Plastic closure with unitarily molded, foamed sealing layer

Details Plastic closure with unitarily molded, foamed sealing layer Plastic closure with unitarily molded, foamed sealing layer

1986-10-23

1988-05-17

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

215329, 215347, 215348, B65D 5300

Patent

active

047444789

ABSTRACT:
A molded polymeric container closure comprising at least one substantially unfoamed polymer layer and an integrally molded foamed layer of the same polymer.

REFERENCES:
patent: 1427133 (1922-08-01), Taliaferro
patent: 1898342 (1933-02-01), Cuthbert
patent: 3061130 (1962-10-01), Husum
patent: 3896959 (1975-07-01), Roy
patent: 4383620 (1983-05-01), Mumford
patent: 4407422 (1983-10-01), Wilde et al.

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