Abstract: A container is formed of a pair of paperboard tubular walls open at both ends and one telescoped within the other. A liquid impervious transparent liner is confined within the inner wall and the ends of the walls are closed by top and bottom closures. A fitment is attached to the liner and extends outward through the tubular walls for connection of a dispensing control valve. One or more liquid level indicating windows is provided by forming registering openings in the inner and outer tubular walls and pressing a transparent cup into each opening in the inner tubular wall before telescoping the inner and outer tubular walls together. A peripheral flange on the cup abuts the outer surface of the inner tubular wall and is secured in place by being sandwiched between the inner and outer tubular walls. In an alternative container construction, a single container wall is used, and the cup flange is abutted against and, if desired, secured to the confronting inner or outer surface of the container wall.

Abstract: A container is formed of a pair of paperboard tubes opened at both ends and one telescoped within the other. A bottom inner closure cap closes the open bottom end of the inner tube and has a plurality of peripheral flaps inserted between the inner and outer tubes. One of the flaps is hinged to a tab portion of the inner closure cap which extends partially into the inner cap and terminates at its inner end in a transverse score line to allow the tab to be hinged outward of the cap for inserting a flexible plastic liner into the inner tube. A fitment on the liner is extended outward through, aligned openings in the flap and inner and outer tubes. An outer bottom cap covers the inner bottom cap and the fitment extends outwardly through an opening in its peripheral wall. With the assembly supported on a pallet, liquid is filled into the liner from its open top, the liner then is closed within the inner tube and a top outer cap is fitted over the top end of the outer tube.

Abstract: Multiple ply corrugated or solid fibre paperboard having any desired number of plies is made by adding to the delivery end of conventional corrugator or paster apparatus, between the cut-off section and the stacker section, a glue applicator system controlled, preferably by computer program, to apply glue only to the desired areas of those outfeeding paperboard sheets which are to be bonded together to form the desired multiple ply paperboard. The glued and unglued paperboard sheets proceed to the stacker section where they are stacked one upon another. The paperboard sheets having an interface of glue are bonded together to form the multiple ply end product and the paperboard sheets having no glue interface allow subsequent separation of the plurality of multiple ply corrugated paperboard end products in the stack. Offsetter mechanism is provided to offset corresponding margins of certain plies of a group before depositing them in the stacker, to form a splice joint.

Abstract: A container is formed of a pair of paperboard tubes opened at both ends and one telescoped within the other. A bottom inner closure cap closes the open bottom end of the inner tube and has a plurality of peripheral flaps inserted between the inner and outer tubes. One of the flaps is hinged to a tab portion of the inner closure cap which extends partially into the inner cap and terminates at its inner end in a transverse score line to allow the tab to be hinged outward of the cap for inserting a flexible plastic liner into the inner tube. A fitment on the liner is extended outward through, aligned openings in the flap and inner and outer tubes. An outer bottom cap covers the inner bottom cap and the fitment extends outwardly through an opening in its peripheral wall. With the assembly supported on a pallet, liquid is filled into the liner from its open top, the liner then is closed within the inner tube and a top outer cap is fitted over the top end of the outer tube.