Method and apparatus for vacuum packaging

Details Method and apparatus for vacuum packaging Method and apparatus for vacuum packaging

1988-03-22

1989-07-04

Coan, James F.

Package making

Methods

With contents treating

53468, 53512, 53571, B65B 3102

Patent

active

048437964

ABSTRACT:
The invention relates to a method and apparatus for vacuum-packaging material in a soft flat packaging bag. Packaging bags filled with a material are supported in a plurality of holders in advance in a place other than a plurality of vacuum chambers adapted to be intermittently rotated along a circular path. Such holders are successively fed to the vacuum chambers. While a vacuum chamber which has been fed with such holder is rotating along the circular path, this vacuum chamber is evacuated, the opening section of the packaging bag is sealed and then the vacuum chamber is opened to the surrounding atmosphere. And the packaging bag which has completed vacuum packaging is withdrawn from the vacuum chamber. Since the vacuum chamber is fed with a relatively large-sized holder rather than a soft flat bag which is difficult to handle, errors in feeding are avoiding.

REFERENCES:
patent: 3958391 (1976-05-01), Kujubu
patent: 3982376 (1976-09-01), Ikeda
patent: 4550548 (1985-11-01), Owensby et al.
patent: 4580393 (1986-04-01), Furukawa
patent: 4723392 (1988-02-01), Takeda

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