Double-head film blowing machine set used for blowing low density polyethylene (LDPE) and high density polyethylene (HDPE) to make various vest bags and flat-rim bagsFeatures and specifications: 1) Models: a) SJ-55FM-600 b) SJ-60FM-700 c) SJ-65FM-8002) 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 finishing3) Has two heads for one extruder with such advantages as increased production capacity, energy, labor, and space saving design4) Widely used for packing food, garments and textiles producing area:China payment:T/T, L/C