To improve hermetic sealing stability of a head part of a container by holding an opening shape and a folding shape of an opening top part as well as its position constant so that a stable relative position is always obtained between a top heater nozzle part of a heater nozzle apparatus for heat-sealing the top part used for heat-sealing the top part of a paper-made container for liquid packaging, and a heating site on the top part of each container main body carried.
The heat air nozzle apparatus comprises: a first top heat air nozzle part 11 for heating the inner face from the inside of the opening top part 2 of the container 1; a second top heat air nozzle part 12 for heating the outer face from the outside thereof; and a plurality of positioning taps 13 having reverse V-shaped recessed parts provided at the tip end for positioning into which parts the individual upper end edges of folded sticking plates and mating sticking plates for butt integrally filled between opposing air nozzle parts of both top heat air nozzle parts are inserted, the part 11, such that the part 11, the part 12, and the taps 13 are provided above the top part 2 vertically movably.
COPYRIGHT: (C)2007,JPO&INPIT
