JP2008111701A - Electrodeposited component for timepiece and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrodeposited component for a timepiece capable of emitting light brightly and keeping high adhesive force without a cost increase and to provide its manufacturing method. <P>SOLUTION: The electrodeposited component 20 comprises: an electroforming part 22 forming a frame-shape; a light emitting part 24 provided in the electroforming part 22; a backup part 26 provided at the back face of the emitting part 24; and a self-adhesive layer 28 provided on the back faces of the backup part 26 and the electroforming part 22. The backup part 26 is composed of an ink added with a surface tension suppressing agent, and preferably a delustering agent. This backup part 26, of which the surface tension is suppressed, is formed flatly along the back face of the light emitting part 24. Therefore, the self-adhesive layer 28 provided on the back face of the backup part 26 is flattened. When the self-adhesive layer is flattened, the self-adhesive layer can be closely stuck and fixed to the flattened surface of the display plate 30 for timepiece, sticking the electrodeposited component 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a timepiece electrodeposition component including a time character, a mark, a pattern, and the like to be attached to a timepiece display board and the like, and a method of manufacturing the same, and more particularly to a light emitting device that emits light by storing light.

  In the past, parts such as time letters provided on the display panel for watches were formed as individual parts and attached individually, but then time letters were formed by electrodeposition etc. for the purpose of thinning and miniaturization. Etc. are directly formed on the display panel for watches. In recent years, the electrodeposition image 2 formed on the conductive substrate is transferred to the support base 4 as shown in FIGS. 11 and 12 so that it can easily cope with various designs and configurations. It has been commercialized and has been appropriately attached to the surface of the watch display plate 8 using the adhesive 6 for fixing provided on the electrodeposition image 2.

  The electrodeposition image 2 has a closed diagram shape, and a paint 10 such as a luminescent paint or a fluorescent paint is applied on the inside thereof. The electrodeposition image 2 and the paint 10 are adhered to the support substrate 4 in a state where the electrodeposition image 2 and the paint 10 can be peeled off by a pressure-sensitive adhesive layer 12 provided on one surface of the support substrate 4. Moreover, the release paper 14 is stuck to the adhesive 6 for fixing provided on the surface in the adhesion direction of the electrodeposition image 2 and the paint 10 in a peelable state for easy storage. At the time of use, the release paper 14 is peeled off, and the fixing adhesive 6 is bonded to the watch display plate 8 so as to be pressed. After that, the support base 4 is peeled from the electrodeposition image 2 and the paint 10 together with the pressure-sensitive adhesive layer 12, so that only the electrodeposition image 2 and the paint 10 can be bonded to the watch display plate 8. Thus, when the electrodeposition image 2 is formed on the support base material 4, there is an advantage that positioning is facilitated when the paint 10 such as a luminous paint is applied to the electrodeposition image 2 (for example, Patent Documents). 1).

  As described above, when a luminescent paint is applied to the inner side of the electrodeposition image 2 forming the time character, etc., the area where the luminescent paint is applied is small, so that the visibility is somewhat poor and the paint that emits light strongly is used. Is preferred. However, such paints are expensive and lead to increased costs.

Therefore, as shown in FIG. 13, when an attempt was made to provide a back-up portion 16 made of white ink on the back surface side of the paint 10 such as a luminescent paint, it was confirmed that the luminescence appeared brighter. However, when the backup portion 16 is provided, as shown in FIG. 13, the backup portion 16 has a convex shape protruding in a spherical shape due to surface tension. For this reason, the adhesive 6 for covering the backup portion 16 also has a convex shape according to the shape of the backup portion 16, and the area in contact with the surface of the timepiece display board 8 becomes extremely small and peels off. Has occurred.
JP-A-10-25591

  The problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, and to provide an electrodeposited part for a watch that can emit bright light and maintain a high adhesive force without increasing the cost, and a method for manufacturing the same. There is.

The electrodeposition part for a watch of the present invention includes a frame-shaped electroformed part, a light emitting part provided in the electroformed part and made of a light emitting material, and a backup part provided on the back surface of the light emitting part to increase brightness. And an adhesive layer provided on the back surface of the backup part and the electroformed part, and the backup part is made of ink to which a surface tension inhibitor is added. It is preferable that the surface tension inhibitor is a delustering agent. The backup part of the electrodeposition part for watches is made of a bright acrylic ink with a matting agent made of fine particles of any one of silicon dioxide, calcium oxide, aluminum oxide, zirconium oxide and titanium oxide or a combination thereof. It consists of added ink. The delustering agent is added at a rate of 2-3%. On the other hand, in this method for manufacturing an electrodeposited part for a watch, a step of forming a frame-shaped electroformed part on a conductive substrate so as to be peelable, and a step of forming a light emitting part made of a luminescent material in the electroformed part And a step of forming a backup portion by printing light-colored ink added with a surface tension inhibitor covering the light emitting portion, and a step of forming an adhesive layer on the backup portion and the electroformed portion. Become. As the surface tension inhibitor, it is preferable to add a delustering agent to light ink. The back-up part in this method for producing an electrodeposited part for a watch is made of a bright acrylic lustrous agent composed of fine particles of any one of silicon dioxide, calcium oxide, aluminum oxide, zirconium oxide and titanium oxide, or a combination thereof. It is formed by printing with ink added to the system ink. The delustering agent is added at a rate of 2-3%. In such an electrodeposition part for a watch and a manufacturing method thereof, the backup part is formed to a thickness of 7 to 10 μm along the back surface of the light emitting part. Moreover, the said adhesion layer is formed in the thickness of 10-20 micrometers along the back surface of the said electroforming part and the light emission part with the said backup part.

In the timepiece electrodeposition component of the present invention, since the light-colored backup portion is provided on the back surface of the light emitting portion, the light emitted from the light emitting portion can be reflected in the front direction to be brighter. Further, since a surface tension inhibitor (preferably a delustering agent) is added to the ink forming the backup portion, the surface tension is suppressed, and the backup portion is formed along the back surface of the light emitting portion without rising in a convex shape. Can be formed. As a result, the adhesive layer formed so as to cover the backup portion can be formed almost flat, and the adhesive layer can be firmly adhered to the surface of the timepiece display plate and firmly fixed.
The reason why the surface tension of the backup unit 26 is suppressed is considered to be because the molecular centripetal force of the ink is hindered by the surface tension inhibitor. Among surface tension inhibitors, it is preferable to use a delustering agent composed of fine particles such as silicon dioxide and calcium carbonate.

  Further, in the method of manufacturing an electrodeposition part for a watch according to the present invention, the backup part and the adhesive layer can be formed almost flat, so that even an electrodeposition part having a more complicated planar shape or extremely small outer shape can be used. The backup part and the adhesive layer can be formed with high accuracy according to the outer shape easily by printing.

  The electrodeposition component for timepieces according to the present invention includes a frame-shaped electroformed part, a light emitting part provided in the electroformed part, a backup part provided on the back surface of the light emitting part, and back surfaces of the backup part and the electroformed part. And an adhesive layer provided on the surface. The back-up portion in this timepiece electrodeposition part is preferably made of an ink to which a surface tension inhibitor, particularly a delustering agent is added. The backup portion has a reduced surface tension and is formed flat along the back surface of the light emitting portion. For this reason, the adhesive layer provided on the back surface of the backup unit is also flat. When the pressure-sensitive adhesive layer becomes flat in this way, the pressure-sensitive adhesive layer can be brought into close contact with and adhered to the flat surface of the timepiece display plate to which the electrodeposition component is attached.

1 is a cross-sectional view showing an electrodeposition part for a watch according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a state in which the electrodeposition part for a watch shown in FIG. FIG. 2 is a plan view of the electrodeposition part for a watch shown in FIG. 1. Reference numeral 20 denotes an electrodeposition component, which in this embodiment is a component constituting a time character having a substantially rectangular planar shape.

  Reference numeral 22 denotes an electroformed part, and in this embodiment, the planar shape is formed in a frame shape having a substantially rectangular shape. Inside the electroformed part 22, a light emitting part 24 made of a light emitting material such as a luminous paint or a fluorescent paint is provided.

  A backup unit 26 having a bright color such as white is formed so as to cover the entire back surface of the light emitting unit 24 and to cover a part of the back surface of the electroformed unit 22. Reference numeral 28 denotes an adhesive layer for fixing the electrodeposition component 20 to the surface of the timepiece display board 30 and is formed so as to cover all of the back surface of the backup portion 26 and the back surface of the electroformed portion 22.

  In this embodiment, the back-up unit 26 adds a delustering agent made of fine particles obtained by combining any one of silicon dioxide, calcium oxide, aluminum oxide, zirconium oxide, and titanium oxide, or an appropriate combination thereof, to light acrylic ink. It is formed using the prepared ink. Thereby, the surface tension of the backup part 26 is suppressed, and the backup part 26 is formed substantially flat along the back surface of the light emitting part 24 and the back surface of the electroformed part 22. Accordingly, the adhesive layer 28 formed so as to cover the backup portion 26 is also formed flat along the backup portion 26. As a result, as shown in FIG. 2, almost the entire area of the adhesive layer 28 can be brought into close contact with the flat surface of the timepiece display plate 30, and can be firmly attached.

  In addition, when the backup unit 26 is formed, the light emitted from the light emitting unit 24 in the back direction can be reflected in the front direction, and the light emitting unit 24 can be brightened. Further, as shown in FIG. 3, even if a slight gap G is generated between the electroformed part 22 and the light emitting part 24, the backup part 26 covers the back side of the gap by the backup part 26. The reflected light can make the gap inconspicuous, and the brightness can be further increased.

  Next, the manufacturing method of the electrodeposition component 20 which consists of the said structure is demonstrated using FIG. 4 thru | or FIG. First, as shown in FIG. 4, a photoresist 34 is formed on a portion of the surface of the conductive substrate 32 such as a metal plate except for the portion A where the electroformed portion 22 is formed. The photoresist 34 is exposed or developed by applying or adhering a liquid resist, dry film resist, resist ink or the like to the entire surface of the substrate 32, masking the portion A forming the electroformed portion 22, and developing and exposing. It is formed by removing no part.

  After forming the photoresist 34 as described above, as shown in FIG. 5, nickel, gold, silver, copper, iron or the like or an alloy thereof is deposited on the surface of the substrate 32 by an electrodeposition method. Part 22 is formed. In this embodiment, electrolysis is performed by depositing 30 to 50 μm of nickel on the surface of the substrate 32 on which the photoresist 34 is not formed by immersing in a bath containing a nickel sulfate solution (Watt nickel bath) and energizing. A portion 22 is formed. Thereafter, the photoresist 34 is removed by immersion in a stripping solution so that only the electroformed part 22 is formed on the substrate 32.

  Next, as shown in FIG. 6, a back sheet 36 is attached to the electroformed part 22 formed on the substrate 32 in a peelable state, and the electroformed part 22 is attached to the back sheet 36 as shown in FIG. Transcript. The back sheet 36 is provided with an adhesive layer 38 made of a pressure-sensitive adhesive or the like. The adhesive layer 38 is adhered to the surface to be the front surface of the electroformed part 22 and peeled from the substrate 32 to be electroformed. The portion 22 is transferred to the back sheet 36 side.

After the electroformed part 22 is transferred to the back sheet 36 as described above, the light emitting part 24 is formed inside the electroformed part 22 as shown in FIG. The light emitting section 24 is formed by printing a light emitting material such as a luminous paint or a fluorescent paint by screen printing or the like. In the present embodiment, the light emitting portion 24 is also printed with a thickness of 30 to 50 μm which is substantially the same as the electroformed portion 22.

  Thereafter, as shown in FIG. 9, a backup unit 26 is formed so as to cover the light emitting unit 24. The backup unit 26 has a bright color that strongly reflects light such as white. As described above, the backup unit 26 is made of a surface tension inhibitor, preferably fine particles in which any one of silicon dioxide, calcium oxide, aluminum oxide, zirconium oxide, and titanium oxide is combined with acrylic ink. It is formed by printing such as screen printing with ink added with a delustering agent. In this embodiment, the delustering agent is added to the white acrylic ink at a rate of 2-3%. When the addition rate is less than 2% or exceeds 3%, the desired surface tension suppressing effect cannot be obtained. As described above, since the surface tension of the ink added with the delustering agent is suppressed, the ink is formed almost flat along the back surfaces of the light emitting portion 24 and the electroformed portion 22 when printed. As a result, the backup portion 26 is accurately printed at a predetermined position with a constant thickness. Moreover, the backup part 26 in a present Example is formed with the thickness of 7-10 micrometers. If the backup portion is thinner than 7 μm, the desired brightness cannot be obtained, and if it is thicker than 10 μm, the adhesive layer in the next step is not stably formed. Further, the backup unit 26 also plays a role of supporting the light emitting unit 24 from the back side.

  After forming the backup portion 26 in this manner, an adhesive layer 28 is formed so as to cover the back surface of the backup portion 26 and the electroformed portion 22 as shown in FIG. Since the adhesive layer 28 is for fixing the electrodeposited component 20 to the watch display board 30 and the like, the adhesive layer 28 is made of an adhesive having a stronger adhesive force than the adhesive layer 38 that temporarily adheres to the back sheet 36. is there. By performing printing such as screen printing using such an adhesive, an adhesive layer 28 is formed on the entire back surface of the backup portion 26 and the electroformed portion 22. Further, the adhesive layer 28 is formed flat without being raised in the back surface direction because the backup portion 26 is formed substantially flat, and is formed with a thickness of 10 to 20 μm in this embodiment. When the pressure-sensitive adhesive layer is thinner than 10 μm, the pressure-sensitive adhesive strength is lowered, and when it is thicker than 20 μm, stable pressure-sensitive adhesive strength cannot be obtained.

  After forming the adhesive layer 28 as described above, a peelable release sheet 40 is attached to the adhesive layer 28 in order to protect the adhesive layer 28 and facilitate handling when storing and transporting the electrodeposited component 20. . Note that it is preferable to use a transparent material for the back sheet 36 and the release sheet 40 in order to facilitate positioning and the like when the electrodeposition component 20 is attached to the timepiece display board 30 or the like.

  As described above, in this embodiment, the surface tension of the backup portion 26 is suppressed, so that it can be formed almost flat by printing. Thereby, the adhesive layer 28 that overcoats the backup portion 26 can be easily formed flat by printing. Further, the thickness of the backup part 26 and the adhesive layer 28 can be formed uniformly with high accuracy, and the total thickness of the electrodeposited component 20 can always be kept constant to improve the quality.

  The electrodeposition parts for watches and the manufacturing method thereof according to the present invention are used as time letters, marks, patterns, etc., which are fixed to the display board for watches. In addition, decorations to be attached to exterior parts such as cases and bands. It can also be used for decorative parts in members other than watches and watches.

It is sectional drawing which shows the electrodeposition component for timepieces concerning one Example of this invention. It is sectional drawing which shows the state which affixed the timepiece electrodeposition components shown in FIG. 1 to the timepiece display board. It is a top view of the electrodeposition component for timepieces shown in FIG. It is principal part sectional drawing which shows the state in which the photoresist was formed on the board | substrate. It is principal part sectional drawing which shows the state which formed the electroformed part on the board | substrate shown in FIG. It is principal part sectional drawing which shows the state which adhere | attached the back sheet | seat on the electroformed part shown in FIG. It is principal part sectional drawing which shows the state which transcribe | transferred the electroformed part to the back sheet | seat shown in FIG. It is principal part sectional drawing which shows the state which formed the light emission part in the electroformed part shown in FIG. It is principal part sectional drawing which shows the state which formed the backup part on the light emission part shown in FIG. It is principal part sectional drawing which shows the state which formed the adhesion layer on the backup part shown in FIG. 9, and attached the peeling sheet. It is principal part sectional drawing which shows the conventional electrodeposition component. It is principal part sectional drawing which shows the state which affixes the electrodeposition component shown in FIG. 11 to the display plate for timepieces. It is principal part sectional drawing which shows a state when trying to form a backup part in the back surface side of the part which light-emits.

Explanation of symbols

2 Electrodeposition image 4 Support base material 6 Adhesive for fixing 8 Display panel for timepiece 10 Paint 12 Pressure sensitive adhesive layer 14 Release paper 16 Backup part 20 Electrodeposition part 22 Electroforming part 24 Light emitting part 26 Backup part 28 Adhesive layer 30 Clock Display board 32 Substrate 34 Photoresist 36 Back sheet 38 Adhesive layer 40 Release sheet

Claims (10)

A frame-shaped electroformed part;
A light emitting part provided in the electroformed part and made of a light emitting material;
A backup unit provided on the back surface of the light emitting unit to increase brightness;
An adhesive layer provided on the back surface of the backup part and the electroformed part;
Consists of
The timepiece electrodeposition component, wherein the backup portion is made of ink to which a surface tension inhibitor is added.   The timepiece electrodeposition component according to claim 1, wherein the surface tension inhibitor is a matting agent. The backup portion is made of an ink obtained by adding a delustering agent composed of fine particles of any one of silicon dioxide, calcium oxide, aluminum oxide, zirconium oxide, and titanium oxide or a combination thereof to a light acrylic ink. The timepiece electrodeposition component according to claim 1 or 2, characterized in that 4. The electrodeposition part for a watch according to claim 2, wherein the delustering agent is added at a rate of 2-3%. Forming a frame-shaped electroformed part on a conductive substrate in a peelable manner;
Forming a light emitting portion made of a light emitting material in the electroformed portion;
Forming a backup portion by printing light-colored ink to which a surface tension inhibitor that covers the light emitting portion is added; and
Forming an adhesive layer on the backup part and the electroformed part;
A method of manufacturing an electrodeposited part for a watch, comprising: 6. The method for producing an electrodeposited part for a watch according to claim 5, wherein a delustering agent is added to the light-colored ink as the surface tension inhibitor. The backup portion is printed with an ink obtained by adding a delustering agent composed of fine particles of any one of silicon dioxide, calcium oxide, aluminum oxide, zirconium oxide, and titanium oxide or a combination thereof to a light acrylic ink. The method for manufacturing an electrodeposited part for a watch according to claim 5 or 6, wherein the electrodeposited part is formed by: The method for producing an electrodeposited part for a watch according to claim 6 or 7, wherein the delustering agent is added at a rate of 2-3%. The method for manufacturing an electrodeposited part for a watch according to claim 5, wherein the backup part is formed to a thickness of 7 to 10 μm along the back surface of the light emitting part. 10. The method for manufacturing an electrodeposited part for a watch according to claim 9, wherein the adhesive layer is formed in a thickness of 10 to 20 [mu] m along the back surface of the electroformed part and the light emitting part together with the backup part.

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