Abstract: The folding machine comprises at least one folding cylinder (1, 3; 505) provided with at least one gripping member (43; 513) to mechanically grasp the web material (N) along a folding line. An electrostatic attraction member (79; 515) is associated with the gripping member (43; 513) to attract the web material towards said gripping member (43; 513).

Abstract: The rewinding machine includes a first winding roller; a second winding roller; a nip defined between the first and second winding rollers, through which the web material is fed; a roller surface, extending upstream of the nip in relation to the direction of feed of the web material and defining, with the first winding roller, a channel into which winding cores are fed, the channel having an inlet and an outlet; a feeder to feed winding cores into the channel; and a severing device to sever the web material upon termination of winding a log. The severing device is disposed to operate on the web material in a position upstream of the inlet end of the channel, in relation to the direction of feed of the web material. The first winding roller has suction openings on its cylindrical surface. Moreover, between the position in which the severing device operates and the inlet of the channel, a suction box is provided inside the first winding roller.

Abstract: The embossing and laminating device comprises: a central embossing cylinder (1), provided with a plurality of protuberances (1P); at least three pressure rollers (3, 4, 5) disposed along the periphery of the embossing cylinder (1) and provided with a yielding surface, cooperating with the embossing cylinder; at least three paths to feed one or more plies (V1, V2, V4) between the central embossing cylinder and each pressure roller; at least a first gluing unit (7) disposed between two consecutive pressure rollers and cooperating with said central embossing cylinder.

Abstract: The rewinding machine includes: a first winding roller; a second winding roller; a nip defined between the first and the second winding rollers, through which the web material is fed; a roller surface, extending upstream of the nip in relation to the direction of feed of the web material and defining, with the first winding roller, a channel into which winding cores are fed; a feeder to feed winding cores into the channel; and a severing device to severe the web material upon termination of winding a log. The severing device is disposed to operate on the web material in a position upstream of an inlet end of the channel, in relation to the direction of feed of the web material and the first winding roller which has suction openings on its cylindrical surface. Moreover, between the position in which the severing device operates and the inlet of the channel, a suction box is provided inside the first winding roller.

Abstract: The invention relates to a machine for producing a tubular product (T) by means of helical winding of strips of web material, comprising a mandrel (4) and a winding member (7) to helically wind the strips (S1, S2) of web material around said mandrel. To improve adhesion between the strips at least one pressure member (31) is provided, cooperating with the mandrel, disposed downstream or upstream of the winding member (7) with respect to the direction of advance (fT) of the tubular product being formed on said mandrel. The pressure exerted by the pressure member promotes adhesion of the strips forming the product.

Abstract: The machine comprises a mandrel (4), a winding member (7) to helically wind said strips of web material about said mandrel and form a continuous tube; and rotating disk-shaped cutter (25), cooperating with said mandrel (4), to cut the continuous tube (T) into individual tubular products (M). The disk-shaped cutter (25) is carried by a rotating arm (23).

Abstract: The device comprises: a first embossing unit (3) with a first embossing roller (5) equipped with a first series of protuberances (5P); a second embossing unit (13) with a second embossing roller (15) equipped with a second series of protuberances (15P) of greater height and lesser density with respect to the protuberances of said first series, said protuberances defining decorative motifs; a glue dispenser (19) associated with said second embossing roller, to apply a glue to a first ply (V1) embossed by said first and said second embossing unit at the protuberances of said second embossing roller; a laminating member (21) associated with said second embossing roller to apply a second ply (V2) to the first ply. At least a printing unit (9), which applies an ink to said first ply (V1) at the protuberances of the first embossing roller, is associated with the first embossing roller (5).

Abstract: The paper sheet material comprises at least a first ply (V1) and a second ply (V2), coupled together by a glue. The first ply has a first embossing according to lines inclined with respect to a first longitudinal edge of the material, and the second ply is printed with a decorative pattern. The decorative motif (M) has shading simulating a relief three-dimensional design.

Abstract: The folding machine comprises a pair of folding rollers (1, 3) rotating about axes essentially parallel to each other and defining a nip (5) through which a web material (N) to be folded passes. Disposed on each of the folding rollers are folding members (61, 61A; 63, 63A) which form folds on the web material parallel to the axis of rotation of the folding rollers. For each folding roller (1, 3) a transferring device (11, 13) is also provided to transfer packs of products folded by the folding rollers towards an unloading area (9), which comprises a plurality of separating fingers (15) movable along a closed path, from an area of engagement with the folded products to an unloading area of the folded products. Each of the transferring devices extends inside an annular groove (1G, 3G) of the respective folding roller (1, 3).

Abstract: The cutting machine comprises at least one path for the products to be cut (L); at least one device (3, 5, 9) for feed of the products along said path, according to a direction of feed (fL); an element (17) rotating around a main axis of rotation (A-A); on said rotating element, at least one disk-shaped blade (19A, 19B, 19C) rotating around its own axis of rotation (B-B), said blade being provided with alternate translatory motion, substantially parallel to the direction of feed. The disk-shaped blades moves axially in relation to the rotating element during rotation of said rotating element. Moreover, the translatory movement of the disk-shaped blade is controlled so that it moves in the same direction as the direction of feed of the products to be cut when the blade is engaged in said products to follow the feed of the products during cutting.

Abstract: The device comprises at least a continuous movable flexible member (23) carrying a series of contact members (29, 29A, 29B) for the products (R; R1; RN) aligned with one another. A section of the movable flexible member is devoid of said contact members to allow the trimmings (Rc, Rt) to fall. At least a longitudinal supporting element (21) of the products (R; R1, RN), is also provided, parallel to the movable flexible member, the reciprocal position of said flexible member and of said longitudinal element being such that the products advance in contact with the contact members (29, 29A, 29B) of the flexible member and with the longitudinal element. A pusher (11) inserts the series of products with the respective trimmings between the flexible member and the longitudinal supporting member. The flexible member (23) is controlled with a variable speed to carry the section thereof devoid of contact members time by time to the level of the head and tail trimmings (Rc, Rt) of two consecutive series of products.

Abstract: The rewinding machine comprises: winding elements (1, 3, 5) to wind the web material (N) and form the logs (L1, L2); at least a first glue dispenser (31B) to apply a first glue (C2) to a portion of said web material, in proximity to a severing line, along which the web material is severed upon termination of winding a log. The first glue dispenser comprises a mechanical element (31B) that touches the web material (N) upon termination of winding each log (L1, L2), to transfer the first glue to the web material (N).

Abstract: A storage unit for temporary storage of products is described, including at least one flexible member (55), provided with supports (57) for said products, extending and moving along a path defined by a plurality of driving wheels (59, 63), including at least two substantially parallel branches. At least one guiding sliding block (201) is disposed between said two branches, in contact therewith.

Abstract: The sharpening unit (50) comprises a grinding wheel unit (80) with at least two grinding wheels (51, 53) opposed to act on two sides defining a cutting bevel of the blade (19). The grinding wheel unit is provided with at least a degree of freedom to center the grinding wheels (51, 53) in respect of a lying surface of the portion of the cutting bevel of the blade (19) on which said grinding wheels act.

Abstract: The rewinding machine comprises: a first winding roller (1); a second winding roller (3); a nip (5) defined between said first and said second winding roller, through which said web material (7) is fed; a roller surface, extending upstream of said nip in relation to the direction of feed of the web material and defining, with the first winding roller (1), a channel into which winding cores are fed, said channel having an inlet (9) and an outlet (11); a feeder (13) to feed winding cores into said channel; a severing device to severe the web material upon termination of winding a log. The severing device is disposed to operate on the web material in a position upstream of the inlet end of said channel, in relation to the direction of feed (f7) of the web material and the first winding roller has suction openings on its cylindrical surface. Moreover, between the position in which said severing device operates and the inlet of said channel a suction box (17) is provided inside said first winding roller.

Abstract: The unit comprises a first grinding wheel (81) and a second grinding wheel (83) acting on a first side (207) and on a second side (209) of the bevel (205) of the blade (19). The first grinding wheel (81) has a finer grain than the second grinding wheel (83). Moreover, the first grinding wheel also has an inclination that is not parallel to the respective first side (207) of the bevel (205) of the blade (19), while the second grinding wheel (83) has an inclination essentially parallel to the second side (209) of said bevel.

Abstract: The napkin comprises at least a first ply and a second ply joined together by gluing. At least one of the plies is embossed and a glue is applied to at least some of the embossing protuberances. A printed pattern differentiates an edge area or border (B) with respect to a central area surrounded by the edge.

Abstract: A method for producing logs (L1, L2) of web material (N) wound around tubular cores wherein the tubular core (A1-A4) is equipped with glue to secure the initial end of the web material and allow winding. Part of the glue applied to the tubular core is transferred to the web material (N) before it is severed upon termination of winding the log, to seal the final free end of the formed log.

Abstract: The device comprises: a path (12) for the products, extending from products and trimmings entry position and a product deliver position, the trimmings being removed between said two positions; along said path, a movable flexible member (3) to retain and move the products and the trimmings and an opposite longitudinal fixed element (13) to retain said trimmings (R) extending along said path parallel to a first branch of said flexible member, at a distance from it to allow the products to advance in contact with said flexible member and with said fixed longitudinal element; at least a pusher (15) movable along a feed trajectory, to feed the series of products with the respective trimmings to said path (12). The pusher feeds the products and the trimmings between the flexible member and the fixed longitudinal element.

Abstract: The storage unit comprises at least two flexible members (55), equipped with supports (57) for the products to be stored, extending moving along respective parallel paths defined by a plurality of driving wheels (59, 63). The supports (57) project laterally in respect of the relative flexible member. In each of the paths, in proximity to at least one driving wheel, a trans member (71) is positioned to receive the products from the supports located on a branch (55A) of the respective flexible member upstream of said driving wheel and transfer them to the supports located on a branch (55B) of said flexible member downstream of said driving wheel in respect of the direction of feed of the flexible members along the respective paths, so that the products follow a trajectory that by-passes said driving wheel.