Abstract: The disclosed butt splicing apparatus and method is adapted to be used with rolls of material supported on turret-type roll unwind stands. A splicer embodying the invention includes a nip assembly, a new web preparation assembly, a new web and tape holding assembly, and a web cutting and adhering assembly. The nip assembly serves to clamp the expiring web during a splicing operation. The new web preparation assembly serves to prepare the leading end of the new web for the splicing operation. The new web and tape holding assembly serves to hold a portion of the new web, immediately upstream of its leading end, and to hold a strip of adhesive tape in preparation for the splicing operation and during the splicing operation itself. The web cutting and adhering assembly serves to cut the expiring web during the splicing operation and to cause the cut part of the trailing end of the web and the leading end of the web to adhere to the adhesive tape simultaneously as the cutting of the expiring web occurs.

Abstract: Apparatus for use in continuous web reeling apparatus for connecting a web to a winding roll as the web is being unwound from an unwinding roll by deflecting a run of the web and pressing the deflected web against joining tape provided on the surface of the winding roll. The apparatus includes a plurality of axially aligned pressing members, a fluid-actuated expandable actuating device for exerting pressure on the pressing members to cause the pressing members to move against the web to exert a joining force on the web to press the web against the joining tape provided on the surface of the winding roll, and a spring device for returning the pressing members to their original position after the web has been connected to the winding roll.

Abstract: An automatic taping device which is used for winding insulation tapes around an object such as an electrical conductor bar. This device has a supporting frame which is driven along the object, and a revolving ring with a layer of the insulation tape around it, which is arranged on the supporting frame and which revolves around the object continuously winding the insulation tape(s) supplied from the layer. The device also has an adhesive feeder which feeds adhesive onto the outside of the insulation tape(s) on the revolving ring when the thickness of the layer of the insulation tape has become less than a stipulated value, and it also has a tape feeder which feeds an insulation tape to the revolving ring after the adhesive is fed there.

Abstract: A semi-automatic operating and also adjustable device for interconnecting the opposite ends of two material bands originating from two individual webs, one web of which is nearly terminated the other being the starting one, the connection being made with an adhesive tape attached to only one and the same side of both bands, said device comprising two pinch rollers, cutting knives and idler rollers, the band material being either paper or textile, to be used for a printing operation.

Abstract: A device for feeding a material tape from a supplement roll at a preparation station to another material tape wound off an un-winding roll positioned at a connection station includes a first and a second feeding arrangement, each including a fixed rotatable deflecting roller, a swingable rotatable deflecting roller spaced from the fixed roller and swingable about the axis of the latter, and a drive carrying a fixing bar to which a starting end of the material tape to be fed is fixed. The drive pivots the fixing bar with the tape end from the preparation station to the connection station at which the starting end of the material tape of the supplement roll is connected to the material tape of the un-winding roll.

Abstract: An improved process and apparatus for splicing a new web to a running web including cutting the old web between two rollers, the first roller having a cutting means, a rotating means, an actuating means and the second roller being a backing cylinder. The first roller is brought in contact with the old web, and the backing roller then rotates through the cutting action to permit splicing to occur while maintaining a continuous supply of web material.

Abstract: An automatic paper roll pasting apparatus, for sequentially and continually feeding a continuous strip of paper, or a paper web, to a rotary press from a plurality of paper rolls, having a paper roll support capable of accommodating at least two paper rolls, a mechanism for measuring a value relating to the diameter of a paper roll newly mounted on the paper roll support, and a mechanism for controlling the revolution of the new paper roll, and constructed so that the revolution of the new paper roll is caused to agree with a desired revolution calculated from the revolution of a paper web which is currently fed to the rotary press, thus enabling the new paper roll to be pasted to the running paper web automatically.

Abstract: The invention is directed to a device for automatically splicing a web of material in a web feeding apparatus, in which the web of material is drawn from a supply roll and is stopped in order to change the roll. A severing knife, at least one suction member, a pressure-applying member and a pulley member which can travel on the beam, combined with an anvil for the severing knife, are disposed on an arm-like beam which can be swung toward the circumference of the supply roll. The swinging movement of the beam is limited such that it can approach the roll core only up to a certain minimum distance. However, up to that point the pressure-applying member can bear resiliently against the circumference of the supply roll.

Abstract: An apparatus of this invention includes first and second supply rolls of wrapping film sheets. The film sheet is fed from first supply roll to a wrapping machine. The distal end of the film sheet of the second supply roll is partially fixed by an adhesive tape. In this state, the film sheet cannot be fed from the second supply roll. The second supply roll can be rotated in the forward or reverse direction. The apparatus also includes a knife for cutting the adhesive tape of the second supply roll. When the remaining length of the film sheet fed from the first supply roll becomes short, the knife is brought into contact with the outer surface of the second supply roll. By utilizing the rotation of the roll, the knife is inserted under the distal end of the film sheet of the second supply roll. Thereafter, the knife is moved along the outer surface of the second supply roll in the axial direction thereof, thereby cutting the adhesive tape of the second supply roll.

Abstract: The present invention relates generally to equipment for a printing system for newsprint and the like and, more particularly, to a device for automatically preparing leading web ends of paper rolls for automatic web pasting.A device embodying the present invention is supported generally from a ceiling of a room and extends downwardly when used.

Abstract: A method of and device for attaching a web of material rolling off to a processing machine to the beginning of a fresh web that is wound on a reel. To provide a method that will inexpensively and rapidly ensure a reliable attachment between the two webs, the first web is separated upstream of a stored section with the processing machine turned off and the separated section at least partly reserved, the section of web with the second web is then forced into contact, and the end of the reserved web section attached to the beginning of the second web as it arrives by releasing the reserved web section with the processing machine in operation. The device comprises an upright with the replacement reel mounted on it, a mechanism for reserving a supply of web, and a mechanism for cutting the web.

Abstract: In an apparatus for joining the ends of sheets of material 10, 11, consisting especially of packaging material, a sheet-holder 28 assigned to the running-off sheet of material 10 is moved with the sheet of material in the direction of a second sheet-holder 29, the running-off sheet of material being severed and the rear end being joined to the front end 38 of the sheet of material 10 to be connected. The to-and-fro movements of the sheet-holders 28, 29 are executed by means of pressure-medium cylinders 48 which can be controlled by sensor units 22, 23 assigned to the sheets of material 10, 11.

Abstract: A method and device for the production of cover strips which are to be inserted into the grooves of stators of electric machines, from a supply of strip material provided on delivery rolls. The guide channel (26) for cover strip material (12) has several feed passages (46, 46'), which can be brought individually into connection one after the other with the main part of guide channel (26). Thus it is possible to thread the lead of a new delivery roll into its feed passage (46, 46') of the guide channel while the machine continues to run, so that when delivery rolls (16, 16') are to be changed, only a mechanical change of position of feed passages (46, 46') need be undertaken. The down time of the machine is thus greatly shortened.

Abstract: A novel apparatus is provided for feeding a packaging film with registered marks to a working machine, such as a packaging machine which packs products in wraps. According to the apparatus, rapid and continuous feeding of the film is realized. Further, one operator can watch and control a plurality of machines.

Abstract: A machine and method for splicing a new length of linered tape to a length of linered tape being pulled from the machine without interrupting the movement of the tape out of the machine. The tape is pulled along a supply path aligned with an outlet path, a clamp is activated to stop tape movement at an inlet to the outlet path while a path length changing mechanism is activated to shorten the outlet path at the same rate that tape is being pulled from the machine, the length of tape being pulled from the machine is cut between the outlet path and the supply path, the end of another supply path carrying the new supply length of tape is aligned with the outlet path, splicing means splice together liners on the tape ends at the aligned end and inlet, the clamp is released after such splicing, and the outlet path is returned to its normal length.

Abstract: An apparatus for joining the trailing end of a preceding sheet to the leading end of a following sheet is disclosed which effects the union of the two sheet ends by keeping the trailing end of the preceding sheet sucked to the lower side of a pair of suction boxes disposed on a sheet path as separated by an interval, cutting the sheet so held in place along the interval, elevating a movable receiving table disposed below the sheet path, and holding in place the leading end of the following sheet, thereby bringing the leading end of the following sheet into contact with the cut end of the preceding strip of sheet and thereby allowing the two sheet ends to be joined.

Abstract: Apparatus for splicing the trailing end of an old web to a new web comprises a pair of tangential fixed rollers between which the old web is fed. At each side of the fixed rollers two further rollers are supported by arms pivotted on a pin lying in the tangent plane. The old web runs over one of these rollers, while on the other the starting end of the new web is supported with a double-sided adhesive tape thereon. The roller above which the old web runs is pivotted above the other roller so that the web runs between the rollers and the webs are spliced by raising the lower roller, as the old web runs out. A cutting device separates the tail of the old web. The upper roller is then moved back to its original position for preparing a new web.

Abstract: A splicer-welder (13) for multiple reels (11,12) of continuous tapes of multiple connected integrated circuit lead-frames to be conveyed through a lead-frame preparation line (10) includes fixed electrodes (40) positioned adjacent an entry slot (45) and spring-loaded movable electrodes (59) normally spaced from the fixed electrodes. The end of the lead-frame tape is sensed and by use of an accumulator section of multiple pulleys (18,19,20) one of which is movable on a rail (21), the span of tape between pulleys acts as a reserve of tape for continuous downstream processing of the tape while the end of the tape is stopped. Sprocket holes on the tape ends are placed on retaining pins (41,42) alongside the electrodes and one or more frames of a beginning of a second lead-frame tape from a second reel are overlapped with one or more frames of the end of the first tape.

Abstract: The web leading edge of a paper roll for a rotary press or the like is held and prevented from raveling by three or more pieces of strong adhesive tape during handling and loading onto a paper feed machine of the printing press. On the paper feed machine, perforated tear lines are formed across the tape pieces by a device comprising a rotary perforating wheel, a mechanism for moving the wheel from one end to the other of the roll and also moving it against and away from all of the tape pieces, and a tape detecting device and a controller for automatically operating the mechanism. The tape pieces can then be easily torn to release the web leading edge immediately prior to web splicing.

Abstract: A paster tab for releasably securing the beginning end of a roll of material to the first layer of the roll is disclosed. The paster tab includes a color contrast area suitable for optical detection to orient the paper roll. The paster tab further includes a weakened portion for promoting separation of the paster tab between the areas secured to the beginning end of the new roll and the first layer of the roll. A method of splicing the trail end of an expiring ribbon to the beginning end of a new roll of ribbon is further disclosed including adhesively securing the trail end of the old ribbon to both the top of the beginning end of the new ribbon and to a portion of the paster tab.

Abstract: A splicer is used in a corrugated cardboard production line. The splicer has a pair of pivotal levers having opposing jaws which open and close responsive to a pivoting of the levers. The faces of each of the jaws have a pair of pads for enabling a passage of a web of corrugated cardboard when the jaws are opened and for gripping the web when the jaws are closed. A guillotine blade is positioned between the pairs of jaw pads to grip the web when the jaws are closed. A pair of brake shoes are positioned downstream from the jaws for holding the web while the brake shoes are closed.

Abstract: A sheet splicer comprises two sheet roll support means, a table disposed above the sheet rolls held in place on the sheet roll support means and adapted to reciprocate above the table, and sheet guiding means disposed above the belt and adapted to reciprocate between the front and rear ends of the belt. While the sheet from the first sheet roll is being pulled out over the sheet guiding means positioned beforehand at one end of the belt, the leading end of the sheet from the second sheet roll is covered with an adhesive agent and held in place at a prescribed position on the belt at the other end thereof. As the sheet from the first sheet roll is completely drawn out of the sheet roll, the trailing end of this sheet is retained at that position and the sheet guiding means is moved to the other end of the belt. Consequently, the leading end of the sheet from the second sheet roll is allowed to be joined to the trailing end of the sheet.

Abstract: An automatic splicer is provided which is coupled to a continuous running processor. Short strips of roll film are inserted into the splicer and are automatically spliced together as they are advanced through the splicer. When no film is ready to be processed a leader is automatically spliced to the last roll of film to be processed. When the last roll of film is passed through the processor, the system may be placed on standby or stopped.

Abstract: The web leading edge of a paper roll for a rotary press or the like is held and prevented from raveling by three or more pieces of strong adhesive tape during handling and loading onto a paper feed machine of the printing press. On the paper feed machine, perforated tear lines are formed across the tape pieces by a device comprising a rotary perforating wheel, a mechanism for moving the wheel from one end to the other of the roll and also moving it against and away from all of the tape pieces, and a tape detecting device and a controller for automatically operating the mechanism. The tape pieces can then be easily torn to release the web leading edge immediately prior to web splicing.

Abstract: Method for automatically setting and joining reel-fed label strips or similar, whereby a first moving strip is first accelerated in relation to the assimilation speed of a user machine and then stopped, by means of a signal supplied by control means in a position whereby its labels correspond with the labels on a second stationary strip. A cutting unit is then operated for cutting the said two strips simultaneously along a cutting line. Subsequent operation of a joining unit then joins the said two strips along the said cutting line.

Abstract: An infeed mechanism coacts with a splicer mechanism for splicing successive rolls of web and for feeding the continuous web thus obtained into a rotary press or the like via a web storage mechanism, which normally stores therein a predetermined length of the web for delivery to the press or the like during splicing operation. The infeed mechanism includes a pair of roll holder arms carrying on their opposite ends an old web roll, from which the web is being delivered to the press or the like, and a new web roll to be spliced to the old web. Toward the end of the web delivery from the old web roll the roll holder arms are turned through a preassigned angle, with the result that the web from the old web roll travels close to the periphery of the new web roll. Then the new web roll is revolved about its own axis until an adhesive region thereon comes opposite to the old web.

Abstract: A strip supplying apparatus comprising a stationary frame structure, a movable frame structure movable with respect to the stationary frame structure along the side wall of the stationary frame structure and having a plurality of winding reels rotatable on the movable frame structure about an axis of rotation substantially in parallel with a direction in which the movable frame structure are moved with respect to the stationary frame structure, the winding reels being spaced in an equal pitch to each other, drive unit mounted on the stationary and movable frame structures for driving the movable frame structure to move with respect to the stationary frame structure by the pitch; unwinding unit mounted on the stationary frame for unwinding a strip unwound from each of the winding reels, joining unit mounted on the stationary frame structure for joining the trailing and leading end portions of the strips unwound from two adjacent winding reels, the unwinding and joining unit being held in line with one of the w

Abstract: A device, especially for cigarette-packaging machines, for joining the payed-out end of a strip, which had been wound into a reel, with the beginning of the strip of another reel. The device includes a buffer or storage device in which a certain length of the strip, which is conveyed over guide rollers, is stored, and out of which that amount of strip which is required for continuous operation is withdrawn during the joining process. The device is also provided with a separating and binding device. In order to provide for replacement of reels in a disturbance-free and semi- or fully-automatic manner at little structural expense, each reel is disposed in a cartridge on the wide sides of which the reel is mounted by means of a spindle which passes through the reel core and extends laterally out of the cartridge.

Abstract: A sleeve of plastic material from an extruder is molded by a blow molding apparatus into a tubular structure which includes two top walls longitudinally connected at base ends and apex ends. A splitting apparatus splits the longitudinally connected base ends apart to form two top walls. The top walls are oriented with their base ends upward. An extruder extrudes a flow of softened plastic which is divided by a manifold into four flows. Four applicators connected with the manifold apply beads of softened plastic along each top wall base end. A ribbed roller presses flexible strips against the plastic beads on each of the top walls. The flexible strips are fed from rolls of finite length mounted on a stand. The stand holds operating rolls and back up rolls. A splicing apparatus splices the trailing end of each operating roll with a leading end of the corresponding back up roll.

Abstract: Web splicing apparatus for use in a reelstand having static positions for at least two reels comprising means for rotating a fresh reel on the reelstand, means for guiding a portion of the expiring web into a position adjacent to the periphery of the fresh reel, and means for moving the expiring web into contact with the periphery of the fresh reel to cause web splicing when the speeds of the fresh reel and the expiring web have been synchronized.

Abstract: An apparatus and method of splicing polymeric webs using an ultrasonic welder and a web support means. There is a means to secure the trailing end of at least one first web and the leading end of at least one second web between the ultrasonic welder and the web support means. The trailing end of the first web and the leading end of the second web overlap between the ultrasonic welder and the web support means and are welded together.

Abstract: An improved process and apparatus for splicing a new web to a running web are proposed. The old web is cut off just behind the spliced point. Therefore, no tail is left on the web spliced. The running web is nipped at two points between two pairs of rolls. Because it is tight between the two points, a clear cut is possible with a single cutting blade.

Abstract: A machine for the splicing and dispensing of web carrying labels includes a plurality of supports upon which a set of reels of web can be unwound. A splicing table and a motorized web drawing station are located along a path of travel of web from the set of reels. A well and tray are provided for holding a sufficient quantity of web to meet demand during a splicing operation wherein the feed of web is switched from an empty reel to a full reel.

Abstract: In an accumulating and a splicing apparatus (30), a nearly exhausted tape (31) is advanced at a line speed along a path which extends between two groups (49, 51) of rollers. One of the groups of rollers is moved upwardly to a position above the other group of rollers and a length of the nearly exhausted tape is accumulated in a sinusoidal path just prior to splicing. The nearly exhausted tape is clamped at an input side of the accumulator after which a severing device (104) is moved transversely across that tape to form a trailing end portion. The severing device is allowed to be spring-returned to a position above the nearly exhausted tape and to one side thereof which permits joining facilities to carry a leading end of a tape (35) of a new supply downwardly to be spliced to the trailing end portion of the nearly exhausted tape.

Abstract: An improved splicing apparatus has a splicer head comprising a pair of opposed upper and lower traveling carriages each of which supports an idler roller, a nip bar which is swingable on its carriage between a ready position downstream from its corresponding idler roller and a web preparation position at the front of the splicer head and means for pushing the nip bar towards the opposite nip bar when both carriages are in their advanced positions. A knife carriage located on the head between the two nip bar carriages retracts when either nip bar carriage retracts to permit the nip bar on the opposite carriage to be swung to its web preparation position. The knife carriage supports a knife which can be actuated momentarily to urge it from a normal retracted position to an advanced position wherein it intercepts one of the nip bars when that nip bar is in its splicing position against the opposite nip bar.

Abstract: A splicing head for an automatic zero-speed web splicing machine is disclosed in which the end of a new roll of web material can be prepared for splicing directly on resilient nip rollers which are used by the machine to perform the splicing operation. In particular, the splicing head includes a knife carriage through which the web material passes and which can be moved transversely to the web travel direction under control of a cam and lever arrangement to introduce a predetermined loop of slack into the web material.The action of the cam and lever mechanism also positions a serrated preparation blade mounted on cantilever arms in front of the nip rollers for squarely trimming the edge of the web material.

Abstract: An apparatus is disclosed for attaching a running web which is withdrawn from a first source of supply to the leader of a fresh web which is stored in a second source of supply through the use of double sticky back adhesive strips. The apparatus comprises a supply frame provided with a conveyor assembly to transport a roll of material along the supply frame and a splicing head assembly mounted to the roll frame. The splicing head assembly has a plurality of idle rollers, a vacuum member adapted to hold the leading end of the fresh web and a cutting and clamping mechanism moveably mounted to the frame of the splicing head assembly. The cutting and clamping mechanism is adapted to be pivoted by a pneumatic cylinder to clamp the trailing web end from the expiring roll to the fresh web under tension and sever the web from the expiring roll between the dispensing roll and the location where the webs are clamped.

Abstract: A method and device for replacing a first, empty reel of strip material with a second, new reel in which the strips of the two reels are positioned over one another and partly cut thereby forming on them coincident lines of perforations or weakening, the strip from the empty reel then being broken along the associated partly cut line and the remaining part of the strip from the empty reel being connected to the other strip, the part of which disposed downstream from the associated line of cut then being cut off after the said connection between the strips.

Abstract: An apparatus for splicing webs from separate web rolls comprising a splicing station across which a web from one roll is moved, a vertically movable brake movable downwardly for engaging the web to momentarily interrupt the web, a fixed knife blade associated with the station beneath the web and a movable knife blade which is movable from a first position above the web to a second position below the web. The apparatus supports the taped end of a web from a second roll in position above the movable knife blade and is operated to move the movable knife blade to sever the trailing end of the web from the first roll and tape the leading end of the second roll to the severed end of the first roll providing a butt splice. The movable knife blade is manually removable from below the spliced web, after being moved downwardly to splice the webs, and is insertable to a position above the second web for a subsequent splicing of the web from the second roll to another roll.

Abstract: A machine for drying and butt-jointing unwound or sectioned wood veneer by continuous contact engagement comprises an effective drying and jointing zone, which includes an input conveyor and an output conveyor driven independently, each including an upper set and a lower set forming pairs of endless chains with pallets. The chains each have an active run and a return run; sprockets and roller means running on supporting guiderails drive said chains simultaneously. Pairs of said active runs face each other and compress the veneer therebetween and convey it in the longitudinal direction of the machine. The return runs are heated. First pressure means are positioned at the input of the effective zone, directly over the pairs of chains of the input conveyor; second pressure means are positioned at the output of the effective zone, directly over the pairs of chains of the output conveyor.

Abstract: A bobbin changer, for use in producing a continuous supply of web by joining the webs from a succession of reels, comprises a splicing device for joining the leading end of the web on each new reel to the web on the expiring reel; at least two cradles for receiving and supporting reels of web during use, each having means for locating the end of the web of a new reel in readiness for splicing; and means for movably supporting each of the cradles whereby each cradle in turn can be moved from a standby position to a position aligned with the splicing device in preparation for a splicing operation.

Abstract: This tape splicer makes it possible to splice tapes having patterns, colors, characters, figures printed repeatedly thereon in a predetermined pitch and containing in the patterns distinct printed or non-printed zone patterns having gaps of a specific length within one pitch in the longitudinal direction, while effecting the exact coincidence of the patterns on the trailing end portion of the preceding tape with those on leading end portion of the succeeding tape not only in the direction of width but also in the direction of length of the tapes, while the tape feed is being continued, without stopping the tape feeding machine.

Abstract: A web handling apparatus for splicing the terminal end of one roll of web stock to the lead end of a second roll of web stock in an uninterrupted feed to a machine. The first roll web is fed into the machine and a second roll web in parallel relationship to the first is guided by two turning bars laterally and again in parallel and overlying relationship to the first. Thereafter a splicer device joins the second roll to the first roll. The second turning bar is pivotally mounted on a vertical axis and movable vertically such that it can be moved from below the first roll web vertically upwardly and by pivoting about the vertical axis to a position whereat the second turning bar overlies the first roll web. Subsequently, the second roll web will overlie the first web in splicing relationship.

Abstract: There is provided an adhesive tape for the joining of webs, comprising a first tape provided on both its faces with adhesive, second and third cover tapes adhering to the faces of the first tape, and adhesive on the outside of the second cover tape, the adhesive on the outside of the second cover tape being stronger than the adhesive on its inside. The joinder is made by securing the outside face of the second cover tape to a carrier bar, removing the third cover tape, adhering the exposed face of the first tape to the tail end of a first web, removing the second cover tape with carrier bar attached from the first tape which continues to adhere to the web, and then adhering the freshly exposed face of the first tape to the head end of a second web.

Abstract: The roll winding machine for alternately forming a web roll on two driven arbors. It has a splicing device for receiving a continuously running web from a web accumulator. The splicing device has a splicing carriage for receiving and holding the distal end portion of a leader web and including cutting means for severing the running web so that a severed end portion is provided on the wound web roll and on the continuously running web. A web clamping means is provided to grip and prevent movement of the running web and to release both the severed end portion of the web of the wound roll and the running web. The splicing carriage is operative to cut the running web and affix the severed end portion of the running web to the distal end portion of the leader web so that the running web is wound on the other driven arbor upon movement of the clamping means to release the running web and leader web.

Abstract: Web-splicing apparatus comprises a web splicer and, associated therewith, an air mover and web-presentation means operable to present to the inlet end of the air mover the leading end of a first web extending from a reel and the leading end of a second web extending from another reel, which air mover is operable to feed the leading end of said first web from said presentation means to and through a splicing zone, to serve as a guide for subsequent continuous passage of that web and further operable to feed the leading end of the second said web from said presentation means to said splicing zone during continuous passage of the first web through the air mover. Web-severing means may be disposed for operation in the splicing zone and web-withdrawal means, suitably further air-mover means, downstream of that zone.

Abstract: For designing an automatic reel change system for use in connection with the processing of a web from a reel (7, 8) on a reel support (2), the web being sheeted in a transverse cutter (3), the invention takes the form of a system which makes do with a very narrow web part having a greater-than-normal thickness, but, nevertheless, safely joining the two webs together; the reel stand (or support) (2) has support parts (9 and 10) for at least two reels (7 and 8), from which, on reel change-over, a double web, made up of old web (11) (web coming to an end) and new web (12) (web from the new reel), may be taken, and near the path of the web, a cutting station (14) is present, able to be put into operation for cutting through the double web, a joining station (15), able to be put into operation the necessary time after operation of the cutting station (14), for joining the end (30), produced on cutting operation, of the old web (11) with the leading edge (31), produced on cutting operation, of the new web (12), usi

Abstract: A method and apparatus for applying tear tapes or the like to a transported web of cellulose wrapping material. A first portion of the travelling web is momentarily halted during the application of the tear tape, which takes place by a heat welding method. During the period of time while the first portion of the web is stationary, the remaining portions of the web continue to be transported at a constant speed, due to the effect of a pair of pivotally mounted diverting rollers which form web reserves on either side of the stationary first portion.

Abstract: A continuous web unwinder comprising at least one operative station for an operative reel of web that is being unwound and one reserve station for a full reel comprises a direction-changing roller for the web unwound from the operative reel that, on depletion of the operative reel, is displaceable to the reserve station where it defines a nip together with a circulating belt for introducing an adhesive-coated leading end from the full reel.

Abstract: An unwinding machine for adhesive tapes comprising a frame on which two tape reels are mounted and successively unwound by independent driving means outside the machine. Each of the reels is associated with a driven launching roller and the launching roller is displaced away from the tape being unwound from the operative roller whereas the launching roller associated with the spare reel which is at rest, is operated to engage the end of the tape therefrom to unwind the tape and bring the spare reel up to speed when the tape on the operative reel is approaching the end thereof. First and second rollers are provided for each reel adjacent the path of the tape from the respective reel to the location outside the machine, the rollers defining two opposed straight travel sections for the tape.