Sealed end carton with reclosable pouring opening

Claim 2

A container for the storage and dispensing of pourable materials, the container being formed of sheet packaging material and having means defining a reclosable pouring opening, said means comprising: an inner sheet having a tongue defined by a cut line in the inner sheet, the base of said tongue being free of scoring and being liftable by bending against its inherent resiliency to form a pouring opening and returnable for frictional engagement with said inner sheet to close said pouring opening by pressure applied thereto; an outer sheet overlying and sealingly adhered to said inner sheet, said outer sheet having lines of weakness defining and being severable to provide a tab frictionally re-engageable with said outer sheet, said tab overlying said tongue and part of said inner sheet with its base overlying the base of said tongue, said tab being adhered to said tongue but substantially unadhered to said inner sheet so as to be hingedly liftable from said inner sheet; said container being openable by hingedly lifting said tab whereby said lines of weakness are severed and said tongue is hingedly lifted to form said pouring opening, and reclosable by pressing said tab against said inner sheet whereby said tab frictionally engages said outer sheet and said tongue is pressed into frictional re-engagement with said inner sheet, said lines of weakness defining said tab comprise a series of unconnected cuts constituting a zig-zag pattern extending to the edge of the outer sheet, a hinge crease or score line being provided at the base of said tab, said container is a box-shaped carton.

Claim 3

A container according to claim 1, wherein an area of said inner sheet adjoining said tongue and overlaid by said tab when said tab is in the closed position is coated with a layer of glue-repellant material.

Claim 4

A container according to claim 1, wherein an area of the inner surface of said tab not overlying said tongue is coated with a layer of glue-repellant material.

Claim 5

A container according to claim 1, wherein said inner sheet and said outer sheet are constituted by a first pair of opposite end flaps in which said tongue and said tab are disposed on opposite middle portions of said flaps, a second pair of opposite end flaps being dimensioned such that said tongue is disposed between inner edges of said flaps and is directly in contact with the interior of said carton.

Claim 6

A blank of sheet packaging material for assembly into a container according to claim 1, said blank comprising: a section divided by lateral and vertical score lines into a front panel, a first side panel, a rear panel and means foldable into a closure for a second side of said container, said means comprising a second side flap foldable into overlap with said first side flap or a second side panel and a glue flap foldable into overlap with said front panel; end flaps at each end of said front and rear panels and at each end of said first side panel and either at each end of said first and second side flaps or at each end of said second side panel, said end flaps being foldable to form a glue-end closure for said container; a first end or side flap having a tongue defined by a cut line in said flap, the base of said tongue being unscored and liftable by bending against its inherent resiliency to form an opening and frictionally re-engageable with said first end or side flap to close said opening by applied pressure; and a second end or side flap having a hingedly liftable tab of greater length and width than said tongue and defined by one or more lines of weakness formed such that said tab after severance of said lines of weakness is frictionally engageable with said second end or side flap, said second end or side flap being foldable to overlie said first end or side flap with said tab overlying said tongue and part of said first end or side flap, the base of said tab overlying the base of said tongue, said lines of weakness defining said tab comprising a series of unconnected cuts constituting a zig-zag pattern extending to the edge of the second end or side flap and having a hinge crease or score line provided at the base of said tab, said first and second end or side flaps being constituted by a first pair of opposite end flaps having said tongue and said tab disposed on opposite middle portions of said flaps, a second pair of opposite end or side flaps being dimensioned such that in the assembled and sealed carton the tongue is disposed between their inner edges and is directly in contact with the interior of said carton.

Claim 7

A blank according to claim 5, wherein an area of said first end or side flap adjoining said tongue and foldable to lie under said tab is coated with a layer of glue-repellant material.

Claim 8

A blank according to claim 5, wherein an area of said tab not foldable to overlie said tongue is coated with a layer of glue-repellant material.