Retortable container with easily-openable lid

US4890759A · kind A · utility

Assignee

• Aluminum Company of America · US

Inventors

• Theodore P. Scanga · Lower Burrell, US
• Matthew P. Kiley · New Castle, US
• Robert J. Metz · Canton, US
• Fred R. Schultz · Lower Burrell, US

Key dates

• Filing date: Jan 26, 1989
• Grant date: Jan 2, 1990
• Expiry date: Jan 26, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D17/4011
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

An easily-openable container lid made from a laminate material which includes a thick outer thermoplastic layer, a thin intermediate gas barrier layer, preferably of metallic foil, and a heat-sealable inner coating or film layer. A score line extends only partially through the outermost layer of this container lid to define an openable section thereof. The lid is further provided with a pull tab severing laminate material along its score line without delaminating, said tab being affixed to the openable lid section with a hollow, integrally-formed rivet. A retortable container and laminate lid combination is also disclosed.