Abstract: A multi-side container prepared from a single blank of paperboard includes a base panel foldably connected to a row of inner side walls. The base panel is also foldably connected to a row of outer side walls which encircle the inner side walls to form a double wall construction. A lid panel is foldably connected to the outer side walls and is bonded to the outer side walls. A tear line crosses at least some of the outer side walls separating an upper portion of the outer side walls from a lower portion. The tear line is capable of being broken to form a recloseable lid comprising the lid panel and upper portions of the outer side walls.

Abstract: A multi-sided container for storing and heating food prepared from a blank of paperboard includes a bottom panel and upstanding end, corner and side walls. A first set of angular panels are connected to the corner walls and the base panel. The first angular panels overlap and are bonded to the base panel. A second set of angular panels are connected to the first angular panels and to the end walls. The second angular panels overlap and are bonded to the end walls. Vertical flange extensions extending from the corner walls and the second angular panels overlap and are bonded together with the raw edges facing away from the container.

Abstract: An improved technique for uniformly distributing crisping or browning heat supplementation in disposable paper food carton or containers and the like used for microwave cooking, in which a metallized susceptor film is employed mounted to but intermediately spaced from the adjacent inner wall of the container to define and seal an air pocket which, in heating, improves the uniformity of the browning result through convection into air pocket and responsive flexing of the film.