Patent Application
20130192785
The present invention relates to a web cutting apparatus of a papermaking machine and, in particular, to a web cutting apparatus for transferring a continuous web from a forming roll to a new spool.
The manufacturing of paper has evolved over the last centuries. Modern papermaking began in the early 19th century in Europe with the development of the Fourdrinier machine, consisting in the production of a continuous roll of paper rather than individual sheets. With the aim of reducing paper making manufacturing costs, the papermaking machine has further evolved and is capable of forming at very high speeds (i.e. around 100 km/h), a large band of paper web typically measuring up to 11 meters wide. At a final step of the paper making process, the continuous paper web is wound as a roll that is used in post-processing or distribution of paper.
The papermaking process is a continuous process which cannot be readily started and stopped without incurring considerable expense. Therefore, the rolls of paper which are formed must be started and cut off from the continuously formed web without interrupting the continuous production of paper.
When the roll is fully formed, the continuous paper web is severed and redirected onto a new spool. It is common practice to use a web cutting apparatus for cutting or notching the continuous paper web so as to form a tail end and a turn-up start for assisting in the re-threading of the web from a forming roll to a new spool. As the web travels at a very high speed, the web cutting apparatus must produce a cut of the web for effectively re-threading the new spool without causing a jam in the machine and interupting production.
In PCT patent application No. PCT/US97/07615 to Beloit Technologies inc., there is disclosed a web turn-up apparatus that uses two water jets and an adhesive material dispenser such as a tape or glue dispenser. The two water jets are oriented to cut the web as it is led over a winder drum. The jets are initially positioned above the web at a center portion and each jet travels toward an opposite edge portion of the web. The two jets form a turn-up start having substantially a V-shape. The dispenser applies the adhesive material onto the turn-up start so as to provide an instant engagement of the start with the new spool, thereby assuring thereon a tight, uniform and consistent initiation of the web.
In European patent application No. EP0997417 to Voith Paper Patent GmbH, there is disclosed a method and device for severing a running web. A cutter unit is movable relative to the plane of the web and is positioned at an underside of the web. In one example, there is a cutter unit with a single cutter, the cutter is adapted to travel from one edge of the web to the opposite edge. As the web is being wound onto the forming reel, the cutter produces an oblique cut line across the web. In another example, the cutter unit has two cutters, the cutters are each adapted to travel from a center portion of the web toward opposite edges. There is presented the cut lines produced by each of the cutters as the web is being wound onto the forming reel, the cut lines cross at a middle portion and extend toward the opposite edges of the web.
In U.S. Pat. No. 6,135,000 to Paprima Industries Inc., there is disclosed a water jet cutting apparatus mounted on a beam. The beam spans across the web and is transversal to the travel direction of the web. The cutting apparatus has water jet nozzles located on opposite sides of the beam. In one example, each jet is adapted to travel along the beam from a middle portion of the beam toward an outer portion of the beam forming a pointed start on the web. Paprima further presents the cut lines formed by each water jet, as the web travels the water jets initially positioned above a middle portion form cut lines that cross and extend to opposite edges of the web. In yet another example, there is a single water jet that travels from one edge of the web to an opposite edge of the web. A skilled person would understand that with such displacement of the water jet, as the web travels there would be formed an oblique start.
As presented in
The web portions (100a and 102a) of
In
Therefore, there is a need for a web cutting apparatus that forms a web tail portion for ending a forming spool and a web start portion for re-threading a new spool that are stable when traveling at high speed. Also there is a need for a web cutting apparatus that forms a web start portion for re-threading a new spool in a uniform edge alignment.
It has been discovered that it is possible in a paper making machine to perform a turn-up cut of a high speed traveling paper web by defining a shaped tail for ending a forming roll and also a shaped start for starting a new spool which are both shaped to remain effectively stable after the cut.
According to one aspect there is a web turn-up cutting apparatus for severing a continuous web that is traveling at very high speed in a travel direction. The speed of the traveling web can differ from one paper making machine to another, in common paper making machines, the web travels at speeds as high as 2000 meters per minute.
The web turn-up cutting apparatus comprises a first and second nozzles that are each connectable to a respective water supply hose and adapted to produce a respective water cutting jet. The nozzles are each mountable on a respective nozzle carriage and are transversely movable with respect to the travel direction of the web.
The web turn-up cutting apparatus further comprises a jet controller and a carriage controller. The jet controller is adapted to activate a water supply of each water supply hose to produce with the first and second nozzles a respective water cutting jet. The carriage controller is adapted to actuate the nozzle carriages to provide a transversal movement of the first and second nozzles.
Together, the first and second nozzles are adapted to define a substantially X-shaped cut on the traveling continuous web. The substantially X-shaped cut defines at least a substantially V-shaped tail for ending a forming roll, an opposite substantially V-shaped start for starting a new spool, a detachable first wing and a detachable second wing.
According to one embodiment, the nozzle controller is adapted to actuate the nozzle carriages to provide a transversal movement of the first and second nozzles from a respective edge of the continuous web to a middle portion of the continuous web and from the middle portion of the continuous web back to the respective edge of the continuous web.
In one example of this embodiment, each nozzle carriage is actuated to cross the continuous web from edge to edge. The second nozzle is positioned upstream from the first nozzle and the nozzle controller is adapted to actuate a first nozzle carriage to provide a transversal movement of the first nozzle from a first edge of the continuous web to a middle portion thereof and from the middle portion to a second edge of the continuous web. Simultaneously, the nozzle controller is adapted to actuate a second nozzle carriage to provide a transversal movement of the second nozzle from the second edge of the continuous web to a middle portion thereof and from the middle portion to the first edge of the continuous web, the second edge being opposite to the first edge.
In an alternate example of this embodiment, each nozzle carriage is actuated to cross only up to a middle portion of the continuous web and cross back to a respective edge of the continuous web and. The nozzle controller is adapted to actuate the first nozzle carriage to provide a transversal movement of the first nozzle from the first edge of the continuous web to a middle portion thereof and from the middle portion back to the first edge of the continuous web. Simultaneously, the nozzle controller is adapted to actuate the second nozzle carriage to provide a transversal movement of the second nozzle from the second edge of the continuous web to a middle portion thereof and from the middle portion back to the second edge of the continuous web, the second edge being opposite to the first edge.
According to another embodiment, the web turn-up cutting apparatus is further adapted to form a detachable middle strip. There is a second nozzle that is positioned upstream from a first nozzle and the nozzle controller is adapted to actuate the nozzle carriages to provide a transversal movement of the first and second nozzles for defining respectively a first cut line and a second cut line that cross in the middle portion of the continuous web. The first cut line and the second cut line cross at a first middle portion point and at a second middle portion point, wherein the first middle portion point is upstream from the second middle portion point. The detachable middle strip being defined by the first cut line and the second cut line between the first and second middle portion points.
According to another embodiment, the web turn-up cutting apparatus is a further adapted to form a single center cut line. The nozzle controller is adapted to actuate the nozzle carriages to provide a transversal movement of a first nozzle and of a second nozzle for creating respectively a first cut line and a second cut line that join in the middle portion of the continuous web. The single center cut line being defined by the joining of the first and the second cut lines.
According to another embodiment, the web turn-up cutting apparatus is further adapted to define a middle strip connecting the substantially V-shaped tail and the substantially V-shaped start. The nozzle controller is adapted to actuate the nozzle carriages to provide a transversal movement of a first nozzle and of a second nozzle for creating respectively a first cut line and a second cut line that remain separate in the middle portion of the continuous web, thereby forming the middle strip.
In an alternate embodiment, the web turn-up cutting apparatus comprises an adhesive applicator that is adapted to apply an adhesive on at least a portion of the middle strip and allow the at least portion of the middle strip to adhere on a winding surface of the new spool thereby causing the substantially V-shaped tail to sever from the continuous paper web for ending the forming roll.
According to another embodiment, the web turn-up cutting apparatus comprises an adhesive applicator. The adhesive applicator is adapted to apply an adhesive on at least a portion of the substantially V-shaped tail and allow the V-shaped tail to adhere on a winding surface of the forming roll as the substantially V-shaped tail is wound thereon.
In an alternate embodiment, the adhesive applicator is further adapted to apply an adhesive on at least a portion of the substantially V-shaped start and allow the V-shaped start to adhere on a winding surface of the new spool as the substantially V-shaped start is wound thereon.
According to another embodiment, the web turn up cutting apparatus comprises a wing adhesive applicator. The wing adhesive applicator is adapted to apply an adhesive on at least a portion of the first and the second detachable wings and allow the first and second detachable wings to engageably adhere to a driving drum of the papermaking machine and detach from the continuous paper web.
According to another embodiment, the carriage controller is adapted to actuate the nozzle carriages to provide a transversal movement of the nozzles, whereby the nozzles define together the substantially X-shaped cut on the traveling continuous web in less then 1 to 3 seconds.
According to another embodiment, the carriage controller is adapted to actuate each of the nozzle carriages from an initial position to a final position for defining with the nozzles the substantially X-shaped cut, wherein the final position is a subsequent initial position for performing a subsequent substantially X-shaped cut.
According to another aspect there is a method of performing a turn-up in a paper making machine. The method comprises defining a substantially X-shaped cut in a traveling continuous paper web. The substantially X-shaped cut forming at least a substantially V-shaped tail for ending a forming roll, an opposite substantially V-shaped start for starting a new spool, a detachable first wing and a detachable second wing. The method further comprises detaching the detachable first wing and the detachable second wing from the traveling continuous paper web. The method further comprises distancing the substantially V-shaped tail from the substantially V-shaped start by allowing the substantially V-shaped start to engage a new spool.
According to one embodiment, the method of performing a turn-up further comprises applying an adhesive on at least a portion of the traveling continuous paper web.
In one alternative, the adhesive is applied so that following the defining of the substantially X-shaped cut, there is adhesive on at least the detachable first wing and the detachable second wing.
The adhesive may allow the detachable first and second wings to engage a surface of a driving drum of the papermaking machine and detach from the continuous web as a respective detached first wing and a respective detached second wing. The method may further comprise removing the detached first wing and the detached second wing from the surface of the driving drum. The removal of the detached first and second wings may be done in various ways, one way is to remove the wings by scraping a surface of the driving drum.
In another alternative, the adhesive is applied so that following the defining of the substantially X-shaped cut, there is adhesive applied on the substantially V-shaped start, thereby allowing the substantially V-shaped start to engage the new spool.
In the embodiment in which the substantially X-shaped cut forms a middle strip that connects the V-shaped tail and the V-shaped start, the method may further comprise applying an adhesive on at least a portion of the middle strip. As the applied adhesive on the at least portion of the middle strip contacts the new spool, the middle strip severs and this allows the at least portion of the middle strip and the connected V-shaped start to engage the new spool.
According to one embodiment, the defining the substantially X-shaped cut is made in accordance with a method of controlling nozzle carriages as further described below.
According to another aspect there is a method of controlling nozzle carriages in a web turn-up cutting apparatus of a paper making machine. The nozzle carriages are adapted to provide a transversal movement to a respective first nozzle and second nozzle with respect to a traveling direction of a paper web.
The method comprises positioning a first nozzle carriage near a first edge portion of the paper web and positioning a second nozzle carriage near a second edge portion of the paper web.
The method further comprises displacing the first nozzle carriage from near the first edge portion of the paper web to near a center portion of the paper web and defining at least in-part a V-shaped tail for ending a forming roll and in-part a first detachable wing, when a water supply to the first nozzle is activated. In addition, method comprises displacing the second nozzle carriage from near the second edge portion of the paper web to near a center portion of the paper web and defining at least in-part the V-shaped tail and in-part a second detachable wing, when a water supply to the second nozzle is activated.
The method further comprises moving one of the first and second nozzle carriage from near the center portion of the paper web to near the first edge portion of the paper web and defining at least in-part a V-shaped start for re-threading a new spool and in-part one of the first and second detachable wings, when a water supply to the respective nozzle is activated. In addition, method comprises moving another one of the first and second nozzle carriage from near the center portion of the paper web to near the second edge portion of the paper web and defining at least in-part the V-shaped start end and in-part another one of the first and second detachable wings, when a water supply to the respective nozzle is activated.
According to one embodiment, each carriage is adapted to move back to its respective originating edge. In the method, the moving one of the first and second nozzle carriage is the moving of the first nozzle carriage from near the center portion of the paper web to near the first edge portion of the paper web and the moving another one of the first and second nozzle carriage is the moving of the second nozzle carriage from near the center portion of the paper web to near the second edge portion of the paper web.
According to another embodiment, each carriage is adapted to cross over the width of the paper web. In the method, the moving one of the first and second nozzle carriage is the moving of the second nozzle carriage from near the center portion of the paper web to near the first edge portion of the paper web and the moving another one of the first and second nozzle carriage is moving of the first nozzle carriage from near the center portion of the paper web to near the second edge portion of the paper web.
According to another embodiment, the carriages are adapted to displace the nozzles so as to define at least a center portion cut line. In the method, the displacing the first nozzle carriage and the second nozzle carriage comprises aligning the first nozzle carriage and the second nozzle carriage at an alignment line near the center portion of the paper web. The displacing thereby defines at least a center portion cut line and in-part the first and second detachable wings.
In one alternative, the carriages are adapted to displace the nozzles so as to define a detachable middle strip. In the method, the displacing the first nozzle carriage and the second nozzle carriage further comprises displacing the first nozzle carriage and the second nozzle carriage beyond the alignment line while remaining near the center portion of the paper web. The displacing thereby defines two center portion cut lines and forms a detachable middle strip.
According to another embodiment, the carriages are adapted to displace the nozzles so as to define a middle strip that connects the V-shaped tail and the V-shaped start. In the method, the displacing the first nozzle carriage and the second nozzle carriage comprises maintaining a distance between the first nozzle carriage and the second nozzle carriage near the center portion of the paper web. This displacing thereby forms a middle strip that connects the V-shaped tail and the V-shaped start.
According to another aspect there is a machine-readable data storage medium. The machine-readable data storage medium comprises machine-executable instructions for controlling a definition of a substantially X-shaped cut in a traveling continuous paper web of a papermaking machine. The substantially X-shaped cut forms at least a substantially V-shaped tail for ending a forming roll, an opposite substantially V-shaped start for starting a new spool, a detachable first wing and a detachable second wing. The controlling is made in accordance with the method of controlling the nozzle carriages as described above.
According to yet another aspect there is a method of manufacturing paper in a papermaking machine. The method comprises producing a continuous web of paper, displacing the continuous web of paper in a predetermined travel direction and winding the continuous web of paper around a forming roll. The method further comprises performing a turn-up as defined above, positioning a new spool near the forming roll, accelerating a rotation of the new spool up to a winding speed and threading the turn-up around the new spool. In addition, the method comprises ending the winding of the continuous web of the paper around the forming roll as a formed roll, displacing the formed roll away from the new spool and decelerating a rotation of the formed roll until a full stop.
The invention will be better understood by way of the following detailed description of embodiments of the invention with reference to the appended drawings, in which:
Presented in
Although the present is described according to a paper making machine that provide a paper web travelling speed of up to around 100 km/h, the present is not limited to such paper making machines. The present also applies to paper making machines that provide a slower or even faster paper web travelling speed.
Further presented in
A skilled person will understand that the forming roll 206 and the new spool 208 may each be independently driven by a motor while in friction contact with the driving drum 209. This allows a better control of the paper winding process so as to produce a tighter winding or the paper web around forming roll 206 or new spool 208.
To replace the forming roll 206, the new spool 208 is gradually brought to a suitable rotational speed as it is lowered onto the surface of the driving drum 209. When the new spool 208 contacts the driving drum 209, the rotational speed of the two is similar and slowing down of the driving drum is thereby prevented. Also, as the new spool is gradually brought to speed there is less of a choc that is being absorbed by the new spool 208 and by the supporting means thereof. When the forming roll 206 reaches its full capacity, the paper web 202 is severed to define a web turn-up for starting a winding of the web around the new spool 208. The formed roll 206 is then gradually moved away from the driving drum and its rotational speed is gradually slowed down to a full stop thereby preventing unspooling of the roll 206. As the forming roll 206 is moved away from the driving drum, the new spool 208 is gradually brought around the driving drum 209 while remaining in contact therewith so as to be positioned in place of the forming roll 206.
For severing the continuous paper web 202, the paper making machine 200 has a web turn-up cutting apparatus 210, as further presented in
In
According to one aspect, the cutting apparatus 210 has a first nozzle 212A and a second nozzle 212B that are each connectable to a respective water supply hose and adapted to produce a respective water cutting jet. The nozzles (212A and 212B) are each mounted on a respective nozzle carriage (214A and 214B) and are transversely movable with respect to the travel direction of the web.
A skilled person will understand that the first and second nozzles (212A and 212B) may be replaced by any other paper web cutting means or multidirectional paper cutting means such as a laser beam emitter, a knife, etc. without departing from the scope of the present web turn-up cutting apparatus 210.
Moreover, it is understandable that the cutting apparatus 210 may be mounted on any other kind of suitable support that allows a transversal displacement of the nozzles (212A and 2128) across a width of the travelling paper web 202.
Presented in
As presented in
The substantially V-shaped tail 404 has a single tip and is cut to shape for remaining effectively stable as it is pulled over the drum 209 and wound around the forming roll 206. The desirable length and profile of the substantially V-shaped tail 404 may vary from one application to another and depends on the type of paper web 202 being produced as well as the sized of the formed roll 206.
The substantially V-shaped start 406 has also a single tip and is also cut to shape for remaining effectively stable as it travels over the drum 209 for engaging the new spool 208. The length and shape of the V-shaped start 406 is dependent on the traveling speed of the paper-web 202 and also on the traversing speed of the nozzles (214A and 214B).
It is important to recognize that as the V-shaped start 406 is being cut in the paper web 202, the V-shaped tail 404 is fully formed and severed from the continuous paper web 202. Consequently, the remaining portions of the continuous paper web 202 that include the two wings 408 and 410 and the V-shaped start 406 must have enough momentum to evenly and stably travel up to the nip formed by the driving drum 209 and the new spool 208. Note that in one example, as the cut 402 begins, the tips of the two wings 408 and 410 have enough momentum to carry them to the nip and when the tail 404 is fully severed the start 406 has enough moment to carry it to the nip. As the start is being severed, the tips of the two wings 408 and 410 are under tension as they are being pulled by the nip thereby allowing maintaining sheet tension until the cut 402 is completed. When the single tip of the V-shaped start 406 reaches the nip it is adapted to engage the new spool 208 and an even pull is then applied to the rest of the paper web 202 as it is being wound around the new spool 208.
In one embodiment as presented in
In another embodiment and as further presented in
In yet another embodiment and as further presented in
In yet another embodiment, there is a de-ionizer for de-ionizing the paper web surface of the formed roll 206 and removing static on the surface thereof. This prevents the wings (208 and 210) from sticking onto the formed roll 206 and facilitates the directing of the wings into the chute 422.
It shall be understood that the various ways of directing the wings (408 and 410) into the chute 422 as described above may be performed separately or in combination, without departing from the scope of the present invention.
There are various ways of defining the substantially X-shaped cut 402 with the cutting apparatus 210. Presented in
It shall be understood that the middle portion 502 may have a determined width and that the carriages (214A and 214B) may be controlled to travel up to an edge of the middle portion 502 or in proximity of the middle portion 502. Moreover the carriages may overlap at a center line 504 of the middle portion 502 or even go slightly beyond the center line 504.
Another way of defining the substantially X-shaped cut 402 is to allow the nozzle controller to actuate the nozzle carriages (214A and 214B) for them to cross over the continuous web 202 from edge to edge. Presented in
There are various ways of positioning the two tracks. For instance, a first track may be positioned upstream and another may be positioned downstream with respect to the traveling direction of the paper web. In this case, as there is normally limited space near the driving drum 209, it may be desirable that the two tracks be positioned as close as possible to each other. Moreover, the positioning of the tracks as close as possible to each other may further be desirable for obtaining a symmetric X-shaped cut 402 and assuring an adequate level of symmetry in the substantially V-shaped start 406 for evenly re-threading the new spool 208.
For defining a symmetrical X-cut it may be desirable to orient the nozzle with a slight angle so that the nozzle may direct a water jet on a center portion 610 or right on a center line 612 between the two tracks such as presented in
In another instance, the first tract may be positioned above the other track, as presented in
A skilled person will understand that any combination of the embodiments described in the
It is to be understood that as the cutting apparatus of
In the above described web turn-up cutting apparatus 210, it is possible for the carriage controller 304 to actuate the nozzle carriages (214A and 214B) and allow the nozzles (212A and 212B) to define together the substantially X-shaped cut on the traveling continuous web 202 in less than 3 seconds. It is however understandable that the substantially X-shaped cut may take longer than 3 seconds to be defined, depending on the width of the paper web, the speed of the nozzles or the speed of the paper web.
It shall further be understood by the various embodiments of the web turn-up cutting apparatus 210 described herein that the carriage controller is adapted to actuate each of the nozzle carriages (214A and 214B) from an initial position to a final position for defining with the nozzles the substantially X-shaped cut. Once in the final position the nozzle carriages are readily positioned for performing a subsequent cut. The nozzle carriages do not require being controlled for returning to an initial position for performing a subsequent cut. As the nozzle carriages do not require being re-positioned for performing a subsequent cut, the nozzle carriage traveling distance on the track is limited and this may extend the operational life of the track and nozzle carriage. Moreover, this prevents water dripping from the nozzles to unnecessarily wet a span of the traveling web as it normally may when being re-positioned for a subsequent cut.
The shape of the substantially X-shaped cut 402 differs depending on a trajectory and speed of each carriage. The trajectory and speed of each carriage may be controlled for defining a desired start and tail profile according to a property of the paper web. Presented in
According to one embodiment and as presented in
According to another embodiment and as presented in
According to another embodiment and as presented in
In an alternate embodiment and as presented in
A skilled person will understand that the carriages may be controlled at a number of various predetermined speeds for defining the substantially X-shaped cut without departing from the scope of the present invention.
According to another embodiment and as presented in
Presented in
Presented in
Presented in
As presented in
In another embodiment, the adhesive applicator 1302 of
Presented in
According to an alternate embodiment, the wing adhesive applicator 1502 is further adapted to apply the adhesive 1504 on at least a portion of the detachable middle strip 804 and allow the detachable middle strip 804 to engageably adhere to the driving drum 209, as concurrently presented in
In anyone of the embodiments illustrated in
Presented in
Presented in
In anyone of the embodiments illustrated in
A skilled person would understand that any of the above described paper making machine can further have the adhesive applicator 1102 for additionally applying adhesive 1104 onto the substantially V-shaped tail 404 as presented in
It shall be understood that one or more of the adhesive applicators (902, 1102, 1302 and 1502) may be replaced by an electric charge applicator for electrically charging at least a part of a corresponding portion defined by the substantially X-shaped cut. The electrically charged part then being adapted to statically adhere to a respective new spool, driving drum or formed roll.
In an alternate embodiment, the adhesive applicator 1502 is replaced by the driving drum 209 defining a perforated surface for applying a controllable air suction force on the surface of the driving drum. The controllable air suction force may be activated for allowing the wings (408 and 410) or middle strip 804 to adhere on the surface of the driving drum. The controllable air suction force may further be deactivated for allowing the wings (408 and 410) or middle strip 804 to fall off from the surface of the driving drum and to fall into a collector for re-pulping.
In yet another embodiment as presented in
It shall be understood that the adhesive applicators (902, 1102, 1302 and 1502, 2102) may be adapted to apply a permanent adhesive or a non-permanent adhesive such as water or a removable sealant. Note that for re-pulping purposes, it may be required that the adhesive applicators only apply a re-pulpable adhesive.
According to another aspect, there is a method of performing a turn-up in a paper making machine, as presented in
The method further comprises detaching 2204 the detachable first wing 408 and the detachable second wing 410 from the traveling continuous paper web 202 as concurrently presented in
The method further comprises distancing 2206 the substantially V-shaped tail 404 from the substantially V-shaped start 406 by allowing the substantially V-shaped start 406 to engage the new spool 208. There are various ways of distancing the substantially V-shaped tail and start (404 and 406) from each other, one way is to apply an adhesive onto the start 406 and thereby allowing the start 406 to engage the new spool 208 and wind thereon. The forming roll 206 continues to rotate and the tail 404 is wound thereon. Another way of distancing the substantially V-shaped tail and start (404 and 406) is by severing a middle strip 806 as presented in
Presented in
In yet another instance the adhesive could be applied for allowing the detachable wings (408 and 410) or the detachable middle strip 804 to engage a surface of a driving drum 209 of the papermaking machine and detach from the continuous web 202 as a respective detached first wing, a respective detached second wing and a detached middle strip, as presented in
It should be understood that applying 2402 an adhesive could also mean applying 2402 an electric charge for the various portions (404, 406, 408, 410, 804 and 806) formed by the substantially X-shaped cut to statically engage a respective one one of the new spool 208, formed roll 206 or driving drum 209.
When the driving drum 209 defines a controllable air suction force on its surface for allowing the wings (408 and 410) or the detachable middle strip 804 to adhere thereon, the applying 2402 an adhesive on the wings (408 and 410) or the detachable middle strip 804 could be replaced by activating the controllable air suction force on the surface of the drum 209.
The method 2200 may further comprise removing 2404 the detached first wing 2502, the detached second wing 2504 or the detached middle strip 2506 from the surface of the driving drum 209. The removal of the detached first and second wings may be done in various ways, one way is to remove the wings by scraping a surface of the driving drum with a doctor 2602, as presented in
According to another aspect and as presented in
The method 2700 further comprises displacing 2706 the first and second nozzle carriages from near the respective edge portions of the paper web to near a center portion of the paper web. When a water supply to the first and second nozzles is activated the displacing 2706 of the two carriages (214A and 214B) defines at least in-part a V-shaped tail 404 for ending a forming roll and in-part a first and second detachable wings (408 and 410), as concurrently presented in
The method 2700 further comprises moving 2708 one of the first and second nozzle carriage from near the center portion of the paper web to near the first edge portion of the paper web and moving 2708 another one of the first and second nozzle carriage from near the center portion of the paper web to near the second edge portion of the paper web. When a water supply to the first and second nozzles is activated the moving 2708 of the two carriages (214A and 214B) defines at least in-part a V-shaped start 406 for re-threading a new spool and in-part the first and second detachable wings (408 and 410), as concurrently presented in
In one embodiment, each carriage is adapted to move back to its respective originating edge, such as presented in
In another embodiment, each carriage is adapted to cross over the width of the paper web from a respective edge to an opposite respective edge, such as presented in
According to another embodiment as presented in
In one alternative as presented in
In another alternative as presented in
In another alternative as presented in
According to another aspect as presented in
According to one embodiment as presented in
The machine readable data storage medium 2802 and the machine-executable instructions 2804 may have various forms. In one instance the, machine-executable instructions 2804 is a script for being uploaded into the controller (302 and/or 304). According to another instance, the machine-executable instructions 2804 is an upgrade to a script that is uploadable into the controller (302 and/or 304).
In
This application is a non-provisional of U.S. Provisional Application Ser. No. 61/592,545, filed Jan. 30, 2012, which is incorporated herein by reference in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 61592545 | Jan 2012 | US |
