PVC:a.Advantages:the cheapest and very commen material. Very easy to be sealed by heat sealing machine and high frequency.(materials for blister packing);
b.Disadvantage:not environmental and nonflammable. Once flambe, it will produce chloration, what will do bad to the environment;
PS:a.Advantage:very easy to be vacuum thermoformed and it is environmental material. Always molded into trays, including flocky trays. Widely used in electron, medical, food, cosmetic, hardware and so on;
b.Disadvantage:relatively speaking, it is a bit fragile and easy to torn off;
PP:a.Advantage:high melting point and can be microwaveable. Widely used in food packaging;
b.Disadvantage:shrink material, not easy to be vacuum thermoformed; has not passed the Halogen Free test but it is food grade material;
PET:PET has two types,one is A-PET, the other is PETG. Both have high transparency and are environmental material. A-PET could not be sealed by our machine but PETG can. PETG is the only one which has passed the Halogen Free Test;
(materials for blister packing).