graphic overlays and silver circuits printed on membrane switches

The graphic overlay is generally made of exquisite patterns and texts by screen printing on colorless and light-transmitting sheets of less than 0.25MM, such as PET and PC. It has the characteristics of high transparency, high ink adhesion, high elasticity, and anti-breakage.
The silver circuit layer uses polyester film (PET) with good performance as the carrier of the membrane switch circuit pattern, and uses a special process to screen-print the silver paste carbon paste or gold paste on it to make it have electrical conductivity, and its thickness is 0.05MM- PET material between -0.188MM, the most common is to use raw material 0.125MM PET
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