1, polycarbonate film (PC)
      PC material has the distinction between sand surface and glossy surface. The comprehensive index of physical and chemical properties of PC material is better. The ink that it adapts is also more widely used. It is the most common material for membrane switch panel layer applications. The polycarbonate film has a wide range of operating temperatures (-135 to 135 °C). When the temperature or humidity changes, the performance of this material does not change much, thus ensuring that the panel can be used in various types of equipment and various harsh environments. . However, its disadvantage is that it is relatively sensitive to solvents, and solvents with strong solvation are liable to embrittle and crack.

      2. PVC film (PVC)
      The price of PVC film material is relatively low, which is about one-half of that of PC. When producing civilian-used products, if PVC material is selected, the production cost can be reduced. At the same time, the ductility of PVC material is better and cold pressing can be used. Stereoscopic graphics. PVC film has poor temperature resistance, especially at high temperatures, its softening temperature is 59 °C, and its elasticity is not as good as polycarbonate film. However, it has a high elongation (130%) and because of its low price, it is suitable for use under normal conditions.

      3, polyester film (PET)
      The surface state of the PET film is usually a glossy transparent film, and in a few cases, a sand-faced product such as Kimoto Co., Ltd. KB product. The polyester film has good elasticity and temperature resistance, and the price is between the polycarbonate film and the polyvinyl chloride film. However, because the surface of the film is difficult to be processed into a matt type texture, it is mostly a transparent sheet. At the same time, the surface of the polyester film can not obtain a satisfactory printing effect for most plastic inks, and a specific special ink is generally used. Ensure good follow-up processing performance. Because the general performance of PET film can be replaced by PC film, it is not used in the case of panel materials, except in some special occasions, such as insulation, rebound, solvent resistance and other films can not be satisfied There are only a few applications under the circumstances.

      The above is the three more commonly used membrane switch panel substrate, I believe you should understand almost, if there are more questions, please call the national hotline: 0755-27653836, we will be happy to help you!