... the anti-shock air bubble , 2)wrap electric equipment,furniture like camera, 3)3-5 layers bubble film making machineUsageThis machine ... uses LDPE, LLDPE granule material to produce air bubble film, which widely used as post parcel packing, precise ... packing etc. FeatureThis machine is composed of extruder, air bubble forming device, perforation device, edge trimmed film collecting device, ...