Name:SJ-45X3/FM 1000 SJ-50X3/FM 1200 SJ-55X3/FM 1500 Three-layer Common-extruding Rotary Die film blowing machine Characteristics: 1.Die head is layer type spiral mandrel, continuous 3600 rotation. 2.Screen pack changer design is reliable, safe in operation and change the fitter screen easier. 3.Various functional parts may be installed to the lies.,such as length counting device, vertical cutting device, cooling water row pipe, film spreading roller, scrap collecting device.