What is power rail for corrugator? The mill roll stand track is used for the input and output of the raw paper at the mill roll stand. It’s suitable for roll diameter from 300mm to 1500mm. Besides, a discharging unit also can be added as your request. Pneumatically driven, it can remove the mill roll of the cart quickly, therefore reducing labor intensity and increasing work efficiency. LLY PACK provide high speed corrugated cardboard line, corrugated machine, production management system, logistic system and etc.