mini blown film machine as mini type of pe film blowing machine, its cylinder and screw rods are made of quality alloy steel that have been nitrizied and processed in a precision way. Hence it is sound in hardness, durable in corrosion resistance. The specially-designed screw is of sound quality in plasticizing, which helps increase the production capacity. The plastic film extrusion machine is applied to blowing the plastic films like low density polythene(LDPE),high density polythene(HDPE)and linear low density polythene(LLDPE).It is widely applied to producing the packing bags for foodstuff, clothing, rubbish bag and vest ones.