... is SJ-B45CYJ- PE Blowing and Offset Printing Line Machine 2. Blowing machine with printing machine USE: Its extruder, cylinder and screw rods ... is sound in hardness, durable in a corrosion resistance. The specially-designed screw is of sound quality in plasticizing, which ... density polythene (HDPE), it is widely applied to producing the packing bags for foodstuff, clothing, rubbish bag and vest ones ...