Packaging machine

Details Packaging machine Packaging machine

1979-01-24

1980-12-30

McGehee, Travis S.

Package making

Gas filling and/or evacuating of receptacle and closing

53512, B65B 3106

Patent

active

042415586

ABSTRACT:
Apparatus for packaging articles in a controlled atmosphere, such as one created by a vacuum followed by the addition of gas, such as carbon dioxide, provided within a flexible container having an open end. The packaging apparatus includes a frame and a support one the frame for the flexible container, which is preferably supported within a rigid outer container, to maintain a substantially fixed position for the articles in the flexible container. A fixed elongated member or manifold is mounted on the frame and includes an upwardly and forwardly angled sealing surface. The fixed elongated member cooperates with a movable elongated member or manifold which is operatively mounted on the frame and includes a sealing face which is movable into cooperative relationship with the sealing surface of the fixed manifold. The movable manifold is movable between a position which is spaced from the fixed manifold and a second position which is adjacent or against the sealing surface of the fixed manifold. Vacuum openings are provided in the fixed manifold for holding the flexible container in place, particularly when the movable manifold is spaced from the fixed manifold. A mechanism is provided on the frame for moving the movable manifold between the spaced and adjacent positions relative to the fixed manifold. The manifold moving mechanism includes an over-the-center linkage for holding the movable manifold in the adjacent position. Snorkels or passage members are mounted on the frame for passage through the open end of the flexible container and into the flexible container for the purpose of creating a controlled atmosphere therein. The passage members are sealably positioned between and aligned with the sealing surface and the sealing face when the manifolds are adjacent each other and the snorkels are in the flexible container.

REFERENCES:
patent: 2749686 (1956-06-01), Lorenz et al.
patent: 2963838 (1960-12-01), Harrison et al.
patent: 3939624 (1976-02-01), Gidewall et al.

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