How to identify the material of the membrane switch?

How to identify the material of the membrane switch? Today, the film switch manufacturer jingcaiming to bring you the“Film switch material identification method”, so that you know more about the film switch panel in addition to the industry!

1.Smell it. Pet plastics do not taste like ordinary plastics. Lit with a match, pure PET plastic smells good. If PET plastic is rich in other ingredients, it will smell bad. Sebs teems with bottles that don't work.

2.Look at the charred PET plastic. If the product turns black or has oil droplets soon after it catches fire, many melting points are not quite normal. This problem often occurs with PET materials. 

3. Wiredrawing: take a small piece of film, light it on fire and observe the wiredrawing. See how long the wire can be pulled until it breaks. The more the wire is rolled, the higher the melting point of the product, regardless of whether the wire is rolled in small circles or not. But usually, if it's a bottle, it shouldn't be a problem. 

4. One of the more important things to look at is whether it is rich in PET plastic, which is an important component of PET. First take some more samples, and then spread in a sunny place. The polyvinyl chloride are usually light blue in sunlight. If there is a white crease on one side. The membrane switch is not accurate if you look at it casually. The method of identifying thin-film switching material is mainly based on personal experience.