Membrane Keypad Switch for Industry Machine Customization 

WHAT IS MEMBRANE SWITCH KEYPADS?   All materials for manufacturing membrane keypads are obtained from leading manufacturers including 3M. They are carefully selected for each application to provide the required specification,which may include scratch or chemical resistance,flexibility or low cost.Membrane switch is a printed electronic circuit that uses pressure to open and close a circuit.The membrane switch circuitry is most often screen printed using conductive inks,which are typically made of silver,carbon,and/or graphite.   Membrane switch is an operating system that integrates key functions, indicating elements and instrument panels. It consists of four parts: panel, upper circuit, isolation layer and lower circuit. When the membrane switch is pressed, the contacts of the upper circuit are deformed downward, and are in contact with the pole plate of the lower circuit. After the finger is released, the contacts of the upper circuit bounce back…