Atmosphere exchanging and bag sealing machine and method

Details Atmosphere exchanging and bag sealing machine and method Atmosphere exchanging and bag sealing machine and method

1977-09-01

1978-08-01

McGehee, Travis S.

Package making

Interrelated or safety controls

53 7, 53 79, 53112B, B65B 3106

Patent

active

041034716

ABSTRACT:
A machine and method which withdraws an atmosphere from a bag and substitutes a new atmosphere and thereafter seals the bag. More particularly, a bag is disposed around a manifold and the portions of the bag which extend outwardly from the manifold are heat sealed. Thereafter, the unsealed portions of the bag are temporarily sealed around the manifold, the atmosphere within the bag is exchanged and the bag is then completely sealed while the manifold is positioned within the open end of the bag.

REFERENCES:
patent: 2780043 (1957-02-01), Hensgen
patent: 3501888 (1970-03-01), Egli et al.

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