Abstract: Method and equipment for the manufacture of corrugated paper products includes separate heaters for preparing liner and medium components. Data regarding these components is collected and an optimum conditioning for the components is determined.

Abstract: A toy building block is constructed by folding an integral paperboard blank. The toy building block includes locking tabs and complementary-shaped openings, with the tabs of one toy building block received in the openings of another toy building block.

Abstract: A carton blank from a one-piece blank includes a floor and sidewalls, with corner posts at the corners of the carton. The corner posts include end panels located beside adjacent sidewalls and a plurality of intermediate panels folded to form a Z-shape cross-section.

Abstract: A paperboard tray is provided with sidewalls forming a T-shaped beam. Optional corner posts may be provided to further increase the stacking strength of the tray. An optional cover may also be employed to provide a sealed container assembly.

Abstract: A carton with triple-thickness sidewalls formed from a one-piece unitary blank includes sidewalls and endwalls extending from a floor. Lid members extending from the endwalls cover the carton interior and arrangements for locking the lids in a closed position are provided. The sidewalls and endwalls are interlocked with a locking post arrangement to prevent pull-out.

Abstract: A carton with triple-thickness sidewalls formed from a one-piece unitary blank includes sidewalls and endwalls extending from a floor. Lid members extending from the endwalls cover the carton interior and arrangements for locking the lids in a closed position is provided. The sidewalls and endwalls are interlocked with a locking post arrangement to prevent pull-out.

Abstract: A packaging assembly includes a pair of opposed channel members joined at their upper end by at least one intermediate cross member. The cross members and channel members are fitted together with a plug and socket arrangement. The channel members and cross members are assembled on an item to be packaged, in preparation for application of a plastic overwrap. The channel members and cross members include lifting flanges at their upper ends for mechanized handling of the package.

Abstract: The corrugated container is provided with internal reinforcing panels to form corners of increased thickness, thereby augmenting the stacking strength of the container. Locking tabs are formed in either vertical endwalls or in horizontal lid panels of the container and are interlocked with the reinforcing panels being folded between overlapping reinforcing panels. Locking slots are provided in the carton sidewalls and locking flaps have ear portions engagable with edges of the locking slots, to hold the lid panels in a closed position.

Abstract: The invention is process for biologically treating ink/starch waste-water which is typically produced from the process of making paper and cardboard products. Waste-water that contains naturally occurring facultative anaerobic bacteria is placed into a first tank so that the first tank and the mixture is stirred until a pH of between about 4 to about 6 is reached. The mixture is transferred into a second tank so that the second tank and aerobic bacteria is added to the mixture in the second tank, wherein the second tank has an aeration blower so as to make oxygen available to the aerobic bacteria. The mixture is held in the second tank until the mixture reaches aerobic equilibrium with a pH between about 7 and about 8. After reaching this equilibrium, the wastewater can be used in up to 100% makeup to prepare high quality corrugating adhesive of consistent paramenters for viscosity and gelatinization temperature.

Abstract: A carton formed from a one-piece unitary blank includes sidewalls and endwalls extending from a floor. Lid members extending from the endwalls cover the carton interior and arrangements for locking the lids in a closed position is provided.

Abstract: Disclosed is a twin-package carton having a pair of separable carton components separably joined side-by-side. Connecting tabs of one carton component are secured to the other carton component with an adhesive and are severable along lines of perforation.

Abstract: Open-sided container apparatus includes a cap member having an internal divider wall forming pockets for receiving corner posts of L-shaped cross-section. The corner posts have bottom endwalls for cushioning the corners of an appliance. The cap and corner posts may be used separately, if desired.

Abstract: Disclosed is a protective carrying apparatus of puncture-resistant material sides which mates with medical waste containers. The apparatus acts as a barrier between the person handling the medical waste container and contaminated sharp objects which may protrude through the container. The apparatus may be readily employed in hospital and health care waste handling programs to provide a prophylactic protection against the transmission of infection or injury due to contaminated sharp objects which may be inside medical waste containers.

Abstract: Carton apparatus includes lid members having locking tabs received in pockets formed in triple layer sidewalls. The intermediate layer of the sidewall defines a recess for receiving the locking tab, and forms a pocket when inner and outer sidewall layers are brought into contact with the intermediate sidewall layer. The intermediate sidewall layer includes locking edges which engage locking edges on the locking tabs. The tab-receiving pockets may be either open or closed.

Abstract: A carton with triple-thickness sidewalls formed from a one-piece unitary blank includes sidewalls and endwalls extending from a floor. Lid members extending from the endwalls cover the carton interior and arrangements for locking the lids in a closed position is provided. The sidewalls and endwalls are interlocked with a locking post arrangement to prevent pull-out.

Abstract: A carton having a tubular body with a pair of opposed sidewalls and a pair of opposed endwalls, with end panels and side panels for a closure extending therefrom. At least one end panel is hinged to an endwall and has a free edge defining a pair of spaced notches with a retention flap therebetween, thereby forming a pair of locking tabs, one at each free corner of the end panel. At least one hinged tab is struck out from each side panel. The hinged tab includes a tab hinge line and a double-ended severing line extending to spaced apart portions of the tab hinge line so as to form a tab which is swingable out of the plane of the side panel, thereby exposing a locking edge of the side panel formed by the severing line. The locking tabs of the end panel deflect the hinge tabs into the interior of the carton to form recesses in the side panels into which the locking tabs are inserted so that the locking edge of the tab engages the locking edge of the side panel.

Abstract: A carton includes a tubular body with a pair of opposed sidewalls and a pair of opposed endwalls. A closure extending from the sidewalls and endwalls includes end panels and side panels joined to the endwalls and sidewalls with hinge lines. The end panels have a discontinuous free edge which extends across a pair of free corners. A recessed edge is located between the free corners and defines a pair of U-shaped locking edge portions on either side of a generally arcuate intermediate portion. A pair of locking recesses are formed in each side panel, each recess including an arcuate edge portion spanning a generally truncated V-shaped edge portion. The recessed edge of the end panels engages the locking recesses of the side panels to lock the carton closure.

Abstract: An integral carton blank from which a carton is formed having an end with three upstanding carton walls forming a pair of spaced-apart outside corners with reinforcing corners nested within each outside corner. The reinforcing corners are formed of reinforcing shoulders integrally joined to the end walls of the carton. Each reinforcing shoulder has three panel portions, two overlying a side wall and one overlying an end wall. Substantial portions of the panels of the reinforcing shoulder engage a floor of the carton to provide improved compressive strength.

Abstract: A carton having a tubular body is provided with an automatic, or nearly automatic, folding top construction, having triple-thickness handles at opposed ends of the carton, upstanding above the carton closure flaps. Two of the three thickness portions of the handles are hinged to the closure flaps and are automatically formed as the closure flaps are folded to a closed position. The remaining layer of the handles includes a hinged flap swung into position overlying the handle layers. As the third layer is swung into position, locking tabs carried by the third layer are received in recesses on the major closure flaps, thus locking the handles and the major closure flaps in a fully closed position.

Abstract: A carton having interfitting cover and bottom portions is formed from an integral blank and has improved automatic locking features. Locking tabs struck out from an endwall of the cover are received in recesses formed in an endwall of the bottom portion. The locking tabs are wedged by folded end flaps to insure proper orientation for reception in the recesses, and to provide a bias force to urge the locking tabs into engagement with wall portions surrounding the recesses.