Membrane Switch everyone should be no stranger, in our life is also more application, film switch of the mask coating material generally go to the matter of polylipid material, the first polyvinyl chloride (PVC), polycarbonate (PC), polyester (PET) three, each of the three materials have good or bad, can be selected according to their own needs.
Such as: folding life, resistance to chemical attack, wear resistance, insulation performance, window transparency, drum clarity, temperature level, UV resistance is not used as a reference data for selection. How exactly is the difference between the plastic film extracts, is now the lack of the same scale. According to the difference of its thickness, it is not divided into film, sheet war plate. According to the German DIN55405 scale, its thickness is less than 1.5 mm called a film, and the thickness of more than 1.5 mm is called a plate. Is in China is accustomed to the thickness of 0.3mm as the following called thin film, thickness is 0.3-0.7 called sheet, 0.8mm or more called plate. Because is in the nameplate process outside, the ordinary take the thickness of unlimited, usually accustomed to the film film take the film collectively called the film.
