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We carry two type of sheet designed keypad, a film insert keytop molding (VIK-) and a transferred thin keytop on base film (VIK-UV)


  • Simple structure as it comes one film keysheet
  • VIK-UV is ideally for those who needs thin design that cannot be achieved by plastic keytop design
  • Since cosmetic process is done on back side of film, cosmetic has excellent wear resistance.
  • Mirror type cosmetic is available
  • A plunger sheet (made by similar process) is also available for better tactile feeling.
  • We can suggest many key button contexture from our experiences.

Contact Polymatech today for complete application solution.

Example of Structure

Example of Structure

Environment- Resistant Characteristics
High Temperature 85℃×120H No key top peel off and no adhesive strength decrease
Low Temperature -40℃×120H
Temperature and Humidity 40℃,95%RH×120H

Abrasion- Resistant Characteristics (By Polymatech Abrasion Test Machine)

Plastic Eraser

Wear 1,000 times by 4.9N on a flat test piece

No appearance change

after the test

Sand Eraser Wear 500 times by 4.9N on a flat test piece
Denim Wear 5,000 times by 4.9N on a flat test piece

Chemical- Resistant Characteristics (By Polymatech Abrasion Test Machine)


Wear keytop 50 cycles by 4.9N load with soaking

chemicals on gauze.

Good Durability
Glass Cleaner
Hand Cream
Artificial Fingerprint
Olive Oil
  Good durability with chemicals and food materials.
(recommended to be tested under your test specifications)

*Please contact us for other reliability tests and results.

Development Flow

Upon receipt of your design information, we suggest the most optimized sheekeypad design and develop by following the development flow to achieve stable production. Contact Polymatech today for your complete application solutions.

Based on our design guide, we review design


Through project development phases, discover design and process
issues then solve them before getting into mass production stage.

We welcome your any comments to our products and design engineering.
If you have any comments on our products, requests on product customization and design inquiries, please contact