JP2007121265A - Clock dial and clock - Google Patents

Abstract

An object of the present invention is to provide a timepiece dial having transparency of electromagnetic waves and excellent in aesthetic appearance and durability, and to provide a timepiece having the timepiece dial.
A timepiece dial 1 includes a glass fiber sheet 2 made of glass fiber, and a first film 3 provided on the first surface 21 side which is one main surface of the glass fiber sheet 2. The second film 4 provided on the second surface 22 side which is the other main surface of the glass fiber sheet 2 and the outer peripheral surface of the glass fiber sheet 2 are arranged so as to prevent fraying of the glass fibers. A fraying prevention member 5 having a function is provided. The glass fiber sheet 2 is provided in the vicinity of the first surface 21, provided in the vicinity of the first region 23 into which at least a part of the first film 3 has entered, and in the vicinity of the second surface 22, and the second film 4. Are provided between the first region 23 and the second region 24, and the first film 3 and the second film 4 do not enter the third region 24. And a region 25.
[Selection] Figure 1

Description

  The present invention relates to a timepiece dial and a timepiece.

A timepiece dial is required to have excellent aesthetic appearance as a decorative product as well as excellent visibility as a practical product. Conventionally, in order to achieve such an object, a metal material such as Au or Ag has generally been used as a constituent material of a timepiece dial.
Also, on the other hand, for the purpose of reducing production costs and improving the degree of freedom in forming the timepiece dial, an attempt is made to form a coating made of a metal material on the surface using plastic as a base material. (For example, refer to Patent Document 1).
However, plastics generally have poor adhesion to metal materials. For this reason, there is a problem that peeling between the base material and the coating film is likely to occur, and the durability of the timepiece dial is inferior.

  In addition, for example, in radio timepieces and solar timepieces (timepieces equipped with solar cells), the timepiece dial is required to have electromagnetic wave (radiowave, light) permeability. For this reason, plastic dials have been used as such timepiece dials, but since the appearance of plastic lacks a high-class appearance, it is made of a metallic material for the purpose of improving the aesthetic appearance of the timepiece dial. There are attempts to coat with a constructed thin film. However, as described above, there is a problem that plastic is inferior in adhesion to a metal material. In addition, in order to increase the transmission of electromagnetic waves (radio waves, light), the thickness of the thin film needs to be sufficiently thin. However, if the thickness of the thin film is sufficiently thin, the aesthetics of the entire watch dial There was a problem that the appearance deteriorated.

JP 2003-239083 A (page 4, left column, lines 37-42)

  An object of the present invention is to provide a timepiece dial having transparency of electromagnetic waves (radio waves, light) and excellent in aesthetic appearance and durability, and a timepiece having the timepiece dial. There is.

Such an object is achieved by the present invention described below.
The timepiece dial of the present invention, a glass fiber sheet mainly composed of glass fiber,
A first film provided on the first surface side which is one main surface of the glass fiber sheet;
A timepiece dial provided with a second film provided on the second surface side which is the other main surface of the glass fiber sheet,
The glass fiber sheet is provided in the vicinity of the first surface, provided in the first region where at least a part of the first film enters, and in the vicinity of the second surface, A second region at least partially entering, and a third region provided between the first region and the second region, the first film and the second film not entering Having
The fray preventing member is provided so as to surround the outer peripheral surface of the glass fiber sheet and has a function of preventing fraying of the glass fiber.
As a result, it is possible to provide a timepiece dial having transparency of electromagnetic waves (radio waves and light) and excellent in aesthetic appearance and durability.

In the timepiece dial according to the aspect of the invention, the fraying prevention member includes the periphery of the main surface of the first film and / or the periphery of the main surface of the second film together with the outer peripheral surface of the glass fiber sheet. It is preferable to cover the vicinity of the part.
As a result, it is possible to more effectively prevent a decrease in aesthetics (aesthetic appearance) due to fraying of the glass fiber, and to maintain an excellent aesthetic appearance for a longer period of time, and a timepiece dial is applied. This can more reliably prevent adverse effects on the watch.

In the timepiece dial of the present invention, the timepiece dial has an opening in the vicinity of the central portion in the main surface direction,
Furthermore, it is preferable to provide a fraying prevention member that is disposed so as to cover the inner peripheral surface of the opening and has a function of preventing fraying of the glass fiber.
As a result, it is possible to more effectively prevent a decrease in aesthetics (aesthetic appearance) due to fraying of the glass fiber, and to maintain an excellent aesthetic appearance for a longer period of time, and a timepiece dial is applied. This can more reliably prevent adverse effects on the watch.

In the timepiece dial according to the aspect of the invention, the fraying prevention member disposed so as to cover the inner peripheral surface of the opening includes the first peripheral surface near the opening along with the inner peripheral surface of the glass fiber sheet. It is preferable to cover a part of the main surface of the film and / or a part of the main surface of the second film in the vicinity of the opening.
As a result, it is possible to more effectively prevent a decrease in aesthetics (aesthetic appearance) due to fraying of the glass fiber, and to maintain an excellent aesthetic appearance for a longer period of time, and a timepiece dial is applied. This can more reliably prevent adverse effects on the watch.

In the timepiece dial according to the aspect of the invention, it is preferable that the fraying prevention member is colorless or silvery.
Thereby, the aesthetic appearance of the timepiece dial can be made particularly excellent.
In the timepiece dial according to the aspect of the invention, it is preferable that the first film is formed mainly of a urethane resin at a portion entering the glass fiber sheet.
Thereby, it is possible to make the permeability of electromagnetic waves (radio waves, light) particularly excellent while sufficiently improving the aesthetic appearance of the timepiece dial. Further, the adhesion between the first film and the glass fiber sheet can be made particularly excellent, and the durability of the timepiece dial can be made particularly excellent.

In the timepiece dial according to the aspect of the invention, it is preferable that the second film is formed mainly of a urethane resin at a portion entering the glass fiber sheet.
Thereby, it is possible to make the permeability of electromagnetic waves (radio waves, light) particularly excellent while sufficiently improving the aesthetic appearance of the timepiece dial. Further, the adhesion between the second film and the glass fiber sheet can be made particularly excellent, and the durability of the timepiece dial can be made particularly excellent.

In the timepiece dial of the present invention, the glass fiber sheet preferably has a thickness of 30 to 500 μm.
As a result, the aesthetic appearance and durability of the timepiece dial can be made sufficiently excellent, and the electromagnetic wave (radio wave, light) permeability can be made particularly excellent.
In the timepiece dial of the present invention, the glass fiber preferably has a thickness of 1 to 20 μm.
As a result, the aesthetic appearance of the timepiece dial can be made particularly excellent while sufficiently improving the transmission of electromagnetic waves (radio waves and light). Further, the adhesion of the glass fiber sheet to the first film and the second film can be made particularly excellent, and the mechanical strength (stability against deformation) of the timepiece dial is particularly excellent. Can be. As a result, the durability of the timepiece dial is particularly excellent.

In the timepiece dial of the present invention, the surface density of the glass fiber sheet is preferably ²⁰ to 500 g / m ² .
As a result, the aesthetic appearance of the timepiece dial can be made particularly excellent while sufficiently improving the transmission of electromagnetic waves (radio waves and light). Further, the adhesion of the glass fiber sheet to the first film and the second film can be made particularly excellent, and the mechanical strength (stability against deformation) of the timepiece dial is particularly excellent. Can be. As a result, the durability of the timepiece dial is particularly excellent.

In the timepiece dial of the present invention, the thickness of the third region is preferably 5 to 280 μm.
Thereby, the aesthetic appearance of the timepiece dial can be made particularly excellent while the durability of the timepiece dial is sufficiently excellent.
The timepiece dial of the present invention is preferably a radio timepiece dial.
The timepiece dial of the present invention has excellent aesthetic appearance and durability, as well as excellent electromagnetic wave (radio wave) permeability. Therefore, the timepiece dial of the present invention can be suitably applied to a radio timepiece dial.

The timepiece dial of the present invention is preferably a solar timepiece dial.
The timepiece dial of the present invention is excellent in aesthetic appearance and durability, and also excellent in electromagnetic wave (light) permeability. Therefore, the timepiece dial of the present invention can be suitably applied to a solar timepiece dial.
The timepiece of the present invention includes the timepiece dial of the present invention.
Thereby, it is possible to provide a timepiece having an aesthetic appearance and durability. In addition, it is possible to provide a timepiece (for example, a radio timepiece, a solar timepiece, a solar timepiece timepiece, etc.) that can effectively use electromagnetic waves (radio waves, light) from the outside.

  According to the present invention, there is provided a timepiece dial having transparency of electromagnetic waves (radio waves, light) and excellent in aesthetic appearance and durability, and a timepiece having the timepiece dial. be able to.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.
<Watch dial>
First, a preferred embodiment of the timepiece dial of the present invention will be described.
FIG. 1 is a sectional view showing a first embodiment of a timepiece dial according to the present invention.
As shown in FIG. 1, the timepiece dial 1 has an opening 7 in the vicinity of the center in the main surface direction, and includes a glass fiber sheet 2, a first film 3, and a second film 4. And a fraying prevention member 5 disposed so as to surround the outer peripheral surface (end surface) of the glass fiber sheet 2. The timepiece dial 1 is usually one of a surface side provided with the first film 3 and a surface side provided with the second film 4 when applied to a timepiece as will be described later. However, in the following description, unless otherwise specified, the surface side on which the second film 4 is provided is used as the outer surface side. Will be described.

[Glass fiber sheet]
The glass fiber sheet 2 is mainly composed of glass fibers.
The glass fiber sheet 2 has a glossy white appearance because it has a function of irregularly reflecting external light. Such a glass fiber sheet 2 can improve the aesthetic appearance of the timepiece dial 1.

Moreover, by providing the glass fiber sheet 2, the timepiece dial 1 has a three-dimensional texture, and has an excellent appearance that has not been achieved in the past.
Moreover, the glass material which comprises glass fiber is generally excellent in the permeability | transmittance (electromagnetic wave transmissivity) of electromagnetic waves (electric wave, light). Moreover, since the glass fiber sheet 2 generally has a gap between the glass fiber and the glass fiber, the glass fiber sheet 2 has particularly excellent electromagnetic wave (radio wave, light) permeability.
Examples of the constituent material of the glass fiber include soda glass, crystalline glass, quartz glass, lead glass, potassium glass, borosilicate glass, and alkali-free glass.

  The refractive index (absolute refractive index) of the constituent material of the glass fiber is not particularly limited, but is preferably 1.40 to 1.70, more preferably 1.45 to 1.65, and 1.50. More preferably, it is -1.60. When the refractive index of the constituent material of the glass fiber is a value within the above range, the aesthetic appearance of the timepiece dial 1 is particularly excellent while sufficiently improving the transparency of electromagnetic waves (radio waves, light). can do.

  Moreover, the thickness of the glass fiber which comprises the glass fiber sheet 2 is although it does not specifically limit, It is preferable that it is 1-20 micrometers, It is more preferable that it is 2-15 micrometers, It is further more preferable that it is 4-13 micrometers. When the thickness of the glass fiber is a value within the above range, the aesthetic appearance of the timepiece dial 1 is particularly excellent while sufficiently improving the permeability of electromagnetic waves (radio waves, light). it can. In addition, the adhesion of the glass fiber sheet 2 to the first film 3 and the second film 4 can be made particularly excellent, and the mechanical strength of the timepiece dial 1 (stability against deformation). Etc. can be made particularly excellent. As a result, the durability of the timepiece dial 1 is particularly excellent. On the other hand, when the thickness of the glass fiber is less than the lower limit value, the aesthetic appearance as the timepiece dial 1 is lowered, and the electromagnetic wave (radio wave, light) permeability is also lowered. On the other hand, when the thickness of the glass fiber exceeds the upper limit, the aesthetic appearance as the timepiece dial 1 is deteriorated (particularly, it becomes difficult to obtain a high-quality appearance with high whiteness) and the appearance The width of the variation becomes narrower. In addition, the adhesion with the first film 3 and the second film 4 tends to decrease.

Further, the surface density of the glass fiber sheet 2 is not particularly limited, but is preferably 20 to 500 g / ^{m 2,} more preferably from 40400 g / ^{m 2,} in the range of 100 to 300 g / ^{m 2} Is more preferable. When the surface density of the glass fiber sheet 2 is a value within the above range, the aesthetic appearance of the timepiece dial 1 is particularly excellent while sufficiently improving electromagnetic wave (radio wave, light) permeability. be able to. In addition, the adhesion of the glass fiber sheet 2 to the first film 3 and the second film 4 can be made particularly excellent, and the mechanical strength of the timepiece dial 1 (stability against deformation). Etc. can be made particularly excellent. As a result, the durability of the timepiece dial 1 is particularly excellent.

  Although the thickness of the glass fiber sheet 2 is not specifically limited, It is preferable that it is 30-500 micrometers, It is more preferable that it is 50-400 micrometers, It is further more preferable that it is 80-300 micrometers. When the thickness of the glass fiber sheet 2 is within the above range, the aesthetic appearance and durability of the timepiece dial 1 are sufficiently excellent, and the electromagnetic wave (radio wave, light) permeability is particularly excellent. Can be. On the other hand, if the thickness of the glass fiber sheet 2 is less than the lower limit, it is difficult to make the aesthetic appearance of the timepiece dial 1 sufficiently excellent depending on the constituent material of the glass fiber sheet 2 and the like. become. Further, if the thickness of the glass fiber sheet 2 is less than the lower limit value, it becomes difficult to provide the first region 23 and the second region 24 described later with sufficient thickness, and as a result, the timepiece dial It may be difficult to sufficiently increase the durability of 1. On the other hand, if the thickness of the glass fiber sheet 2 exceeds the upper limit, the thickness of the timepiece dial 1 as a whole becomes large. For example, when applied to a timepiece as described later, it is disadvantageous for making the timepiece thinner. Become. Moreover, when the thickness of the glass fiber sheet 2 exceeds the upper limit value, depending on the constituent material of the glass fiber sheet 2, the transmittance of the electromagnetic wave as the timepiece dial 1 is lowered, and the solar timepiece (with built-in solar cell) To be suitably applied to radio timepieces and the like.

Further, the glass fiber sheet 2 may be composed of any woven structure such as plain weave, twill weave, satin weave, leopard weave, imitation weave, etc. It may be a thing. Among these, a structure composed of a woven structure is preferable, and a structure composed of a woven structure woven in a plain weave is more preferable. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.
The first film 3 is provided on the first surface 21 side which is one main surface of the glass fiber sheet 2. Moreover, the 2nd film | membrane 4 is provided in the 2nd surface 22 side which is the other main surface (the main surface on the opposite side to the 1st surface 21) of the glass fiber sheet 2. As shown in FIG. And the fraying prevention member 5 is arranged so that the outer peripheral surface part of the glass fiber sheet 2 may be surrounded.

And the glass fiber sheet 2 has the 1st area | region 23 into which a part of 1st film | membrane 3 entered in the 1st surface 21 vicinity, and the 2nd surface 22 vicinity has 2nd. The second region 24 into which a part of the film 4 enters is provided.
Thus, when the surface of the glass fiber sheet is covered with a film, the timepiece dial is excellent in mechanical strength. And in this invention, since the film | membrane has penetrated into a part of thickness direction of a glass fiber sheet, the adhesiveness of a glass fiber sheet and a film | membrane becomes excellent. In particular, in the glass fiber sheet, since the glass fibers are entangled, the anchor effect is effectively exhibited when the film enters between the glass fibers and the glass fibers, and the adhesion between the glass fiber sheet and the film is particularly good. It will be excellent. For this reason, it is possible to maintain excellent mechanical strength stably over a long period of time. Further, the glass fiber sheet is constituted by having a structure in which the surface of the glass fiber sheet is covered with a film (first film and second film), and the film enters a part in the thickness direction of the glass fiber sheet. It is possible to effectively prevent the glass fibers to be frayed. As a result, it is possible to reliably prevent deterioration of the aesthetic appearance of the timepiece dial due to glass fiber fraying over a long period of time. In addition, it is possible to reliably prevent the occurrence of adverse effects on the movement or the like due to frayed glass fibers, and the reliability of the timepiece can be made particularly excellent.
Moreover, the following effects are also acquired by providing a film | membrane on the surface of a glass fiber sheet. In other words, since the glass fiber sheet is composed of a large number of glass fibers, as it is, there are relatively large irregularities on the surface, and it is difficult to process printing, typesetting (planting), sticking time letters, etc. In addition, since it is difficult to sufficiently increase these adhesion, it was difficult to apply to a watch dial, but by providing a film on the surface of the glass fiber sheet as described above, Such processing can be easily and reliably performed.
Further, such a film (a film in which at least a part thereof has entered a part in the thickness direction of the glass fiber sheet) is provided on both surfaces of the glass fiber sheet. For this reason, even when a temperature change or the like occurs, it is effective to generate warpage of the timepiece dial due to a difference in thermal expansion coefficient between the constituent material of the film and the constituent material of the glass fiber sheet. Can be prevented. That is, the stability of the shape of the timepiece dial can be improved by having films on both sides of the glass fiber sheet.

  The thickness of the first region 23 varies depending on the thickness of the glass fiber sheet 2, the thickness of the second region 24, etc., but is preferably 0.1 to 140 μm, and is 0.2 to 80 μm. Is more preferable, and it is still more preferable that it is 0.5-30 micrometers. When the thickness of the first region 23 is a value within the above range, the adhesion between the glass fiber sheet 2 and the first film 3 is improved while sufficiently improving the aesthetic appearance of the timepiece dial 1. It can be made particularly excellent, and the durability (mechanical strength, shape stability, etc.) of the timepiece dial 1 can be made particularly excellent. On the other hand, if the thickness of the first region 23 is less than the lower limit value, the adhesion between the glass fiber sheet 2 and the first film 3 is sufficiently increased depending on the constituent material of the first film 3 and the like. It becomes difficult to increase, and it becomes difficult to sufficiently enhance the durability of the timepiece dial 1. On the other hand, when the thickness of the first region 23 exceeds the upper limit, the thickness of the third region 25 described later is small depending on the thickness of the glass fiber sheet 2, the thickness of the second region 24, and the like. Therefore, the aesthetic appearance of the timepiece dial 1 tends to be lowered.

  Moreover, although the thickness of the 2nd area | region 24 changes with the thickness of the glass fiber sheet 2, the thickness of the 1st area | region 23, etc., it is preferable that it is 0.1-140 micrometers, 0.2-80 micrometers. More preferably, it is more preferably 0.5 to 30 μm. When the thickness of the second region 24 is a value within the above range, the adhesion between the glass fiber sheet 2 and the second film 4 is improved while sufficiently improving the aesthetic appearance of the timepiece dial 1. It can be made particularly excellent, and the durability (mechanical strength, shape stability, etc.) of the timepiece dial 1 can be made particularly excellent. On the other hand, if the thickness of the second region 24 is less than the lower limit value, depending on the constituent material of the second film 4 and the like, sufficient adhesion between the glass fiber sheet 2 and the second film 4 can be obtained. It becomes difficult to increase, and it becomes difficult to sufficiently enhance the durability of the timepiece dial 1. On the other hand, when the thickness of the second region 24 exceeds the upper limit, the thickness of the third region 25 described later is small depending on the thickness of the glass fiber sheet 2, the thickness of the first region 23, and the like. Therefore, the aesthetic appearance of the timepiece dial 1 tends to be lowered.

  In addition to the first region 23 and the second region 24 as described above, the glass fiber sheet 2 includes the first film 3 and the second region 24 between the first region 23 and the second region 24. 2 has a third region (air layer) 25 in which the membrane 4 does not enter. In the third region 25, the glass fiber constituting the glass fiber sheet 2 is usually covered with an atmosphere such as air. Such an atmosphere generally has a refractive index (about 1.001) sufficiently smaller than the material constituting the glass fiber.

  In this way, the glass fiber sheet has a region (third region) in which the constituent material of the film does not enter in the thickness direction, so that the external light can be effectively irregularly reflected, etc. The aesthetic appearance of the dial can be made particularly excellent. On the other hand, if it does not have the 3rd field, irregular reflection of outside light, etc. cannot be performed effectively, and the outstanding aesthetic appearance which a glass fiber sheet has cannot be exhibited. More specifically, if the third region is not provided, the timepiece dial itself becomes too transparent, and when one side (main surface) side of the timepiece dial is viewed, The state on the opposite surface (main surface) side can be seen through the dial, and the aesthetic appearance of the glass fiber sheet timepiece dial is remarkably low. This is because the constituent materials of the first film 3 and the second film 4 generally have a sufficiently large refractive index as compared with a gas such as air, and usually the difference from the refractive index of the glass fiber. Since it has a small refractive index, it is thought that it is because the irregular reflection of the external light, etc. by a glass fiber will be prevented. In addition, for the purpose of preventing the above problems, it is conceivable to use a relatively large amount of colorant or the like as a constituent material of the timepiece dial, but in such a case, the light transmittance is significantly reduced, It cannot be applied to a solar clock or the like as described later. In addition, when a relatively large amount of colorant is used, the timepiece dial is not high-quality and has a poor aesthetic appearance.

  In particular, in the present invention, the glass fiber sheet has the first region and the second region together with the third region, so that the light transmittance in the first region and the second region is sufficient. While making it high, while reflecting light on the surface of the glass fiber in the third region, the outer surface of the first region (surface opposite to the surface facing the third region), the second The outer surface of the region (surface opposite to the surface facing the third region), the interface between the first region and the third region, or the interface between the second region and the third region, Light can be reflected and refracted suitably and uniformly. As a result, the aesthetic appearance of the timepiece dial can be made excellent while sufficiently improving the electromagnetic wave (radio wave, light) permeability of the timepiece dial as a whole.

  On the other hand, even if the third region is provided, the effect of the present invention cannot be obtained if the first region and / or the second region are not provided. That is, when the first region and / or the second region are not provided, there is no interface between the first region and the third region and no interface between the second region and the third region. For this reason, light cannot be reflected and refracted uniformly and uniformly, and the aesthetics of the timepiece dial is lowered.

  Although the thickness of the 3rd area | region 25 is not specifically limited, It is preferable that it is 5-280 micrometers, It is more preferable that it is 30-260 micrometers, It is further more preferable that it is 79-245 micrometers. When the thickness of the third region 25 is a value within the above range, the aesthetic appearance of the timepiece dial 1 is particularly excellent while the durability of the timepiece dial 1 is sufficiently excellent. be able to. On the other hand, if the thickness of the third region 25 is less than the lower limit, depending on the constituent material and thickness of the first film 3, the constituent material and thickness of the second film 4, etc. It may be difficult to make the aesthetic appearance of the dial 1 sufficiently excellent. On the other hand, when the thickness of the third region 25 exceeds the upper limit, depending on the thickness of the glass fiber sheet 2 and the like, the thickness of the first region 23 and the second region 24 may be sufficiently increased. It becomes difficult to sufficiently enhance the durability of the timepiece dial 1. Further, in the case where the thickness of the third region 25 exceeds the upper limit value, in order to increase the thickness of the first region 23 and the second region 24, the thickness of the glass fiber sheet 2 is increased. However, in such a case, the thickness of the timepiece dial 1 as a whole becomes large. For example, when applied to a timepiece as described later, it is disadvantageous for making the timepiece thin, and for the timepiece. The transmittance of the electromagnetic wave as the dial 1 is lowered, and it may be difficult to suitably apply to a solar timepiece, a radio timepiece, or the like.

[First film]
The 1st film | membrane 3 is provided in the 1st surface 21 vicinity of the glass fiber sheet 2, The part has entered in the glass fiber sheet 2 (1st area | region 23).
The first film 3 may be composed of any material, and may be any material as long as it has electromagnetic wave (light, radio wave) transparency, but is highly transparent (for example, visible light transmission). The material is preferably made of an organic polymer material such as various plastic materials. Thereby, the transparency of electromagnetic waves (radio waves, light) can be made particularly excellent while the aesthetic appearance of the timepiece dial 1 is sufficiently excellent. Further, the adhesion between the first film 3 and the glass fiber sheet 2 can be made particularly excellent, and the durability of the timepiece dial 1 can be made particularly excellent.

  Examples of the organic polymer material constituting the first film 3 include various thermoplastic resins and various thermosetting resins, such as polyethylene, polypropylene, ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer. Polyolefin such as (EVA), cyclic polyolefin, modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide (example: nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6 -12, nylon 6-66), polyimide, polyamideimide, polycarbonate (PC), poly- (4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS) resin , Acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), polybutylene terephthalate ( Polyesters such as PBT) and polycyclohexane terephthalate (PCT), polyethers, polyether ketones (PEK), polyether ether ketones (PEEK), polyether imides, polyacetals (POM), polyphenylene oxides, modified polyphenylene oxides, polysulfones, polys. Ether sulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride Other thermoplastic resins such as fluorinated resins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, transpolyisoprene, fluororubber, chlorinated polyethylene, and epoxy Resin, phenol resin, urea resin, melamine resin, unsaturated polyester, silicone resin, urethane resin, poly-para-xylylene, poly-monochloro-para-xylylene, Polypara-poly-para-xylylene, poly-monofluoro-para-xylylene, poly-monoethyl-para-xylylene, etc. Xylylene resins, etc., or copolymers, blends, polymer Etc., and singly or in combination of two or more of these (e.g., a blend resin, a polymer alloy or the like) can be used.

  It is preferable that at least a portion of the first film 3 entering the glass fiber sheet 2 is made of urethane resin among the above materials. When at least a portion of the first film 3 entering the glass fiber sheet 2 is mainly composed of a urethane resin, the aesthetic appearance of the timepiece dial 1 is sufficiently excellent, and electromagnetic waves ( The transmission of radio waves and light) can be made particularly excellent. Further, the adhesion between the first film 3 and the glass fiber sheet 2 can be made particularly excellent, and the durability of the timepiece dial 1 can be made particularly excellent.

  The first film 3 may be, for example, a stacked body having a plurality of layers, or a film whose composition changes sequentially in the thickness direction (gradient material). When the first film 3 has such a configuration, for example, the characteristics of a plurality of types of materials constituting the first film 3 can be more effectively exhibited. More specifically, for example, in the first film 3, a material constituting a part (first part) that enters the glass fiber sheet 2 and a part (second part) that does not enter the glass fiber sheet 2 are included. By selecting a combination with the constituent materials, the durability of the timepiece dial 1 (the stability of the shape, the mechanical strength, while the adhesion of the first film 3 to the glass fiber sheet 2 is particularly excellent) Etc.) can be made particularly excellent.

When the 1st film | membrane 3 is what has the above structures (laminated body and gradient material), for example, the area | region (1st site | part) which penetrates into the glass fiber sheet 2 was comprised with urethane type resin And at least one selected from the region (second portion) on the outer surface side than the region is selected from polycarbonate (PC), acrylic resin, and acrylonitrile-butadiene-styrene copolymer (ABS resin). It may be composed of a material containing. The effect mentioned above can be exhibited more notably that the 1st film | membrane 3 is comprised with such a material.
Polycarbonate is relatively inexpensive among various plastic materials, and can contribute to further reduction in production cost of the timepiece dial 1. Further, the acrylic resin has particularly excellent light resistance and chemical resistance, and can improve the durability of the timepiece dial 1 as a whole. The ABS resin has particularly excellent chemical resistance, and can further improve the durability of the timepiece dial 1 as a whole.

Note that the first film 3 may include components other than those described above. Examples of such components include plasticizers, antioxidants, colorants (including various color formers, pigments, dyes, fluorescent substances, phosphorescent substances, etc.), brighteners, fillers, and the like.
The refractive index (absolute refractive index) of the constituent material of the first film 3 is not particularly limited, but is preferably 1.35 to 1.7, and more preferably 1.45 to 1.6.

  The first film 3 may have a substantially uniform composition at each site, or may have a different composition depending on the site. For example, the first film 3 may have a base portion and a surface layer provided on the base portion. When the first film 3 has such a configuration, for example, the shape of the timepiece dial 1 as a whole, the stability of the shape, the mechanical strength, etc. are particularly excellent, and the first film 3 The adhesion to the glass fiber sheet 2 can be further improved.

  The thickness of the first film 3 is not particularly limited, but is preferably 50 to 300 μm, more preferably 100 to 280 μm, and further preferably 150 to 280 μm. When the thickness of the first film 3 is a value within the above range, the timepiece dial 1 is sufficiently excellent in the electromagnetic wave (radio wave, light) permeability of the timepiece dial 1 and has an aesthetic appearance. And durability can be made particularly excellent. Further, when the thickness of the first film 3 is a value within the above range, for example, in the timepiece dial 1, the first film 3 is a substrate that supports the glass fiber sheet 2 and the second film 4. The function as the (base) can be sufficiently exhibited. On the other hand, if the thickness of the first film 3 is less than the lower limit value, it is difficult to sufficiently improve the mechanical strength, shape stability, and the like of the timepiece dial 1. It may be difficult to make the dial 1 sufficiently durable. On the other hand, if the thickness of the first film 3 exceeds the upper limit, depending on the constituent material of the first film 3, it is difficult to make the aesthetic appearance of the timepiece dial 1 sufficiently excellent. There is a possibility. When the thickness of the first film 3 exceeds the upper limit, depending on the constituent material of the first film 3, the internal stress of the first film 3 increases, and the shape of the timepiece dial 1 is increased. May decrease the stability of

  Further, when the first film 3 has the first part and the second part as described above (for example, a laminate, a gradient material, etc.), the thickness of the first part is particularly limited. Although it is not, it is preferable that it is 1-125 micrometers, It is more preferable that it is 5-100 micrometers, It is further more preferable that it is 7-80 micrometers. The thickness of the second part is not particularly limited, but is preferably 49 to 240 μm, more preferably 85 to 220 μm, and still more preferably 95 to 210 μm. By satisfying such a condition, the above-described effects are exhibited more significantly.

  The first film 3 only needs to enter at least part of the glass fiber sheet 2, for example, even if substantially the entire thickness of the first film 3 enters the glass fiber sheet 2. Although it is good, in the structure of illustration, it has the part which has not entered into the fiberglass sheet 2. Thereby, processing, such as printing, typesetting (at the time of setting), sticking of a time character, can be easily and reliably performed on the surface side of the timepiece dial plate 1 on which the first film 3 is provided. In addition, this makes it possible to more effectively prevent the glass fiber from being exposed to the outer surface of the timepiece dial 1 over a long period of time, and as a result, the occurrence of inconvenience due to the fraying of the glass fiber. Can be prevented more effectively.

[Second film]
The 2nd film | membrane 4 is provided in the 2nd surface 22 vicinity of the glass fiber sheet 2, The part has entered into the glass fiber sheet 2 (2nd area | region 24).
The second film 4 may be made of any material, and may be any material as long as it has transparency of electromagnetic waves (light, radio waves), but is highly transparent (for example, visible light transmission). The material is preferably made of an organic polymer material such as various plastic materials. Thereby, the transparency of electromagnetic waves (radio waves, light) can be made particularly excellent while the aesthetic appearance of the timepiece dial 1 is sufficiently excellent. Further, the adhesion between the second film 4 and the glass fiber sheet 2 can be made particularly excellent, and the durability of the timepiece dial 1 can be made particularly excellent.

  Examples of the organic polymer material constituting the second film 4 include various thermoplastic resins and various thermosetting resins, such as polyethylene, polypropylene, ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer. Polyolefin such as (EVA), cyclic polyolefin, modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide (example: nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6 -12, nylon 6-66), polyimide, polyamideimide, polycarbonate (PC), poly- (4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS) resin , Acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), polybutylene terephthalate ( Polyesters such as PBT) and polycyclohexane terephthalate (PCT), polyethers, polyether ketones (PEK), polyether ether ketones (PEEK), polyether imides, polyacetals (POM), polyphenylene oxides, modified polyphenylene oxides, polysulfones, polys. Ether sulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride Other thermoplastic resins such as fluorinated resins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, transpolyisoprene, fluororubber, chlorinated polyethylene, and epoxy Resin, phenol resin, urea resin, melamine resin, unsaturated polyester, silicone resin, urethane resin, poly-para-xylylene, poly-monochloro-para-xylylene, Polypara-poly-para-xylylene, poly-monofluoro-para-xylylene, poly-monoethyl-para-xylylene, etc. Xylylene resins, etc., or copolymers, blends, polymer Etc., and singly or in combination of two or more of these (e.g., a blend resin, a polymer alloy or the like) can be used.

  It is preferable that at least a portion of the second film 4 entering the glass fiber sheet 2 is made of a urethane resin among the above materials. When at least a portion of the second film 4 entering the glass fiber sheet 2 is mainly composed of a urethane resin, the aesthetic appearance of the timepiece dial 1 is sufficiently excellent, and electromagnetic waves ( The transmission of radio waves and light) can be made particularly excellent. Further, the adhesion between the second film 4 and the glass fiber sheet 2 can be made particularly excellent, and the durability of the timepiece dial 1 can be made particularly excellent.

  The second film 4 may be, for example, a laminated body having a plurality of layers, or a film whose composition changes sequentially in the thickness direction (gradient material). When the second film 4 has such a configuration, for example, the characteristics of a plurality of types of materials constituting the second film 4 can be more effectively exhibited. More specifically, for example, in the second film 4, a material constituting a part (first part) that enters the glass fiber sheet 2 and a part (second part) that does not enter the glass fiber sheet 2 are included. By selecting the combination with the constituent materials, the durability of the timepiece dial 1 (the stability of the shape, the mechanical strength, while making the adhesion of the second film 4 to the glass fiber sheet 2 particularly excellent) Etc.) can be made particularly excellent.

When the 2nd film | membrane 4 is what has the above structures (laminated body and gradient material), for example, the area | region (1st site | part) which penetrates into the glass fiber sheet 2 was comprised with urethane type resin And at least one selected from the region (second portion) on the outer surface side than the region is selected from polycarbonate (PC), acrylic resin, and acrylonitrile-butadiene-styrene copolymer (ABS resin). It may be composed of a material containing. The effect mentioned above can be exhibited more notably that the 2nd film | membrane 4 is comprised with such a material.
Polycarbonate is relatively inexpensive among various plastic materials, and can contribute to further reduction in production cost of the timepiece dial 1. The acrylic resin is particularly excellent in light resistance and chemical resistance, and can improve the durability of the timepiece dial 1 as a whole. The ABS resin has particularly excellent chemical resistance, and can further improve the durability of the timepiece dial 1 as a whole.
Examples include plasticizers, antioxidants, colorants (including various color formers, pigments, dyes, fluorescent substances, phosphorescent substances, etc.), brighteners, fillers, and the like.
The refractive index (absolute refractive index) of the constituent material of the second film 4 is not particularly limited, but is preferably 1.35 to 1.7, and more preferably 1.45 to 1.6.

  The second film 4 may have a substantially uniform composition at each site, or may have a different composition depending on the site. For example, the second film 4 may have a base and a surface layer provided on the base. Since the second film 4 has such a configuration, for example, the shape of the timepiece dial 1 as a whole, the mechanical stability and the like of the shape of the second film 4 are particularly excellent. The adhesion to the glass fiber sheet 2 can be further improved.

  The second film 4 may contain components other than those described above. Further, the thickness of the second film 4 is not particularly limited, but is preferably 50 to 300 μm, more preferably 100 to 280 μm, and further preferably 150 to 280 μm. . When the thickness of the second film 4 is within the above range, the timepiece dial 1 is sufficiently excellent in the electromagnetic wave (radio wave, light) permeability of the timepiece dial 1 and the aesthetic appearance of the timepiece dial 1. And durability can be made particularly excellent. Further, when the thickness of the second film 4 is a value within the above range, for example, in the timepiece dial 1, the second film 4 is a substrate that supports the glass fiber sheet 2 and the first film 3. The function as the (base) can be sufficiently exhibited. On the other hand, if the thickness of the second film 4 is less than the lower limit value, it is difficult to make the mechanical strength, shape stability, etc. of the timepiece dial 1 sufficiently excellent. It may be difficult to make the dial 1 sufficiently durable. On the other hand, when the thickness of the second film 4 exceeds the upper limit value, it is difficult to make the aesthetic appearance of the timepiece dial 1 sufficiently excellent depending on the constituent material of the second film 4 and the like. There is a possibility. When the thickness of the second film 4 exceeds the upper limit, depending on the constituent material of the second film 4 and the like, the internal stress of the second film 4 increases, and the shape of the timepiece dial 1 is increased. May decrease the stability of

  In addition, when the second film 4 has the first part and the second part as described above (for example, a laminate, a gradient material, etc.), the thickness of the first part is particularly limited. Although it is not, it is preferable that it is 1-125 micrometers, It is more preferable that it is 5-100 micrometers, It is further more preferable that it is 7-80 micrometers. Moreover, the thickness of the second part is not particularly limited, but is preferably 40 to 240 μm, more preferably 50 to 220 μm, and further preferably 70 to 210 μm. By satisfying such a condition, the above-described effects are exhibited more significantly.

  At least a part of the second film 4 only needs to enter the glass fiber sheet 2. For example, even if almost the entire thickness of the second film 4 enters the glass fiber sheet 2. Although it is good, in the structure of illustration, it has the part which has not entered into the fiberglass sheet 2. Thereby, the dial surface becomes flat and the effect that it becomes easy to attach designs, such as a typesetting, printing, and painting, is acquired. In addition, this makes it possible to more effectively prevent the glass fiber from being exposed to the outer surface of the timepiece dial 1 over a long period of time, and as a result, the occurrence of inconvenience due to the fraying of the glass fiber. Can be prevented more effectively.

[Fray prevention member]
By the way, in general, a fiber sheet composed of fibers is prone to fiber fraying due to environmental changes, external forces, and the like. Accordingly, the glass fiber sheet used in the present invention is also prone to fraying in a normal state. As described above, in the present invention, the first film is provided on the first surface side that is one main surface of the glass fiber sheet, and the second film side is provided on the second surface side that is the other main surface. By providing the film, the timepiece dial has an excellent aesthetic appearance (aesthetics), but when the glass fiber frays as described above, the aesthetic appearance of the timepiece dial is impaired. . In addition, in the timepiece dial applied to a watch, if the glass fiber frays as described above occur, the frayed glass fibers may adversely affect the movement, etc., reducing the reliability of the watch. Become.

Therefore, in the present invention, the first film is disposed on the first surface side which is one main surface of the glass fiber sheet, and the second film is disposed on the second surface side which is the other main surface. The fraying prevention member is arranged so as to surround the outer peripheral surface (end surface) of the glass fiber sheet. Thereby, it is possible to prevent the glass fibers constituting the glass fiber sheet from being exposed, and to effectively prevent the glass fibers from fraying. As a result, the aesthetic appearance of the timepiece dial is improved. It can be held for a long period of time, and the reliability when the timepiece dial is applied to a timepiece can be improved.
And also in this embodiment, as shown in FIG. 1, the fraying prevention member 5 is arrange | positioned so that the outer peripheral surface of the glass fiber sheet 2 may be surrounded.

  The fraying prevention member 5 may be any material as long as it is disposed so as to surround the outer peripheral surface of the glass fiber sheet 2 (at least the portion corresponding to the third region 25 of the outer peripheral surface of the glass fiber sheet 2). It is preferable to cover the vicinity of the peripheral portion of the main surface of the first film 3 and the vicinity of the peripheral portion of the main surface of the second film 4 together with the outer peripheral surface of 2. As a result, fraying of the glass fiber can be more effectively prevented, an excellent aesthetic appearance can be maintained for a longer period of time, and the timepiece to which the timepiece dial 1 is applied is adversely affected. It can prevent more reliably. In the illustrated configuration, the protrusion 51 covers the vicinity of the peripheral portion of the main surface of the first film 3, and the protrusion 52 covers the vicinity of the peripheral portion of the main surface of the second film 4. As described above, by covering the first film 3 side and the second film side (both sides), the above-described effect is exhibited more significantly.

In the figure, the length of the protrusions 51 and 52 represented by L ₁ and L ₂ is preferably 10 to 500 μm, and more preferably 30 to 300 μm. When the length of the protrusions 51 and 52 is a value within the above range, glass fiber fraying can be reliably prevented over a longer period without impairing the aesthetic appearance (aesthetics) of the timepiece dial 1. it can.
The fraying prevention member 5 is not particularly limited, but is preferably colorless or silvery. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent. In particular, when the fray preventing member 5 is silver, when the timepiece dial 1 is incorporated in a timepiece, it enters the timepiece dial 1 and near its side surface (the outer peripheral surface of the glass fiber sheet 2). The reflected light can be emitted as glossy light (silver light) on the viewer side, and the aesthetic appearance (aesthetics) of the timepiece dial 1 can be made particularly excellent.

  Further, the fraying prevention member 5 may be, for example, a mirror-finished portion facing the glass fiber sheet. Thereby, when the timepiece dial 1 is incorporated in the timepiece, the light incident on the timepiece dial 1 and reflected near the side surface (the outer peripheral surface of the glass fiber sheet 2) is glossy on the viewer side. The light can be emitted as certain light, and the aesthetic appearance (aesthetics) of the timepiece dial 1 can be made particularly excellent.

Examples of the constituent material of the fray prevention member 5 include Fe, Cu, Zn, Ni, Ti, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, Ag, and the like. Nonmetallic materials such as metal materials such as alloys (for example, stainless steel, etc.) including at least one of them, ceramics, resin materials, stone materials, and the like are used, and one or two or more selected from these may be used in combination. Can do.
When the fraying prevention member 5 is made of a metal material (especially stainless steel) among the above materials, the aesthetic appearance (luxury feeling) of the timepiece dial 1 is particularly good due to the metallic luster unique to the material. It can be excellent. Further, when the fray preventing member 5 is made of the above-described material, the structural stability (shape stability) of the timepiece dial 1 is particularly excellent.

  Further, when the fraying prevention member 5 is made of a resin material among the above materials, the timepiece dial 1 can be reduced in weight and the appearance of the timepiece dial 1 is transparent. Can give a cleaner impression. Further, when the fraying prevention member 5 is made of a resin material, at least a part of the fraying prevention member 5 can enter the glass fiber sheet 2 (third region 25) relatively easily. Thereby, fraying of glass fiber can be prevented more reliably. Further, a part of the fraying prevention member 5 made of a resin material enters a part of the glass fiber sheet 2 (third region 25), so that a part of the fraying prevention member 5 in the third region 25 is obtained. It is possible to cause the area where the intrusion has entered to function in the same manner as the first area 23, and to make the aesthetic appearance of the timepiece dial 1 particularly excellent. Moreover, when the fraying prevention member 5 is comprised with the resin material, the fraying prevention member 5 is comprised with the material similar to the 1st film | membrane 3 (part which penetrates into the glass fiber sheet 2 of the 1st film | membrane 3). It is preferred that

In addition, the fraying prevention member 5 is made of a metal material (particularly stainless steel) and a resin material (for example, a metal part made of a metal material and a surface of the metal part facing the glass fiber sheet 2. And the like, the above-described effects are synergistically exhibited.
The thickness of the fray prevention member 5 as represented in the figure _{L 3} (thickness at the main surface direction of the timepiece dial 1) is not particularly limited, but is preferably 20 to 100 [mu] m, in 30~80μm More preferably. When the thickness of the fray preventing member 5 is a value within the above range, fraying of the glass fibers of the glass fiber sheet 2 can be more effectively prevented while preventing the timepiece dial from becoming large. .

[Aperture]
An opening 7 is provided in the vicinity of the central portion of the timepiece dial 1 in the main surface direction.
The opening 7 is provided for passing a shaft supporting a hand (hour hand, minute hand, second hand, etc.).
The opening 7 is usually provided so that the shape when viewed in plan is substantially circular. When the shape of the opening 7 is substantially circular, the diameter of the opening 7 is usually about 0.8 to 1.8 mm.

The thickness of the timepiece dial 1 as described above is not particularly limited, but is preferably 300 to 700 μm, more preferably 450 to 700 μm, still more preferably 480 to 600 μm, and 480 to 700 μm. Most preferably, it is 520 μm. When the thickness of the timepiece dial 1 is a value within the above range, the aesthetic appearance and durability of the timepiece dial 1 are particularly excellent while sufficiently improving the transmission of electromagnetic waves (radio waves and light). Even when a watch is manufactured, the watch can be manufactured without reducing the degree of freedom of the watch thickness.
The light transmittance of the timepiece dial 1 is preferably 20% or more, more preferably 22 to 50%, and even more preferably 25 to 40%.

As described above, the timepiece dial 1 is excellent in aesthetic appearance and excellent in electromagnetic wave permeability. For this reason, the timepiece dial 1 can be suitably applied to a radio timepiece, a solar timepiece (a timepiece having a built-in solar battery), a solar timepiece, and the like.
The timepiece dial 1 may be made of a material containing a colorant. As described above, the timepiece dial 1 includes the glass fiber sheet 2. The glass material constituting the glass fiber itself is essentially colorless, and the glass fiber sheet made of such a glass material exhibits a white color (glossy). Therefore, the timepiece dial 1 having a wide variety of colors can be provided by using the colorant. Such a colorant may be included in any part of the timepiece dial 1. For example, the colorant may be included as a constituent of the glass fiber sheet 2. It may be included as a constituent component of the film 3, may be included as a constituent component of the second film 4, or may be included as a constituent component of the fray preventing member 5.

  In the above description, the timepiece dial has been described as being composed of a glass fiber sheet, a first film, a second film, and a fraying prevention member. In addition to these, a further configuration may be provided. For example, the timepiece dial of the present invention may have a coat layer on the second film (on the side opposite to the surface facing the first film). Thereby, for example, various properties such as weather resistance, water resistance, oil resistance, scratch resistance, abrasion resistance, and discoloration resistance as the entire timepiece dial can be improved. As a result, the durability as a timepiece dial can be made particularly excellent. Such a coat layer may be provided, for example, on the first film (on the surface opposite to the surface facing the second film) or on the fraying prevention member.

The timepiece dial 1 as described above, for example, pressurizes or heats the first film 3, the glass fiber sheet 2, and the second film 4 in this order. These can be manufactured by joining them together by heating while applying pressure, etc., and then installing (for example, crimping) the fraying prevention member 5 on the peripheral edge of the glass fiber sheet 2. . In the case where the fraying prevention member has a protrusion as described above, a cylindrical member is prepared at the time of manufacturing the timepiece dial, and after contacting the glass fiber sheet or the like, the cylindrical member You may form by bending the edge vicinity. Moreover, after joining the glass fiber sheet 2 and one film | membrane (the 1st film | membrane 3 or the 2nd film | membrane 4), on the opposite side to the surface side where the said film | membrane of the glass fiber sheet 2 was joined, the other side A film (second film 4 or first film 3) may be bonded. It should be noted that the thicknesses of the first region 23 and the second region 24 can be set to desired values by adjusting, for example, the pressurizing pressure, the heating temperature, and the like.
In addition, when manufacturing by the above methods, it is preferable that the 1st film | membrane 3 used for manufacture is a thing whose rigidity is higher than the glass fiber sheet 2. FIG. Thereby, the stability of the shape of the timepiece dial 1 can be made particularly excellent. Moreover, when using the laminated body as mentioned above as the 1st film | membrane 3, the 2nd site | part (2nd layer) of the 1st film | membrane 3 is a thing whose rigidity is higher than the glass fiber sheet 2. preferable. Thereby, the stability of the shape of the timepiece dial 1 can be made particularly excellent while sufficiently exhibiting the above-described effects.
Moreover, when manufacturing by the above methods, it is preferable that the 2nd film | membrane 4 used for manufacture is a thing whose rigidity is higher than the glass fiber sheet 2. FIG. Thereby, the stability of the shape of the timepiece dial 1 can be made particularly excellent. Moreover, when using a laminated body as mentioned above as the 2nd film | membrane 4, the 2nd site | part (2nd layer) of the 2nd film | membrane 4 is a thing with higher rigidity than the glass fiber sheet 2. preferable. Thereby, the stability of the shape of the timepiece dial 1 can be made particularly excellent while sufficiently exhibiting the above-described effects.
Moreover, the timepiece dial 1 is manufactured by, for example, bonding the first film and the second film to the glass fiber sheet after the fraying prevention member 5 is installed on the peripheral portion of the glass fiber sheet 2. You can also.

Next, a second embodiment of the timepiece dial of the present invention will be described.
FIG. 2 is a cross-sectional view showing a second embodiment of the timepiece dial of the present invention.
Hereinafter, the timepiece dial according to the second embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.
As shown in FIG. 2, the timepiece dial 1 of the present embodiment has an opening 7 in the vicinity of the central portion in the main surface direction, and includes a glass fiber sheet 2, a first film 3, 2, a fraying prevention member (first fraying prevention member) 5 disposed so as to surround the outer peripheral surface (end surface) of the glass fiber sheet 2, and an inner peripheral surface of the opening 7. A fraying prevention member (second fraying prevention member) 6 is provided. That is, the timepiece dial 1 of the present embodiment is the same as that of the first embodiment described above except that the fraying prevention member (second fraying prevention member) 6 is arranged so as to cover the inner peripheral surface of the opening 7. This is the same as the timepiece dial 1. Therefore, the fraying prevention member (second fraying prevention member) 6 will be described below.

[Fray prevention member (second fray prevention member)]
The fraying prevention member (second fraying prevention member) 6 is disposed so as to cover the inner peripheral surface of the opening 7.
As described above, the opening 7 is provided for passing a shaft for supporting a hand (hour hand, minute hand, second hand, etc.). The opening 7 is usually a relatively small size. However, in a timepiece having a timepiece dial, a shaft that supports a hand driven by a movement is inserted, so that if the glass fiber frays in the vicinity of the opening 7, the timepiece is greatly affected. there is a possibility. Therefore, the reliability when applied to the timepiece is further improved by providing the fraying prevention member (second fraying prevention member) 6 disposed so as to cover the inner peripheral surface of the opening 7 as in the present embodiment. Can be increased. Moreover, by providing the fraying prevention member (second fraying prevention member) 6 together with the fraying prevention member (first fraying prevention member) 5, the aesthetic appearance of the timepiece dial 1 is further improved. Shape stability, durability and the like are also particularly excellent.

  The fraying prevention member 6 is arranged so as to surround the inner peripheral surface of the opening 7 (at least a portion of the inner peripheral surface of the opening 7 corresponding to the third region 25 of the glass fiber sheet 2). However, it covers a part of the main surface of the first film 3 near the opening 7 and a part of the main surface of the second film 4 near the opening 7 together with the inner peripheral surface of the opening 7. Preferably there is. As a result, fraying of the glass fiber can be more effectively prevented, an excellent aesthetic appearance can be maintained for a longer period of time, and the timepiece to which the timepiece dial 1 is applied is adversely affected. It can prevent more reliably. In the illustrated configuration, the protrusion 61 covers a part of the main surface of the first film 3 near the opening 7, and the protrusion 52 covers a part of the main surface of the second film 4 near the opening 7. ing. As described above, by covering the first film 3 side and the second film side (both sides), the above-described effect is exhibited more significantly.

In the figure, the length of the protrusions 61 and 62 represented by L ₄ and L ₅ is preferably 10 to 500 μm, and more preferably 30 to 300 μm. When the length of the protrusions 61 and 62 is a value within the above range, glass fiber fraying can be reliably prevented over a longer period without impairing the aesthetic appearance (aesthetics) of the timepiece dial 1. it can.
The fraying prevention member 6 is not particularly limited, but is preferably colorless or silvery. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent. In particular, when the fray preventing member 6 is silver, when the timepiece dial 1 is incorporated in a timepiece, the light incident on the timepiece dial 1 and reflected near the inner peripheral surface of the opening 7 is reflected. Further, it can be emitted as glossy light (silver light) on the observer side, and the aesthetic appearance (aesthetics) of the timepiece dial 1 can be made particularly excellent.

  Further, the fraying prevention member 6 may be, for example, a mirror-finished portion facing the glass fiber sheet. Thereby, when the timepiece dial 1 is incorporated in the timepiece, the light incident on the timepiece dial 1 and reflected near the inner peripheral surface of the opening 7 is emitted as glossy light on the viewer side. The aesthetic appearance (aesthetics) of the timepiece dial 1 can be made particularly excellent.

  As a constituent material of the fray prevention member 6, for example, Fe, Cu, Zn, Ni, Ti, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, Ag, and these Nonmetallic materials such as metal materials such as alloys (for example, stainless steel, etc.) including at least one of them, ceramics, resin materials, stone materials, and the like are used, and one or two or more selected from these may be used in combination. Can do.

  When the fray prevention member 6 is made of a metal material (especially stainless steel) among the above materials, the aesthetic appearance (luxury feeling) of the timepiece dial 1 is particularly good due to the metallic luster unique to the material. It can be excellent. Further, when the fraying prevention member 6 is made of the material as described above, the structural stability (shape stability) of the timepiece dial 1 is particularly excellent.

  Further, when the fray preventing member 6 is made of a resin material among the above materials, the timepiece dial 1 can be reduced in weight and the appearance of the timepiece dial 1 can be transparent. Can give a cleaner impression. Moreover, when the fraying prevention member 6 is comprised with the resin material, at least one part can be penetrated into the glass fiber sheet 2 (3rd area | region 25) comparatively easily. Thereby, fraying of glass fiber can be prevented more reliably. Further, a part of the fraying prevention member 6 made of a resin material enters a part of the glass fiber sheet 2 (third region 25), so that a part of the fraying prevention member 6 in the third region 25 is obtained. It is possible to cause the area where the intrusion has entered to function in the same manner as the first area 23, and to make the aesthetic appearance of the timepiece dial 1 particularly excellent. Moreover, when the fraying prevention member 6 is comprised with the resin material, the fraying prevention member 6 is comprised with the material similar to the 1st film | membrane 3 (part which penetrates into the glass fiber sheet 2 of the 1st film | membrane 3). It is preferred that

Further, the fraying prevention member 6 is made of a metal material (particularly stainless steel) and a resin material (for example, a metal part made of a metal material, and a surface facing the glass fiber sheet 2 of the metal part) And the like, the above-described effects are synergistically exhibited.
The thickness of the fray preventing member 6 represented in the figure _{L 6} (thickness at the main surface direction of the timepiece dial 1) is not particularly limited, but is preferably 20 to 100 [mu] m, in 30~80μm More preferably. When the thickness of the fray preventing member 6 is a value within the above range, fraying of the glass fibers of the glass fiber sheet 2 can be more effectively prevented while preventing the timepiece dial from becoming large. .

<Clock>
Next, the timepiece of the present invention provided with the timepiece dial of the present invention as described above will be described.
The timepiece of the present invention includes the timepiece dial of the present invention as described above. As described above, the timepiece dial of the present invention is excellent in light transmission (electromagnetic wave transmission) and decoration (aesthetic appearance). For this reason, the timepiece of the present invention provided with such a timepiece dial can sufficiently satisfy the requirements required as a solar timepiece or a radio timepiece. As a part other than the timepiece dial (the timepiece dial of the present invention) that constitutes the timepiece of the present invention, known parts can be used. Hereinafter, an example of the configuration of the timepiece of the present invention will be described. explain.

FIG. 3 is a cross-sectional view showing a preferred embodiment of the timepiece (watch) of the present invention.
As shown in FIG. 3, the wristwatch (portable watch) 100 according to the present embodiment includes a case (case) 72, a back cover 73, a bezel (edge) 74, and a glass plate (cover glass) 75. . Further, in the case 72, the timepiece dial 1 of the present invention as described above, the holding member 60 for holding the timepiece dial 1, the solar cell 9, and the movement 71 are housed. A needle (pointer) (not shown) is accommodated.
The glass plate 75 is usually made of transparent glass or sapphire having high transparency. Thereby, while being able to fully exhibit the aesthetics of the timepiece dial 1 of the present invention, a sufficient amount of light can be incident on the solar cell 9.

  The holding member 60 has a function of holding the timepiece dial 1 by coming into contact with the vicinity of the periphery of the timepiece dial 1 (the vicinity of the end of the upper surface and the peripheral surface). By holding the timepiece dial 1 in this manner, the timepiece dial 1 can be reliably held, and the timepiece dial 1 is provided with the fray preventing member 5 on the appearance of the timepiece 100. It is effectively prevented that the vicinity of the peripheral edge is visually recognized. As a result, the aesthetic appearance of the timepiece dial 1 in the timepiece 100 is sufficiently excellent. Even when the timepiece dial 1 is provided with the fraying prevention member (second fraying prevention member) 6 as described in the second embodiment described above, it is usually the same as described above by the hands. It is effectively prevented that the vicinity of the opening 7 (fray preventing member 6) of the timepiece dial 1 is visually recognized. As a result, the aesthetic appearance of the timepiece dial 1 in the timepiece 100 is sufficiently excellent.

The movement 71 uses the electromotive force of the solar cell 9 to drive the pointer.
Although omitted in FIG. 3, in the movement 71, for example, an electric double layer capacitor for storing the electromotive force of the solar cell 9, a lithium ion secondary battery, a crystal oscillator as a time reference source, and a crystal vibration A semiconductor integrated circuit that generates a driving pulse for driving a clock based on the oscillation frequency of the child, a step motor that drives the pointer every second in response to this driving pulse, and a wheel that transmits the movement of the step motor to the pointer A row mechanism is provided.
The movement 71 includes a radio wave receiving antenna (not shown). And it has the function to perform time adjustment etc. using the received electromagnetic wave.

The solar cell 9 has a function of converting light energy into electric energy. The electric energy converted by the solar cell 9 is used for driving the movement.
In the solar cell 9, for example, a p-type impurity and an n-type impurity are selectively introduced into a non-single-crystal silicon thin film, and a p-type non-single-crystal silicon thin film and an n-type non-single-crystal silicon thin film It has a pin structure provided with an i-type non-single-crystal silicon thin film with a low impurity concentration in between.

A winding stem pipe 76 is fitted and fixed to the barrel 72, and a shaft 771 of a crown 77 is rotatably inserted into the winding stem pipe 76.
The body 72 and the bezel 74 are fixed by a plastic packing 78, and the bezel 74 and the glass plate 75 are fixed by a plastic packing 79.
Further, a back cover 73 is fitted (or screwed) to the barrel 72, and a ring-shaped rubber packing (back cover packing) 82 is inserted in a compressed state in these joint portions (seal portions) 83. Has been. With this configuration, the seal portion 83 is liquid-tightly sealed, and a waterproof function is obtained.

  A groove 772 is formed on the outer periphery of the shaft 771 of the crown 77, and a ring-shaped rubber packing (crown packing) 81 is fitted in the groove 772. The rubber packing 81 is in close contact with the inner peripheral surface of the winding stem pipe 76 and is compressed between the inner peripheral surface and the inner surface of the groove 772. With this configuration, the space between the crown 77 and the winding stem pipe 76 is liquid-tightly sealed, and a waterproof function is obtained. When the crown 77 is rotated, the rubber packing 81 rotates together with the shaft portion 771 and slides in the circumferential direction while being in close contact with the inner peripheral surface of the winding stem pipe 76.

  In the above description, a wristwatch (portable clock) as a solar radio timepiece has been described as an example of a clock. Can be applied as well. Further, the present invention can be applied to any timepiece such as a solar timepiece excluding a solar radio timepiece and a radio timepiece excluding a solar radio timepiece.

The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above.
For example, in the timepiece dial and timepiece of the present invention, the configuration of each part can be replaced with any configuration that exhibits the same function, and any configuration can be added.
In the illustrated embodiment, the fraying prevention member (the first fraying prevention member, the second fraying prevention member) has been described as having a protruding portion protruding on the first film and the second film. Such a protrusion may not be provided. In addition, the fraying prevention member may have a protruding portion only on one surface side (on the first film or the second film). With such a configuration, the timepiece dial can be manufactured more easily.

Further, the fraying prevention member may be, for example, a member provided so as to cover the outer peripheral surface (end surface) of the glass fiber sheet 2 and the entire first surface, that is, a dish-shaped member.
Moreover, the fraying prevention member may be separable from, for example, a laminated body (joined body) of the first film, the glass fiber sheet, and the second film.
In the illustrated embodiment, both the first film and the second film have been described as entering only part of the thickness direction into the glass fiber sheet. The whole of the membrane may enter the glass fiber sheet.
The glass fiber sheet may have a region other than the first region, the second region, and the third region as described above.
Moreover, in embodiment mentioned above, although 3rd area | region demonstrated as what was provided in the whole surface direction (main surface direction) of a glass fiber sheet, it provided in at least one part of the surface direction of a glass fiber sheet. What is necessary is just to be provided, and it does not need to be provided in the whole surface (the whole main surface) of a glass fiber sheet. In other words, for example, the glass fiber sheet may have a region in which the first film and / or the second film enter the entire thickness direction in a part of the surface direction.

Next, specific examples of the present invention will be described.
1. Manufacture of timepiece dial (Example 1)
A timepiece dial was manufactured by the following method.
First, a glass fiber sheet composed of glass fibers, a first film, and a second film were prepared. The prepared glass fiber sheet, the first film, and the second film were all 42 cm long by 30 cm wide.

[Glass fiber sheet]
The glass fiber sheet was composed of a woven structure in which a fiber bundle formed by bundling about 200 glass fibers was woven in a plain weave.
The glass fiber which comprises a glass fiber sheet was comprised with soda glass (refractive index (absolute refractive index): 1.56), and the thickness was 6 micrometers. Moreover, the thickness of the glass fiber sheet was 200 μm, and the surface density was 220 g / m ² .

[First film]
The first film is composed of a first part (first layer) composed of urethane resin (urethane adhesive) (refractive index (absolute refractive index): 1.54) and polycarbonate (refractive index (absolute Refractive index): manufactured as a laminate having a second part (second layer) composed of 1.58). The thickness (total thickness) of the first film was 150 μm, the thickness of the first part was 10 μm, and the thickness of the second part was 140 μm. Further, the visible light transmittance of the first film was 90% or more. Further, the second portion (second layer) was higher in rigidity than the glass fiber sheet, and the rigidity of the first film as a whole was higher than the rigidity of the glass fiber sheet.

[Second film]
The second film is composed of a first part (first layer) composed of urethane resin (urethane adhesive) (refractive index (absolute refractive index): 1.54) and polycarbonate (refractive index (absolute Refractive index): manufactured as a laminate having a second part (second layer) composed of 1.58). The thickness (total thickness) of the second film was 150 μm, the thickness of the first part was 10 μm, and the thickness of the second part was 140 μm. Further, the visible light transmittance of the second film was 90% or more. Further, the second part (second layer) was higher in rigidity than the above glass fiber sheet, and the rigidity of the entire second film was also higher than the rigidity of the glass fiber sheet.

[Joining of first film, glass fiber sheet, and second film]
Next, the above-described first film, glass fiber sheet, and second film were superposed in this order on a flat surface. At this time, the first film was arranged so that the first part was in contact with the glass fiber sheet. Moreover, the 2nd film | membrane was arrange | positioned so that a 1st site | part may contact a glass fiber sheet.

  Next, what laminated | stacked the 1st film | membrane, the glass fiber sheet | seat, and the 2nd film | membrane was pressed by the pressure: 0.5 Mpa in the direction perpendicular | vertical to these surface directions. This pressing was performed at room temperature and no heating was performed. Thereby, a part of the first film (a part of the first part) enters the inside of the glass fiber sheet to form the first region, and a part of the second film (a part of the first part). Part) enters the inside of the glass fiber sheet to form a second region, and a joined body of the first film, the glass fiber sheet, and the second film (sheet-like joined body of 42 cm in length × 30 cm in width). Got. The formed first region had a thickness of 5 μm, and the second region had a thickness of 5 μm. Moreover, the thickness of the 3rd area | region where neither the 1st film | membrane and the 2nd film | membrane entered the glass fiber sheet was 190 micrometers.

[Punching molding]
Next, a sheet-like joined body (42 cm long × 30 cm wide) of the first film, the glass fiber sheet, and the second film is punched and formed in the center portion corresponding to the timepiece dial. A large number of punched bodies having a substantially elliptical shape having a portion were obtained. The obtained punched body had a length in the minor axis direction of 40 mm and a length in the major axis direction of 55 mm. Moreover, the diameter of the opening part was 1.4 mm.

[Installation of anti-fraying member]
Next, a watch dial as shown in FIG. 1 was obtained by attaching a fray-preventing member made of stainless steel to the outer periphery of the punched body obtained as described above.
As a fraying prevention member, the shape of the inner peripheral surface has a substantially elliptical shape corresponding to the outer peripheral surface of the punched molded body (length in the minor axis direction: 40 mm, length in the major axis direction: 55 mm), A shape having protrusions protruding inward of the cylinder at the upper part and the lower part thereof and mirror-finished by buffing was used. The thickness _{L 3} of the fray preventing member was 40 [mu] m. The lengths L ₁ and L ₂ of the protrusions on the first film side and the second film side were 50 μm and 50 μm, respectively.
By mounting the fraying prevention member, the entire outer peripheral surface of the punched body is in close contact with the inner peripheral surface of the fraying prevention member, and the protrusions provided on the lower side and the upper side are the first film and the second film, respectively. A watch dial closely adhered to the membrane was obtained.

(Example 2)
The fraying prevention member is the same as in Example 1 except that a metal part made of stainless steel is provided with a resin part made of urethane resin (urethane adhesive) on the inner peripheral surface of the metal part. A dial for a watch was manufactured. In addition, as a metal part, the thing similar to the fraying prevention member used in the said Example 1 was used.

(Example 3)
First, many punched bodies were manufactured in the same manner as in Example 1.
Next, the first fraying prevention member made of stainless steel is attached to the outer periphery of the punched body obtained, and further, the first fraying prevention made of stainless steel is provided on the inner periphery of the punched body (inner periphery of the opening). By attaching the members, a timepiece dial as shown in FIG. 2 was obtained.

As the first fraying prevention member, a cylindrical shape whose inner peripheral surface has a substantially elliptical shape (length in the minor axis direction: 40 mm, length in the major axis direction: 55 mm) corresponding to the outer circumferential surface of the stamped molded body. The shape which has the protrusion part which protruded inside the cylinder at the upper part and the lower part, and made the mirror surface process by buffing was used. The thickness L ₃ of the first fraying prevention member was 40 μm. The lengths L ₁ and L ₂ of the protrusions on the first film side and the second film side were 50 μm and 50 μm, respectively.

Further, as the second fraying prevention member, the outer peripheral surface has a cylindrical shape (diameter: 1.4 mm) corresponding to the inner peripheral surface (inner peripheral surface of the opening) of the punched molded body, The upper part and the lower part had a shape having protrusions protruding outward from the cylinder, and mirror-finished by buffing was used. The thickness L ₆ of the second fraying prevention member was 40 μm. The lengths L ₄ and L ₅ of the protrusions on the first film side and the second film side were 50 μm and 50 μm, respectively.

  By mounting the first fraying prevention member and the second fraying prevention member, the entire outer peripheral surface of the punched body is in close contact with the inner peripheral surface of the first fraying prevention member, and the lower side of the first fraying prevention member The protrusions provided on the upper side are in close contact with the first film and the second film, respectively, and the entire inner peripheral surface (inner peripheral surface of the opening) of the punched body is the second fraying prevention member. Thus, a timepiece dial was obtained in which the protrusions provided on the lower side and the upper side of the second fray prevention member were in close contact with the first film and the second film, respectively.

Example 4
As the first fraying prevention member, a member having a resin part made of urethane resin (urethane adhesive) on the inner peripheral surface of a metal part made of stainless steel is used. As in Example 1 except that a metal part made of stainless steel is provided with a resin part made of urethane resin (urethane adhesive) on the outer peripheral surface of the metal part. A dial was produced. In addition, as a metal part which comprises a 1st fraying prevention member and a metal part which comprises a 2nd fraying prevention member, respectively, the 1st fraying prevention member used in the said Example 3, and a 2nd fraying prevention member, respectively. The same was used.

(Comparative Example 1)
The same as in Example 1 except that the punched molded body obtained by punching the glass fiber sheet without being covered with the first film and the second film was used as it is as a timepiece dial. A watch dial was manufactured. That is, in this comparative example, the glass fiber sheet punched into a predetermined shape was used as it is as a timepiece dial.

(Comparative Example 2)
A watch dial was manufactured in the same manner as in Example 1 except that a punched body obtained by punching a glass fiber sheet without using the first film and the second film was used. . That is, in this comparative example, the timepiece dial was manufactured as a glass fiber sheet and a fraying prevention member.

(Comparative Example 3)
A watch dial was manufactured in the same manner as in Example 1 except that a joined body of the glass fiber sheet and the second film was produced without providing the first membrane, and this joined body was stamped and formed. . That is, in this comparative example, the timepiece dial was manufactured as a glass fiber sheet, a second film, and a fraying prevention member.

(Comparative Example 4)
A watch dial was manufactured in the same manner as in Example 1 except that a joined body of the glass fiber sheet and the first membrane was produced without providing the second membrane, and this joined body was stamped and formed. . That is, in this comparative example, the timepiece dial was manufactured as a glass fiber sheet, a first film, and a fraying prevention member.

(Comparative Example 5)
Except that the stamped molded body obtained by stamping and molding the joined body of the first film, the glass fiber sheet, and the second film was used as it is as a timepiece dial, the same as in Example 1 above. A watch dial was manufactured. That is, in this comparative example, the timepiece dial was manufactured as a glass fiber sheet, a first film, and a second film.

(Comparative Example 6)
First, a glass fiber sheet similar to that used in Example 1 was prepared.
Next, this glass fiber sheet was impregnated with a urethane resin solution (solvent: thinner). Thereafter, the solvent was removed from the impregnated solution to obtain a plate-like member in which the voids of the glass fiber sheet were substantially completely filled with the urethane resin. Thereafter, this plate-like member was stamped and molded in the same manner as in Example 1 to obtain a timepiece dial.

(Comparative Example 7)
A first film (thickness: 150 μm) composed of a laminate of polycarbonate and polyethylene terephthalate; a second film (thickness: 150 μm) composed of a laminate of polycarbonate and polyethylene terephthalate; A glass fiber sheet similar to that used in Example 1 was prepared.
An adhesive was applied to one surface of the first film, and then a glass fiber sheet was placed on this surface, and the adhesive was solidified in this state.

Thereafter, an adhesive was applied to one surface of the second film, and then a glass fiber sheet having the first film bonded thereto was placed on this surface, and in this state, the adhesive was solidified. Under the present circumstances, the 2nd film | membrane was adhere | attached on the surface side opposite to the surface where the 1st film | membrane of the glass fiber sheet was adhere | attached.
In the joined body (adhesive body) thus obtained, the adhesive was applied only to the surface of the glass fiber sheet, and did not enter the inside of the glass fiber sheet.

Thereafter, the joined body (adhesive body) is stamped and formed in the same manner as in Example 1, and then a fraying prevention member is mounted in the vicinity of the peripheral edge of the glass fiber sheet in the same manner as in Example 1. A dial was obtained.
Table 1 shows the configuration of the timepiece dial and the conditions in the joining process and the fraying prevention member mounting process for each example and each comparative example. In Table 1, polycarbonate is PC, urethane resin is PU, stainless steel is SUS, and polyethylene terephthalate is PET.

2. Evaluation on fraying About each timepiece dial of each example and each comparative example, fraying was evaluated by the following method.
That is, the outer peripheral surface and the inner peripheral surface of the dial-shaped article were wiped with a cloth similar to that in a normal scraping process with a wipe, and rubbed 20 times to measure fiber fraying and evaluated according to the following four criteria. . It can be said that the smaller the fraying amount, the more resistant to fraying.
A: No fraying occurs.
○: 1 to 3 frays.
Δ: 4-8 frays.
X: 9 or more fraying.

3. Shape Stability Evaluation With respect to each timepiece dial of each of the above Examples and Comparative Examples, the shape stability was evaluated by the following method.
That is, for the timepiece dial manufactured in each example and each comparative example, a part (fixed part) 5 mm from one end in the long axis direction is fixed, and a position 50 mm from the fixed part (the other in the long axis direction) The amount of deflection (the amount of deflection due to its own weight) was measured and evaluated according to the following four criteria. It can be said that the smaller the amount of deflection, the better the shape stability.
A: Deflection amount is less than 1 μm.
○: Deflection amount is 1 μm or more and less than 2 μm.
Δ: Deflection amount of 2 μm or more and less than 5 μm.
X: Deflection amount is 5 μm or more.

4). Evaluation of Adhesiveness of Membrane (First Membrane, Second Membrane) For each timepiece dial manufactured in each of the above Examples and Comparative Examples, two types of tests as shown below were conducted to obtain a membrane (first Of the second film and the second film).
4-1. Bending test For each timepiece dial, using a steel bar with a diameter of 4 mm as a fulcrum, bending the watch dial 90 degrees with respect to the center of the timepiece dial, the appearance of the timepiece dial was visually observed, These appearances were evaluated according to the following four criteria. Bending was performed in both compression / tension directions.
A: No floating or peeling of the film is observed.
○: Floating film is hardly observed.
(Triangle | delta): The float of a film | membrane is recognized clearly.
X: The crack of a film | membrane and peeling are recognized clearly.

4-2. Thermal cycle test Each timepiece dial was subjected to the following thermal cycle test.
First, the watch dial is placed in a 20 ° C. environment for 1.5 hours, then in a 60 ° C. environment for 2 hours, then in a 20 ° C. environment for 1.5 hours, and then in a −20 ° C. environment. It was left to stand for 3 hours. Thereafter, the environmental temperature was returned again to 20 ° C., which was set as one cycle (8 hours), and this cycle was repeated three times in total (24 hours in total).

Thereafter, the appearance of the timepiece dial was visually observed, and the appearance was evaluated according to the following four-stage criteria.
(Double-circle): The float of a film | membrane, peeling, and a deformation | transformation of the timepiece dial are not recognized at all.
○: Floating film and deformation of watch dial are hardly recognized.
(Triangle | delta): The float of a film | membrane is recognized clearly.
X: The crack of a film | membrane and peeling are recognized clearly. Or, the deformation of the timepiece dial is clearly recognized.

5. Drop test Each timepiece dial manufactured in each of the above examples and each comparative example, the timepiece dial after being repeatedly dropped 10 times onto a stainless steel 10 cm thick block from a height of 3 m. The external appearance was visually observed, and the external appearance was evaluated according to the following three-stage criteria.
A: No glass fiber fraying is observed.
○: Fraying of glass fiber is hardly observed.
Δ: Glass fiber fraying and fluff are slightly observed.
X: Fraying of glass fiber is noticeable.

6). Evaluation about printing About each timepiece dial plate manufactured in each of the above-mentioned examples and comparative examples, printing is performed on the surface (the surface side on which the second film is formed for those provided with the second film). And evaluated according to the following four-stage criteria.
A: Good printing can be performed, and there is no problem such as fading in the printed part.
○: Printing is possible, and there is almost no problem such as blurring in the printing section.
(Triangle | delta): The adhesion defect slightly recognized by the formed printing part.
X: Clear adhesion failure is recognized in the formed printed part.

7). Evaluation of sticking of typesetting For each timepiece dial produced in each of the above Examples and Comparative Examples, the surface (the surface side on which the second film is formed for the one having the second film) The typesetting was applied and evaluated according to the following four criteria.
A: The typesetting can be easily applied, and the adhesion of the applied typesetting is very excellent.
○: The typesetting can be easily applied, but the adhesion of the applied typesetting is slightly inferior.
(Triangle | delta): Although the sticking of a typesetting can be performed easily, the adhesiveness of the pasted typesetting is inferior.
X: Not only is the operability of the pasting of the typesetting, but the adhesion of the pasted typesetting is also poor.

8). Evaluation of light transmittance of timepiece dial The light transmittance of each timepiece dial manufactured in each of the above Examples and Comparative Examples was evaluated by the following method.
First, the solar cell and each clock dial were placed in a dark room. Thereafter, light from a fluorescent lamp (light source) separated by a predetermined distance was made incident on the light receiving surface of the solar cell alone. At this time, the power generation current of the solar cell was A [mA]. Next, light from a fluorescent lamp (light source) separated by a predetermined distance was made incident in the same manner as described above with the timepiece dial overlapped on the upper surface of the light receiving surface of the solar cell. In this state, the generated current of the solar cell was B [mA]. Then, the light transmittance of the timepiece dial represented by (B / A) × 100 was calculated and evaluated according to the following four criteria. It can be said that the larger the light transmittance of the timepiece dial, the better the light transmittance of the timepiece dial.
A: 32% or more.
○: 25% or more and less than 32%.
Δ: 17% or more and less than 25%.
X: Less than 17%.

  Thereafter, a watch as shown in FIG. 3 was manufactured by using the timepiece dial manufactured in each of the above Examples and Comparative Examples. At this time, the timepiece dial was arranged such that the surface on which the second film was provided (the surface on which the typesetting was attached) was the outer surface side. Then, each manufactured wristwatch was put in a dark room. Thereafter, light from a fluorescent lamp (light source) separated by a predetermined distance was made incident from a surface on the timepiece dial side (surface on the glass plate side) of the timepiece. At this time, the irradiation intensity was changed at a constant speed so that the irradiation intensity of light gradually increased. As a result, in the timepiece of the present invention, the movement was driven even when the irradiation intensity was relatively small.

9. Evaluation of radio wave permeability The radio wave permeability of each timepiece dial manufactured in each of the above Examples and Comparative Examples was evaluated by the following method.
First, a watch case and a wristwatch internal module (movement) equipped with an antenna for receiving radio waves were prepared.

Next, a watch internal module (movement) and a watch dial were assembled in the watch case, and the radio wave reception sensitivity in this state was measured.
Using the reception sensitivity in a state where the timepiece dial is not incorporated as a reference, the reduction amount (dB) of the reception sensitivity when the timepiece dial is incorporated was evaluated according to the following four criteria. It can be said that the lower the radio wave reception sensitivity is, the better the radio wave transmission of the timepiece dial is.
A: No decrease in sensitivity is observed (below the detection limit).
○: A decrease in sensitivity is observed at less than 0.7 dB.
(Triangle | delta): The fall of a sensitivity is 0.7 dB or more and less than 1.0 dB.
X: The reduction in sensitivity is 1.0 dB or more.

10. Appearance Evaluation A timepiece as shown in FIG. 3 was assembled using each timepiece dial manufactured in each of the above Examples and Comparative Examples. These watches are visually observed from a direction perpendicular to the surface direction of the timepiece dial (vertical direction) and an angle (inclination direction) inclined by 75 ° from the direction perpendicular to the surface direction of the timepiece dial. These appearances were evaluated according to the following four criteria.
A: Appearance is excellent.
○: Good appearance.
Δ: Appearance is slightly poor.
X: Appearance defect.
These results are shown in Table 2.

As can be seen from Table 2, the timepiece dial of the present invention has an excellent aesthetic appearance, is excellent in film adhesion and shape stability, and exhibits excellent durability. In addition, the timepiece dial of the present invention was excellent in electromagnetic wave (light, radio wave) permeability. On the other hand, in the comparative example, a satisfactory result was not obtained.
Further, a timepiece as shown in FIG. 3 was assembled using the timepiece dials obtained in the respective Examples and Comparative Examples. For each timepiece thus obtained, the above-mentioned 1. ~ 8. As a result of the same tests and evaluations, the same results as above were obtained.

It is sectional drawing which shows 1st Embodiment of the dial for timepieces of this invention. It is sectional drawing which shows 2nd Embodiment of the dial for timepieces of this invention. It is a fragmentary sectional view which shows suitable embodiment of the timepiece (portable timepiece) of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Timepiece dial 2 ... Glass fiber sheet 21 ... 1st surface 22 ... 2nd surface 23 ... 1st area | region 24 ... 2nd area | region 25 ... 3rd area | region 3 ... 1st film | membrane 4 ... 1st 2 film 5... Fraying prevention member (first fraying prevention member) 51... Projection part 52... Projection part 6 ... fraying prevention member (second fraying prevention member) 61 ... projection part 62 ... projection part 7 ... opening part 9 ... Solar cell 60 ... Holding member 71 ... Movement 72 ... Body (case) 73 ... Back cover 74 ... Bezel (edge) 75 ... Glass plate (cover glass) 76 ... Winding pipe 77 ... Crown 771 ... Shaft part 772 ... Groove 78 ... Plastic packing 79 ... Plastic packing 81 ... Rubber packing (Crown packing) 82 ... Rubber packing (back cover packing) 83 ... Junction (seal part) 100 ... Watch (portable watch)

Claims (14)

A glass fiber sheet mainly composed of glass fiber;
A first film provided on the first surface side which is one main surface of the glass fiber sheet;
A timepiece dial provided with a second film provided on the second surface side which is the other main surface of the glass fiber sheet,
The glass fiber sheet is provided in the vicinity of the first surface, provided in the first region where at least a part of the first film enters, and in the vicinity of the second surface, A second region at least partially entering, and a third region provided between the first region and the second region, the first film and the second film not entering Having
A timepiece dial comprising a fray-preventing member disposed so as to surround an outer peripheral surface of the glass fiber sheet and having a function of preventing fraying of the glass fiber.   The fraying prevention member covers the vicinity of the peripheral portion of the main surface of the first film and / or the vicinity of the peripheral portion of the main surface of the second film together with the outer peripheral surface of the glass fiber sheet. The timepiece dial described in 1. There is an opening near the center of the main face of the watch dial,
The timepiece dial according to claim 1, further comprising a fraying prevention member disposed so as to cover an inner peripheral surface of the opening and having a function of preventing fraying of the glass fiber.   The fraying prevention member disposed so as to cover the inner peripheral surface of the opening is a part of the main surface of the first film in the vicinity of the opening and / or the inner peripheral surface of the glass fiber sheet. The timepiece dial according to claim 3, wherein the timepiece dial covers a part of the main surface of the second film in the vicinity of the opening.   The timepiece dial according to any one of claims 1 to 4, wherein the fraying prevention member is colorless or silvery.   The timepiece dial according to any one of claims 1 to 5, wherein the first film is formed mainly of a urethane resin at a portion entering the glass fiber sheet.   The timepiece dial according to any one of claims 1 to 6, wherein a portion of the second film entering the glass fiber sheet is mainly made of a urethane resin.   The timepiece dial according to claim 1, wherein the glass fiber sheet has a thickness of 30 to 500 μm.   The timepiece dial according to claim 1, wherein the glass fiber has a thickness of 1 to 20 μm. 10. The timepiece dial according to claim 1, wherein the surface density of the glass fiber sheet is 20 to 500 g / m ² .   The timepiece dial according to claim 1, wherein the third region has a thickness of 5 to 280 μm.   The timepiece dial according to claim 1, wherein the timepiece dial is a radio timepiece dial.   The timepiece dial according to any one of claims 1 to 12, wherein the timepiece dial is a dial for a solar timepiece. A timepiece comprising the timepiece dial according to claim 1.

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