film machine of Model SJ45-400 is designed for small bag production. Some t-shirt bag and rectangular bag is less than 30CM. film machine,film blowing machine,film extruder,film machinery,blown film machine:Use: Raw materials of this machine should be selected LDPE, index in 4.5-5.5, widely applying to high gradepacking of food, sugar, medicine, jewelry, clothing, metal fittings, documents, ...