B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 35/10 (2006.01) B26F 3/00 (2006.01)
Patent
CA 2070088
1090-9 AN APPARATUS FOR SEVERING SECTIONS FROM A WEB OF MATERIAL PROVIDED WITH TRANSVERSE PERFORATION LINES ABSTRACT An apparatus is provided for severing sections from a web of material having transverse perforation lines and preferably from single or multiply tubular paper having transverse perforation lines. The apparatus consists of a retaining double belt conveyor and of a tear off double belt conveyor, arranged at a distance in the conveying direction downstream from the retaining double belt conveyor. In the retaining double belt conveyor the bend and or idler rolls or rollers of the conveyor belt or belts on the lower side of the web of material are offset in the longitudinal direction in relation to the bend in idler rolls on the top side so that the web of material passes through the retaining double belt conveyor in a corrugated manner. In the tear off double belt conveyor the conveyor belts are arranged on the lower and top sides of the web of material with an offset. In order to simplify the design, the idler rolls of the upper and of the lower conveyor belts of the tear off double belt conveyor are also positioned in relation to each other so that the web of material runs through the tear off double belt conveyor in a corrugated manner. The tear off double belt conveyor is driven at approximately the same basic speed as the retaining double belt conveyor. Intermittently the tear off double belt conveyor is driven at a higher speed when one or more transverse perforation lines are located at a point of severance between the retaining double belt conveyor and the tear off double belt conveyor.
Shapiro Cohen
Windmoller & Holscher
LandOfFree
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