Linerless closure

Details Linerless closure Linerless closure

1992-08-14

1993-11-09

Shoap, Allan N.

Bottles and jars

Closures

Cap type

215341, 215343, 215345, 215DIG1, 215252, 215307, B65D 5300

Patent

active

052595226

ABSTRACT:
A linerless plastic closure is configured for side-sealing engagement with an associated container. The closure includes a circular top wall portion, and an annular skirt portion depending from the top wall portion, and including an internal thread formation. A two-component side-seal arrangement is provided which includes a relatively rigid support annulus, and a relatively flexible sealing lip. The sealing lip is movable into a position for sealingly engaging a generally outwardly facing surface of an associated container, with the relatively rigid support annulus desirably acting to enhance the sealing effect of the sealing lip. Notably, the relatively rigid sealing annulus further desirably acts to provide a self-centering action for the closure during application to a container.

REFERENCES:
patent: 3203571 (1965-08-01), Plunkett
patent: 3255909 (1966-06-01), Miller et al.
patent: 3784041 (1974-01-01), Birch
patent: 3948405 (1976-04-01), Yonker
patent: 4061240 (1977-12-01), Brownbill
patent: 4090631 (1978-05-01), Grussen
patent: 4196818 (1980-04-01), Brownbill
patent: 4220250 (1980-09-01), Brownbill
patent: 4276989 (1981-07-01), Hicks
patent: 4450973 (1984-05-01), Toeppen
patent: 4497765 (1985-02-01), Wilde et al.
patent: 4526284 (1985-07-01), Herbert
patent: 4540102 (1985-09-01), Wiedmer
patent: 4549667 (1985-10-01), Dullabaun
patent: 4598835 (1986-07-01), Brownbill
patent: 4664280 (1987-05-01), Whitney et al.
patent: 5064084 (1991-11-01), McBride et al.
Drawing of an H-C Industries Closure first sold in the United States in Jan., 1991, dated Sep. 21, 1990.

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