Abstract: A method for perforating a web with a perforating apparatus includes: rotating a cylinder about a longitudinal cylinder axis, wherein the cylinder comprises at least one shaped blade; operatively engaging a movable support with the cylinder; positioning an anvil disposed on the support so as to cooperate in contacting relationship with the shaped blade, wherein at least one of the blade and the anvil comprise a plurality of teeth, and wherein adjacent teeth are separated by a recessed portion; feeding a web between the cylinder and the support; and perforating the web as the anvil cooperates in contacting relationship with the shaped blade disposed on the rotating cylinder.

Abstract: A method for adjusting a pick height of a pick mechanism includes determining a media type for a media stack. When the media type is a first media type, the lift plate is raised to raise the media stack and pick mechanism until a first light blocking region of a flag extending from the pick mechanism blocks an optical path of a sensor indicating that the pick mechanism has reached a first pick height. When the media type is a second media type, the lift plate is raised to raise the media stack and pick mechanism such that the first light blocking region first blocks the optical path, a first light passing region of the flag subsequently unblocks the optical path, and then a second light blocking region of the flag subsequently blocks the optical path indicating that the pick mechanism has reached a second pick height.

Abstract: A winding machine includes an upper winding roller and a separation mechanism arranged at a location close to and below the upper winding roller. The separation mechanism includes a pivot shaft having an outer circumferential surface and at least one pinch arm having a connecting end coupled to the outer circumferential surface of the pivot shaft and a web engagement end extending outward from the outer circumferential surface of the pivot shaft. When the pinch arm is driven by a driving mechanism to rotate the web engagement end of the pinch arm to an engagement position where the web engagement end opposes the upper winding roller, the web engagement end of the pinch arm sucks and holds or guides a web material passing therethrough, whereby the web material is subjected to a pulling force induced by a roll of paper formed in a winding nip to tear and thus separate.

Abstract: A winding machine includes an upper winding roller and a separation mechanism arranged at a location close to and below the upper winding roller. The separation mechanism includes a pivot shaft having an outer circumferential surface and at least one pinch arm having a connecting end coupled to the outer circumferential surface of the pivot shaft and a web engagement end extending outward from the outer circumferential surface of the pivot shaft. When the pinch arm is driven by a driving mechanism to rotate the web engagement end of the pinch arm to an engagement position where the web engagement end opposes the upper winding roller, the web engagement end of the pinch arm sucks and holds or guides a web material passing therethrough, whereby the web material is subjected to a pulling force induced by a roll of paper formed in a winding nip to tear and thus separate.

Abstract: A method and an apparatus for exchange of cores in a machine for winding a continuous layer of paper (1) drawn by a drawing assembly (2) and wound around a succession of cores (3) by a winding assembly (4), comprising a step of interruption of the continuity of the layer (1), via a difference of speed of the layer.

Abstract: A winder for winding continuous webs or interleaved web segments having a machine direction and a cross-machine direction coplanar and orthogonal thereto into rolls is disclosed. The winder provides a plurality of winding spindles orbiting about a winding turret axis and a plurality of surface contact rolls cooperatively associated with a respective winding spindle. Each surface contact roll is capable of cooperative engagement with the respective winding spindle when the web material is disposed therebetween. The longitudinal axis of each surface contact roll is adjustable relative to the axis generally parallel to the winding turret axis when the web material is received by the winding spindle cooperatively associated thereto.

Abstract: Processes for initiating a web winding process, more particularly a processes for initiating a web winding process that doesn't require the use of a threading rope or manually threading a tail of the web like known processes are provided.

Abstract: A system and process is described for producing spirally wound products. According to the process of the present disclosure, two or more webs are conveyed together in a superimposed relationship. The webs are then separated such that one web goes to a first winding module while a second web goes to a second winding module, etc. In this manner, at least two spirally wound products can be produced simultaneously. The process and system of the present disclosure are particularly well suited for processing tissue webs, such as paper towels and bath tissue. The process of the present disclosure can effectively at least double throughput on existing winding systems.

Abstract: A method is described for obtaining a coreless roll of web material with a first portion of web material forming an inner nucleus of the roll and a second portion of web material wound around the outside of the inner nucleus. The two portions can be separated from one another and, for that purpose, an interface or discontinuity is created in at least one turn of the web material forming the roll between the inner nucleus and the second portion of web material. This facilitates the extraction of the inner nucleus from the outer portion of the roll.

Abstract: Disclosed is a technique of manufacturing an adhesive tape roll by which cut lines for cutting an adhesive tape can be regularly formed at a constant position. Provided are a winding roller (32) that winds the adhesive tape (2) fed out from a mother roll (31) and a cut-lines formation roller (33) that is provided between the mother roll (31) and the winding roller (32) and forms the cut lines (4) in the adhesive tape (2) at a predetermined interval. The winding roller (32) and the cut-lines formation roller (33) are rotated in synchronization with each other via predetermined gears (40).

Abstract: A winding device with a planetary-roller tear-off mechanism is disclosed, comprising a first winding roller which is driven to rotate in a predetermined direction and a plurality of core support plates that are arranged at a predetermined distance below the first winding roller, wherein an interval between the core support plates and the first winding roller is defined as a curved channel. A web material is conveyed through the curved channel to a winding zone to be wound as a roll. The planetary-roller tear-off mechanism includes a plurality of rotary arms and a plurality of planetary rollers. Each rotary arm is set at a predetermined location below the first winding roller, and having a driving end and a free end. Each planetary roller is rotatable, and mounted to the free end of the respective rotary arm.

Abstract: An apparatus and method for separating a web material are disclosed herein. The apparatus includes a bedroll and a chop off roll. The bedroll includes a bedroll blade and a bedroll web pin. The chop off roll includes a pin pad and a plurality of chop off roll blades. The bedroll web pin and the bedroll blade mesh with the pin pad and the chop off roll blades. The chop off roll blades are moved relative to the bedroll blade, stretching and separating the web material. The web pin perforates the web material and may completely or partially separate a portion of the web material. The web pin and the separated portion perforate the pin pad. The separated portion is stripped from the web pin as the pin passes out of the pin pad.

Abstract: A winder for winding a web to produce a rolled product is provided. The winder includes a web transport apparatus that is used for conveying the web. Also included in one exemplary embodiment is a plurality of independent winding modules. The winding modules are independently positioned to independently engage the web as the web is conveyed by the web transport apparatus. The winding modules may be configured to wind the web to form a rolled product by center winding, surface winding, and combinations of center and surface winding. The winding modules are structurally and operationally independent of one another where if one module is disabled, another may still operate to produce the rolled product without shutting down the winder.

Abstract: A multi-compartment plastic bag suitable for collecting and retaining a quantity of refuse and a quantity of recyclable items. The multi-part bag provides longitudinal compartments for the receipt of refuse or recycling. The longitudinal compartments are each sealed on three sides with a fourth (top) edge open for the insertion of refuse/recycling. The multi-compartment bag is initially constructed as a single unit and may be separated into the multiple components along one or more perforated mid-seams. Grab handles may be formed near the upper edge through perforated cutouts. The multi-compartment bag is designed to be used in standard single compartment trash receptacles. The construction of the bag lends itself to manufacture in a continuous multilayer sheet with longitudinal sealed seams along each edge of the multilayered sheet and at least one partial longitudinal sealed seam along an interior line or mid-seam of the multi-layered sheet.

Abstract: A web, such as a tissue or nonwoven web. Perforation lines in the web define sheets. The web is folded before being rolled or stacked, such that the intersection of the perforation lines and the folding line provides reliable dispensing. The web in roll or stack form, a method for forming the web, and a dispenser adapted for dispensing the web are also described.

Abstract: A method for rewinding a web of sheet material for making a log wound on a core in a winding zone formed between an upper winding roller and a lower winding roller. Upstream of the winding zone a cradle is provided for feeding the core connected to the support of the lower roller and located beneath the upper winding roller. At least a portion of the cradle is movable with respect to the support of the lower roller and is capable of lowering or rising towards/away from the upper winding roller. For each step of feeding a core, the movable portion can be displaced from a first position of load of the core to a second position wherein the core contacts the upper roller. When the upper roller contacts the core for reaching the winding zone it moves first on the movable portion and then on a fixed portion of the cradle that is integral to the support wherein the axle rotates of the lower roller.

Abstract: Rewinding method and rewinding machine of a paper web (1) for making a log (2a) comprising a feed roller (3) for feeding the web (1) and a winding cradle (4) in which a log (2a) is formed winding the paper web (1) about a core (20). The latter is supplied into the cradle (4) by introduction means by a loading unit that draws the cores (20) from a chute guide. Upstream from the feed roller (3) a perforation roller (11) is provided that acts in combination with a counter-roller (12) to make a plurality of transversal tear lines (15?) on the paper web (1) forming a plurality of panels (16) connected to each other united by the tear line. Upstream from the means for introducing the core (20), furthermore, a gluing means is provided (50) for application of a measured amount of glue (55) on a determined portion of the paper web (1), in particular upstream from (Ia), down-stream of (Ib), or bridging the tear line or clean cut (15).

Abstract: An apparatus for forming a wound roll of discrete overlapping sheets of web from a supply of continuous web. The web preferably is passed around a nip roller that steers the web onto the surface of a take-up core. A knife assembly including a knife blade extended from a knife holder is driven by a traversing mechanism across the width of the web to cut the wound web on the core into discrete sheets, the extended height of the knife blade being preferably the exact thickness of the web. In transverse cutting by the knife of the web wound on the take-up core, the knife holder travels on the outer surface of the web, thus assuring that the knife blade extends just to the outer surface of the next inner convolution of web, thereby cutting the continuous web into sheets without damaging previously wound web convolutions.

Abstract: An apparatus and method for separating a web material are disclosed herein. The apparatus includes a bedroll and a chop off roll. The bedroll includes a bedroll blade and a bedroll web pin. The chop off roll includes a pin pad and a plurality of chop off roll blades. The bedroll web pin, and the bedroll blade, mesh with the pin pad and the chop off roll blades. The chop off roll blades are moved relative to the bedroll blade, stretching and separating the web material. The web pin perforates the web material and may completely or partially separate a portion of the web material. The web pin and the separated portion perforate the pin pad. The separated portion is stripped from the web pin as the pin passes out of the pin pad.

Abstract: A process for assembling wave-cut trash bags for overlapping dispensing includes the steps of providing a flattened blown-film polymeric tube; providing sets of closely spaced, parallel seals extending across the entire width of the flattened blown-film polymeric tube at periodic intervals there along; providing a transversely extending line of perforations between the seals comprising each set of closely spaced, parallel seals; and providing a wave shaped line of perforations extending transversely across the entire width of the flattened blown-film polymeric tube at a location equidistance between adjacent closely spaced, parallel sets of seals. The flattened blown-film polymeric tube is separated along each transversely extending line of perforations and along each wave shaped line of perforations after which the leading end of each following trash bag is positioned in an overlapping relationship with the trailing end of the preceding trash bag to facilitate overlapping dispensing.

Abstract: A double-wound center-feed roll is disclosed which is formed from at least two webs each having lines of weakness which allow the webs to be separated into a plurality of sheets. The lines of weakness of one web are offset from those of the other such that in use the sheets can be dispensed singly from alternate webs. A first portion of the webs at the center of the roll is lightly bonded together while a second portion of the webs on the outside of the roll remains unbonded. The center-feed roll of the present invention reduces the occurrence of both web orientation reversal and streaming dispensing problems.

Abstract: The invention refers to a rewinding machine and a method for producing logs of paper; the machine comprises means for feeding a continuous paper web (2) along a predetermined path, means for operating a series of discontinuous transverse cuts in order to subdivide the web (2) into portions of sheets of predetermined length to be separated by tear, means for feeding tubular cores (1) upon each of which a preset number of sheets is to be wound to form a log, a cores (1)-guiding channel (C) which extends between a cores (1)-feeding station (A) and a station at which a log (RO) is formed, the said channel (C) being delimited in part by a fixed guide (3) and in part by a roller (RA) which cooperates for the feeding of the paper (2); the machine comprises a device (4, 5; 32, 31) able to deliver predetermined amounts of glue within said channel (C), the said device including first and second means (4, 31; 5, 32) located and acting on corresponding preset points being located between the station (A) for feeding the c

Abstract: A web transfer and chop-off assembly for a paper web rewinder used in a paper converting operation capable of maintaining positive control of the web at all times. The web transfer and chop-off assembly delivers a web to an empty core faced with glue and supported on a mandrel of a web winding turret assembly, at about the same time the web is severed from a fully wound core supported on a second mandrel on the turret assembly.

Abstract: The perforating unit comprises: a support (23) with at leat two fixed counterblades (25A, 25B); a first roller (27) revolving about its own axis and carrying a first series of rotary blades (29) acting in combination with a first (25A) one of said fixed counterblades; a second roller (31) revolving about its own axis nd carrying a second series of rotary blades (33) acting in combination with the second (25B) one of said fixed counterblades. The blades of the first series are arranged at a different pitch from the blades of the second series of blades.

Abstract: In a cross cutting device for a winding machine having at least a first carrier roll (11) wrapped by the web to be wound and a second carrier roll, both carrier rolls forming a winding bed for at least one roll (13) to be wound around a winding core (14), particularly for winding paper in form of one web or several webs in parallel, a cross cutting device to cut through the web after completion of a roll (13) is formed near the front end of a support beam (24) being conductible through a clearance gap (G) between a first and second carrier roll into a cutting position of the cross cutting device which is located at or close to the surface of said first carrier roll (11). Said support beam (24) can be pressed by means of a finished wrapped roll (13) against said wrapped first carrier roll (11).

Abstract: A winding machine and method for winding a material web onto a reel-spool in which the material web is transported over a support roll and a winding nip is formed between the support roll and the reel-spool. For changing of reel-spool, the material web is weakened before the support roll in the web travel direction. The material web is then separated at the weakened point. The winding machine includes a rotatable perforating unit, the perforating unit provided with a plurality of one of cutting elements and perforating elements and a counter-holder is arranged on an opposite side of the web from the perforating unit, the perforating unit and the counter-holder are movable relative to one another to weaken the web.