Dongguan LuPhi Electronics Technology Co., Ltd.
The circuit of Membrane Switches can be flex and rigid. It depends on the customer end application and also related to the cost budget and other considerations. For example, life, resistance, connection type on main board etc.
For the Rigid circuit membrane switches, the circuit is rigid printed circuit board. The material of rigid PCB is usually FR4 and Copper. By this type of membrane switch, the connector usually is the SMD connector(sometimes also can be straight through connector). For some application which need very stiff capability, then use PCB circuit membrane switch.
For the flex circuit membrane switches, there are two types. They are silver printed PET circuit and copper etched FPC circuit.
Hotbar Lamination(Or Heatseal Lamination or Pluse Hot Pression) of FFC and FPC Tail to PET/ITO/PCB/FPC Circuit Layer: sometimes the customer need use the separate FPC or FFC tail connected to the membrane switch PET or PCB or FPC circuit layer, and for the Capacitive Membrane Switches also have such kind of application, then the hotbar lamination(or called pluse hot press lamination, or heatseal lamination) becomes necessary in these application fields. LUPHITOUCH is a professional manufacturer with such kind of lamination capability. We have such kind of assembly machine. We can hotseal the FFC/FPC tail to PET or FPC or PCB circuit of our manufactured membrane switches.