Abstract: A method for selectively feeding rolls of paper coming out of a log saw unit (10), wherein the log saw unit (10) comprises (n) feeding channels (12) for feeding logs (11) towards a cutting device (13) provided at the outlet with (n) unloading belts (14) in a number equal to the feeding channels (12), comprises a step of generating a stop signal relating to a portion of a packaging unit downstream of the log saw unit (10) further to the detection of accumulation of rolls (11?) and/or of stopping of a packaging machine, as well as a step of attributing said stop signal to a feeding channel/sub-group of feeding channels (12) operatively associated with the portion of the packaging unit, called “feeding channels/sub-groups of feeding channels (12) subject to stopping”, wherein the method—upon receipt of the stop signal—comprises at least the steps of: ending the cutting of the log (11) in progress on all of the (n) feeding channels (12) of the log saw unit (10), selectively stopping the forward movement of a n

Abstract: A gluing device (10) for gluing an end edge (11?) of a log (11) comprising, in succession, an introducing group (20) for introducing logs (11) into the gluing device (10), a handling group (30) for handling the log (11) associated with detection means for detecting the end edge (11?) and comprising a pair of rollers (31, 32) selectively for advancing and for holding in rotation the log (11), a glue dispensing group (40) and a transferring group (50) for transferring the log (11) comprising a transferring plane (51) arranged downstream of the lower handling roller (32), between the lower handling roller (32) and the transferring plane (51) has a space (35) for the passage of the end edge (11?), the glue dispensing group (40) being arranged below the transferring plane (51) and comprising a transversal row of glue dispensing nozzles (41) are selectively disinsertable and directed towards the lower handling roller (32), and it comprises a transversal alignment device (23) for aligning the log (11) arranged upstr

Abstract: A method for selectively feeding rolls of paper coming out of a log saw unit (10), wherein the log saw unit (10) comprises (n) feeding channels (12) for feeding logs (11) towards a cutting device (13) provided at the outlet with (n) unloading belts (14) in a number equal to the feeding channels (12), comprises a step of generating a stop signal relating to a portion of a packaging unit downstream of the log saw unit (10) further to the detection of accumulation of rolls (11?) and/or of stopping of a packaging machine, as well as a step of attributing said stop signal to a feeding channel/sub-group of feeding channels (12) operatively associated with the portion of the packaging unit, called “feeding channels/sub-groups of feeding channels (12) subject to stopping”, wherein the method—upon receipt of the stop signal—comprises at least the steps of: ending the cutting of the log (11) in progress on all of the (n) feeding channels (12) of the log saw unit (10), selectively stopping the forward movement of a new

Abstract: A gluing device (10) for gluing an end edge (11?) of a log (11) comprising, in succession, an introducing group (20) for introducing logs (11) into the gluing device (10), a handling group (30) for handling the log (11) associated with detection means for detecting the end edge (11?) and comprising a pair of rollers (31, 32) selectively for advancing and for holding in rotation the log (11), a glue dispensing group (40) and a transferring group (50) for transferring the log (11) comprising a transferring plane (51) arranged downstream of the lower handling roller (32), between the lower handling roller (32) and the transferring plane (51) has a space (35) for the passage of the end edge (11?), the glue dispensing group (40) being arranged below the transferring plane (51) and comprising a transversal row of glue dispensing nozzles (41) are selectively disinsertable and directed towards the lower handling roller (32), and it comprises a transversal alignment device (23) for aligning the log (11) arranged upstr

Abstract: Multilayer sheet (10) of the type comprising a first layer (11) and a second layer (12) superimposed and constrained to each other through adhesive material (17) interposed between them in small amounts, wherein both said layers (11, 12) are embossed; characterised in that: said first layer (11) comprises a first (13) embossing matrix so as to make a plurality of first projections having a preset depth (d), and a second embossing matrix (15) so as to make a plurality of second projections having a greater depth (D) of said preset depth (d) of said first (13) embossing matrix; said second layer (12) comprises a first (14) embossing matrix so as to make a plurality of first projections having a preset depth (d?), and a second (16) embossing matrix so as to make a plurality of second projections having a greater depth (D?) than said preset depth (d?) of said first (14) embossing matrix; said adhesive material (17) being arranged at the contact points between said second (15) embossing matrix of said first layer

Abstract: Machine for producing a tubular element by winding a cardboard strip (11) in a coil pattern and subsequently cutting it (17) to size; said machine being of the type comprising a winding pin (13) on which said cardboard strip (11) is wound in a coil pattern partially overlapping so as to form an overlapping area (12) between subsequent turns of the coil and a dispenser (14) of glue (18) configured to apply said glue (18) on said strip (11) within said overlapping area (12); the machine also comprises means for cyclically arranging adhesive labels (20) astride the edge of said strip (11) at the areas undergoing the subsequent cutting operation (17).

Abstract: A rapid tearing device of a strip in a rewinder for the winding of paper around a core (15) to produce a log (12), where said rewinder has a formation area of the log (12), for moving cores (15) forward into a channel (16) defined by a series of cradles (17) by an upper winding roller (18), the device having a blade (24), having the dimension of the width of the rollers (18, 19, 20), which can be moved by actuators (31, 35; 30, 22, 25) between a rest position and an engagement position on a core (15) when the core (15) is unloaded from said conveyor (13) by means of an introducer (34) and introduced into the channel (16) thus blocking, between core (15) and blade (24), the paper (11) which is being unwound.

Abstract: An apparatus for cutting paper logs in a plurality of rolls is disclosed. The apparatus has at least one longitudinal input channel and at least one output channel defining circular housings and being arranged in a succession among them. The channels have mobile walls with an upper mobile portion and a lower mobile portion. The lower mobile portion is connected with a structure for supporting the apparatus on one side and with an intermediate portion of the upper mobile portion on another side. The upper mobile portion has a free upper end and a base end connected to a movable cursor. A mobile actuator for moving the walls, which engages the upper mobile portion at the base end is also provided.

Abstract: In one embodiment, a roll for devices for the treatment of ribbon-shaped paper material includes a central shaft, on which a coaxial tubular jacket is fitted, among which two oscillating and non-rotating connection organs are positioned, the central shaft of the roll having, at opposite ends, oscillating bearings housed in a supporting structure, wherein the central shaft and jacket are both rotating and are also made torsionally integral by means of at least one flexible organ capable of transmitting a torque. In another embodiment, a device for the treatment of ribbon-like paper material includes with a pair of rolls opposed as specified above, wherein a first roll has a tubular steel jacket and a second roll has a tubular rubber jacket.

Abstract: A device for the elimination of trimmings of rolls or logs of ribbon-like material associated downstream with a shearing machine of at least one roll or log (11), fed by a feeding plane (13) of rolls (10) and head and/or tail rolls (24), consecutively. The device comprises a conveyor group (14) for carrying the rolls (10) and eliminating the head and/or tail rolls (24,24?), wherein the feeding plane (13) comprises rests (15) and the conveyor group (14) comprises flaps (21), both shaped, facing each other and spaced between each other to define central longitudinal openings (16 and 22) for the passage of pushers (17) which allow at least one roll or log (11) to advance; the conveyor group (14) having chains (20) on which flaps (21) are positioned, and having a length of chains (20) without flaps (21) that define a movable opening (23) between adjacent chains.

Abstract: A device for the elimination of trimmings of rolls or logs of ribbon-like material associated downstream with a shearing machine of at least one roll or log (11), fed by a feeding plane (13) of rolls (10) and head and/or tail rolls (24), consecutively. The device comprises a conveyor group (14) for carrying the rolls (10) and eliminating the head and/or tail rolls (24,24?), wherein the feeding plane (13) comprises rests (15) and the conveyor group (14) comprises flaps (21), both shaped, facing each other and spaced between each other to define central longitudinal openings (16 and 22) for the passage of pushers (17) which allow at least one roll or log (11) to advance; the conveyor group (14) having chains (20) on which flaps (21) are positioned, and having a length of chains (20) without flaps (21) that define a movable opening (23) between adjacent chains.

Abstract: A rapid tearing device of a strip in a rewinder for the winding of paper around a core (15) to produce a log (12), where said rewinder has a formation area of the log (12), for moving cores (15) forward into a channel (16) defined by a series of cradles (17) by an upper winding roller (18), the device having a blade (24), having the dimension of the width of the rollers (18, 19, 20), which can be moved by actuators (31, 35; 30, 22, 25) between a rest position and an engagement position on a core (15) when the core (15) is unloaded from said conveyor (13) by means of an introducer (34) and introduced into the channel (16) thus blocking, between core (15) and blade (24), the paper (11) which is being unwound.

Abstract: The present invention refers to a device (1) for gluing the final edge (4a) of a log of band-shaped material (4), comprising a rolling plane (2) for feeding a log (3) that has at least a through opening (7) for the application of a glue (8) on the log (3) itself. The device comprises a blade (9) provided for the application of the glue (8) on the log (3). The application blade (9) is mobile between a first position, in which it is spaced from the opening (7), and a second position, in which it is disposed close to the through opening (7). The device (1) comprises a pressure container (10) for housing the glue (8) to be fed to the blade (9). The container (10) has a slot (12) facing towards, and close to an application edge (9a) of the blade (9) when the latter is in the first position.

Abstract: A rewinder (10) for winding paper (11?) around a core (11) for making a log (11?) comprising, in an upstream position, means for transporting and introducing the core (11) into a channel (12) defined at the top by an upper winding roller (14), supplied from above with the paper (11?) directed towards the channel (12), and at the bottom by a cradle member (13) associated downstream with a lower winding roller (15), the rewinder (10) comprising a third oscillating roller (16) arranged above the lower winding roller (15).

Abstract: In one embodiment, a roll for devices for the treatment of ribbon-shaped paper material includes a central shaft, on which a coaxial tubular jacket is fitted, among which two oscillating and non-rotating connection organs are positioned, the central shaft of the roll having, at opposite ends, oscillating bearings housed in a supporting structure, wherein the central shaft and jacket are both rotating and are also made torsionally integral by means of at least one flexible organ capable of transmitting a torque. In another embodiment, a device for the treatment of ribbon-like paper material includes with a pair of rolls opposed as specified above, wherein a first roll has a tubular steel jacket and a second roll has a tubular rubber jacket.

Abstract: An apparatus for cutting paper logs in a plurality of rolls is disclosed. The apparatus has at least one longitudinal input channel and at least one output channel defining circular housings and being arranged in a succession among them, being provided means for moving the log along the channels. The channels have mobile walls with an upper mobile portion and a lower mobile portion. The lower mobile portion is connected with a structure for supporting the apparatus on one side and with an intermediate portion of the upper mobile portion on another side. The upper mobile portion has a free upper end and a base end connected to a movable cursor. A mobile actuator for moving the walls, which engages the upper mobile portion at the base end is also provided.

Abstract: A gluing group of a final edge of a log including in succession an introducing group into the gluing group of the logs one after the other, an unwinding group of the log associated with means for identifying the final edge, an opening group of the final edge from the log and a glue transfer group on the log, in which the opening group of the final edge and the glue transfer group are housed in a slide structure that is mobile with respect to the unwinding group by a predetermined amount dependent upon the diameter of the log, with rolling transfer means of the log from the unwinding group to the slide structure being foreseen.

Abstract: A gluing machine for gluing the final edge of a log successively comprising an introduction group of the logs one after the other into the machine, an unwinding group of the log associated with identification means of the final edge, an opening group of the final edge from the log, a glue transfer group onto the log and a rewinding group of the final edge onto the log, in which the unwinding group of the log comprises a pair of rollers arranged one on top of the other to make a passage for the log, the pair of rollers being selectively for the feeding and for the retention in rotation of the log, at least one inclined surface of free rolling of the log being provided downstream of the pair of rollers.

Abstract: The present invention concerns a tearing device of a continuous ribbon of paper material to be supplied on rewinding machines and a method for tearing the same ribbon. The device comprises mechanical tearing means to cause the tearing of the ribbon in correspondence of at least one perforation and weakening line of the same. The mechanical tearing means comprise an interception portion suitable for engaging, at least temporarily, the structure of the continuous ribbon, to cause it to break. The mechanical tearing means are mobile between a non operative position, in which the interception portion does not engage the ribbon, and an operative position, in which the interception portion engages the ribbon transversally until it causes it to break along a respective perforation and weakening line.

Abstract: The present invention concerns a cutting device for rolls of ribbon-like material. The device 1 comprises cutting means active on at least one roll in order to divide this latter in two or more pieces. The cutting means are commutable between a non operative condition, in which they do not act on the roll, and an operative condition, in which they transversally cut the roll. The cutting means comprise a thread-like cutting element which develops transversally to the roll. The cutting thread is mobile along its longitudinal development so as to cut the roll. The cutting means comprise at least one handling member, preferably two pulleys operatively associated to the thread-like cutting element to move this latter along its longitudinal development.