A packaging unit of articles in boxes includes a mandrel, a movement device, a feeding device, a folding device, and a first retaining device. The mandrel is configured to accommodate at least one of the articles therein. The movement device is configured to move the mandrel along a movement trajectory. The feeding device is configured to feed at least one blank towards the mandrel. The folding device is configured to cooperate with the mandrel to fold at least one panel of the blank being wound around the mandrel, and to form one of the boxes. The first retaining device is movably guided parallel to the movement trajectory and is configured to cooperate with the mandrel, along a section of the movement trajectory, retaining the at least one panel of the blank, wound on the mandrel, against an abutment surface of the mandrel extended parallel to the movement trajectory. A packaging method of articles into boxes by means of such a unit is also described.

A machine for packaging groups of products in a roll with a sheet of film includes a first station wrapping the sheet on four consecutive sides of the group of products. For each of the two heads of the group, upper and lower horizontal flaps and first and second vertical flaps protrude. A second station for folding the four flaps has a conveyor surface for moving the group along a feed direction. A Folding devices, positioned on opposite sides of the conveyor fold the corresponding pairs of the flaps towards the head of the group. A device for generating a negative fluid pressure for each side of the conveyor surface, located before the device for folding each lower horizontal flap, relative to the feed direction, is configured to obtain, by generating a localised vacuum, a raising of the lower horizontal flap with respect to the conveyor surface.

A machine for packaging groups of products in a roll with a sheet of film includes a first station wrapping the sheet on four consecutive sides of the group of products. For each of the two heads of the group, upper and lower horizontal flaps and first and second vertical flaps protrude. A second station for folding the four flaps has a conveyor surface for moving the group along a feed direction. A Folding devices, positioned on opposite sides of the conveyor fold the corresponding pairs of the flaps towards the head of the group. A device for generating a negative fluid pressure for each side of the conveyor surface, located before the device for folding each lower horizontal flap, relative to the feed direction, is configured to obtain, by generating a localised vacuum, a raising of the lower horizontal flap with respect to the conveyor surface.

Machine for packaging paper rolls (R) comprising adhesivation means (EG) adapted for applying an adhesive substance (GG) on an internal side of a side flap of a packaging sheet, which adhesivation means act while the rolls (R) pass through an entry station (E) of the machine.

Machine for packaging paper rolls (R) comprising adhesivation means (EG) adapted for applying an adhesive substance (GG) on an internal side of a side flap of a packaging sheet, which adhesivation means act while the rolls (R) pass through an entry station (E) of the machine.

Packaging machine for packaging tissue paper products, such as kitchen towels and toilet rolls, by wrapping a paper wrapping sheet around the products, the machine including: a feeding station for feeding, one by one in succession, groups of products including at least one product; a wrapping station for wrapping the paper wrapping sheet around the groups of products; a sealing device for sealing the paper wrapping sheet around the groups of products; a wrapping sheet feeding station for feeding a single wrapping sheet at a time along a sheet feeding direction towards the wrapping station, including a dispensing device for applying sealant to the paper wrapping sheets.

Packaging machine for packaging tissue paper products, such as kitchen towels and toilet rolls, by wrapping a paper wrapping sheet around the products, the machine including: a feeding station for feeding, one by one in succession, groups of products including at least one product; a wrapping station for wrapping the paper wrapping sheet around the groups of products; a sealing device for sealing the paper wrapping sheet around the groups of products; a wrapping sheet feeding station for feeding a single wrapping sheet at a time along a sheet feeding direction towards the wrapping station, including a dispensing device for applying sealant to the paper wrapping sheets.