Patent ID: 8146743

Claim:
A cardboard package comprising: a first exterior wall; a second exterior wall located to meet the first exterior wall at a first corner; and a punch-in device located in the vicinity of the first corner, the punch-in device comprising: a first perforation extending across the first corner and at an angle to the first corner, a second perforation extending across the first corner and at an angle to the first corner, a first fold line generally parallel to the first corner and extending at least from the first perforation to the second perforation, a second fold line generally parallel to the first corner and extending at least from the first perforation to the second perforation, a third fold line generally parallel to the first corner and extending at least from the first perforation to the second perforation, and a fourth fold line generally parallel to the first corner and extending at least from the first perforation to the second perforation; wherein: the cardboard package is moveable between an open position and a closed position; when the cardboard package is in the closed position the first exterior wall is exposed to the outside at least in the vicinity of the first corner; and when the cardboard package is in the closed position the second exterior wall is exposed to the outside at least in the vicinity of the first corner.