Air extraction apparatus for continuous package making

Details Air extraction apparatus for continuous package making Air extraction apparatus for continuous package making

1992-06-17

1994-05-17

Sipos, John

Package making

With contents treating

Vacuum or inert atmosphere

53550, B65B 906, B65B 3104

Patent

active

053117263

ABSTRACT:
The present invention relates to an improved air extraction apparatus for continuous package making. More particularly, the present invention relates to an improved air extraction apparatus that continuously packages a continuous succession of objects in a continuous length of heat-sealable packaging film. The apparatus extracts air from the packaging film that has been folded in a manner so that margins along opposite longitudinal edges of the film form a seam with two overlapping flaps for heat sealing, wherein just ahead of a heat sealing station, the improved apparatus of the invention extracts air from between the film flaps.

REFERENCES:
patent: 2410834 (1946-11-01), Messmer
patent: 2763107 (1956-09-01), Day et al.
patent: 3274746 (1966-09-01), James et al.
patent: 3553933 (1971-01-01), Seko
patent: 3619975 (1971-11-01), Johnson et al.
patent: 3701229 (1972-10-01), Zelnick
patent: 3745742 (1973-07-01), Tartarini
patent: 4170863 (1979-10-01), Schwanz
patent: 4272944 (1981-06-01), Suga
patent: 4663915 (1987-05-01), Van Erden et al.
patent: 5052166 (1991-10-01), Ziegler et al.

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