Epson Plating Division - Watch Industry

Palladium, pink gold and DLC plating are used in the watch industry, and are applied to watch cases and parts. Palladium is valued as a decorative metal, as well as for its wear and corrosion resistance and its durability. Pink gold is used for its appearance and its wear resistance.

  PVD Coating for Watch Case and Parts
Epson Plating Division - Watch Industry Using PVD Sputtering Technology, it has Good Hardness and Scratch Resistant. Can be Used for Decorative Purposes, Tools, Jewelry and etc.
Specifications
Substrate: Ti, Stainless Steel
Sputtering Thickness: Ti: 0.1µm, Cu: 0.3~2µm,
Diamond Like Carbon (DLC ): 0.5~2µm
Metallization: Ti-Cu
DLC - Diamond Like Carbon
Thickness: 0.1 - 5µm (±20%)
DLC Hardness: 30 - 60GPa
DLC Friction coefficient: 0.01 - 0.05
Coating Applications
Coating Thickness Hardness Friction coefficient Heat Resistance
TiN 2~6 µm 2500 Hv 0.65 600 °C
TiCN 2~6 µm 4200 Hv 0.3 400 °C
TiAlN 2~6 µm 4500 Hv 0.07~0.3 750 °C
CrN 2~6 µm 2500 Hv 0.2 700 °C
DLC 0.01~2 µm >2500 Hv 0.05~0.2 250 °C
Technical Challenges
TiC
Uniformly Exhibit a Variety of Colors, Excellent Adhesion and Good Hardness
Epson Plating Division - Watch Industry
Various Decorative Colors
DLC-Diamond Like Carbon Coating
High hardness (>40GPa), Low Friction Coefficient and Good Wear Resistance
DLC CaseThe world's first off-body protector structure
Developed in 1975 as the World's First Body Protector. It was developed for its highly Reliable Shock Resistive and Safety feature on Diver's Watch. In 1986, ceramics material was used for the Quartz Models of 100M Diver Watch and characteristics of being light weight, high corrosion-resistant and high hardness.
DLC Case
Can be Plated on Cutting Tools
DLC Case
The cross section of tool after cutting

Please refer to the relevant pages
Copper PlatingPVD

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  Plating for Watch Case and Parts
Epson Plating Division - Watch Industry Plating technique using a constant voltage on the case to avoid the double layer and coating roughness.
Specifications
Substrate: Brass,Stainless Steel,Fe
Metallization: Au, Rh, Ni, Pd, Cu, Pink Gold, Bi-Color Plating
Thickness: 2.8 - 3µm
Technical Challenges
Improved Wear Resistance and Control for Differences in Constant Voltage and Current.
Epson Plating Division - Watch Industry
AuCu--Type I superstructure Hardness 400~500Hv
Epson Plating Division - Watch Industry
Difference in the Constant Voltage and Current to the Difference in Percentage of Gold to the Thickness of Gold.

Please refer to the relevant pages
Gold Plating, Rhodium Plating, Palladium Plating, Nickel Plating, Copper Plating

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  AR (Anti-Reflective) Coating
Epson Plating Division - Watch Industry Epson has developed a high hardness AR (Anti-Reflective) multi-layer coating. It has the ability to maintain excellent wear resistance on the surface of sapphire and glass, and at the same time provide anti-fogging film functionality and high transmittance rate of 99%.
Specifications
Substrate: Glass, Sapphire, BK7
Metallization: AR (Anti-Reflective) Coating
Hardness: 30.4 ± 2.3 GPa
Transmittance: 99% (Without coating: 80~85%)
Adhesion: >220 mN
Water Contact Angle: 105º (Without Repellent: 30~40º)
Technical Challenges
Maintain Scratch and Dust Resistance, Adjustments of Reflection and Refraction of light For Long-Term Usage
Epson Plating Division - Watch Industry
Without and With AR Coating
Epson Plating Division - Watch Industry
Water Test on Glass Without AR Coating
Epson Plating Division - Watch Industry
Water Test on Glass With AR Coating

Please refer to the relevant pages
AR Coating

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  FPC Reel to Reel Selective Plating
Epson Plating Division - Watch Industry Au Spot Plating on Flex Tape for Wire Bonding of Watch Parts
Specifications
Substrate: Flex Tape
Metallization: Au
Thickness: IL = >0.5µm, Non-Critical Area区=>0.05µm
Technical Challenges
Reduced Usage of Gold at Selected Plated Area
Electroplating requires portion 0.5μm (0.1% area), while other portion 0.05μm (99.9% area)
Epson Plating Division - Watch Industry
No Gold Plating on Exterior Surface
Epson Plating Division - Watch Industry
Binding site selection range (0.5μm, 0.1% of the area) in the rectangular region of IL plating

Please refer to the relevant pages
Gold Plating

Epson Plating Division - Industrial Segments

Epson Semiconductor
Epson Automobile
Epson Seiko Watches
Epson Electronics
Epson Medical
Epson Aerospace
Epson Oil & Gas
Semiconductor Industry
Automotive Industry
Watch Industry
Electronics Industry
Medical Devices Industry
Aerospace Industry
Oil and Gas Industry