Ornament, its mfg.method and timepiece

A manufacturing method and decoration technology, applied in decorative arts, special decorative structures, mechanically driven clocks, etc., can solve the problems of poor durability of decorations, easy peeling, poor adhesion of metal materials, etc., and achieve appearance and durability Excellent, excellent effect of radio wave permeability

Inactive Publication Date: 2005-08-10
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, plastics generally have poor adhesion to metal materials, especially Ag and Al.
Therefore, there is a problem that peeling between the substrate and the film is easy to occur, and the durability of the decoration is poor.

Method used

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  • Ornament, its mfg.method and timepiece
  • Ornament, its mfg.method and timepiece
  • Ornament, its mfg.method and timepiece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] An ornament (external part for a watch (dial plate)) was manufactured by the method shown below.

[0137]First, a base material having the shape of a watch exterior part (dial) is prepared by compression molding from polycarbonate, and then necessary parts are cut and polished. The obtained substrate was formed into a substantially disc shape, diameter: about 27 mm×thickness: about 0.5 μm.

[0138] Next, the substrate is cleaned. As cleaning of the substrate, first, alkaline electrolytic degreasing was performed for 30 seconds, and then, alkaline immersion degreasing was performed for 30 seconds. Thereafter, neutralization for 10 seconds, water washing for 10 seconds, and pure water washing for 10 seconds were performed.

[0139] On the surface of the thus-cleaned substrate, TiO 2 The formed first film (first step).

[0140] First, install the cleaned substrate in the sputtering device, then preheat the device, and exhaust (depressurize) the sputtering device to 3 ×...

Embodiment 2～4

[0150] By changing the processing time of the 1st step and the 2nd step, the average thickness of the 1st coating and the 2nd coating is as shown in Table 1, except that, the decorative article (wristwatch With exterior decoration parts (number plate).

Embodiment 5

[0152] Except for using acrylonitrile-butadiene-styrene copolymer (ABS resin) as the constituent material of the base material, an ornament (external decorative part (dial plate) for a watch) was produced in the same manner as in Example 1 above. .

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Abstract

The invention provides a decoration with beautiful appearance and good durability equipped with a substrate mainly made of plastic material, a manufacturing method for the decoration and a clock equipped with the decoration, which is characterized in that the decoration (1) comprises a substrate (2) mainly made of plastic material, a first film covering (3) and a second film covering (4); the first film covering (3) is arranged on the substrate (2) and is made of the material selected from at least one substance of Cr, Ti, Cr compound and Ti compound; the second film covering (4) is arranged on the back of the first film covering (3) opposite to the substrate and is made of the material selected from at least one substance of Ag and Al; the first film covering (3) is optimized to be made of the material selected from at least one substance of Cr, titanium oxide and chromium oxide; besides, the sum of the average thickness of the first film covering (3) via optimal selection and the average thickness of the second film covering (4) is 0.02 Mum to 2.5 Mum.

Description

technical field [0001] The present invention relates to an ornament, a method for manufacturing the ornament, and a watch. Background technique [0002] For decorative items such as exterior decorative parts for clocks, a beautiful appearance is required. [0003] Conventionally, in order to achieve such a purpose, for example, silver-white metal materials such as Pd, Rd, and Pt have been used as constituent materials of decorations. However, each of these is an expensive metal, and there is a problem that the manufacturing cost of the decoration becomes high. In addition, Ag or Al is used as a silver-white material instead of the above-mentioned metal material. [0004] On the other hand, for the purpose of reducing production costs and increasing the degree of freedom in decorative molding, attempts have been made to use plastic as a substrate and to form a coating made of a metal material on the surface (see, for example, Patent Document 1). [0005] However, plastics ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C23C28/00C23C14/00C23C14/08C23C14/20C23C28/02C23C30/00
CPCC23C14/205C23C14/0015C23C14/0036C23C14/083C23C14/20C23C28/00
Inventor川上淳小尾庆幸
OwnerSEIKO EPSON CORP