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US 4,405,056 AGranted
Container closure system with vent opening through the closure tape
AssigneeMinnesota Mining and Manufacturing Company
InventorRichard A. Patterson
Life of this patent
Estimating the term…
Abstract
An easy-openable tape closure for a container for gas-containing beverages and comprising an interior tape spanning a pour opening, an exterior tape sealed to the interior tape in the area of the pour opening and having a vent opening in the area of the pour opening. A pull tab is positioned over the exterior tape and sealed therethrough to the interior tape to provide means for rupturing the interior tape at the vent opening to vent the container.
Claims10
A container end assembly comprising:
- a container end with an interior surface, exterior surface and a pour opening therein, and an easy-opening closure system covering said pour opening comprising:
- an interior tape having an adhesive on one surface adhered to the interior surface of the container end and covering said pour opening,
- an exterior tape covering the pour opening and adhered therein to said interior tape, said exterior tape having a vent opening formed therein in the area of the pour opening and exposing the adhesive surface of the interior tape, said exterior tape being formed at one end beyond said opening with a pull tab covering a portion of said exterior tape and said vent opening, and said pull tab being secured firmly to the exposed adhesive of the interior tape at said vent opening in the exterior tape.
Dependencies are inferred from the claim text.