Heating device for heat-sealing bottom portions of containers

Details Heating device for heat-sealing bottom portions of containers Heating device for heat-sealing bottom portions of containers

1999-02-24

2000-11-21

Gerrity, Stephen F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493133, 493164, 493165, B31B 164

Patent

active

061495662

ABSTRACT:
A heating device for heat-sealing bottom portions of containers has a hot air nozzle 62. The nozzle 62 is positionable as opposed to a bottom forming end portion 14 of a tubular blank 11 of square cross section as fitted around an intermittently drivable mandrel 52 for heating a region of the blank end portion. The nozzle 62 is movable toward or away from the end portion 14 on the axis of the blank 11. The nozzle 62 has orifices 101, 102, 131, 132, 133 directed toward a plurality of parts within the region when the nozzle is positioned close to the end portion. Among the orifices 101, 102, 131, 132, 133 of the nozzle 62, those 101, 131 directed toward the part of the region remote from an extremity of the blank when the nozzle is so positioned have a greater open area ratio than those 102, 133 directed toward the part of the region proximate to the blank extremity when the nozzle is so positioned.

REFERENCES:
patent: 3309841 (1967-03-01), Egleston et al.
patent: 3724093 (1973-04-01), Olila
patent: 3789746 (1974-02-01), Martensson et al.
patent: 3825408 (1974-07-01), Farfaglia et al.
patent: 4368095 (1983-01-01), Gross et al.
patent: 5230204 (1993-07-01), Hall et al.
patent: 5943840 (1999-08-01), Nilsson et al.

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