COMPENSATING DEVICE AND A METHOD AND A MACHINE FOR USING IT

摘要

The invention relates to a device (1) for producing container blanks (2) from a material web (3), which container blanks in the filled state form container of a collapsible type, said device comprising at least one sealing tool (7) with an extended rib (9), the sealing tool (7) being movable to bring the rib (9) into engagement with the material web (3) for joining opposite wall portions of the material web (3). The device is characterised by a compensating means (14) for ensuring abutment of the rib (9) along its entire length against the material web (3). The invention also relates to a method and a machine for producing container blanks.