Ton bag (also called container bag/space bag/flexible container/ton bag/ton bag/space bag/sub-bag): is a flexible transport packaging container. It has the advantages of moisture-proof, dust-proof, radiation-resistant, firm and safe, and has sufficient strength in structure. As the container bag loading and unloading, handling are very convenient, loading and unloading efficiency is significantly improved, in recent years the development of rapid. Container bags are generally more with polypropylene, polyethylene and other polyester fibres woven and made.