VERFAHREN UND GERÄT ZUM HEISSSIEGELN

摘要

A method for heat sealing a plurality of sheets passing through a space between a seal roller and an opposing roller which is opposingly provided to the seal roller, the method comprises the step of providing a plurality of seal rollers which are provided with seal blades to the opposite roller and sealing the same part of the sheets at least twice. A heat seal apparatus comprises a plurality of seal rollers (11-13) having seal blades and an opposing roller being in contact with all the seal rollers.