Elstomer Plastic Rubber Laser Etched Switches
Rubber Laser Etched Switches, is also called Plastic Rubber Laser Etched Keypad , Elstomer Plastic Laser Etched Buttons, whose surface is coated by colorful ink through spraying or screen printing , and keypad's legends or backgrounds are formed by laser cutting for led backlight. Elastomer Plastic Rubber Laser Etched Switches are customized by using translucent silicone rubber material in a variety of colors. NOTES:
Generally, custom make El sto mer Plastic Rubber Laser Etched Switches, transparent silicone rubber is better than normal translucent silicone material.
Inner color and surface color generally is big color contrast.
If inner plating color is white, the surface color mostly choose black; If inner translucent silicone keypad with grey or black color keypad, the keypad can't show laser mark characters without back light.
Desired character, pattern or top surface background color is decided by first spraying coated ink color. Second spraying coated ink color generally choose black or gray for light absorption. The last spray coating ink color is keypad's surface color. After finished basic compression transparent elastomer rubber keypads production, the laser etched keypads are sprayed opaque coating.
First processing coated color (inner color) is same to the desired legends color, and the second processing coating color which is keypad surface colors.
After finished the laser keypads coating, puting the keyboards into the laser cutter machine for laser etched process.
Spraying color coating too thin, or poor spraying technology lead to light leak.
Spraying color coating too thick will affect button tactile.
Generally silicone rubber laser keypad actuation force is big (about 150-300grams), and tolerance is large (about +/-50grams)
If you need lower actuation force or tolerance, the best solution is to choose metal dome as keypad contacts. 
