초록 ▼

A tearstrip opening for the closure flap of a paperboard container is formed by a single line of tear and an adjacent delamination area located within the closure flap. The tearstrip is applied to one or more of the closure flaps of the container as required. The tearstrip is removed by the combined

A tearstrip opening for the closure flap of a paperboard container is formed by a single line of tear and an adjacent delamination area located within the closure flap. The tearstrip is applied to one or more of the closure flaps of the container as required. The tearstrip is removed by the combined action of separation of the paperboard along perforations which define the single line of tear and ply separation of the paperboard adjacent to a partial depth cut line of weakness spaced from the single line of tear. When removed, the tear strip releases the closure flap from a side wall of the container while leaving a portion of the closure flap still attached to the side wall.

대표청구항 ▼

A paperboard container including at least one closure flap, said closure flap having an inner surface and an outer surface wherein the inner surface of said closure flap is adhered to a panel of said container to close the container, the improvement comprising means for opening said container, said

A paperboard container including at least one closure flap, said closure flap having an inner surface and an outer surface wherein the inner surface of said closure flap is adhered to a panel of said container to close the container, the improvement comprising means for opening said container, said opening means further comprising a removable tear strip incorporated into the closure flap, said tear strip being defined along one edge by a single line of perforations cut through the thickness of the paperboard and along another edge by a partial depth cut line of weakness applied to the inner surface of the closure flap, wherein removal of said tear strip to open the container is accomplished by the combined action of a separation of the paperboard along the single line of perforations and a delamination of the paperboard at the outer surface of the closure flap adjacent to the partial depth cut line of weakness.