Automatically controlled machine for making double-face, polymer plastic coated, corrugated paperboard

摘要

A polymer plastic coated paper double-facer corrugating machine equipped with web preheating cylinders having position adjustable wrap control arms is described having a variable response relationship between the machine production speed and a corresponding wrap control arm setting. The double facing nip of the machine is provided with a series coupled pneumatic loading spring and worm jack to set the nip clearance. For transitional support of double faced product between the load variable nip roll and the lower tractor belt of the double-faced board pulling section, an air table is provided.