Abstract:
A unitary blank for forming a packaging container for a heavy article such as a motor is disclosed, the blank including opposed vertical side and end wall panels, and top and bottom flaps connected with each of the panels, respectively, characterized by the provision in the fold lines between each of a pair of opposed panels and at least one of the flaps connected thereto an H-shaped cut, which cut straddles the fold line and defines a pair of opposed binding tabs generally facing the fold line, whereby when the flap is folded to a horizontal position and the tabs are foldably displaced inwardly, a recess is formed in the edge between the panel and the associated flap for receiving a binding strap arranged circumferentially about the container. Preferably, each H-shaped cut is so arranged relative to the fold line that the binding tabs are of unequal length, so that when they are foldably displaced inwardly, the adjacent edges of the binding tabs overlap, whereby the binding tabs serve both to stabilize the article in the container, and to protect the article against damage by the binding tab. The container blank, which is preferably formed of corrugated fibrous material, may include precrushed portions arranged beneath the binding strap.