Carton incorporating easily openable and reclosable pouring aperture

Claim 2

A carton providing for a reclosable pouring aperture comprising side and end wall panels, pivoted extensions on said panels forming flaps for closing said carton, said closing flaps including outer and inner top closure flaps each extending from a respective side wall panel and dust flaps each extending from a respective end wall panel and underlying said closure flaps, the inner of said top closure flaps having weakening lines thereon running serially from one to another free edge thereof forming a severable end section in the corresponding end area of said flap, the dust flap underlying said end section being adhesively-bonded thereto and shaped in conformance therewith, the outer of said top closure flaps having a weakening line running from its pivoted edge transversely across the flap forming an end section thereon overlying the end section of said inner closure flap, the end section on said outer closure flap being severable along its weakening line for pivotal upward movement, the end section of said inner closure flap and dust flap adhesively-bonded thereto being severable along the weakening lines of the former for pivotal upward movement so as to form said pouring aperture, said aperture being reclosable by downward pivotal movement of said end sections and tucking of a free edge of the end section of said outer closure flap below an end area of said inner closure flap bordering its severable end section.

Claim 3

A carton as claimed in claim 1, including a finger-engageable recess formed in said inner closure flap end section and the dust flap adhesively-bonded thereto.

Claim 4

A carton as claimed in claim 1, including a lip portion formed on said inner closure flap along one weakening line thereof upon severing of the end section therefrom, a free edge of said end section of the outer closure flap being tuckable beneath said lip portion for effecting reclosing of said carton pouring aperture.

Claim 5

A carton as claimed in claim 1, the severable end section of said outer closure flap and said dust flap with the severable end section of said inner closure flap bonded thereto being hingedly joined to, respectively, a side wall and end wall panel of said carton for pivotal movement at substantially right angles to each other.

Claim 6

In a carton providing for a reclosable pouring spout for a generally free-flowing bulk commodity, said carton being formed of a semi-rigid material and having side and end wall panels, hinged extensions on said side wall panels forming inner and outer top closure flaps, and hinged extensions on said end wall panels forming dust flaps, the improvement wherein said inner closure flap includes an end section defined by a first weakening line extending across a portion of said flap from a free edge and in a direction normal to the hinge line thereof and joining a second weakening line running obliquely thereto and terminating at the juncture between said flap, the adjoining end wall panel and the dust flap extension on the latter, said extension being shaped to generally conform with the configuration of said end section on said inner top closure flap, said extension underlying said end section and being adhesively-bonded thereto; said outer closure flap including an end section defined by a weakening line extending across said flap in a direction normal to its hinge line, the end section of said outer closure flap overlying said extension and the end section of said inner closure flap and being separably adhered thereto in a sealed condition of said carton, the first weakening line on said inner closure flap and the weakening line on said outer closure flap being in a slightly offset relationship to render the latter end section longer than the former; whereby said carton is adapted to be opened to form said pouring aperture by pulling up said end section on said outer closure flap and severing the weakening line thereon and subsequently pulling up the end section of said inner closure flap and severing the weakening lines of the latter, said carton being reclosable by pushing down the end section of said inner closure flap, overlaying the end section of said outer closure flap and inserting a free edge on said last-mentioned end section beneath the inner closure flap, the end section of the outer closure flap being supported along a marginal edge thereof by a portion of the inner closure flap bounding its end section when the carton is reclosed.

Claim 7

In a carton providing for a reclosable pouring spout for a generally free-flowing bulk commodity, said carton being formed of a semi-rigid material and having side and end wall panels, hinged extensions on said side wall panels forming inner and outer top closure flaps, and hinged extensions on said end wall panels forming dust flaps, the improvement wherein said inner closure flap includes an end section defined by a first weakening line extending across a portion of said flap from a free edge and in a direction normal to the hinge line thereof and joining a second weakening line running obliquely thereto and terminating at the juncture between said flap, the adjoining end wall panel and the dust flap extension on the latter, said extension being shaped to generally conform with the configuration of said end section on said inner top closure flap, said extension underlying said end section and being adhesively-bonded thereto; said outer closure flap including an end section defined by a weakening line extending across said flap in a direction normal to its hinge line, the end section of said outer closure flap overlying said extension and the end section of said inner closure flap and being separably adhered thereto in a sealed condition of said carton, the first weakening line on said inner closure flap and the weakening line on said outer closure flap being in a slightly offset relationship to render the latter end section longer than the former; whereby said carton is adapted to be opened to form said pouring aperture by pulling up said end section on said outer closure flap and severing the weakening line thereon and subsequently pulling up the end section of said inner closure flap and severing the weakening lines of the latter, said carton being reclosable by pushing down the end section of said inner closure flap, overlaying the end section of said outer closure flap and inserting a free edge on said last-mentioned end section beneath the inner closure flap, the end section of the outer closure flap being supported along a marginal edge thereof by a portion of the inner closure flap bounding its end section when the carton is reclosed.

Claim 8

The carton structure as claimed in claim 5, including an edge recess formed in said dust flap extension and the end section of said inner closure flap adapted to facilitate finger-engagement thereof for severing same along its said weakening lines.

Claim 9

The carton structure as claimed in claim 5, wherein a lip is formed on said inner closure flap resulting from the end section thereof being severed along said second weakening line, the free edge of the end section of said outer closure flap opposite its hinge line being tuckable beneath said lip with a corner thereof leading upon reclosing of said carton.

Claim 10

The carton structure as claimed in claim 7, wherein said free edge defines a tab portion of the outer closure flap end section which is also defined by a bend line therein substantially aligning with the edge of said lip on said inner closure flap to facilitate the tucking of said free edge beneath said lip during carton reclosure.

Claim 11

The carton structure as claimed in claim 5, said inner and outer closure flaps being inseparably adhered together at their interfaces exteriorly of the severable end sections thereof.

Claim 12

The carton structure as claimed in claim 5 erected from a carton blank wherein the end wall panel having the dust flap extension conforming with the end section of said inner closure flap is disposed at one end of said blank.

Claim 13

The carton structure as claimed in claim 5 erected from a carton blank wherein the end wall panel having the dust flap extension conforming with the end section of said inner closure flap is disposed between the side wall panels of said blank.