The local use of high-pressure polyethylene (LDPE) or low-pressure polyethylene (HDPE) as raw material, heating, extrusion, inflation, stretching, coiling cylinder after the fait accompli film, by cutting, sealing bags made from food packaging, shopping bag or woven bag lined with the bag, can also be unilateral or stretching on both sides when cutting, coiling after the artificial plastic sheeting, plastic film and greenhouse film.
Screw extruder barrel nitriding alloy used 38CRMOA1A; extruder parts and tensile traction stepless speed regulation. The outer surface of drive roller of all hard chrome plating; durable.