Abstract: A conveying unit includes a rotatable roller having a first through-hole between the inside and the outside of the roller. A cylindrical member inside the roller has an opening and defines an annular chamber between the member and the roller. An insert borne by the roller inserted in the first through-hole thereof and contacting an external surface of the cylindrical member has a second through-hole in communication with the outside of the roller and extending through the first through-hole and the annular chamber. The first through-hole of the opening is configured such that, when the roller rotates, the insert transits at the opening, temporarily placing the outside of the roller in fluid communication with the annular chamber via the second through-hole, so that a sheet outside the roller and at the first through-hole is pulled against the roller by aspirating means and is conveyed.

Abstract: An adapter element configured for insertion inside the core of a paper roll to be applied to the support shaft of a dispenser includes an external annular wall adapted for insertion into the core of the paper roll with a predetermined degree of mechanical interference; an axial channel delimited by an annular wall arranged internally to the external annular wall; and first engaging elements configured for releasable engagement to second engaging elements belonging to the support shaft of the dispenser so that, in use, a portion of the end of the support shaft is insertable into the axial channel of the adapter element. A dispenser is also disclosed having the support shaft adaptable for engagement with the adapter element.

Abstract: A conveying unit includes a rotatable roller having a first through-hole between the inside and the outside of the roller. A cylindrical member inside the roller has an opening and defines an annular chamber between the member and the roller. An insert borne by the roller inserted in the first through-hole thereof and contacting an external surface of the cylindrical member has a second through-hole in communication with the outside of the roller and extending through the first through-hole and the annular chamber. The first through-hole of the opening is configured such that, when the roller rotates, the insert transits at the opening, temporarily placing the outside of the roller in fluid communication with the annular chamber via the second through-hole, so that a sheet outside the roller and at the first through-hole is pulled against the roller by aspirating means and is conveyed.

Abstract: A pile of folded or interfolded paper sheets for use in cooking or food applications includes sheets having a rectangular shape defined by a side that shapes the length of the sheet and a side that shapes the width of the sheet. The length of the sheet is from 20 cm to 42 cm and the width of the sheet in a range from 25 cm to 40 cm. A dispenser for containing the pile of folded or interfolded sheets is configured to contain, and enabled to collect, the above described sheets.

Abstract: A method relates to the production of paper rolls for examination tables, obtained from a tape (100) of embossed paper, having two layers (10, 20), joined together. The band (100) is obtained in known way from two continuous webs (1, 2), subjected to subsequent steps of embossing, glue (C) application, coupling and stabilization. The method includes applying measured quantities of a sanitizing and/or disinfectant substance (S) between the two layers of embossed paper (10, 20) before their joining; preferably, the substance (S) is applied to the same continuous web (1) that is aimed at receiving the glue (C), after the embossing step and contemporarily with the glue (C) application, by spot-application of a mixture (M) in aqueous solution containing suitable percentage of the glue (C) and sanitizing substance (S) to the tops (11A) of the embossing relieves (11.) In this case, the application means (240) for sanitizing substance (S) are formed by the same means (220) for applying the glue (C).

Abstract: The method for automatic separation of bundles of interfolded sheet articles is carried out in an interfolding machine that includes a folding unit (100), aimed at cutting the articles (1), folding them and forming an interfolded stack (2), and that includes also a separating device (10), situated downstream of the folding unit (100). The separation method includes: supporting the base of the stack (2) by first supporting planes (A) of the separator (10); lateral introduction of second supporting planes (B) and subsequent forming of an underlying bundle (3) of articles (1); separation of the bundle (3) and release thereof onto a conveyor (20); upwards movement of the first supporting planes (A) until they are placed directly underneath the second supporting planes (B); re-inserting of the first supporting planes (A) under the base of the stack (2); withdrawal of the second supporting planes (B) from the base of the stack (2).

Abstract: The device for driving folding arms of comb-like folding means along a closed operating path is used on an interfolding machine 100 for production of interfolded packs of sheets of tissue paper or another material and is mounted on a frame 10a situated in the lower part of the machine 100. A connecting rod-crank transmission assembly 13 is mounted on the frame 10a and connected to the comb-like 2, to drive the latter along the closed operating path. The driving device 10 comprises also a main motor 51, aimed at supplying at least a part of mechanical power necessary to drive the comb-like 2, and a supplementary motor 55, running at a controllable rotation speed, aimed at cooperating with the main motor 11, in driving the comb-like 2. An epicycloidal type differential 20, connected mechanically to the main and supplementary motors 51 and 55, and to the transmission assembly 13 as the combination of the power received at the intakes.

Abstract: A method relates to the production of paper rolls for examination tables, obtained from a tape (100) of embossed paper, having two layers (10, 20), joined together. The band (100) is obtained in known way from two continuous webs (1, 2), subjected to subsequent steps of embossing, glue (C) application, coupling and stabilization. The method includes applying measured quantities of a sanitizing and/or disinfectant substance (S) between the two layers of embossed paper (10, 20) before their joining; preferably, the substance (S) is applied to the same continuous web (1) that is aimed at receiving the glue (C), after the embossing step and contemporarily with the glue (C) application, by spot-application of a mixture (M) in aqueous solution containing suitable percentage of the glue (C) and sanitizing substance (S) to the tops (11A) of the embossing relieves (11.) In this case, the application means (240) for sanitizing substance (S) are formed by the same means (220) for applying the glue (C).