During the production and transportation process, many products are packaged in barrel shaped containers. Due to the physical and chemical properties of some products, they cannot be packaged in iron drums, and the diameter of the drums is mostly not uniform. For these types of barrels, in order to prevent them from being stacked neatly or fixed firmly during transportation, which may lead to product leakage in the container and cause a series of problems, it is possible to consider using Best polyester fiber flexible packaging during shipment.