One piece blow molded plastic squeeze tube with an integral twis

Details One piece blow molded plastic squeeze tube with an integral twis One piece blow molded plastic squeeze tube with an integral twis

1997-11-03

1999-06-01

Cronin, Stephen K.

Bottles and jars

Neck

Frangible neck

215 42, 222107, 2225419, 264516, 264523, B65D 102, A61J 106

Patent

active

059081244

ABSTRACT:
A plastic tube with an integral finish and a twist off tab are blow molded. The twist off tab is connected to the finish of the tube by an annular groove forming a line of weakness. The tab is formed by the closing of mold halves about an extruded parison to form a flat twist off tab connected by a thin membrane to the exterior of the finish. The tab is then blow molded to form the tube. After the mold halves are opened, the twist-off tab is trimmed to provide the finished tube. The tab is formed by a conventional blow molding process without the need of a secondary operation. A plurality of blow molded corrugations are provided between annular blow molded ribs on the finish and provide added strength to the finish to facilitate removal of the tab.

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patent: 5076452 (1991-12-01), Hashimoto
patent: 5188250 (1993-02-01), Kovacic et al.
patent: 5431292 (1995-07-01), Culter et al.

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