Plastic container bag is a kind of soft, flexible and large-capacity transport bag with a load of more than half a ton in bulk nature. It is characterized by large volume, light weight, high tensile strength, tear strength, rupture strength and good wear resistance. Acid resistance, alkali resistance, heat resistance, cold resistance, moisture resistance, sun resistance and other comprehensive properties. The use of container bags can ensure the safety of goods, reduce damage, leakage, improve the management of goods, easy to realize the mechanization of loading and unloading operations, improve the efficiency of loading and unloading, facilitate the transport and packaging of powder and granule goods, can achieve packaging serialization and standardization, to a large extent to improve the efficiency of packaging, transportation, handling, reduce costs.