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Polyester (PET) film

Polyester is commonly known as polyethylene terephthalate, or PET for short.The density is generally between 1.38 and 1.41g/cm.

PET film was originally used as an insulating material in electrical products. In the nameplate, except for the membrane switch, EL film was used as the carrier of circuit and conductive film. At first, PET film was rarely used in the nameplate's signage and panel.

The reason is that although PET is produced by many manufacturers, the surface of PET usually lacks the change of texture and is usually transparent or foggy.The surface roughness cannot meet the requirements of the nameplate;Surface polarity is not easy to and general ink affinity.

However, many superior properties of PET, such as good insulation and heat resistance, high mechanical strength, transparency and air tightness, especially the chemical stability of PET to a variety of chemicals, as well as its folding resistance and high elasticity, are beyond the reach of other plastic membranes.

For this reason, in the nameplate applications where there are special requirements on its performance, the target is constantly turned to PET.At the same time, due to the improvement of the surface state of PET diaphragm and the continuous popularization of special inks, the application of UV ink has created conditions for the development of excellent properties of PET.

At present, more and more attention has been paid to the requirement and choice of PET diaphragm in the nameplate industry.

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