... three layers film of HD/LD/LLDPE film blowing machineThree-layer Coextrusion Rotary Die Film Blowing Machine SetFunction: The lines are ... , fresh milk, drink, etc.Features: 1. Die-head adopts layer-type spiral mandrel which can rotate 360° Continuously. 2 ... as length counting device, vertical cutting device, cooling water row pipe, film spreading roller, scrap collecting device, etc.Main Technical ...