Abstract: The present invention relates to a method for unwinding a bobbin (12) of a coiled sheet (13), the method comprising the steps of: providing a bobbin of a coiled sheet, the bobbin having a first rotation axis (17) and comprising a free portion (14) of the sheet unwound from the bobbin, the free portion (14) defining a contact line (16) as a line separating the free portion and the remaining of the coiled sheet (13); providing a roller (30) having a second rotation axis substantially parallel to the first rotation axis (17); putting the roller (30) in contact with the bobbin (12) at the contact line (16); unwinding the sheet from the bobbin (12) pulling the sheet in an unwinding direction such that an angle between the free portion of the sheet and a radius of the bobbin at the contact line is comprised between about 110 degrees and about 150 degrees or between about 200 degrees and about 300 degrees; and while unwinding the sheet from the bobbin keeping the roller in contact with the outer surface of the bobbi

Abstract: There is described a magazine unit for a packaging machine comprising an inlet opening configured to allow for the introduction of a spindle carrying a wound-up web of packaging material into the magazine unit, at least one pair of housing seats configured to rotatably support the spindle carrying the wound-up web of packaging material, the respective housing seats being arranged side-by-side and distanced from the inlet opening, and a pair of guide rails, the guide rails being arranged side-by-side and each one extending from the inlet opening to one respective housing seat and being configured to guide the spindle from the inlet opening to the pair of housing seats.

Abstract: A web unwind stand for obtaining, loading, splicing, and unwinding convolutely wound rolls of web material and forwarding the web material unwound from each of the convolutely wound rolls uninterruptedly to a downstream apparatus is disclosed. The unwind stand comprises splicing means, a first positionable roll grasping apparatus for obtaining and disposing a first of the convolutely wound rolls proximate to, and relative to, the splicing means, and, second positionable roll grasping apparatus for obtaining and disposing a second of the convolutely wound rolls proximate to, and relative to, the splicing means.

Abstract: A control device, that based on number one and number two component presence signals, respectively calculates number one and number two cutting points of number one and number two tapes from predetermined pitch of number one and number two cavities, and number one and number two distances between number one and number two detection positions and number one and number two cutting positions. By this, cutting points can be specified even when tapes have different pitches between cavities, and the tapes can be spliced reliably.

Abstract: The method involves preparing an end of a new band of a new bobbin (6), and fitting a gluing joint on a connection assembly (4). Another gluing joint to be transferred is mounted on the connection assembly corresponding to a bobbin (8) unrolling a completed band. The bobbin (8) is stopped, and a junction is formed by gluing the new band with a section of the completed band using connections of the connection assembly. The unrolling of the new bobbin is started. An independent claim is also included for an end-to-end cutting and gluing device for an unrolling machine.

Abstract: An electric cling film cutter includes a base provided with a positioning frame, an auxiliary rotating rod and a driving device including a motor and a driving wheel unit. The base is assembled with a delivery wheel having its surface disposed with elongate flutes and plural guide grooves and one side provided with a driven rotating wheel engaged with the driving wheel unit. A cutter positioned before the delivery wheel contains a frame plate, a motor, a belt and a cutter base. The frame plate is provided with idle wheels parallel to and leaning on the delivery wheel. A stripping guide plate is positioned under the delivery wheel, having its upper end formed with plural protruding parting members respectively aligned to the guide grooves on the delivery wheel for pushing the cling film delivered to separate from the surface of the delivery wheel, convenient and safe in use.

Abstract: An unwinding device (10) is described for unwinding rolls (12, 14) of one-ply or two-ply web-like material (24). The device (10) comprises: a support group for sustaining a first roll (12) and a second roll (14), the support group being composed of a support pin (16) for each roll (12, 14), the support pins (16) being bound on two opposite sides of a vertical column (18) made integral with the base (20) of the unwinding device (10); an unwinding mechanism (22) for each roll (12, 14), adapted to unwind the web-like material (24) from the rolls (12, 14); a joining mechanism (26), adapted to join specific web-like material portions (24) together that respectively come from the first roll (12) and from the second roll (14).

Abstract: A paper splicing method for a printing press and a reel stand unit that prevents misregistration at a paper-splicing section in the top-to-bottom direction and that enables improvement of printing quality and stable printing are provided. Provided is a printing press including a reel stand unit configured to bond a web fed out from an old reel to a new reel and continuously feed paper by splicing paper from the old reel to the new reel, wherein the distance in the length direction of an overlapping section of the old reel and the new reel spliced by the reel stand unit is smaller than the minimum distance between driving rollers provided in the printing press. The driving rollers are, in particular, the distance between a printing unit and a blanket cylinder.

Abstract: An apparatus for switching a strip feed between supply rolls has first and second supports displaceable in a direction independently parallel to each other between an outer reload position and an inner supply position and respective first and second shafts on the supports extending parallel to the direction and adapted to carry respective rolls of strip. The strip is pulled off one of the rolls in the supply position of the respective support and fed continuously or in steps to a user. Respective cutters on each of the supports cut the respective strip, and respective gluers on each of the supports glue a leading end of the respective strip to a trailing end of the strip of the other roll.

Abstract: To obtain the automatic change of the reel in an unwinder, in particular for reels of paper and other materials in web form, operation in which a reel (2) that is nearly empty is replaced with a new reel (2?), wherein provision is made to connect a tail portion (LC) of the web of the nearly empty reel (2) to the head portion (LT) of the web of the new reel (2?) after overlapping of said ends (LC) and (LT), said overlap step begins along the surface of the new reel 2?, right next to the latter.

Abstract: An automatic reel unwinding apparatus in a machine for packaging products having a bearer structure (14, 15) carrying a pair of rotating arms (16), centrally hinged to the bearer structure (15) through a rotation shaft (17) and carrying at their ends, on two shafts (18, 18?), at least a pair of reels (12, 12?), the rotation shaft (17) being commanded through a speed reducer (20) and each of the two shafts (18, 18?) being commanded by a motor reducer (21) through a respective transmission (22) able to be selectively engaged with the motor reducer, the withdrawable shafts (18, 18?) being fixed to at least one openable support (19, 19?) arranged at an end of the arms (16).

Abstract: An apparatus and methods are disclosed to reliably utilize material as close as possible to the end of the primary supply wheel so to minimize the roll waste. An indicator material, such as tape, is positioned on the primary and standby supply wheels at a distance from the end of the roll so that a reader, such as a machine vision system, can detect the presence or absence of the indicator material on the rolls. If the indicator material is present, the machine vision system will initiate a minimal waste splice logic. If the indicator material is absent, the machine vision system will initiate a standard splice logic.

Abstract: A method for joining an initial section (3) of a film tube (2) which is wound up in a band-like manner on a reel (1) with an end section (4) of a second film tube (5) extending over subsequent processing stations, especially a packaging system, in an at least partly band-like manner, in which it is provided that at least one upwardly pivoting tab (3a, 3b, 4a, 4b) each is formed by the placement of a cut in the initial and end sections (3, 4) of the two film tubes (2, 5) to be joined, with a tab (4a, 4b) of the end section (4) being placed on a tab (3a, 3b) of the initial section (3) and the superimposed tabs (3a, 3b, 4a, 4b) are mutually joined in a tension-proof manner. The production of a tension-proof connection of the initial and end sections (3, 4) of the film tubes (2, 5) occurs here by welding, with welding methods on the basis of ultrasonic sound being preferred.

Abstract: A system for conveying a string of packaging cushions includes a machine capable of manufacturing the string and a conveyor adapted to transport the string. The conveyor has an inlet end to receive the string and an outlet end to deliver the string of packaging cushions. The inlet end of the conveyor is higher than the cushion outlet elevation of the machine. At least one pair of rolls are adapted to lift the string of packaging cushions from the machine through the nip of the rolls to the conveyor inlet elevation.

Abstract: A system and method for splicing reeled media using operational feedback. According to certain embodiments, the method of operating a media production system involves sensing speed parameters of first and second reeled media, tracking an unwinding parameter of the first reeled media, and positionally tracking a leading end position of the second reeled media. The method also involves controlling splicing between the first and second reeled media based at least partially on the speed parameters, the unwinding parameter, and the leading end position.

Abstract: A flap projecting from a glue joint between two paper strips after an on-the-fly supply roll change is shortened by continuously displacing the strips in a straight line, in a travel direction, and at a travel speed along a path such that the flap lies flatly against an outer face of the strips and engaging at least a part of a separating device against the outer face in the path. At least the part of the separating device engaging the strip is displaced in the travel direction at a speed greater than the travel speed such that, when the separating device engages the flap, the flap is bowed out away from the outer face downstream of the separating device. A blade is juxtaposed with the outer face of the strip immediately downstream of the separating device such that the bowed out flap engages and is cut by the blade.

Abstract: An electro-mechanical roll towel dispenser includes a housing with a roll carrier disposed therein to rotationally support a roll of towel material. An electro-mechanical feed mechanism is disposed in the housing to dispense measured sheets of the towel material. The feed mechanism operates in a first mechanical operational mode wherein the towel sheets are dispensed by a user grasping and pulling on a tail of the towel material extending from the housing, and a second electrical operational mode wherein a measured length of a next sheet is automatically and electrically fed out of the housing to define the tail for the next user.

Abstract: The present invention provides a web splicing method and a web splicing apparatus with which a line velocity on an output side of the splicing apparatus does not fluctuate through a web splicing operation. The method and apparatus are further operable to maintain a line velocity at a predetermined velocity after the web splicing operation. The method of the present invention includes the steps of: connecting a second web Wb fed out from a second roll B to a first web Wa; cutting off the first web Wa at a position between a point at which the second web Wb is connected to the first web Wa and a first roll A; spinning the second roll B to feed out the second web Wb; obtaining a value of a diameter of the second roll B based on a state of an accumulator 4; and controlling a circumferential velocity of the second roll B based on the obtained diameter.

Abstract: A unit (1) for feeding strips (2, 3) has pins (12) supporting a first and a second reel (6, 7) of a first and a second strip (2, 3) respectively; the second reel (7) having an end (53; 56) of the second strip (3) extending at the cylindrical outer surface (52) of the second reel (7); the unit having a tool (18) having a plate (40) for joining the first and the second strip (2, 3), and a movable arm (20) having a gripping head (25; 55) for gripping the end (53; 56) along the cylindrical outer surface (52); and the gripping head (25; 55) having a first gripping face (30; 60) for gripping the first and the second strip (2, 3) between the plate (40) of the tool (18) and the first gripping face (30; 60).

Abstract: A roll unwinding system having a kitchen rail, a primary drive assembly, and an elevator assembly is disclosed. The unwinding system stages and positions multiple rolls, which are spliced together on the fly. A method for unwinding sequential rolls of web material that eliminates machine down time for positioning new parent rolls is disclosed. A method for unwinding and splicing the rolls is also disclosed.

Abstract: A fiberboard splice apparatus is made up of a fiberboard splice part for adhering an old fiberboard fed from one roll fiberboard to an end portion of a new fiberboard fed from the other roll fiberboard to accomplish fiberboard splice therebetween, and a fiberboard feed device for forwarding the new fiberboard from the other roll fiberboard to the fiberboard splice part. The fiberboard feed device includes one fiberboard feed roll placed along an axial direction of the roll fiberboard to make the other roll fiberboard rotatable in a state brought into contact with a surface of the other roll fiberboard and a pair of pickup members located to interpose the fiberboard feed roll therebetween for picking up a tip portion of the other roll fiberboard while coming into sliding contact with the surface of the other roll fiberboard.

Abstract: A web handling apparatus includes a base, a housing, a splicing head mounted in the housing, and first and second non-rotatable swing out roll shafts, each shaft having opposite first and second ends. The roll shafts are normally positioned in the housing substantially parallel to the splicing head so that web can travel through the splicing head to on from web rolls on the roll shafts. A web accumulator mounted to the housing conducts web to or from the splicing head and the housing is movably mounted to the base so that the housing can move relative to the base in either direction parallel to the roll shafts. An actuator connected between the housing and the base moves the housing relative to the base in response to signals from a web position sensor so as to minimize the side lay of web extending to or from the apparatus.

Abstract: A tape dispensing unit (10), feeding tear tapes (12, 13), to a continuous portion of packaging material (14). The tear tape is applied to the packaging portions so that consumers may easily open the assembled packages. Tape is applied to packaging from a reel. A reserve reel also holding tape is provided. When the end of the tape on the reel in use is reached the tape dispensing unit splices together the end of the tape in use with the beginning of the reserve reel, so that tape is fed continuously to the packaging material.

Abstract: In the case where the width of a web roll for the next job is much different from that of the web roll for the former job, the rotational position of the new web roll is moved to a position at which a web of the new roll is easily pasted to the web of the old roll and the new web roll is held at the position. A device for continuously supplying a web can continuously supply the web by adhering the web of an old web roll onto the web of the new web roll. The device includes a manual paper paster setting means for setting a manual paper paster mode and a control device for locating/stopping the rotational position of the new web roll at an adhering waiting position in response to a signal from the manual paper paster setting means.

Abstract: A roll unwinding system having a kitchen rail, a primary drive assembly, and an elevator assembly is disclosed. The unwinding system stages and positions multiple rolls, which are spliced together on the fly. A method for unwinding sequential rolls of web material that eliminates machine down time for positioning new parent rolls is disclosed. A method for unwinding and splicing the rolls is also disclosed.

Abstract: A method and device for trimming flaps formed upon joining a leading end of a new roll to the trading end of a web of a preceding roll in which the web, after joining, is guided around an upstream roller, along a straight path and then onto a downstream roller. A nozzle directs an air stream in the direction of movement of the web or along the width thereof to cause the flap to erect. Downstream of the nozzle a blade trims the flap while it is erected by the air stream.

Abstract: The present invention provides a web splicing method and a web splicing apparatus with which a line velocity on an output side of the splicing apparatus does not fluctuate through a web splicing operation. The method and apparatus are further operable to maintain a line velocity at a predetermined velocity after the web splicing operation. The method of the present invention includes the steps of: connecting a second web Wb fed out from a second roll B to a first web Wa; cutting off the first web Wa at a position between a point at which the second web Wb is connected to the first web Wa and a first roll A; spinning the second roll B to feed out the second web Wb; obtaining a value of a diameter of the second roll B based on a state of an accumulator 4; and controlling a circumferential velocity of the second roll B based on the obtained diameter.

Abstract: A fiberboard splice apparatus is made up of a fiberboard splice part for adhering an old fiberboard fed from one roll fiberboard to an end portion of a new fiberboard fed from the other roll fiberboard to accomplish fiberboard splice therebetween, and a fiberboard feed device for forwarding the new fiberboard from the other roll fiberboard to the fiberboard splice part. The fiberboard feed device includes one fiberboard feed roll placed along an axial direction of the roll fiberboard to make the other roll fiberboard rotatable in a state brought into contact with a surface of the other roll fiberboard and a pair of pickup members located to interpose the fiberboard feed roll therebetween for picking up a tip portion of the other roll fiberboard while coming into sliding contact with the surface of the other roll fiberboard.

Abstract: A device for joining the trailing edge of a reel of paper about to finish to the leading edge of a new reel comprising, on a supporting structure (11), a support (12) for the reel as it unwinds (13), a device (15) for transferring the reel (13) to a unit for tensioning the trailing edge (17) of the reel (13′) about to finish, a cutting unit (32) of the trailing edge (17), at least one roller (43) that presses the trailing edge (17) on the new reel (13) once it has been positioned on the support (12) and provided with a double-sided tape (48) positioned crosswise on a lateral surface of the same in order to retain its leading edge (49).

Abstract: In a flying splice roll changer a splice tail occurs at the splice joint that may induce problems in a downstream processing station. The present invention is directed to shortening of the splice tail (2) by directing the paper web (1) around a deflection roller (3) so that the splice tail (2) is located on the outer face of the roller and extends radially under the action of centrifugal force while being optionally supported by air ejected from blowing nozzles (8, 9). The splice tail is then cut with a blade (7) located in the vicinity of the outer surface of the deflection roller (3) so that only an insignificant length of a few millimeters remains.