Receptacles – Closures – Removable closure retained by adhesive or fusion means
Patent
1991-12-23
1993-09-21
Shoap, Allan N.
Receptacles
Closures
Removable closure retained by adhesive or fusion means
220270, 215232, 22912517, B65D 4100
Patent
active
052461343
ABSTRACT:
A press-on closure 10 for a tubular container 12. The closure includes a molded plastic frame 14 having a ledge 28 on which an end panel 16 is seated and to which the end panel is peelably secured. The end panel has a free outer peripheral edge unbonded to the frame. The resultant closed container is subject to retorting with the result that heretofore the end panel could axially outwardly deform and possibly initiate internal peeling. To prevent this peeling, the frame is provided with a thin flexible integral flange 36 forming a continuation of the ledge on which the end panel is seated. The end panel is also peelably bonded to the flange and the flange deforms or deflects with the end panel. The frame has a press fit onto the container, which is preferably in the form of a metal can, which at the end thereof to be closed by the closure is provided with a radially outwardly directed curl 48. The curl terminates in a raw edge 54 and is so shaped that when it is seated within a groove in the underside of the frame, the raw edge is embedded in a skirt portion of the frame to permanently and sealingly lock the curl within the frame.
REFERENCES:
patent: 2350950 (1944-06-01), Wiley
patent: 4650088 (1987-03-01), Hirota et al.
patent: 4856708 (1989-08-01), Giasi
Fraser Robert W.
Roth Donald J.
Sauer Donald G.
Holt William H.
Polystar Packaging, Inc.
Schwarz Paul A.
Shoap Allan N.
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