Abstract: A carton having a plurality of unequal compartments or cells is formed from a single, unitary, paperboard blank. The carton can be folded flat for shipping and storage. It can be erected by pulling outward on two opposite corners or side edges. Internal dividers move into place automatically as the box is erected and produce internal compartments of unequal sizes.

Abstract: A replaceable lid for a flanged tray in which the lid has opposed slide channels to receive the tray flanges in order to permit the lid to slide off the tray and be reapplied to the tray. A tamper resistant safety tab may also be provided to prevent tampering with the contents of the tray when the tray is on a shelf. The lid is made of a single blank having two panels with one of the panels having an opening to receive the tray and the other panel being folded over the first panel of the tray and adhered to the first panel along its outer edges.

Abstract: An expandable container in the form of a cup made from a unitary blank of paperboard. The container has a bottom panel and four side panels and the paperboard is coated so the container can receive a liquid, such as soup, therein. A sidewise pressure exerted on the side panels downwardly expands the bottom panel to increase the depth of the container for the reception of the liquid. In one embodiment, the bottom panel has a plurality of curvilinear fold lines to allow the downward expansion. In a second embodiment, the bottom panel has a plurality of straight fold lines for this purpose.

Abstract: A carton and the blank for forming same each have a plurality of wall members mounted on a base member. Adjacent ends of respective wall members are secured together by the engagement of tabs extending from and hingedly coupled to longitudinal ends of one set of opposed wall members and of cover and tuck flaps hingedly mounted on the remaining wall members. The cover flaps overlie the tabs to entrap them between the one set of wall members and the cover flaps. The tuck flaps are secured in tuck slots in the base member below the one set of wall members to lock the wall members in place. This permits partial assembly of the carton to enable shipping and storing in a flat configuration, and final assembly at the place of filling without the use of glue.