Abstract: There is described a pre-creased sheet packaging material for forming a sealed package comprising: a plurality of longitudinal crease lines, which extend along a longitudinal direction; a plurality of transversal crease lines, which extend along a transversal direction; at least one first additional crease line, which extends along a further direction, which is slanted with respect to longitudinal direction and transversal direction; a first joining point, at which longitudinal crease line and a transversal crease line join with respect to one another; and at least one first area, which is bounded by longitudinal crease line, transversal crease line and additional crease line; further direction being incident to first longitudinal crease line and to first transversal crease line in first joining point; at least one of first longitudinal crease line, first transversal crease line and first additional crease line being interrupted at first joining point.

Abstract: A packaging machine includes a conveying device for advancing a packaging material web at least to a tube forming station at which the web is formed into a tube and for advancing the tube to a tube forming and sealing device to form and longitudinally seal the tube, a tensioning device to control tension of the web and/or of the tube and a control unit to control operation of the packaging machine. The tensioning device has at least one tensioning assembly having at least first and second drive rollers, a first drive motor connected to the first drive roller to rotate the first drive roller and a second drive motor connected to the second drive roller to rotate the second drive roller. The control unit controls the first and second drive motors such that a free loop of the web expands and/or advances between the first and second drive rollers.

Abstract: There is described a pre-creased sheet packaging material for forming a sealed package comprising: a plurality of longitudinal crease lines, which extend along a longitudinal direction; a plurality of transversal crease lines, which extend along a transversal direction; at least one first additional crease line, which extends along a further direction, which is slanted with respect to longitudinal direction and transversal direction; a first joining point, at which longitudinal crease line and a transversal crease line join with respect to one another; and at least one first area, which is bounded by longitudinal crease line, transversal crease line and additional crease line; further direction being incident to first longitudinal crease line and to first transversal crease line in first joining point; at least one of first longitudinal crease line, first transversal crease line and first additional crease line being interrupted at first joining point.

Abstract: A method for producing a sealed package for a product may include: providing a sheet packaging material having a crease pattern with a first transverse crease line, a second transverse crease line, and a plurality of further crease lines interposed between the first and second transverse crease lines, the further crease lines extending transversely to the first and second transverse crease lines; obtaining a sealed preliminary packaging unit from the sheet packaging material, the sealed preliminary packaging unit having a preset inner volume and containing the product; exerting a forming action on the sealed preliminary packaging unit so as to fold the sheet packaging material defining the sealed preliminary packaging unit and obtain a package therefrom. During the step of obtaining the sealed preliminary packaging unit, the sheet packaging material may be processed without being folded along the further crease lines.

Abstract: The invention relates to a forming device (42) for feeding along a forming path (B) a pack (3) which has at least one portion (6) to be folded into a finished package (2). The forming device (42) comprises a first surface (46a) and a second surface (46b) opposite to each other and adapted, in use, to cooperate respectively with a front wall (15) and a rear wall (10) opposite to each other of the pack (3) to be folded. The first surface (46a) comprises an at least partially concave forming section (8) adapted, in use, to cooperate with a top portion of the front wall (15) of the pack (3), such that an inward deformation of the top portion of the front wall (15) is prevented during forming of the pack (3). The invention also relates to a folding unit (1) for forming sealed packages (2) of pourable food products, to a method for forming a pack (3) which has at least one portion (6) to be folded into a finished package, and to a package (2).

Abstract: A sheet packaging material for producing a package comprises at least one first crease line and at least one second crease line, at least one third crease line which intersects said first crease line in at least one first point and said second crease line in at least one second point, at least one fourth crease line, at least one fifth crease line, which extends between said first point and said fourth crease line, at least one sixth crease line, which extends between said second point and said fourth crease line, said first point and said fourth crease line being spaced by a first distance, said second point and said fourth crease line being spaced by a second distance, said first crease line and said second crease line being spaced by a third distance, wherein the sum of said first distance and said second distance is less than said third distance.

Abstract: A method for producing a sealed package (2; 102) for a product, comprises the following steps: —providing a sheet packaging material (1; 101) having a crease pattern (20; 120), the crease pattern (20; 120) comprising at least a first transverse crease line (4) and a second transverse crease line (6), the crease pattern (20; 120) further comprising a plurality of further crease lines (8, 9, 10, 11; 8, 90, 91, 92, 93, 11) interposed between the first transverse crease line (4) and the second transverse crease line (6), said further crease lines (8, 9, 10, 11; 8, 90, 91, 92, 93, 11) extending transversely to the first transverse crease line (4) and to the second transverse crease line (6); —obtaining a sealed preliminary packaging unit (200) from the sheet packaging material (1; 101), the sealed preliminary packaging unit (200) having a preset inner volume and containing the product; —exerting a forming action on the sealed preliminary packaging unit (200) so as to fold the sheet packaging material (1; 101) defi

Abstract: A method of operating a machine for producing sealed packages for a product, comprises the step of changing the configuration of the machine so that the machine, which was producing a package (2) having a first conformation, becomes capable of producing a package (102) having a second conformation. The first conformation is different from the second conformation. The package (2) having the first conformation is produced from a first sheet packaging material (1) comprising a first basic unit (3) having a length (L) and a width (W), the package (102) having the second conformation being produced from a second sheet packaging material (101) comprising a second basic unit (103) having a length (L) and a width (W) respectively equal to the length (L) and width (W) of the first basic unit (3).

Abstract: A sheet packaging material for producing a package comprises at least one first crease line and at least one second crease line, at least one third crease line which intersects said first crease line in at least one first point and said second crease line in at least one second point, at least one fourth crease line, at least one fifth crease line, which extends between said first point and said fourth crease line, at least one sixth crease line, which extends between said second point and said fourth crease line, said first point and said fourth crease line being spaced by a first distance, said second point and said fourth crease line being spaced by a second distance, said first crease line and said second crease line being spaced by a third distance, wherein the sum of said first distance and said second distance is less than said third distance.

Abstract: There is described a sealed package for pourable food product, comprising: a first wall, which is adapted to define, in a normal use position, a bottom wall of package, and which comprises a plurality of boundary first edges defining a first plane; a second wall, which is opposite to first wall, comprises a second edge and a third edge opposite to each other, and is adapted to define, in the normal use position, a top wall of package; second edge and third edge define a second plane, which is angled with respect to first plane for a first angle smaller than 90 degrees; the first angle ranges between 1 and 7 degrees.

Abstract: There is described a folding unit for forming sealed packages of pourable food products, comprising: at least one conveying device for feeding along a forming path a relative pack which have at least one portion to be folded to form a finished package; at least one folding device interacting, in use, with pack along said forming path and adapted to fold said at least one portion; conveying device comprises a first and a second surface opposite to another and adapted, in use, to cooperate respectively with a front and a rear wall opposite to each other of relative pack to be folded; first surface is at least partially concave.

Abstract: There is described a forming member for controlling the volume of packs of pourable food products formed from a tube of packaging material and sealed at a number of sections of tube crosswise to an axis of tube, comprising: a wall comprising, in turn, a first surface which is adapted to interact with a first portion of tube; and a pair of sidewalls protruding from wall on the same side of wall, and comprising respective second surfaces which are adapted to interact with relative second portions of tube; first surface is at least partially concave.