Abstract: A hospital waste receptacle is formed of two unitary blanks of corrugated paperboard, one blank forming a unitary outer container and the other blank forming a unitary inner container. The blank for the inner container may assume either of two forms to yield an inner container whose side walls either contact the side walls of the outer container, or alternatively, are spaced from them. The inner container is shorter than the outer container. The outer container has two main top closure panels, opposite to each other, with the inner top closure panel having a central opening for disposition of hospital waste therethrough. The outer top closure panel carries a pair of latches to secure it closed when the receptacle is full. The outer top closure panel also carries a pull out handle to assist in transporting the filled receptacle. In a modification, the top pull handle is omitted and opposite ends of the container provided with hand holes. A pair of spaced hollow beams extend along the sides of the container.

Abstract: A multilayer non-foil barrier bag or liner constructed to house hazardous chemicals such as pesticides and herbicides. The unique bags or liners maintain the efficacy of the active ingredient of the herbicide or pesticide over extended periods of time.

Abstract: A sandwich pouch is formed from a unitary blank of Kraft paper or other easily biodegradable, flexible sheet material. The blank is of generally rectangular form and includes a plurality of generally rectangular panels, joined side by side and foldably secured together by generally transversely extending fold lines. The ends of a pair of middle panels are each provided with a generally rectangular end seal flap. The blank is also provided with a pair of longitudinally extending tear lines which permit the pouch formed from the blank to be torn open at either or both ends to gain access to its contents. The pouch is opened by bending back an upper front closure panel for insertion of a food product such as a hamburger.

Abstract: A carbon formed from a unitary blank of paperboard and being of rectangular parallelepiped shape. The carton is particularly adapted to contain a food product, such as a frozen juice concentrate or a frozen mass of other food product. The invention relates to a top closure construction which enables the consumer to remove the top closure so that the carton contents, particularly if in the form at a frozen brick, can easily be removed. Further, after such removal, the remainder of the carton can function as a measuring container for pouring any liquids therein which are to be added to the food product. These functions are achieved by the provision frangible lines, such as perforated tear lines, straight across the carton sidewalls, contiguous to the top of the carton sidewalls. The carton top closure is provided with a pull tab or a fin having a free end which can be manually grasped by the consumer.

Abstract: A package including a flanged tray and a wrapper surrounding it. The tray typically contains a foodstuff such as a pie. The wrapper is formed of a rectangular, unitary blank of paperboard which is folded and wrapped aroung the tray, the wrapper being folded to the form of a tube with the tray therein. The wrapper includes two oppositely located latching flaps (24) whose free edges (28) are curved so as to match the curvature of the tray. The curved or arcuate latching flaps are initially folded downwardly more than 90 degrees from the plane of the blank. Other portions (16, 18) of the blank are bent upwardly along respective transverse fold lines (23), causing the arcuate latching flaps to bow inwardly and beneath the flanges of a tray (32) and contact the tray flanges (34). Portions (16, 18) of the wrapper are then folded beneath and on the sides of the tray and ends (17) are overlapped and glued together to finish the package.

Abstract: A compact disc (CD) package formed from a unitary paperboard blank. The package is relatively long and stiff in its pre-purchased form and is readily foldable widthwise only after purchase. To permit folding after purchase, any outer wrapping is removed and the purchaser pulls a tear strip to rip away two of three layers of paperboard spanning the width of the package. This removal permits relatively easy folding of the remaining paperboard layer. The package yields both the desired pre-purchase larger size to permit desired graphics and also inhibits shoplifting. The lesser size of the package after folding facilitates storage by the purchaser. The blank of FIG. 1 includes a first pair of panels (20, 22) in a first row, a second pair of panels (30, 28) in a second row, and a third pair of panels (14, 12) in a third row. The panels of the first pair are joined by a foldable joint (46). The panels of the second pair are joined by a first frangible connection in the form of a tear strip (40).

Abstract: A multi-barb pick for a waste stripping machine. The pick is formed from a flat sheet metal piece. Two spaced triangular projections, generally parallel, extend from one section of the piece, with each projection terminating in a barb. Each barb is generally rectangular in form and two adjacent edges thereof are sharpened along each surface thereof. The barb is employed in a conventional waste stripping apparatus for removing cut sections from a paperboard web of indefinite length.

Abstract: A pouch for the packaging of products having a pressure sensitive adhesive thereon, such as sanitary napkins. The pouch is formed of paper of plastic film coated on one side with a layer of silicone, the pouch construction being such that the silicone coating defines the interior surfaces of the pouch. Due to the nonstick characteristic of the silicone coating, the usual protective liner for the adhesive on the packaged product can be omitted. The side seams of the pouch are formed by the application of heat or ultrasonic energy in combination with mechanical deformation of the paper or film to produce embossments in the seam areas. The side seams may be comprised of two or three layers of material. The nature of these side seams may be such that the pouch may be opened by peeling apart the seams, or the seams may be sealed so tightly that the pouch can be opened only by tearing the material.

Abstract: A flexible, open ended microwave cooking tube formed of paper. The paper is provided with a layer of microwave susceptor material such as vacuum deposited metal. The tube is formed of a rectangular blank of the stock comprised of the paper and microwave susceptor material. A pair of opposite, parallel ends of the blank are seamed together and are provided with handle forming holes. In operation, a food item is placed within the tube. During the cooking process, the susceptor material reaches the high temperature required to brown and crispen the food. The seamed, handle portion of the tube, not being provided with susceptor material, remains relatively unheated and is hence less dangerous to the user when the tube and food are removed from the microwave oven. The tube can be formed from a continuous length of the paper/susceptor stock and wound into a roll. Short lengths of the tube can then be cut from the roll to provide individual containers for microwave cooking.

Abstract: A tray formed from a unitary paperboard blank. The tray has a locking tab at each corner, each latching tab projecting beyond the next adjacent tray wall. Two such trays may be latched together to form a closed container. The tray structure is such that two of the trays may be latched together in only one of four possible angular relations of the trays. The tray is rectangular and may be square or oblong.

Abstract: A carton construction for paperboard cartons such as those adapted to certain fruit juices or other potable liquids which require a barrier to protect the liquid. Present paperboard cartons for such liquids often include polymeric barrier layer materials and foils laminated to the paperboard or other stiff, foldable and resilient sheet material. Such barrier layer/foil materials increase the difficulty of recycling the paperboard after container use. Further, during the carton forming/sealing process, the polymeric surfaces of the container are heated to activate a heat sealable bond. This heating tends to crystallize the polymer and generate polymeric odors that are transmitted to the liquid product. These difficulties are overcome in the present invention by a bag and spout construction wherein the bag and spout are removed from the carton after use, thus permitting recycling of both the paperboard carton and the bag.

Abstract: A microwave cooking tray for microwave ovenable foodstuffs which usually display browned or crisped areas upon conventional oven cooking. The container is formed from a one piece blank of dielectric material, such as paperboard, which is bent and folded to form a trough shaped tray. A microwave interactive component included in the blank provides thermal heating effects such as browning and crisping for foodstuff placed in the tray and heated in a microwave oven. The tray is foldable to a flat configuration to facilitate shipment and storage. In one embodiment, the tray is flat on its entire upper portion when cooking.

Abstract: An insulated paper cup having inner and outer frustoconcial shells, the inner shell being more tapered than the outer shell. The upper rims of both shells are outwardly curled and joined together. The outer shell has a recessed bottom upon which the bottom of the inner shell rests. The inner surface of the inner shell is coated with a plastic film such as polyethylene.

Abstract: A one-step slaking/causticizing method for producing white liquor from unslaked lime and clarified green liquor comprising introducing a feed slurry of unslaked lime and clarified green liquor into a pressurized slaker/causticizer reaction zone and maintaining the mixture in the zone at a temperature, under sufficient pressure and for a time sufficient, in one step to slake the lime and to convert the slaked lime to a white liquor containing product slurry.

Abstract: A method and apparatus for doctoring (cutting) the solids off a precoat filter. A stationary doctor blade continuously doctors mud (from a mud bath) from the surface of a rotating porous surface vacuum drum. A traveling doctor blade, located upstream of the stationary doctor blade, moves back and forth along the drum. The stationary blade extends the width of the rotating vacuum drum while the traveling blade is shorter and is also located nearer to the drum surface.

Abstract: A nonwoven composite web consists of 15 to 50 wt. % of first polyester fibers having a first length, a first denier and a first melting temperature; 15 to 50 wt. % of second polyester fibers having a second length, a second denier and a second melting temperature; 15 to 50 wt. % of third polyester fibers having a third length, a third denier and a third melting temperature; 10 to 35 wt. % of polypropylene fibers; and 1 to 25 wt. % of cellulose fibers. The first, second and third lengths are no less than 1/2 inch, the first, second and third denier are no less than 1.5, and the third melting temperature is less than the first and second melting temperatures respectively. The first and second polyester fibers, the polypropylene fibers and the cellulose fibers are bonded to each other at least in part by solidification of the third polyester fibers after subjecting the web to temperatures in excess of the third melting temperature but not in excess of the first and second melting temperatures.

Abstract: Dual lanes of fitment-sealing apparatus, for sealing plastic spout fitments to carton blanks, are integrated in line with conventional form/fill/seal production lines. Each apparatus includes a carton blank supply, an indexing conveyor for advancing the blanks in tube form to a sealing station, a gravity-feed track for supplying fitments to the sealing station through an escapement, a pair of fitment retaining clamps for holding the fitment in registration with a spout hole cut in the carton blank, an anvil which is inserted inside the carton blank, a sealing head which is moved to press the fitment in contact with and to seal it to an extrusion layer on the external side of the carton blank, and a timing control for synchronizing the movements of the parts and advancing the carton blanks through the sealing station to an output thereof. The fitment may also be sealed to the extrusion layer with a hot-melt adhesive applied to the fitment just prior to pressing against the carton blank.

Abstract: A wrap-around carrier to package a linear series of gable-top liquid cartons is formed from a one piece paperboard blank conformed so that an end flap will cover a major area of an end of the erected carrier to inhibit damage, loss, or pilferage of an object such as a straw temporarily secured to an otherwise exposed side of a contained carton.The top panel is provided with a longitudinally running tear strip, conveniently wide enough to form a returnable card or a coupon, the coupon provided with advertising or other indicia on one or both of its surfaces.

Abstract: A clamshell carton formed from two integral blanks of sheet material. The front wall of the upper clamshell carries a latching aperture. The front wall of the lower clamshell half carriers a latch release panel, the latter carrying a horizontally despaired latching tongue normally engaged in the latching aperture to maintain the clamshell in a closed configuration. The latch release panel is normally resiliently biased to maintain the latch tongue engaged. The front wall of the upper clamshell half is provided with a recess along a free edge, the recess permitting direct finger force to be applied to the latch release panel to open the carton by disengaging the latch.

Abstract: A paperboard carton formed from a unitary blank of paperboard. A side flap of the carton bottom is overlapped with and sealed to a side flap of the top cover. At least one of these flaps is provided with spaced abseal (adhesion resistant) areas. The interabseal areas are provided with adhesive to seal against the other, overlapping flap. The interabseal areas are bordered by cut lines extending partially through the paperboard, and are preferably embossed so as to be raised from the remaining flap area. The other front and side flaps are conventionally sealed together by an adhesive, such as a heat activated PET coating on the paperboard surface. To effect opening, these two flaps are pulled apart with the adhered together, interabseal are a of one of these flaps delaminating by virtue of the cut lines, the latter extending completely through the PET coating.