DUAL BELT CONVEYOR FOR HANDLING A MULTI-PLY CONTINUOUS PAPER TUBING

摘要

A dual belt conveyor for a multi-ply continuous paper tubing having adhesive-bonded longitudinal seams disposed in the intermediate regions of the upper plies preferably precedes a tear-off dual belt conyeyor which is operated at a higher speed. The preceding dual belt conveyor serves to retain the last but one length section of the continuous paper tubing, which is provided with transverse perforation lines, when the transverse perforation line at which the tubing is to be severed is disposed between the two dual belt conveyors. The reversing pulleys and backing rollers for the conveyor belt or belts on the underside of the path for the continuous paper tubing are longitudinally offset from the reversing pulleys and backing rollers disposed of the upper side of said path so that the continuous paper tubing is moved through the dual belt conveyer along an undulating path. The rear reversing pulley or pulleys for the upper conveyor belt or belts are so arranged in front of the rear reversing pulley or pulleys for the lower conveyor belt or belts that the upper conveyor belt or belts will contact the incoming continuous paper tubing before the lower conveyor belt or belts .