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US 4,445,620 AGranted
Tamper-proof closure for container
AssigneeMinnesota Mining and Manufacturing Company
InventorsWilfred R. Brochman, Richard A. Patterson
Life of this patent
Estimating the term…
Abstract
A tape closure comprising a two-tape closure system for a pour opening in a container wherein the pull tab for the closure is secured to the container end by a rupturable nonresealable holddown.
Claims4
A container end assembly comprising:
- a container end having a preformed pour opening, an interior and exterior surface, 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 said pour opening and adhered to said interior tape in the area of said pour opening and being adhered to the exterior surface circumjacent said pour opening,
- a pull tab secured to said exterior tape at one end thereof which extends over said exterior tape, and
- rupturable means for holding said pull tab to the exterior tape to define a tamper-proof seal for the pull tab.
2 more elements
A container end assembly comprising:
- a container end having a preformed pour opening, an interior and exterior surface, 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 said pour opening and adhered to said interior tape in the area of said pour opening and being adhered to the exterior surface circumjacent said pour opening,
- a pull tab secured to said exterior tape at one end thereof which extends over said exterior tape, and
- rupturable means for holding said pull tab to the exterior tape to define a tamper-proof seal for the pull tab, said rupturable means comprising a folded end of said exterior tape forming a narrow band which is firmly bonded to said pull tab and wherein said band is joined to said exterior tape by a weakened fold line.
2 more elements
A container end assembly comprising:
- a container end having a preformed pour opening, an interior and exterior surface, 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 said pour opening and adhered to said interior tape in the area of said pour opening and being adhered to the exterior surface circumjacent said pour opening,
- a pull tab secured to said exterior tape at one end thereof which extends over said exterior tape, and
- rupturable means for holding said pull tab to the exterior tape to define a tamper-proof seal for the pull tab, said rupturable means comprising a length of said exterior tape opposite said one end which is bonded to said pull tab and which is joined to said exterior tape along a weakened line.
2 more elements
Dependencies are inferred from the claim text.