VERTICAL MOLDING AND CHARGER

摘要

PURPOSE: To make the strength of a horizontal seal in a pouch more uniform by a method wherein one end of a vertical form and fill machine can be moved in the lateral direction and has a pair of transverse heat sealing jaws adapted to collapse a tubular film, a detention chute being disposed under said jaws. CONSTITUTION: A flat edge portion 34 of a tubular film 19 is passed between jaws 35 and 36. The jaws 35 and 36 are closed and a front wall 25 and a rear wall 26 of the tubular film are pushed between an impulse sealer 38 and pad 40. A knife blade 41 is then pushed strongly passing through the edge portion 34 of the tubular film to form a slit. The electric impulse sufficiently heats the impulse sealer 38 to seal an inner layer of the tubular film. After the tubular film 19 is sealed in the lateral direction and cut by a tubular seal element 49 to form a pouch, the heat seal element 49 is fallen by its empty weight as far as the pouch collecting part through a chute 92 defined by roller assemblies 81 and 82.