What is the main material of membrane switch

The main material of membrane switch, including polyimide (PI), polyester (PET) and poly ether ketone (PEEK), etc.
These materials have the characteristics of high temperature resistance, wear resistance, corrosion resistance, good flexibility, etc.

Specifically, the membrane switch is mainly composed of the panel, the surface glue, the fixed layer, the interlayer, the circuit layer and the back glue. Among them, the panel material is usually smooth or sand, which requires flatness and printing adaptability.
At the same time, it should also have the characteristics of flexibility and high elasticity. The surface adhesive is used to closely connect the panel layer with the circuit layer to achieve the effect of sealing and connecting.The circuit layer is the core part of the membrane switch,
Usually made of PC, PET, PVC and other transparent film materials.Back glue is used for membrane switch position, ensure it will not fall off in the process of using or shift.

In addition to the above common materials, with the continuous emergence of new materials, more and more new membrane switch materials have been developed, which brings more possibilities for the application of membrane switches.