Membrane switches constitute an integrated operating system combining key functions, indicator elements, and instrument panels. They comprise four components: the front panel, upper circuit, isolation layer, and lower circuit. Upon pressing the membrane switch, the upper circuit's contact point deforms downward, making contact with the lower circuit's electrode plate to complete the circuit. When the finger is released, the upper circuit contact point springs back, breaking the circuit and triggering a signal. Membrane switches feature a compact structure, aesthetically pleasing appearance, and excellent sealing properties. They offer moisture resistance and extended service life.
PET membrane switches are flexible circuit control panels manufactured from polyester (PET) film. Combining lightweight construction, high sensitivity, and robust environmental adaptability, they find extensive application in medical devices, household appliances, and industrial control systems.
Superior Mechanical Properties
Features a rocker-style dual-contact design with spring-return mechanism, delivering over 5 million press cycles. Exhibits high flex resistance and tensile strength.
Exceptional Environmental Adaptability
Resistant to chemical reagents and household cleaners, with waterproof and dustproof capabilities (IPX4 rating). Operates within a temperature range of -20°C to +70°C, suitable for humid or dusty environments.
Compatibility with Printing and Surface Finishes
Printable surface supports screen printing with strong ink adhesion. Compatible with liquid window printing for transparent areas and sand-finish screen printing processes, delivering an aesthetically pleasing and wear-resistant appearance.
Structural and Cost Advantages
Utilises PET film as the circuit substrate, offering lightweight construction and cost-effective production suitable for mass manufacturing. Compared to traditional switches, it provides superior sealing and waterproofing performance alongside extended service life.
Suitable for applications demanding high durability, such as industrial control systems, medical equipment, and precision instruments. Examples include: start/stop buttons in industrial machinery, parameter adjustment keys in medical apparatus, and waterproof/dustproof buttons in outdoor instrumentation.
