1. Plastic bags according to the material can be divided into OPP, CPP, PP, PE, PVA, EVA, composite bags, co-extruded bags and so on.

CPP non-toxic, can be compound, transparency than PE good, slightly worse hardness. Soft texture, PP transparency, PE softness.

PP hardness lower than the OPP, can be stretched (two-way stretch) pull into a triangle, bottom seal or side seal

PE has formalin, slightly less transparent

PVA soft texture, good transparency, is a new environmentally friendly materials, water-soluble, raw materials imported from Japan, expensive, more widely used in foreign countries

OPP transparency is good, hardness is strong

Composite bag sealed strength can be printed, the ink will not fall off

Coated bags are transparent, soft and printable

2. Plastic bags according to the product structure and use can be divided into: plastic woven bags and plastic film bags