Hermetically sealed tray

Details Hermetically sealed tray Hermetically sealed tray

1982-03-18

1984-01-24

Ross, Herbert F.

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

220309, B65D 564

Patent

active

044271484

ABSTRACT:
A press-formed plastic coated paperboard tray is hermetically sealed by applying a hot melt or wax to indentations (e.g. relief depressions or wrinkles) formed in a flange of the tray at the corners of the tray. A film cover is then adhered to the tray over the flange and the hot melt or wax filling the indentations in the corner of the flange of the tray provides a hermetic seal for the interior of the tray and its contents, such as sterilized medical instruments, and precludes leakage of liquids housed within the tray.

REFERENCES:
patent: 3464832 (1969-09-01), Mullinix
patent: 3488201 (1970-01-01), Rizano
patent: 3580478 (1971-05-01), Berniss
patent: 3767108 (1973-10-01), Arneson
patent: 4019675 (1977-04-01), Andersson
patent: 4215797 (1980-08-01), Chen
patent: 4257530 (1981-03-01), Fuller
patent: 4351473 (1982-09-01), Manizya
patent: 4355755 (1982-10-01), Fuller

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