Differences between PVC, PC, PET membrane switches:
The membrane switch can be made of pc film, pvc film or pet film, so what is the difference between them?
PVC film (polyvinyl chloride)
Advantages: low price, excellent chemical resistance and excellent insulation performance
Disadvantages: low temperature resistance (around 60 °C), poor resistance to stretching, poor wear resistance
Application: Signage panel, not suitable for membrane switch and light touch panel Applications: Signage panel, not suitable for membrane switch and light touch panel.
PC film (polycarbonate)
Advantages:
1. high temperature resistance (in the temperature range of -30 ° C ~ 130 ° C), when the temperature or temperature suddenly changes, the PC film does not change much.
2. Good mechanical properties, PC film has high impact resistance and high elasticity, and its yield point force is about 60N/mm 2 , which is the most impact-resistant plastic today.
3. The processing adaptability is strong, and different textures can be pressed on the surface to improve the appearance state of the material.
4. chemical resistance to dilute acid weak base alcohols and alcohol ethers, in addition, PC film also has high insulation strength, non-directional, high visibility and low atomization.
Application: PC film is suitable for all kinds of sign film panels, etc., and the price is moderate, it is the most common material used.
PET (polyester) film
Advantages: PET film has good switch button life and excellent corrosion resistance and wear resistance, and excellent insulation performance.
Disadvantages: The price is slightly higher than the PC panel and cannot be UV resistant.
Application: High requirements for instrumentation and appliance panels.
Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent
