... extrusion stacking-type blown die, dual-lip cooling ring, IBC, Three-Layer Coextrusion Heavy Duty Blown Film Line is used for producing ... adopts a lot of new technique and technology such as three-layer-coextrusion stacking-type blown die, dual-lip cooling ring, ... , safety protection and startup protection.Film struction: 3 layers co-extruding A/B/CSuitable material: LDPE, LLDPE, HDPE, etcFilm width ( ...