1. HDPE, LDPE, LLDPE film blowing machine. 2. Rotating die head 3. Three layer extrusion 4. Common-extrusion Extrusion Feature: The ... milk, drink. Performance and Characteristics: 1. Die head is layer type spiral mandrel, continuous 3600 rotation. 2. Screen pack changer ... be installed to the lies., such as length counting device, vertical cutting device, cooling water row pipe, film spreading roller, ...