Abstract: The storage unit comprises at least two flexible members (55), equipped with supports (57) for the products to be stored, extending and 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 transfer 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.

Abstract: The rewinding machine comprises: a first winding roller (11) and a second winding roller (13) defining a nip (15) through which said cores are inserted and through which said web material (N) is fed; and at least one pair of motorized engaging members (57), to engage the ends of a winding core and transmit a rotational movement to the core during at least part of the winding cycle of each log. The engaging members and the first and second winding roller are produced and disposed so that the log being formed is in contact with said first and said second winding roller. Moreover, a third winding roller (17) is provided, defining a winding space with said first and said second winding roller, said third winding roller being movable to allow increase and completion of winding of each log in said winding space.

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 plant comprises in combination at least one winder (3) which receives at least one web material and produces large diameter reels (B) by winding said web material around winding mandrels (M); at least one unwinder (9) which unwinds said large diameter reels (B) and feeds the web material to a transformation line (15, 21, 23); a plurality of carriages (11), which transfer said reels from a loading station (7) towards said unwinder (9), support said reels in the unwinder during unwinding and convey the finished mandrels towards a recovery area.

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: A description is given of a device for controlling the discharging of rolls (R) from a rewinder, comprising a rolling surface (11) on which the rolls roll as they leave said rewinder and a member (17) able to rotate about an axis parallel to said rolling surface and perpendicular to the direction of discharge of the rolls. During operation, the rotatable member always rotates in the same direction about its own axis. It is provided with at least two roll retaining surfaces defining, with the rolling surface, a roll containing zone.

Abstract: The device comprises a guide (23) defining a closed for a plurality of separator fingers (15). In the vicinity of the end of the advance stretch of the guide is set a separating member (101) provided with a movement of insertion and extraction (f103) with respect to the pile of products (P, P1, P2), synchronized with the movement of advance of the products along the path of advance, so as to insert itself between two contiguous packs of laminar products (M1, M2), between which is inserted a respective separator finger (15), and to withhold temporarily the pile of laminar products whilst said separator finger (15) is moved away from the path of advance.

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 unwinder device includes an unwinding station (7), with unwinding members for unwinding reels and a splicing device (151) for splicing together web-like materials (N1 and N2) coming from a first reel (B1) and from a second reel (B2). At least two supports (49, 51) are arranged in the unwinding station for the respective reels of web-like material, associated with respective unwinding members (83, 99). The supports are constructed and arranged to simultaneously support two reels being unwound, during at least a phase of the unwinding, and each of said supports is able and constructed to load a new reel in an engagement position, support it during the unwinding and unload it in a release position.

Abstract: The unwinder device comprises: unwinding members for simultaneously unwinding a first reel (B1) and a second reel (B2), a splicing device (151) for splicing together a first web-like material (N1) coming from said first reel (B1) and a second web-like material (N2) coming from said second reel (B2), an accumulator member (24, 200) for accumulating web-like material (N2) supplied from said second reel (B2) before splicing to the web-like material (N1) supplied from said first reel (B1).

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: Machine for the production of flexible material sheets comprising at least one folding unit housing at least one cutting cylinder, to which a suction cylinder is opposed, and a gripping cylinder for transversal folding and/or conveying flat products by suction. A second suction cylinder for a second transversal fold and/or for conveying flat products and a second conveyor cylinder for conveying folded products or flat unfolded products may be associated downstream to said machine.

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: Machine for the production of flexible material sheets comprising at least one folding unit housing at least one cutting cylinder, to which a suction cylinder is opposed, and a gripping cylinder for transversal folding and/or conveying flat products by suction. A second suction cylinder for a second transversal fold and/or for conveying flat products and a second conveyor cylinder for conveying folded products or flat unfolded products may be associated downstream to said machine.

Abstract: The rewinder machine comprises: a first winding roller (3); a second winding roller (5), defining with said first winding roller (3) a winding cradle; a feeder (33) for sequentially introducing winding cores to said winding cradle; an optional glue applicator (21) for applying glue to said cores. The feeder (33) may include an element (39) for applying glue to the winding cores while they are being fed to said winding cradle. In a special embodiment, the feeder is mechanically linked to a system for unloading the roll from the winding cradle.

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 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.