Abstract: A composite container including a peelable patch top closure assembly, and a method for forming the same, are disclosed, including a tubular composite body member reversely outwardly curled at one end, a generally disk-shaped membrane patch top member extending across the reversely curled body end to close the same, and a heat sealable coextrudable synthetic plastic film laminate bonding the patch top member to the reversely curled body end, the coefficient of adhesion between the laminate layers being less than that between the laminate layers and the adjacent surfaces of the associated members, respectively.

Abstract: A molded paper pulp container comprising a pocketed section mutually hinged to a flat bottom cover section, both said sections comprising tapered walls bordering on said hinge, the external surfaces of said tapered walls bordering on said hinge comprising projecting abutting elements cooperating together to limit the inverted folding around said hinge. The molded paper pulp containers, mainly egg cartons, may be stacked in their flat open condition with the bottoms of the cover sections of a number of stacked containers maintained parallel thus allowing easy unstacking by mechanical devices such as suction-cups equipped unstackers.

Abstract: A carton, erected from a one-piece paperboard blank, includes an unobtrusive hanging panel strengthened by a reinforcing panel, the hanging panel initially being attached to the bottom of a carton by side flaps. In order to hang the carton the hanging panel is swung away from the carton by breaking score lines. After the carton has been opened the hanging panel may be used as a recloseable tuck.

Abstract: A carton for releasing an active material, such as an air freshener, to the atmosphere includes an outer imperforate sleeve slidably receiving in nesting relation an inner sleeve housing an air freshener cake. The inner sleeve has a plurality of openings for exposing the cake of air freshener material to the atmosphere as the openings are selectively exposed by sliding the inner sleeve relative to the outer sleeve. The inner sleeve is slidable between a first position defined by abutment with the scaled closure of the outer sleeve and a second position intermediate the end containing the sealed closure of the outer sleeve and the opposite end thereof so as to selectively expose certain ones of the openings in the inner sleeve. The inner sleeve contains a sealed closure having a panel extending outwardly beyond the side panels thereof for contact with a pair of locking tabs on the bottom edge of the outer sleeve to preclude disassembly of the first and second sleeves.

Abstract: A self-locking, reusable carton is formed from a unitary blank of paperboard. The carton and blank have self-locking end closure flaps which are hingedly coupled to adjacent end edges of the side panels of the carton. The closure flaps include two flaps with L-shaped slits formed therein and a locking flap free of fold lines with a locking tab at the free end thereof. During assembly the locking flap is forced downwardly to place the locking tab in the L-shaped slits to lock the carton in its fully assembled configuration.

Abstract: A self-locking, reusable carton, formed from a unitary blank of paperboard, comprising a tubular body portion, a plurality of top closure flaps and a plurality of bottom closure flaps. The top closure flaps include two flaps having L-shaped slits therein and a locking flap having a reduced-width locking tab at the end for reception in the two L-shaped slits. The bottom closure flaps include first and second flaps, each having a set of two L-shaped slits therein, and third and fourth flaps, the third flap being received in one of the slits in the first flap and in one of the slits in the second flap, and the fourth flap being received in the other of the slits in the first flap and in the other of the slits in the second flap.

Abstract: A collapsible container formed of paperboard which can be folded one way for shipping purposes and an alternate way for display purposes.

Abstract: A top gap folding box having four top flaps and a top closure by which the flaps are engaged. Each flap interlocks the adjacent flaps by means of a pair of incisions in the outer edge of the flap which each engage an associated incision in each of the adjacent flaps. The incisions are of a configuration permitting smooth engagement. The material of which the box is made is of a stiff nature, having resistance to bending.

Abstract: A tray formed of a unitary blank of paperboard for supporting food during a heating process. The tray comprises a bottom wall, two side walls, and two end walls with tabs interlocking the side and end walls. Tabs on the end walls project through slits in the bottom wall to form legs which support the wall in an elevated position. Interior flaps in the main wall lock the end wall tabs in place. The tray is set up without the use of adhesive. Apertures in the bottom wall allow fluid, such as water vapor in the form of steam escaping from the heated food, to flow through the tray.

Abstract: A readily assembled tray for storing articles under a bed or the like is formed from a flat, elastically bendable rectangular sheet (12) which is bent near each edge and corner for forming integral bottom and sides of the tray without creasing the sheet. Each corner of the sheet is notched to permit such bending. Four rigid side rails (13) are detachably connectable along edges of the sheet for collectively forming a rigid rim for the tray. Four corner connectors (14) secure edges of the notches together at the corners and secure the rails on the edges of the sheet. Preferably each of the corner connectors is an integral plastic molding in the form of a concave clamshell mating with an outside of a corner and a convex clamshell mating with an inside of the corner and connected to the outer clamshell by a membrane of plastic serving as a hinge line running diagonally across the corner. Elastic tangs (37) latch the two moieties of each corner connector to each other and to the sheet.

Abstract: A collapsible dual compartment carry-out tray formed of paperboard.

Abstract: An air freshener carton includes a regular, polygonally-shaped lower unit and a complementally shaped upper unit which are movable relative to each other along a common, longitudinal axis. The upper unit has a plurality of openings spaced about its top wall which are selectively opened by relative movement of the units away from each to enable air to circulate through the openings to contact and diffuse an active air freshener material housed within the lower unit.

Abstract: A container for produce and the like is formed by a pair of endwalls and a wrapper. The wrapper is divided by score lines into a floor panel, a pair of sidewalls, a pair of cover flaps and a pair of joiner strips by which the flaps are connected to the sidewalls. The joiner strips permit the flaps to be shifted laterally as well as pivotally. Each flap has a tab at each end thereof that is received, when the flap is closed, in a recess between two lugs on one of the endwalls. The tabs can shift laterally as permitted by undercut portions of the recesses, and must be so shifted and then bowed before they can be withdrawn from the recesses so that the flaps can be opened pivotally.

Abstract: An improved box construction is provided which is characterized by having great stacking strength and, at the same time, is readily opened for removal of a product contained in the box.

Abstract: A carton with two compartments and a blank for forming same has a collapsible divider panel hingedly coupled to interior surfaces of two adjacent side walls of the carton. The divider panel has a fold line extending from the corner thereof at the fold line between the two adjacent wall panels and extending at acute angles relative to the hinged edges of the divider panel. This permits the carton to be shipped and stored in an essentially flat, collapsed configuration and then easily rearranged to its assembled, expanded configuration by the application of inwardly directed forces against the side edges of the flat, collapsed configuration of the carton. These forces cause the divider panel to move automatically with the movement of the side wall panels of the carton.

Abstract: A multi-cell tray-type rectangular carton is disclosed which is formed in collapsed condition from a cut and scored blank of paperboard, or similar foldable sheet material, and which is adapted to be opened up into a tube with two rows of article receiving pockets in side by side relation and separated by a double thickness partition, with each row of pockets formed by depressing a cut and scored panel, which is taken from the top wall, and which is depressed so that a portion lies on the bottom wall with abutment forming edges which engage cooperating edges of panels hinged to the bottom edge of the double thickness partition and which hold the panel in cell forming position.

Abstract: A shipping container is disclosed which allows the user to ship two levels of product in the container. The first level is available when the container is folded to a first compact use size while the second level is available when the container is folded to a second expanded use size.

Abstract: A divider is disclosed which may be assembled in several different multicellular configurations. The divider is formed from a one-piece rectangular blank separated into two panels by a central longitudinal slitted-and-scored line. Each panel is further divided into two end segments and four intermediate segments by transverse score lines. The divider is assembled without gluing, and can be used to divide a single carton into five alternate cellular configurations.

Abstract: A food service container is provided comprising a rimmed receptacle and a lockable paperboard lid. The lid consists of a cover panel with a pair of extension tabs formed at opposed edges of the cover panel, and a locking assembly depending from each extension tab. Each locking assembly comprises an outer wall panel foldably connected to the extension tab and depending downwardly therefrom, means in each outer wall panel defining a semi-detachable retaining tongue, a bottom wall panel foldably connected to the outer wall panel and extending inwardly therefrom, an inner wall panel foldably connected to the inner wall panel and secured in underlying relation to each extension tab, and an engagement slot formed at the junction of inner wall panel and the glue flap.

Abstract: A container of variable volume is disclosed consisting of parallel spaced polygon surfaces peripherally interconnected via triangular surfaces which join one another. The triangular surfaces are shaped and interconnected such that when the two polygons move relative to one another they undergo a rotational movement relative to one another. The triangular surfaces may, in place of having their ends attached to the polygons, be attached to a further set of triangular surfaces whereby the stack height of the container may be incrementally increased. Fold-up containers as herein disclosed may be used as ink supply containers for ink recording devices.