The full name of container bag is flexible container bag, also known as large bag or ton packaging bag. It is a soft and flexible packaging container made of foldable adhesive tape, resin processing cloth, and other soft materials for large volume transportation. It is generally made from polypropylene or polyethylene as the main raw material, which is extruded into a film, cut, drawn, and then woven, cut, and sewn. Adopting this type of packaging is not only beneficial for improving loading and unloading efficiency, but is particularly suitable for packaging bulk powder and granular goods. It is conducive to promoting the standardization and serialization of bulk packaging, reducing transportation costs, and also has the advantages of convenient packaging, storage, and low cost. Especially suitable for mechanized operations, it is an ideal choice for storage, packaging, and transportation. It can be widely used in the packaging of bulk materials such as cement, fertilizers, salt, sugar, chemical raw materials, ores, etc. for road, railway, and sea transportation. Therefore, in recent years, countries around the world have widely used container bags to transport powder and granular goods. The emergence and use of container bags is a qualitative revolution in the shipping method of powder and granular goods.