Abstract: A box having side walls (10, 12, 14, 16), a first set of panels (20, 22, 24, 26) along the top edges of the side walls and a second set of panels (28, 30, 32, 34) along the bottom edges of the side walls. The first set of panels overlap one another to form a box top and the second set of panels similarly overlap to form a box base. The first set of panels are so shaped that the box top has some areas which are above the level of the remainder of the top. The panels forming the box base also provide areas which are above the level of the remainder of the base. Said areas of the top and base are of the same shape and layout so that when two boxes are stacked, said areas of the top are received in said areas of the base.

Abstract: A liquid container sealing construction comprises a container body having at least one open end surrounded by a marginal edge thereof and an end closure member closing the open end of the container body. The container body is coated on its inner surface with a heat sealable thermoplastic material. The end closure member includes a peripheral flange coated on its outer surface with a heat sealable thermoplastic material. The peripheral flange and the marginal edge jointly provide a contacting portion where they are intimately fused and united together by the heat sealable thermoplastic material, and also provide a portion where they are held out of contact with each other, the latter portion being located adjacent to the turned edge of the flange. There are also provided a method and apparatus for sealing the liquid container with the end closure member.

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 container formed from a one-piece blank of sheet material by folding parts of the blank relative to each other. The container is closed by adhering a glue flap provided on one of its sidewalls, to another opposite sidewall.

Abstract: An expandable container, formed of a unitary blank of paperboard, including a planar base panel and a plurality of planar fins foldable over the panel to enclose a conical volume. The fins serially overlap and are self-locking in the closed position, and are expandable into the open position by a force exerted from the inside thereof. Such a force can be provided by the popping of corn kernels located therein when the container is heated in a microwave oven. The fins each are trapezoidal in shape, have an interior fold line separating each into a triangular area and a parallelogram shaped area, and are hingedly coupled to the next two adjacent fins.

Abstract: A closure construction for a hexagonal or octagonal container utilizing hinged closure panels having integral tuck-in flaps.

Abstract: Disclosed is a carton which is especially adapted for heating food products such as pizza, in microwave ovens. The bottom surface of the carton is cut to provide a plurality of tabs, which when bent from the carton, provide legs which space the bottom of the carton from a shelf in the oven, thereby allowing moisture vapor generated during heating to escape. According to a preferred embodiment, a moisture barrier film is releasably adhered to the bottom surface of the carton and a plurality of tabs so that, upon removal of the film prior to heating, the tabs are bent into their operable support position and the vent holes are opened.

Abstract: A tray-type container and a method of forming the same container is disclosed which is formed from a single blank of paperboard having a coating of a heat sealable film material so as to provide when fully set up, a rectangular bottom wall forming panel with hingedly connected upstanding sidewall and end wall forming panels which are integrally connected at the corners by pairs of triangular web members folded upon each other and against the outside faces of the end walls where they are secured by narrow top edge reinforcing and stiffening strips folded downwardly of the top edge into overlying relation with the top portions of the folded web members and the end wall, which reinforcing strips are heat sealed to corner connecting tab members folded with the corner web members into position beneath the strips.

Abstract: A knock-down container assembly for packaging and containing ice-cream products wherein an articulated carton portion co-operates with an articulated cover portion through closure features which effectively lock the cover portion in place on top of the carton portion. Various protuberances or locking flaps in the carton portion co-operate with recesses or notched regions in the cover portion respectively to provide these locking features. The carton itself is constructed to contain either a standardized half-gallon volume of ice-cream products or, alternatively, is capable of containing a one-quart volume of such products, and the container is especially adapted for utilization on standard existing ice-cream product packing machinery.

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.

Abstract: A two part paperboard container having adjustable vents is described and is intended for use with a sublimable composition. The container consists of an inner tubular member and an outer tubular sleeve member both of a truncated conical configuration. The inner tubular member, which is adapted to receive the sublimable composition, is in turn disposed within the outer sleeve member. The outer surface of the inner member is in frictional engagement with the inner surface of the outer sleeve member which functions to seal the carton. The inner member may be rotated relative to the outer sleeve member to at least partially align die cuts, provided in the walls of the tubular members, thereby exposing the composition to the air enabling it to sublime. Continued relative rotation of the tubular members will reset the die cuts in a nonaligned position thereby resealing the container.

Abstract: A container of pilfer-proof construction formed from a single blank of fiberboard cut, scored and folded together in such a way that the closure panels thereof are locked inside of the container at inaccessible locations. Lock flaps on the top closure panel are securely held in place by lock tabs thereon engaged between multiple wall segments of the container end walls.

Abstract: A covered box structure formed of sheet stock, comprising a box member and a cover member, the box member comprising a plurality of side walls and a bottom wall, the upper edges of the side walls having integrally connected cuff portions extending downwardly from the free edges of the side walls along the exterior faces of the side walls, each cuff portion being integrally connected with at least the cuff portion of one adjacent side wall, the cover member comprising a top wall and downwardly extending side walls, at least two side walls of said cover member having downwardly depending flaps which are inwardly and upwardly foldable, whereby they may be disposed between the corresponding side wall and associated cuff portion of the box member for interlocking the cover member to the box member, and forming hand-gripping portions thereat.

Abstract: A self closing carton or container is formed from a blank of sheet material which folds together to form the elongated carton having a triangular cross section with self closing end flaps. The blank includes four adjacent rectangular side panels of substantially equal size, the outer two side panels being overlapped to thereby form the triangular cross sectional configuration of the carton. Triangular end flaps, with tab receiving slots, extend from the lateral ends of one rectangular side panel. At each lateral end of the next adjacent side panel is a pair of interconnected triangular end flaps, at the remote end of which is an outwardly extending tab. Each pair of end flaps can be folded over a respective first triangular end flap, whereby each tab locks into its corresponding slot.

Abstract: Container suitable for use in fast food operations which permits longer storage of food products therein while maintaining good quality. Projections are provided on the base of the container to permit air circulation between a prepared food product and prevent deterioration thereof.

Abstract: A tray-type container and a method of forming the same is disclosed wherein the container is formed from a single blank of paperboard having a coating of a film material which will withstand oven temperatures commonly employed in bakeries, the container having, when fully set up, a rectangular bottom wall forming panel with hingedly connected upstanding sidewall and end wall forming panels which are integrally connected at the corners by pairs of triangular web members folded upon each other and against the outside faces of the inner end wall panels where they are secured by outer end wall panels hinged to the top edges and folded downwardly into overlying relation with the folded web members and the inner end wall panels, which outer end wall panels have marginal strips turned under the bottom wall and sealed to end margins of the latter.

Abstract: A bottle carrier carton partition arrangement having a pair of partition elements with overlapping portions to provide a two-ply thickness between adjacent bottles.

Abstract: A collapsible large size shipping container of a type which may be conveniently collapsed after use for return to a shipping source for reuse. In lieu of the usual wood or plastic pallet which forms a base for the container, a solid or corrugated fiber sheet, the free edges of which extend outwardly of the body of the container forms both a bottom of the container, and a means for forklift engagement.

Abstract: A flat planar lid for ovenable containers is described which is uniquely shaped to permit the lid to be manually secured to a flanged ovenable container thereby effectively closing and sealing the flanged container without the need to use automatic sealing equipment. The planar lid is shaped to provide a longitudinal tab overlapping each longitudinal edge of the container, a transverse tab overlapping each transverse edge of the container, and a corner tab overlapping each corner of the container. These tabs of the lid are tucked over the container flange and adhesively bonded to the underlying surface thereof. Venting is provided to permit a mechanism for venting internal steam to the atmosphere when the container and its contents are heated. The corner tabs have a lesser outboard reach than the outboard reach of either the longitudinal or transverse tabs to provide a smooth and substantially flat adhesive bond with the underflange surface.

Abstract: An improved drum closure assembly which includes a ring member and a cover member, the cover member being cooperatively sized for a fitted, overlapping relationship with the ring member. The ring member comprises outer and inner ring portions which are angularly displaced from parallel to one another. The cover member includes a top cover member and an annular wall member designed to abut the outer ring portion of the ring member and to seal the assembly when in use.