Heat treated plastic closure

Details Heat treated plastic closure Heat treated plastic closure

1995-02-06

1997-10-07

Cronin, Stephen

Bottles and jars

Closures

Frangible member or portion

B65D 5300

Patent

active

056738080

ABSTRACT:
A container closure assembly and method for providing same. The container has an access opening and a container rim surrounding the access opening. A plastic cap covers the access opening and includes an upper portion, a skirt depending from the upper portion and circumferentially covering the container rim, and a tamper ring depending from said skirt, wherein the tamper ring is preferably connected to the skirt by a plurality of tabs separated by open portions, whereby the tamper ring is disengaged from the skirt by twisting the cap and breaking the tabs. The tabs comprise a crystallized, brittle portion, whereby breaking the tabs is facilitated.

REFERENCES:
patent: 2423582 (1947-07-01), Coleman
patent: 4206851 (1980-06-01), Ostrowsky
patent: 4369889 (1983-01-01), Ostrowsky
patent: 4394918 (1983-07-01), Grussen
patent: 4907709 (1990-03-01), Abe et al.
patent: 4930647 (1990-06-01), Dutt et al.
patent: 5325976 (1994-07-01), Valyi et al.

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