Bubble film is waterproof, moisture-proof and compressive. It is the best choice for mailing valuables, cosmetics, small household appliances, fragile goods, etc. Bubble film machine has the functions of shock proof, damage proof, buffer and moisture proof. Bubble film machine is widely used in packaging of precision electronic instruments, crafts, automobiles, motorcycles, bicycle accessories, ceramic glass products, fire extinguishers and furniture. At present, all the bubble film machines adopt one-time forming process, which can continuously produce polyethylene composite bubble (cushion) film. The design of machine structure is scientific, practical and reasonable.