Package making – Gas filling and/or evacuating of receptacle and closing – Within enclosure
Patent
1975-06-23
1977-03-01
McGehee, Travis S.
Package making
Gas filling and/or evacuating of receptacle and closing
Within enclosure
53112R, B65B 3102
Patent
active
040095525
ABSTRACT:
A packaging device for forming a package having upper and lower sheets closed by the upper sheet being weldably secured to the lower sheet. The lower sheet is formed into a container for holding various types of material. The packaging device has an evacuating chamber having two chamber halves relatively movable with respect to each other. A nozzle bar is mounted on one of the chamber halves and is movable therewith toward and away from the other chamber half. A passageway is provided between the nozzle bar and the corresponding chamber half on which it is mounted and is adapted to receive the upper sheet therethrough. The lower sheet formed into a container is moved through a passageway between the two chamber halves when the chamber halves have been moved apart. A seal is provided around the nozzle bar and between the chamber halves to permit an evacuation of the evacuating chamber when the chamber halves are in mating engagement with each other.
REFERENCES:
patent: 2780043 (1957-02-01), Hensgen
patent: 3832828 (1974-09-01), Martin
Kramer & Grebe GmbH & Co. KG Maschinen-und Modellfabrik
McGehee Travis S.
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