Process and apparatus for gas purging of a bag being formed, fil

Details Process and apparatus for gas purging of a bag being formed, fil Process and apparatus for gas purging of a bag being formed, fil

1987-07-30

1988-09-13

Coan, James F.

Package making

Methods

With contents treating

53434, 53451, 53511, 53554, B65B 318, B65B 902

Patent

active

047699744

ABSTRACT:
For a form, fill and seal bagging machine a process and apparatus are provided whereby simultaneous with product discharged into the interior of the bag during the filling segment of the form, fill and seal cycle, a gas is also discharged into the interior of the bag to purge the interior of the bag and further, a low pressure area is created within the interior of the bag to remove excess purging gas and/or condensing fluids from the interior of the bag prior to sealing the bag.

REFERENCES:
patent: 2145941 (1939-02-01), Maxfield
patent: 2160367 (1939-05-01), Maxfield
patent: 3040490 (1962-06-01), Virta
patent: 3579945 (1971-05-01), Buchner et al.
patent: 3664086 (1972-05-01), James et al.
patent: 4241563 (1980-12-01), Muller et al.
patent: 4566249 (1986-01-01), Schwerdtel et al.
patent: 4617779 (1986-10-01), Nygren et al.

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