About TANAKA Green Shield

This cleaning method takes advantage of a unique TANAKA technology related to base plating and applies it to the recycling business. Sputtered films attached to vacuum film formation equipment components—mainly made of stainless steel (SUS)—found in equipment such as sputtering equipment and vacuum deposition equipment are detached, and the precious metals are recovered and refined. The recovered precious metals and precision-cleaned components are then returned to customers.

• Sputtering equipment
  
• Vacuum film formation equipment
  

■Features

• Can detach PGM sputtered films without damaging the base material
  By applying a nickel plating to an adhesion-preventing plate in advance, after using the plate, only the nickel plate coating between the adhesion-preventing plate and PGM sputtered film is dissolved.
• High PGM recovery rate
  It is expected to reduce recovery loss of precious metals scattered around during the grinding process.
• Reduced environmental impact
  It is expected to reduce the amount of cleaning agent required when cleaning equipment.

TANAKA Green Shield jig cleaning process

■Comparison with conventional base preparation

The precious metal recycling business provided by TANAKA promotes the recycling of limited precious metal resources and contributes to the realization a circular economy.