Abstract: An apparatus for forming a box or bag that is made of a substrate strip which includes a winder having a mandrel and posts that extend from the mandrel in a direction parallel to a winding and translation axis that rotate together as a unit around the translation axis. The apparatus also has a feeder that includes precursors and a gathering head used for forming the precursors into the strip and feeding the strip to the winder. A motor adjusts the feeder's angle relative to the winder in response to instructions from the controller based on the dimensions of the box or bag. This causes controlled overlap between adjacent windings of the strip on the posts. As the mandrel rotates, the posts draw the strip and wind the strip along a spiral having a length in excess of the depth. Zero waste of precursors is made possible by cutting the substrate perpendicular to its length and folding over the box or bag ends to form an angled seam with respect to the sides of the box.

Abstract: The machine includes a spindle; a winding unit, cooperating with the spindle to wind one or more strips of web material about the spindle and form a tubular element; and a cutting unit with at least one discoidal cutting tool to divide the tubular element into tubes of a length which can be predetermined. At least one pressure element is associated with the cutting tool to compress the tubular element between the spindle and the pressure element adjacent to the cut performed by the cutting tool.

Abstract: A cardboard tube, with respect to a narrow marginal end area of the same provided with a hollow interior roll, is applied against a rotatory die which has a concave surface suitable for forming an entrant perimetric step by means of constriction of the narrow marginal area. The diameter of the riser thereof is equal to the interior diameter of the cardboard tube. At the same time, against the interior hollow roll is applied a force of enough intensity to flatten the cavity of the interior hollow roll and apply the wall thereof against the interior face of the wall of the cantilevered end of the cardboard tube formed by the action of its rotatory die.

Abstract: Folding device, for use in sealing flexible tubular containers by adhering two facing portions on the same end edge, which comprises two groups of rotating paddles that face one another, able to turn simultaneously and so that each paddle in the same group pushes respective portions inside a side of a container positioned between the two groups of paddles, the paddles of the same group being able to move towards or away from one another, and preferably being connected via an element with elastic properties.

Abstract: A machine for forming tubular film lengths from a linear portion of film comprises: a unit (1) for feeding linear film portions (2); at least one forming roller (3) that revolves about an axis (7) transversal to the direction of film feed; means (14) for applying the film portion (2) to the surface of the forming roller (3) as it revolves, at least until opposite edges (4, 5) of the film portion (2) overlap; and means (11) for joining the overlapping edges (4, 5) to each other to form a tubular film length (6).

Abstract: A tubular composite container includes a paperboard body ply wrapped into a tubular shape, and a polymer film liner ply wrapped into a tubular shape and adhered to the inner surface of the body ply. The liner ply has a circumferential length when unwrapped and flat that is less than that of the body ply so that the liner ply is substantially uncompressed circumferentially. A strip of polymer film liner material is wrapped onto a mandrel and overlapping edge portions of the liner strip are heat sealed together by first preheating the liner strip to a temperature below the sealing temperature of the heat seal material on the edge portions of the liner strip, and then further heating the overlap region of the liner strip to at least the sealing temperature to cause heat sealing of the edge portions. A paperboard strip is coated on an inner surface with adhesive and is then wrapped about the liner and adhered thereto.

Abstract: A method for making a tubular product of a fiber composite material is made up of the filament winding method and the sheet rolling method. The tubular product is formed of an inner layer and an outer layer. The inner layer is formed of a fiber tow by the filament winding method, whereas the outer layer is formed of one or more fiber sheets by the sheet rolling method.

Abstract: In the production of cigarette packs, especially soft-cup packs 11, folding tabs have to be provided with glue marks 15. To make accurate glue marks 15 even on packaging machines operating at a high working speed, a glue unit 16 is arranged on the periphery of the folding turret 35 in such a way that glue faces 32 of the glue-coating member 21 having glue wings 22, 23 come up against a side-wall tab 13 to be provided with glue marks 15, this at the same time being deformed elastically. As result of the relative movement, the glue wing 22, 23 is rolled on the side-wall tab 13 by means of the glue face 32, thus producing an accurate glue pattern.

Abstract: A composite container comprising a tubular body formed of spirally wound plies of paperboard or the like and an internal vacuum accommodating liner substantially coextensive with the length of the tubular body and adhesively affixed solely at the opposed ends thereof to the tubular body. The container is completed by the mounting of opposed end caps which are hermetically sealed to the adhesively secured opposed ends of the liner for the accommodation of an internally developed vacuum within the liner.