Pull tab closure
AssigneeThe Continental Group, Inc.
InventorJerry D. Hawkins
Life of this patent
Estimating the term…
Abstract
A tape made of a laminate of thermoplastic plastic material and metal having a finger ring portion in which the edge of the hole is hemmed by folding the plastic portion upon itself and heat sealed to each other.
Claims7
A pull-tab comprising one elongated laminate member made of metal foil and thermoplastic film and having a body and a grasp section at one end of the body, said grasp section comprising a ring portion with a finger opening therein, a hem about the finger hole having a flange portion bent against the ring portion with the plastic film on the flange portion and the ring portion facing each other, and a heat bond between said portions forming an integral structure.
A pull-tab of the type adapted to be adhesively adhered to a container wall over a pour opening therein comprising;
- a flat laminate strip having a reverse side comprising a thermoplastic film and an obverse side comprising a tearable metal foil;
- said tab having a body part and a pull ring part adapted to be folded over said body part;
- said pull ring having a finger hole therein,
- a hem about said hole folded over said ring part with the plastic film on the hem overlapping the plastic film on the ring part,
- and means permanently bonding said film on the hem with the film on the ring part,
- said film being squeezed out between the hem and ring part to reduce the thickness of said film therebetween in the overlap.
Dependencies are inferred from the claim text.