Product Name: HDPE-LDPE Double-Purpose Film Blowing Machine SetPlace of Origin: ChinaFilm blowing printing connect-line set used for blowing low density polyethylene (LDPE) and high density polyethylene (HDPE) to make various vest bags and flat-rim bags Features and specifications: 1) Models: a) SJ-45FM-500 b) SJ-50FM-650 c) SJ-55FM-850 2) Cylinders and screws of the extruder are made of high quality alloy steel with optimum hardness and strong corrosion resistance after nitrogen treatment and precision finishing 3) Widely used for packing food, garments, and textiles