Packaging container having a pressure relief valve

Details Packaging container having a pressure relief valve Packaging container having a pressure relief valve

1986-04-28

1987-03-31

Hall, George T.

Receptacles

Closures

With condition responsive vent or valve

220367, 220359, 383103, B65D 5116

Patent

active

046536612

ABSTRACT:
A packaging container having a pressure relief valve which is suitable for packaging products that are vulnerable to oxygen and products that give off gases. The packaging container has at least one rigid and flat wall, which is surrounded by an offstanding peripheral flange and on the outside surface of which the pressure relief valve is secured. The pressure relief valve has a flexible membrane, which is secured on the wall in opposed peripheral zones by means of two adhesive strips. With its middle zone, the membrane defines a path and covers an opening in the wall. The opening is located in an indentation by means of which a pressure-action surface of the membrane is provided. A film of oil may be added in the middle zone to assist in preventing entrance of air into the container.

REFERENCES:
patent: 2173571 (1939-09-01), Jesnig
patent: 2927722 (1954-11-01), Metzger
patent: 3369859 (1968-02-01), Cornelius
patent: 3621876 (1971-11-01), Campbell
patent: 3716180 (1973-02-01), Bemiss et al.
patent: 4210255 (1980-07-01), Pan

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