Lid with a pressure release hole and a removable seal, for vacuu

Details Lid with a pressure release hole and a removable seal, for vacuu Lid with a pressure release hole and a removable seal, for vacuu

1994-01-04

1995-08-08

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

End closure

428 63, 428 666, 264154, 264222, 264268, 264270, 215232, 215349, B32B 302

Patent

active

054397243

ABSTRACT:
A lid for sealing a container. The lid adheres to the container by a vacuum formed within the container. The lid is formed of a substantially circular panel having a flanged perimeter and a concave depression on an upper side of the circular panel. A pressure release hole extends through the concave depression of the circular panel and sanitary coating is disposed on a lower side of the circular panel. A first adhesive material is applied to the lower side of the lid by fusion to the sanitary coating to form a thin film over the release hole, and a second adhesive material is disposed in the concave depression on the upper side of the lid to form a removable seal. The second adhesive material has the same properties as the first adhesive material.

REFERENCES:
patent: 3183284 (1965-05-01), Haberlin
patent: 3606997 (1971-09-01), Guckel
patent: 3736899 (1973-06-01), Manske
patent: 3844861 (1974-10-01), Irish, Jr.
patent: 4130213 (1978-12-01), Wszolek
patent: 4227954 (1980-10-01), Ward et al.
patent: 4401534 (1983-08-01), Goepp et al.
patent: 4645557 (1987-02-01), Pedersen
patent: 4675139 (1987-06-01), Kehe et al.
patent: 4965035 (1990-10-01), Ishiwatari et al.
patent: 4971745 (1990-11-01), Ferenc et al.
patent: 4991731 (1991-02-01), Osip et al.
patent: 5137164 (1992-08-01), Bayer

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