Machine for packaging a commodity integrally with a tray

Details Machine for packaging a commodity integrally with a tray Machine for packaging a commodity integrally with a tray

1981-03-12

1984-11-20

Culver, Horace M.

Package making

Methods

Enclosing contents within progressively formed web means

53463, 53550, 53379, B65B 910, B65B 5114, B65B 5120

Patent

active

044831250

ABSTRACT:
The packaging machine of the present invention is of the type in which successive trays moving along a conveyor line are enclosed in a continuous tube of plastic film which is thereafter severed between the trays to provide end flaps which are first pulled downwardly by suction forces and then folded upwardly against the bottom of the respective ends of the trays to seal the contents therein. A nozzle system placed near the location where the severing takes place pulls the severed portions of the tube downwardly between each adjacent pair of trays. The nozzle system is controlled by a valve system which teminates the downward pull as the severed portions are being folded upwardly against the bottoms of their respective trays.

REFERENCES:
patent: 3552088 (1968-07-01), Niwa
patent: 3886713 (1975-06-01), Mitchell et al.
patent: 3914917 (1975-10-01), Young
patent: 3973372 (1976-08-01), Omori
patent: 4134245 (1979-01-01), Stella
patent: 4144697 (1979-03-01), Suga
patent: 4183193 (1980-01-01), Klingelhofer et al.

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