Electronic Device Industry

Trapping of Protective Film During Fuel Cell Sheet Unwinding

The protective film of a fuel cell sheet is removed when the sheet is being unwound. The generated electrostatic charge becomes extremely large because the sheet is charged during unwinding and the protective film is charged by separation.
The charged film sometimes gets trapped due to the force that makes the films stick together or makes the film cling to the roller.

Trapping of Protective Film During Fuel Cell Sheet Unwinding

Conventional countermeasures

Static elimination brush

  • The static elimination speed is insufficient.
  • Use may cause entry of foreign particles.

Countermeasures with static eliminators (ionizers)

The high-speed static electricity elimination produces the required effects without sacrificing line speed and prevents the release of defective sheets.

Countermeasures with static eliminators (ionizers)

Improvements and Effects
Words from the worksite

Reduced cost for addressing defective products

Disposal cost of defective lots: $30,000/year

Recall cost (transportation cost, on-site service travel cost, and cost of internal man-hours): $10,000/year