Package making – Methods – With contents treating
Patent
1990-04-30
1991-10-08
Sipos, John
Package making
Methods
With contents treating
53436, 53487, 53511, 53526, B65B 3100
Patent
active
050542664
ABSTRACT:
A vacuum packaging machine includes an elongated frame, packaging forming stations for forming a lower container and top or cover for a package, a vacuum seal and sizing station, a chill station and a cutoff or package separating station. The vacuum seal and sizing station includes an upper tool defining an upper chamber and a lower tool defining a container chamber. The lower tool is movable towards and away from the upper tool and defines a vacuum chamber therewith. A pressure and sealing bar disposed within the upper chamber is movable to seal the package top to the container. A platform is adjustably positionable in the container chamber to vary the volume or size of the vacuum chamber. A product sizing plunger carried by the upper tool engages and compresses the product placed within the container prior to application of a vacuum and sealing of the cover or top to the container.
REFERENCES:
patent: 3478488 (1969-11-01), Jensen
patent: 3498018 (1970-03-01), Seiferth
patent: 3971188 (1976-07-01), Cawrse
patent: 4034536 (1977-07-01), Mahaffy
patent: 4154044 (1979-05-01), Lang
patent: 4167092 (1979-09-01), Medwed
patent: 4201030 (1980-05-01), Mahaffy
patent: 4411122 (1983-10-01), Cornish
patent: 4684025 (1987-08-01), Copland
Mello Frank C.
Wyslotsky Ihor
Bil-Mar Foods, Inc.
Sipos John
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