If necessary, print or coat the plastic film. Through printing, trademarks, product information, or other design elements can be added to the ton bag. And coating can provide better moisture-proof and anti-static properties for ton bags.

The plastic film is cut into appropriate sizes, then folded and welded together to form the shape of a ton bag. Welding is usually done by methods such as high-frequency electric shock, heat sealing, or ultrasonic welding.