Patent ID: 10150586

Abstract:
A blank for forming a carton includes a unitary substrate layer defining a primary axis and a secondary axis transverse to the primary axis. The substrate layer includes: a main panel having a side edge extending substantially parallel to the primary axis and an end edge substantially parallel to the secondary axis; an end outer panel connected to the end edge by a first fold line extending substantially parallel to the secondary axis; an end inner panel connected to the end outer panel by a second fold line extending substantially parallel to the secondary axis; a side outer panel connected to the side edge by a third fold line extending substantially parallel to the primary axis; a side inner panel connected to the side outer panel by a fourth fold line extending substantially parallel to the primary axis; a notch defined in a side edge of the end inner panel; and an integral tab extending from an end edge of the side inner panel adjacent the side edge of the end inner panel. The blank is configured to be erected into a carton by: folding the end outer panel relative to the main panel about the first fold line; folding the end inner panel relative to the end outer panel about the second fold line so that the end inner panel substantially faces the end outer panel and is deflectably spaced away from the end outer panel; folding the side outer panel relative to the main panel about the third fold line so that the side inner panel substantially faces the side outer panel, whereby a pocket is defined between the notch, the side outer panel, and the end outer panel; folding the side inner panel relative to the side outer panel about the fourth fold line so that the side inner panel substantially faces the side outer panel; and inserting the tab into the pocket to interlock the side inner panel and the end inner panel.