JPH07239386A - Dial for timepiece and its manufacturing method - Google Patents

Abstract

PURPOSE:To inexpensively provide a dial for timepiece having a pattern part such as three-dimensional indices, marks and letters in a simple constitution and a simple method. CONSTITUTION:Metal foil 5 having a deposited film 5a is fixed so that a pattern part 6 such as indices, marks and letters may cover the shape and outline of a three-dimensional formed pressure-sensitive adhesive 4. In its manufacture method, the metal foil 5 having the deposited film 5a and a metal foil film 8 composed of a transparent film 7 are put on the upper face of the three- dimensionally formed pressure sensitive adhesive 4, and after pushing is performed on the shape and outline of the pressure sensitive adhesive 4, only the metal foil 5 having the deposited film 5a is fixed on the three-dimensional pressure-sensitive adhesive 4 by peeling off the metal foil film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece dial having pattern parts such as three-dimensional indexes, marks and letters, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing a timepiece dial having a pattern portion of three-dimensional indexes, marks, characters, etc.,
There was a method by overlay plating. In this method, as shown in the manufacturing process charts of FIGS. 9 to 12, first, a surface treatment 12 is applied by plating or painting on the upper surface of a dial board 11 having a mirror surface or an asperity pattern formed by asahi light or stamping. After that (FIG. 9), a transparent or semi-transparent organic coating 13 is applied, and if necessary, lapping is performed to form a flat and smooth surface (FIG. 10). Next, as shown in FIG. 11, a conductive film 14 is formed at a desired position to be a pattern portion of indexes, marks, characters, etc. by masking and vapor deposition, and further, as shown in FIG. 12, the conductive film 14 is plated for a long time. Then, a timepiece dial having a pattern portion 15 such as a three-dimensional index, a mark, and a letter was obtained.

In the dial plate for a timepiece, the uneven pattern formed on the dial plate substrate 11 has a flat and smooth organic coating 14 to make it look deep and three-dimensional, and the pattern portion 15 has a metallic luster and is three-dimensional. Since it looks like a real thing, it was very luxurious.

[0004]

In the above-mentioned conventional example, it takes a lot of time and labor to perform masking and vapor deposition for partially obtaining the conductive coating film 14, and it takes a long time to form the pattern portion 15 in three dimensions. Because time plating treatment is required,
There has been a problem that the cost is so high that the field of use as a timepiece dial can be applied only to high-class watches. The present invention solves the above-mentioned problems and provides a timepiece dial plate having a pattern portion of three-dimensional indexes, marks, characters, etc. at a low cost with a simple configuration and method.

[0005]

DISCLOSURE OF THE INVENTION The present invention comprises a dial board having a mirror surface or an asperity pattern formed by Asahi Kotsu, stamping, etc., and a surface treatment such as plating or painting applied to the upper surface of the dial board. Further, if necessary, a flat and smooth transparent or semitransparent organic coating is formed, and this surface treatment or a three-dimensional acrylic two-component reactive adhesive partially formed on the upper surface of the organic coating is used. The watch dial has a three-dimensional pressure-sensitive adhesive on the surface of which a metal foil having a vapor deposition film is fixed.

As a method of manufacturing the same, a surface treatment such as plating or painting is applied to the upper surface of the dial plate substrate having a mirror surface or an asperity pattern formed by Asahi Kotsu, stamping, or the like, or a transparent or semitransparent organic film. Is formed by painting and, if necessary, is lapped and polished to make it a flat and smooth surface, and then partially printed or stamped on the top surface of the surface treatment or the top surface of the transparent or semi-transparent organic coating by an acrylic two-liquid reaction type The adhesive is formed three-dimensionally, and then the adhesive is temporarily dried to such an extent that the adhesive is semi-cured, and then a metal foil film consisting of a metal foil having a vapor deposition film and a transparent film is placed on the dial board. , And after fixing the metal foil having the vapor deposition film of the metal foil film to the pressure-sensitive adhesive by pressing the position of the three-dimensionally formed pressure-sensitive adhesive along its contour Wherein a method for producing a metal foil film said by the pulling peeling stereoscopic adhesive timepiece dial to fix the metal foil having only the deposited film portion.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a sectional view of a timepiece dial according to an embodiment of the invention. In the figure, reference numeral 1 denotes a dial plate substrate on which irregularities or the like are formed by a mirror surface or light rays, stamping or the like, and an upper surface thereof is subjected to a surface treatment 2 by plating or painting. A flat and smooth transparent or semi-transparent organic coating 3 is formed on the upper surface of the surface treatment 2. On the organic coating 3, desired portions to be pattern portions 6 such as indexes, marks and characters are formed. An acrylic two-liquid reaction type pressure sensitive adhesive 4 having a rounded cross section is formed on the surface of the metal foil 5, and a metal foil 5 having a vapor deposition film 5a is fixed so as to cover the contour of the pressure sensitive adhesive 4.

With the above-mentioned structure, the pattern portion 6 such as a three-dimensional index, mark, character, or the like has a structure in which the metal foil 5 having the vapor deposition film 5a is fixed so as to cover the contour of the adhesive 4. Therefore, it can be manufactured at a very low cost, and the quality of the pattern portion 6 conforms to the contour of the adhesive 4 because the metal foil 5 is very thin, and its appearance has a uniform metallic luster as if plated. Is.

Next, a method for manufacturing the above-mentioned timepiece dial will be described with reference to FIGS. First, as shown in FIG. 2, a surface treatment 2 is applied to the upper surface of a dial plate substrate 1 having a mirror surface or an asperity pattern formed by stamping, stamping or the like by plating or painting. Next, as shown in FIG. 3, a transparent or semitransparent organic coating 3 is formed on the upper surface of the surface treatment 2 by coating, and the upper surface of the organic coating 3 is polished by lapping to form a flat and smooth surface. The reason why the organic coating 3 is made flat and smooth is to make the uneven pattern formed on the dial substrate 1 have a deep three-dimensional effect and to be clearly visible. The coating 3 has good fluidity and is thin and uniform,
Moreover, the polishing by lapping may be omitted as long as it is formed smoothly and does not affect appearance quality such as accumulation and distortion.

Next, as shown in FIG. 4, an acrylic two-liquid reaction type adhesive 4 is three-dimensionally formed by printing or stamping at a desired position to be a pattern portion 6 of indexes, marks, characters and the like. Then, in the state shown in FIG. 4, the acrylic two-component reaction type three-dimensional pressure-sensitive adhesive 4 is temporarily dried at a temperature of 40 to 60 ° C.
To a semi-cured state. Next, as shown in FIG. 5, a metal foil film 8 composed of a metal foil 5 having a vapor deposition film 5a as shown in FIG. 7 and a transparent film 7 is placed on the upper surface to cover the contour of the three-dimensionally formed adhesive 4. As described above, the metal foil 5 having the vapor deposition film 5a is fixed to the three-dimensional pressure-sensitive adhesive 4 by pressing it with an elastic cloth, sponge or the like. Since the metal foil 5 has a very thin thickness of 5 to 20 μm, it fits very well with the contour of the three-dimensional adhesive 4. Further, the vapor deposition film 5a can be made of various materials such as Au, Cr, Al, or a color, and can be variously selected in combination with the surface treatment 2.

In the above process, the reason why the acrylic two-liquid reaction type pressure-sensitive adhesive was selected as the pressure-sensitive adhesive 4 is that the three-dimensional shape can be maintained because the crosslinking reaction progresses and is cured. After the pressure-sensitive adhesive 4 is semi-cured by temporary drying, when the metal foil 5 is fixed by pressing so as to cover its contour, the three-dimensional pressure-sensitive adhesive 4 does not deform and is fixed uniformly.

However, other types of adhesives, such as rubber adhesives and acrylic one-component adhesives, are not hardened and are soft, and therefore their contours are covered in order to fix the metal foil 5 after being formed three-dimensionally. Thus, the three-dimensionally formed pressure-sensitive adhesive is deformed. Since the metal foil 5 is very thin, this deformation causes cracks and makes it impossible to evenly adhere to the contour.

Finally, as shown in FIG. 6, the metal foil film 8 is peeled off to fix the metal foil 5 having the vapor deposition film 5a only to the three-dimensional pressure-sensitive adhesive 4, and the metal foil film 8 shown in FIG. The clock dial is completed. When the metal foil film 8 is peeled off, since the metal foil 5 having the vapor deposition film 5a is very thin, it can be cut off neatly along the shape and contour of the three-dimensional pressure-sensitive adhesive 4. For example, the vapor deposition film 5a is Au. In the case of a vapor-deposited film, it looks as if it had a metallic luster as if it were three-dimensionally plated with Au.

In this embodiment, the transparent or semi-transparent organic coating 3 is formed after the surface treatment 2 such as plating and painting, and the three-dimensional adhesive 4 is formed on the organic coating 3.
A three-dimensional pressure-sensitive adhesive 4 may be directly formed on the upper surface of the surface treatment 2 to form a timepiece dial plate without the organic coating 3.

FIG. 8 is a sectional view of a timepiece dial according to another embodiment of the present invention. In this embodiment, an acrylic two-liquid reaction type adhesive is applied to the upper surface of a surface treatment 2 such as plating or painting. The agent 4 is three-dimensionally formed, and the metal foil 5 having the vapor deposition film 5a is fixed along the contour of the three-dimensional pressure-sensitive adhesive 4. Further, a flat and smooth transparent or semitransparent organic coating 9 is formed on the upper surface.

With the above-described structure, the metal foil 5 fixed to the three-dimensionally formed pressure-sensitive adhesive 4 is compressed from the entire surface, so that the metal foil 5 has a three-dimensional contour of the pressure-sensitive adhesive 4. Since it is fixed with more adhesiveness, uniform fixing is possible.

Further, since the organic coating 9 is flat and smooth, the unevenness formed on the dial substrate and the surface treatment 2 give a deeper three-dimensional effect and give a higher-grade feeling.

[0018]

As described above in detail, according to the method of manufacturing a timepiece dial according to the present invention, a three-dimensional index, mark, or pattern portion is formed by printing or stamping a partially acrylic resin. A three-component two-component reaction type pressure-sensitive adhesive is three-dimensionally formed, and after the pressure-sensitive adhesive is tentatively dried to such an extent that it is semi-cured, a metal foil film comprising a metal foil having a vapor deposition film and a transparent film is placed thereon, and By pressing along the shape and contour of the agent, because it is a method of fixing only the metal foil having a vapor deposition film to the adhesive, there is no need for mask treatment and vapor deposition and long-time swelling plating as in the conventional case.
A three-dimensional pattern portion can be obtained very easily.

Further, since the metal foil having the vapor-deposited film is very thin, it is easy to adapt to the shape and contour of the three-dimensional pressure-sensitive adhesive, and even when the metal foil film is peeled off, the three-dimensional pressure-sensitive adhesive has the shape and contour. Since only the metal foil having the vapor deposition film is cut off neatly, it looks as if heap plating was performed and has a uniform metallic luster.

Further, the formation of the vapor-deposited film on the metal foil is easy because it is formed not entirely but entirely.
Since u, Cr, Al, and color colors can be deposited, a desired color tone can be inexpensively formed on a three-dimensional pattern portion, and the color tone of each pattern portion is not the same color tone, It is possible to easily and inexpensively change the color tone for each.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a timepiece dial according to an embodiment of the invention.

FIG. 2 is a cross-sectional view showing a manufacturing process of the timepiece dial according to the embodiment of the invention.

FIG. 3 is a cross-sectional view showing a manufacturing process of the timepiece dial according to the embodiment of the invention.

FIG. 4 is a cross-sectional view showing a manufacturing process of the timepiece dial according to the embodiment of the invention.

FIG. 5 is a cross-sectional view showing a manufacturing process of the timepiece dial according to the embodiment of the invention.

FIG. 6 is a cross-sectional view showing a manufacturing process of the timepiece dial according to the embodiment of the invention.

FIG. 7 is a cross-sectional view showing a metal foil film.

FIG. 8 is a cross-sectional view of a timepiece dial according to another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a manufacturing process of a conventional timepiece dial.

FIG. 10 is a cross-sectional view showing a manufacturing process of a conventional timepiece dial.

FIG. 11 is a cross-sectional view showing a manufacturing process of a conventional timepiece dial.

FIG. 12 is a cross-sectional view showing a manufacturing process of a conventional timepiece dial.

[Explanation of symbols]

 1 dial plate substrate 2 surface treatment 3 organic film 4 adhesive 5 metal foil 5a vapor deposition film 6 pattern part 7 transparent film 8 metal foil film 9 organic film

Claims (6)

[Claims] 1. A dial plate substrate having a mirror surface or an uneven pattern formed by Asahi Kotsu, stamping, etc., a surface treatment such as plating or painting applied to the upper face of the dial plate substrate, and a partial top surface of this surface treatment. It consists of a three-dimensional acrylic two-liquid reaction type adhesive formed on the surface of the three-dimensional adhesive,
A dial for a timepiece, characterized in that a metal foil having a vapor-deposited film is fixed. 2. The surface of a dial plate substrate having a concavo-convex pattern formed by a mirror surface, asahi light, stamping or the like is subjected to a surface treatment by plating or painting, and then partially printed by an acrylic two-liquid reaction type. Forming the adhesive three-dimensionally, after further temporary drying to the extent that this adhesive is semi-cured, a metal foil film consisting of a metal foil having a vapor deposition film and a transparent film is placed on the dial plate substrate, And after the metal foil having the vapor deposition film of the metal foil film is fixed to the pressure-sensitive adhesive by pressing the position of the three-dimensionally formed pressure-sensitive adhesive along the contour thereof, the metal foil film A method for manufacturing a timepiece dial, characterized in that a metal foil having a vapor-deposited film is fixed only to the three-dimensional pressure-sensitive adhesive portion by peeling off. 3. The timepiece dial according to claim 1, wherein a flat and smooth transparent or semitransparent organic coating is further formed on the surface treated surface. 4. After the surface treatment, a transparent or semitransparent organic film is further formed by coating, and if necessary, lapping is performed to make the film flat and smooth. A method for manufacturing the described timepiece dial. 5. The timepiece dial according to claim 1, wherein a flat and smooth transparent or semitransparent organic coating is formed on the upper surface. 6. After fixing a metal foil having a vapor deposition film,
3. The timepiece dial manufacturing method according to claim 2, further comprising a transparent or translucent organic coating formed by painting, and lapping and polishing as necessary to make the surface flat and smooth.