsuso #150 was used as the solvent) and dried to a thickness of 50 μm.

The obtained transfer paper 18 is made to absorb water and the mount 1 is peeled off, and then water is pasted on the glass surface 19 with the pattern layer side facing upward (see FIG. 8), and sand blasted. The blasting conditions were the same as in Example 1, but the blasting pressure was 6 kg/cm ² .

Since the exposed surfaces 21A to 21A of the impact mitigation layer 21 have low abrasion resistance, the wear resistance of the exposed surfaces 21A to 21A of the impact mitigation layer 21 is approximately 1 to
It wears out in 2 seconds and wears out the lower glass surface 19 (see FIG. 9). The exposed surface of the first patterned layer 14 withstands blasting for approximately 4 seconds before being lost (see Figure 10).

The second pattern layer 17 has high abrasion resistance, and a shock mitigation layer 21 is provided below the second pattern layer 17.
Even if the blasting pressure is high, the glass surface 19 below the second pattern layer 17 is not scratched and the original glass surface 19 remains as it is (see FIG. 10).

In this way, according to the transfer paper 18A of the second embodiment, first, the exposed surfaces 21A to 21A of the impact mitigation layer 21 are
is lost in about 1 to 2 seconds, and then, after about 4 seconds, the exposed first pattern layer 14 is worn out and the lower glass surface 1 is lost.
Wear out 9. After 10 seconds, the sandblasting is stopped and the transfer paper 18A is removed, so that the glass surface 19 has two recesses 20D and 20 with different depths.
A predetermined transfer pattern 20 having E, 20F is obtained (see FIG. 11).

In the second embodiment, since the impact relaxation layer 21 is provided under each of the first and second pattern layers 14 and 17, the bottom part of each pattern layer is not damaged even under large blasting pressure, and deep blasting can be performed. Therefore, a beautiful transfer pattern 20 with two levels of depth is formed.

Example 3 In FIG. 12, 31 is a mount, 32 is a paste layer, 33 is an adhesive layer, 34 is a pattern layer partially formed on the adhesive layer 33 so as to have a predetermined pattern,
Each of the layers is formed in the same manner as in the first embodiment. 3
6 is the exposed surface 33A of the adhesive layer 33 and the pattern layers 34, 3
It is a coating layer with low abrasion resistance that covers 5. The coating layer 36 is formed by printing a 30% solution of ethyl cellulose (using a mixed solvent of equal amounts of Sorbetso #150 and butyl cellosorg) through a 60 mesh nylon screen and drying it to a thickness of 20 μm.

Therefore, the transfer paper 38 of this example has a coating layer 3 on the surface.
6, when handling the transfer paper 38, the pattern layers 34, 35 are protected, and the pattern layers 34, 35 are protected.
35 has no scratches or the like. Note that since the coating layer 36 has low abrasion resistance, it is easily removed during sandblasting, and the transfer paper 38 of this example has the same effect as the transfer paper 5 of the first embodiment described above.

Example 4 In FIG. 13, 41 is a mount, 42 is a paste layer, 43 is an adhesive layer, 51 is an impact mitigation layer, and 44 is a pattern partially formed on the impact mitigation layer 51 in a predetermined pattern. The layers are formed in the same manner as in the second embodiment. 56 is a coating layer formed on the exposed surface 51A of the impact mitigation layer 51 and the pattern layers 44 and 47, and has low abrasion resistance against sandblasting. The coating layer 56 has the same composition as the coating layer 36 of Example 3 described above.

Since the transfer paper 48 of this example is provided with a coating layer 56, the surface of the transfer paper 48 can be protected and no scratches will occur during handling. Incidentally, since the coating layer 56 has low abrasion resistance, it is easily removed during sandblasting, and the transfer paper 48 of this example has the same effect as the transfer paper 18 of the second embodiment.

[Brief explanation of drawings]

1 to 6 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 state diagram showing the initial state of sandblasting, and Figure 5 6 is a state diagram after sandblasting, and FIG. 6 is an explanatory diagram of the complex three-dimensional pattern formed. 7 to 12 show a second embodiment of the present invention, in which FIG. 7 is an explanatory diagram showing another structure of the transfer paper, and FIG. 8 is a transfer paper from which the mount has been peeled off, and is placed on a glass surface. An explanatory diagram of the water-applied state, Figure 9 is a diagram of the initial state of sandblasting, Figure 10 is a diagram of the state in the middle or after the sandblasting, and Figure 11 is an explanatory diagram of the complex three-dimensional pattern formed. be. FIG. 12 is an explanatory diagram showing the configuration of a third embodiment of the present invention, and FIG. 13 is an explanatory diagram showing the configuration of a fourth embodiment of the present invention. 1, 11, 31, 41... mount, 2, 12, 3
2, 42... Paste layer, 3, 13, 33, 43...
Adhesive layer, 3A, 21A, 33A, 51A... exposed surface, 4, 14, 34, 44... first pattern layer, 8,
18, 38, 48...transfer paper, 5, 17, 35,
47...Second pattern layer, 19...Glass surface, 21,
51... Shock mitigation layer, 36, 56... Coating layer.

Claims (1)

[Scope of Claims] 1. A rewettable glue layer that dissolves in water is provided on a water-absorbing mount, and on the glue layer there is a layer that has adhesive strength to the surface to be processed and is blasted. An adhesive layer having low abrasion resistance against the sand is provided, and a plurality of patterns are bonded to the adhesive layer and have greater abrasion resistance than the adhesive layer and different abrasion strengths against the sand. A transfer paper for sandblasting characterized by having sections arranged in a predetermined pattern. 2. A rewettable glue layer that dissolves in water is provided on the water-absorbing 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 abrasion resistance is provided, and on the adhesive layer are provided a plurality of patterned portions that are adhered to the adhesive layer and have greater abrasion resistance to sand than the adhesive layer and have various abrasion strengths; A transfer paper for sandblasting, characterized in that exposed portions of an adhesive layer that are not provided are arranged in a predetermined pattern. 3. A re-wetting glue layer that dissolves in water is provided on the water-absorbent 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 abrasion resistance is provided, and an impact mitigation layer with low abrasion resistance is provided on the adhesive layer, and an impact mitigation layer with low abrasion resistance is provided on the adhesive layer. A sandblasting device characterized in that a plurality of patterned portions having greater abrasion resistance than the layers and having various abrasion strengths and exposed portions of the impact mitigation layer without the patterned layer are arranged in a predetermined pattern shape. Transfer paper. 4. A water-soluble and re-wetting glue layer is provided on the water-absorbent 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 abrasion resistance is provided, and an impact mitigation layer with low abrasion resistance is provided on the adhesive layer and is bonded to the adhesive layer and cushions the impact against the sand. On the other hand, a plurality of pattern parts having higher abrasion resistance and different abrasion strengths than the adhesive layer and the impact mitigation layer and exposed parts of the impact mitigation layer without the pattern are arranged in a predetermined pattern shape, and the pattern is arranged in a predetermined pattern. 1. A transfer paper for sandblasting, characterized in that a coating layer having low abrasion resistance against sand is provided on the pattern layer in the part and the impact relaxation layer in the exposed part.