Method and apparatus for vacuum packaging

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

1993-07-12

1995-02-07

Larson, Lowell A.

Package making

Methods

With contents treating

53 95, 53512, B65B 3102

Patent

active

053866789

ABSTRACT:
The track for a pressure chamber overlaps the track for a clamper in movement while clamping a bag filled with an article, at a position beneath the latter track and with a level difference. The bag supported by the clamper is held, at its upper edge positioned right below the clamper, between the upper side of a chamber body of the pressure chamber and the upper side of a cover and in a sealed condition. The air in the bag is expelled through a notched line formed in an upper portion of the bag as the pressure within the pressure chamber is reduced, and then the bag is sealed at a position below the notched line.

REFERENCES:
patent: 3910009 (1975-10-01), Canfield
patent: 3958391 (1975-05-01), Kujubu
patent: 4538399 (1985-09-01), Muller
patent: 4580393 (1986-04-01), Furukawa
patent: 4586320 (1986-05-01), Takai et al.
patent: 4723392 (1988-02-01), Takeda
patent: 4754596 (1988-07-01), Yasumune et al.
patent: 4843796 (1989-07-01), Furukawa
patent: 5009060 (1991-04-01), Furukawa
patent: 5062252 (1991-11-01), Kupcikevicius
patent: 5119615 (1992-07-01), Kujubu et al.

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