Gas Or Vapor Circulation For Contact With Treated Material Patents (Class 34/114)
  • Patent number: 10434796
    Abstract: A dryer for conveying and drying an object to be dried, the dryer includes a conveyor including a first path and a second path along which the object to be dried is conveyed, a conveyance direction of the second path being different from a conveyance direction of the first path, and a blower to blow air onto the object to be dried. The blower includes a first air outlet that faces the first path and blows the air onto the object to be dried conveyed along the first path, and a second air outlet that faces the second path and blows the air onto the object to be dried conveyed along the second path.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: October 8, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Kitaoka, Toshihiro Yoshinuma, Ken Onodera
  • Patent number: 10260200
    Abstract: The invention relates to a Yankee drying hood arrangement (1) which is shaped to be fitted over a Yankee drying cylinder (2) such that the drying hood arrangement (1) can cover a part (4) of the circular cylindrical surface (3) of a Yankee drying cylinder (2). The Yankee drying hood arrangement (1) comprises a plurality of nozzle boxes (5) distributed equidistantly around an imaginary axis (X) such that, when the Yankee drying hood arrangement (1) is fitted over a Yankee drying cylinder (2), the nozzle boxes (5) are spaced from the circular cylindrical surface (3) of the Yankee drying cylinder (2) but form a curved structure (6) that follows the outer contour of the circular cylindrical surface (3) of the Yankee drying cylinder (2).
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: April 16, 2019
    Assignee: Valmet S.P.A.
    Inventors: Olli Jaakko Antero Saikkonen, Klavdij Lasic, Luca Moscatelli, Luigino Furlan
  • Patent number: 10234197
    Abstract: A dryer for a textile web includes a drying chamber having at least one air-permeable drum arranged in the drying chamber to rotate, wherein the drum includes an end face constituting an axially arranged suction side, the textile web is wrapable at least partially around the drum and heated drying air is flowable through the textile web. A hot gas source provides heated gas. A ventilator forms a suction draft via the suction side of the drum with drying air from inside of the drum and drying air that recirculates back into the drying chamber. At least one hot gas feeding ring encloses the suction draft and is configured to permit the hot gas from the hot gas source to flow essentially completely into the suction draft.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: March 19, 2019
    Assignee: TRUETZSCHLER GMBH & CO. KG
    Inventor: Markus Böhn
  • Patent number: 10065433
    Abstract: Systems and methods for concentric arrangement of web conditioning modules in a dryer of a printing system. In one embodiment a dryer includes a drum, first rollers positioned in an arc around the drum to define a web path between an entrance of the dryer and the drum, and second rollers positioned along the arc between the first rollers and the drum that reverse the web path between the drum and an exit of the dryer. The dryer further includes first web conditioners positioned along the arc and beyond the first rollers from the drum that direct energy toward a portion of the web path that is between the entrance of the dryer and the drum. The dryer further includes second web conditioners positioned along the arc between the second rollers and the drum that direct energy toward a portion of the web path that wraps around the drum.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Stuart James Boland, Dilan Nirushan Fernando, Scott Richard Johnson
  • Patent number: 10060675
    Abstract: Systems and methods for adjustable interlacing of drying rollers in a print system. One system is an apparatus that includes first rollers that conduct heat from a heat source, and dry a web of print media as the web travels over a front side of the first rollers in a first direction. A last roller of the first rollers turns the web in a second direction. The apparatus also includes second rollers disposed a distance above the first rollers and that transport the web in the second direction. The apparatus further includes a movement mechanism that reduces the distance between the second rollers and the first rollers to cause the second rollers to occupy spaces between the first rollers so that the web traveling in the second direction contacts a back side of the first rollers to further dry the web.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: August 28, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Stuart J. Boland, Scott R. Johnson, Dilan Nirushan Fernando, Casey E. Walker
  • Patent number: 9908342
    Abstract: Systems and methods for concentric arrangement of web conditioning modules in a dryer of a printing system. In one embodiment a dryer includes a drum, first rollers positioned in an arc around the drum to define a web path between an entrance of the dryer and the drum, and second rollers positioned along the arc between the first rollers and the drum that reverse the web path between the drum and an exit of the dryer. The dryer further includes first web conditioners positioned along the arc and beyond the first rollers from the drum that direct energy toward a portion of the web path that is between the entrance of the dryer and the drum. The dryer further includes second web conditioners positioned along the arc between the second rollers and the drum that direct energy toward a portion of the web path that wraps around the drum.
    Type: Grant
    Filed: February 26, 2017
    Date of Patent: March 6, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Stuart James Boland, Dilan Nirushan Fernando, Scott Richard Johnson
  • Patent number: 9901657
    Abstract: A system for use in bone cement preparation can include a chamber for intermixing a liquid monomer and solid polymer components, a container, a vacuum channel, and a filter. The mixing chamber can be configured to hold a non-liquid, polymer powder component of a bone cement. The container can be configured to hold a liquid component of the bone cement. The system can have a first interface disposed between the mixing chamber and the container and a second interface disposed between the mixing chamber and the vacuum channel. The second interface can to receive and position the filter between the mixing chamber and the vacuum channel. The vacuum channel can direct a partial vacuum to draw the liquid component from the container into the non-liquid component in the mixing chamber to intermix the components and to thereby provide a settable bone cement.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: February 27, 2018
    Assignee: DFine, Inc.
    Inventors: Harry Kwan, Andrew Kohm, Csaba Truckai
  • Patent number: 9605900
    Abstract: Systems and methods for adjustable interlacing of drying rollers in a print system. One system is an apparatus that includes first rollers that conduct heat from a heat source, and dry a web of print media as the web travels over a front side of the first rollers in a first direction. A last roller of the first rollers turns the web in a second direction. The apparatus also includes second rollers disposed a distance above the first rollers and that transport the web in the second direction. The apparatus further includes a movement mechanism that reduces the distance between the second rollers and the first rollers to cause the second rollers to occupy spaces between the first rollers so that the web traveling in the second direction contacts a back side of the first rollers to further dry the web.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: March 28, 2017
    Assignee: Ricoh Company, Ltd.
    Inventor: Alyne Hazard
  • Patent number: 9273429
    Abstract: A method and apparatus for treating a wet or moist lignocellulosic material at a moisture content which is in a range from above the Xfsp value of the material down to about 0.1 kg water/kg dry below the Xfsp value, where Xfsp is the fiber saturation point value, with rapid warming of the wet or moist lignocellulosic material to a level that natural polymers in the lignocellulosic material soften, which changes the microstructure and results in improved properties of the lignocellulosic material.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: March 1, 2016
    Inventors: W. J. Murray Douglas, S. J. Hashemi
  • Patent number: 8925217
    Abstract: Method for steam recapture in the drying of a tissue paper web with a cylinder that is fed from a live steam network and with a hot air hood that flows hot air onto the tissue paper web, includes the steps of: removing condensate from the cylinder; compressing the condensate to a first pressure level essentially corresponding to that of the live steam network; heating the condensate by heat exchange with the exhaust air from the hot air hood; vaporizing the condensate; and feeding generated steam into the live steam network.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: January 6, 2015
    Assignee: SCA Hygiene Products AB
    Inventors: Martin Wiens, Bruno Dexler, Jan Hieke, Josef Heintz
  • Patent number: 8544184
    Abstract: A machine for the production of a fibrous web. The fibrous web being a paper web, a cardboard web or a tissue web. The machine including a hot air hood, an upstream drying zone, a downstream dryer cylinder and a dryer hood. The upstream drying zone has an area in which the moving fibrous web is treated with hot air from the hot air hood, the hot air hood being allocated to the upstream drying zone. The downstream dryer cylinder is a Yankee-Cylinder. The dryer hood is associated with the downstream dryer cylinder for further drying of the fibrous web. The hot air for the hot air hood is at least partially recovered from the dryer hood which is associated to the downstream drying cylinder.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: October 1, 2013
    Assignee: Voith Patent GmbH
    Inventors: Luiz C. Da Silva, Thomas Scherb, Ronaldo Parucker, Oswaldir Rizzatto
  • Patent number: 8261465
    Abstract: Device and process for producing and treating a fibrous web. The device includes a moistening unit structured and arranged to simultaneously influence a cross machine moisture profile of the web and the curl of the web independently of each other. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: September 11, 2012
    Assignee: Voith Paper Patent GmbH
    Inventors: Roland Mayer, Antje Stein, Markus Oechsle, Frank Wegehaupt
  • Patent number: 8196314
    Abstract: Disclosed is an apparatus for drying a fibrous web, in particular a paper web, paperboard web or tissue web, by way of hot air, on which the fibrous web is charged with the supply air for the drying from a supply air chamber and on which exhaust air from the drying operation passes into an exhaust air chamber, whereby the exhaust air from the exhaust air chamber is supplied at least partly to the suction side of a pressure booster and at least a part of the supply air from the pressure side of the pressure booster is supplied to the supply air chamber.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: June 12, 2012
    Assignee: Voith Patent GmbH
    Inventor: Christian Munch
  • Patent number: 8176650
    Abstract: A through-air dryer system that diverts the airflow within the through-air dryer during warm up and cool down from the normal airflow during the drying of paper in the papermaking process. During warm up and cool down, a majority of the airflow is supplied to one of the dryer's heads and extracted through the opposite head to reduce thermal stresses. If needed to further reduce thermal stresses, a minority of the airflow is supplied through the dryer's shell.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: May 15, 2012
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Frank S. Hada, Robert J. Seymour, Marek Parszewski
  • Patent number: 8123908
    Abstract: The object of the invention is an arrangement and a method for controlling underpressure in the drying section of a paper machine or the like in connection with a pocket space between two drying cylinders and one turn roll. The object of the invention is also a runnability component in a paper machine or the like, such as a board or a finishing machine. The runnability component comprises an entry side, a lower part and an exit side, which are in contact with each other and delimit the volume of a box-like runnability component, and a sealing element, which is arranged in connection with the entry side surface and which divides the surface into a first part and a second part. The runnability component is provided with a channel, which extends from the first part of the entry side surface to its second part and connects them.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: February 28, 2012
    Assignee: Metso Paper, Inc.
    Inventor: Nenad Milosavljevic
  • Patent number: 8117765
    Abstract: The invention relates to an arrangement and a method for sealing of a pocket space between drying cylinders (2, 3) in a paper machine or similar. In the method for sealing of the pocket space: a wire (5) is moved supported by the first and the second cylinder (2, 3, 4), a gap between the pocket space (15) and the space outside (24) it is sealed by a runnability component (6), which comprises at least a sealing surface (19, 22) and a blow nozzle (21) provided with a nozzle slot (26) of a size of 0.5-3.5 mm and elongated in the cross direction, the sealing surface (19, 22) is kept at a distance of 5-15 mm from the moving wire (5), air is blown with the blow nozzle (21) from a blow point (27) and along the sealing surface (22) towards a sealing point (16) and further via the sealing point (16) away (24) from the pocket space. The invention comprises also a runnability component (6) and a method for manufacturing the same.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: February 21, 2012
    Assignee: Metso Paper, Inc.
    Inventors: Rami Aaltonen, Pekka Saarikivi
  • Patent number: 8118978
    Abstract: The invention relates to an arrangement and a method of a paper machine or the like for saving energy in the drying section. According to the invention, in the drying section of a paper machine or the like in connection with a pocket space (9) between two drying cylinders (1, 2) and one turn roll (3), there are the following delimiting said pocket space (9): a first drying cylinder (1), a second drying cylinder (2), a turning suction roll (3) and a wire (5, 5a, 5b), which is arranged to travel from the first drying cylinder (1) to the turning suction roll (3) and from there on to the second drying cylinder (2). The arrangement further comprises a box-like runnability component (10) and a sealing element (19) arranged in the lower part of the runnability component (10), in the gap between the runnability component and the turning suction roll (3) in order to seal said gap and thereby to promote the operation of the turning suction roll (3).
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: February 21, 2012
    Assignee: Metso Paper, Inc.
    Inventors: Rami Aaltonen, Nenad Milosavljevic
  • Patent number: 8088255
    Abstract: An air stabilization system employing two substantially parallel, codirectional Coanda nozzles, that are positioned adjacent a flexible moving web, with each nozzle exhausting gas at the same downstream machine direction, subjects the moving web to shear forces effective to stabilize the web. Each nozzle includes an elongated slot that is substantially perpendicular to the path of the moving web and a backstep located downstream of the direction of airflow extending from the Coanda slot. The two Coanda nozzles serve as separate points along the machine direction for controlling the height of the moving web. By modulating the velocities or other parameters of gases exiting the Coanda nozzles, the shape of the moving web between the nozzles can be manipulated to present a planar contour for measurements. The air stabilization system can be incorporated into a scanner head to measure the caliper of paper, plastic, and other flexible web products.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: January 3, 2012
    Assignee: Honeywell ASCa Inc
    Inventors: Tamer Mark Alev, Salvatore Chirico
  • Patent number: 8083895
    Abstract: An air stabilization system employing two parallel, opposite facing Coanda nozzles, that are positioned adjacent a flexible moving web, with each nozzle exhausting gas at opposite directions, subjects the moving web to opposing forces effective to stabilize the web. Each nozzle includes an elongated slot that is parallel to the path of the moving web. The two Coanda nozzles serve as separate points along the machine direction for controlling the height of the moving web. By modulating the flow, pressure and other parameters of gases exiting the Coanda nozzles, the shape of the moving web between the nozzles can be manipulated to present a planar contour for measurements. The air stabilization system can be incorporated into a scanner head to measure the caliper of paper, plastic, and other flexible web products.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: December 27, 2011
    Assignee: Honeywell ASCa Inc.
    Inventors: Tamer Mark Alev, Glen John Visser, Salvatore Chirico, Ron Beselt, Michael Kon Yew Hughes
  • Patent number: 8083896
    Abstract: An air stabilization system employing two parallel, opposite-facing Coanda nozzles, with each nozzle exhausting gas at opposite directions, subjects a moving flexible web to opposing forces effective to create local tension within the web. Each nozzle includes an elongated slot that is perpendicular to the path of the moving web. The nozzles serve as separate points along the machine direction for controlling the height of the web. The operative surface with the nozzles can exhibit a flush surface. The nozzles can be formed on elevated structures on the operative surface. The operative surface can be covered with a transparent substrate to minimize shape distortions on the moving web and to prevent debris from collecting around the sensor. An internal baffle is employed to channel air flow within each nozzle. The baffle equalizes the gas pressure across the nozzle and directs air flow towards it.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: December 27, 2011
    Assignee: Honeywell ASCa Inc.
    Inventor: Michael Kon Yew Hughes
  • Patent number: 7976683
    Abstract: A machine for producing a fibrous web, in particular a paper web, paperboard web or tissue web, includes a former on which the fibrous web is formed on a structured belt and is dewatered between said structured belt and a forming belt, and a drying apparatus for the further dewatering of the fibrous web, through which the fibrous web is guided together with the structured belt and in which hot air flows through the permeable structured belt and the fibrous web. The forming fabric is formed by a printed forming fabric or a DSP fabric with zonally different permeability.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: July 12, 2011
    Assignee: Voith Patent GmbH
    Inventor: Thomas Scherb
  • Publication number: 20110162230
    Abstract: A paper or board machine having a machine dryer section with a drying group with single-wire draw. A drying wire (F) presses the web (W) on a drying cylinder (10) against heated cylinder surfaces, and the web (W) remains at the side of the outside curve of reversing cylinders (11) situated between drying cylinders (10). For enhancing runnability of the web (W), a runnability component (20) is in a pocket space (T) confined by two adjacent drying cylinders (10) and a reversing cylinder (11) situated between them and by the drying wire (F). The web (W) passes from the drying cylinder (10) to the reversing cylinder (11) as a short transfer of 80-400 mm, where a negative pressure effect produced by the runnability component (20) is applied and confined by seals of the runnability component (20) against the surfaces of the drying cylinder (10) and reversing cylinder (11).
    Type: Application
    Filed: February 4, 2011
    Publication date: July 7, 2011
    Applicant: METSO PAPER, INC.
    Inventors: Kari Juppi, Antti Komulainen
  • Patent number: 7905989
    Abstract: An apparatus for producing a fibrous web includes: a circulating permeable structured belt defining a sheet forming zone in which the fibrous web is formed; a circulating unstructured permeable supporting belt; a pressing section through which the fibrous web is led lying between the circulating permeable structured belt and the circulating unstructured permeable supporting belt; a Yankee cylinder having a surface and defining a press nip and a press nip region, wherein the fibrous web is led together with the structured belt through said press nip, the fibrous web in the region of the press nip being transferred from the structured belt to the surface of the Yankee cylinder; at least one doctor which doctors off the surface of the Yankee cylinder continuously; and a coating device which recoats the surface of the Yankee cylinder so that a renewed coating material is always present in the press nip.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: March 15, 2011
    Assignee: Voith Patent GmbH
    Inventors: Thomas Scherb, Luiz Carlos Silva, Danilo Oyakawa, Rogerio Berardi
  • Patent number: 7892399
    Abstract: An air stabilization system employing two parallel, opposite-facing Coanda nozzles, with each nozzle exhausting gas at opposite directions, subjects a moving flexible web to opposing forces effective to create local tension within the web. Each nozzle includes an elongated slot that is perpendicular to the path of the moving web. The nozzles serve as separate points along the machine direction for controlling the height of the web. The operative surface with the nozzles can exhibit a flush surface. The nozzles can be formed on elevated structures on the operative surface. The operative surface can be covered with a transparent substrate to minimize shape distortions on the moving web and to prevent debris from collecting around the sensor. By modulating the velocities of gases exiting the nozzles, the shape of the web can be manipulated to present a planar contour. The air stabilization system can be incorporated into a caliper scanner.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: February 22, 2011
    Assignee: Honeywell ASCa Inc.
    Inventors: Duck Graham, Tamer Alev, Michael Hughes, Ron Beselt, Glen Visser, Daniel Gordon, Salvatore Chirico
  • Patent number: 7846297
    Abstract: A hood (10) is located above a web forming section (12), a press section (14) and/or a dryer section and includes a ceiling (30), a back side wall, and a front side wall (44), which includes staggered wall segments (42). The wall segments (42) are adapted to move along rails or similar. The front side wall segments (42) are adapted to form two or more groups (46). A cleaning station (40) is arranged to automatically clean the side wall segments (42) as they move past the cleaning station.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: December 7, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Jyrki Buller, Samppa J. Salminen, Jussi Salojärvi, Jyrki Savela, Risto Väätänen
  • Patent number: 7758727
    Abstract: A process for producing tissue webs is disclosed. The process includes the step of partially dewatering a tissue web and then subjecting the web to multiple deflections against fabrics prior to drying the tissue web. For instance, in one embodiment, the tissue web is deflected multiple times in between two opposing fabrics. The tissue web can be deflected against the fabrics under sufficient pressure to cause the tissue web to mold against the fabrics. By deflecting the tissue web multiple times, rearrangement of the papermaking fibers contained in the tissue web occurs increasing the bulk of the web.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: July 20, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Paul Beuther, Frank Druecke, Jeffrey Holz
  • Publication number: 20100126033
    Abstract: A dryer uses conduits to carry a heating medium, such as steam, to heat the outer surface of the dryer. The volume of steam is successfully reduced to non-explosive levels and the shell need not be designed to prevent an explosion. Conduits may be formed through the shell itself or grooves may be formed on the inner surface of the shell, with the conduits retained within the grooves. Also, the conduits can be placed against the inside surface of the dryer and a material, such as zinc, can be filled in about the conduits. The material serves to both retain the conduits in place and thermally couple the conduits to the dryer to assure efficient heat transfer between the conduits and dryer. These modifications relieve the dryer from the Unfired Pressure Vessel classification to the classification of a piping assembly under ASA code regulations. This results in savings in operation safety, installation cost and operating costs due to the absence of costly inspections.
    Type: Application
    Filed: November 9, 2009
    Publication date: May 27, 2010
    Inventors: Osvaldo Ricardo Haurie, Richard Kenneth Haurie
  • Patent number: 7686923
    Abstract: A paper machine dewatering system includes a first fabric, a second fabric, and an airflow device. The first fabric carries a fibrous web on a side thereof. The second fabric is in at least partial contact with the fibrous web, the fibrous web being between the first fabric and the second fabric. The airflow device moves air successively through the first fabric, the fibrous web, and the second fabric.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: March 30, 2010
    Assignee: Voith Patent GmbH
    Inventors: Thomas Thoröe Scherb, Jeffrey Herman, Luiz Carlos Silva
  • Patent number: 7666276
    Abstract: A paper machine includes a dryer and a reel; at least one blow box located between the dryer and the reel; and a blower supplying a source of dry air to the at least one blow box.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: February 23, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Michael A. Hermans, Kenneth J. Zwick, Peter J. Allen
  • Patent number: 7662262
    Abstract: There is described a method and apparatus for applying steam from a steam source to a moving web to thereby improve the smoothness and gloss of the web. A housing has at least one cooling chamber upstream and at least one steam chamber downstream. The cooling air in the cooling chamber is used to cool the web before steam is applied to the web from the steam chamber. This allows a sufficient volume of steam to be delivered to the web to thereby raise its moisture content to a desired level to thus achieve optimized calendering of the web.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: February 16, 2010
    Assignee: ABB Ltd.
    Inventor: Robert G. Hamel
  • Patent number: 7582187
    Abstract: A process for producing a fibrous web, in particular a tissue web, includes the following steps: in a pressing zone, the fibrous web is pressed lying between the structured belt and a circulating, unstructured permeable supporting belt; the fibrous web and the structured belt are fed to a press nip provided on a Yankee cylinder; the fibrous web is transferred from the structured belt to the surface of the Yankee cylinder in the region of the press nip; and the surface of the Yankee cylinder is doctored off continuously and then recoated again, so that a renewed coating is always present in the press nip.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: September 1, 2009
    Assignee: Voith Patent GmbH
    Inventors: Thomas Scherb, Luiz Carlos Silva, Davilo Oyakawa, Rogerio Berardi
  • Patent number: 7536806
    Abstract: An arrangement and method for improving runnability, and dryer section length, by using a vertical impingement dryer before a first dryer cylinder of a group of dryer cylinders. After a pressing section, the web is dried with a pre-impingement dryer, closely followed by a vertical impingement dryer, which is closely following by the first dryer cylinder. The pre-impingement dryer and vertical impingement dryer of the first dryer cylinder to have a drying temperature of approximately 80° C. with no undesirable sticking to the dryer cylinder. The pre-impingement dryer can be arranged to dry a first side of the web, and a vertical impingement dryer after the first dryer cylinder is arranged to dry a second side of the web. The impingement drying takes place directly against the web without an intervening fabric.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: May 26, 2009
    Assignee: Metso Paper, Inc.
    Inventors: Kari Juppi, Antti Komulainen, Markku Lummila, Michael Odell, Martti Salminen, Riikka Antikainen, Petter Honkalampi
  • Publication number: 20090100700
    Abstract: A rotary valve for interposition between and fluid communication of a rotary joint and a rotating cylinder, comprising a valve body having a passageway therethrough which terminates at a first end of the valve body connectable to a rotary joint and at a second end of the valve body connectable to a rotating cylinder, and a valve disposed within the passageway. The valve is movable between a first, opened position, wherein a fluid is communicable through the passageway, and a second, closed position, wherein a fluid is not communicable through the passageway.
    Type: Application
    Filed: October 23, 2007
    Publication date: April 23, 2009
    Inventors: Marinus Alphonsus Sauerbreij, Paul Bernhard Van der Linden
  • Patent number: 7513975
    Abstract: A method and system for controlling one or more properties of a sheet of material to be manufactured on a sheet-making machine is disclosed. Actuators to control the sheet properties are arrayed in the cross-direction of the machine. Properties data about one or more properties of the sheet of material are measured and both the magnitude of an actuator control action and the cross-direction shape of an actuator control action are controlled to minimize the variation of the measured properties data from a desired target for each of the one or more properties.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: April 7, 2009
    Assignee: Honeywell International Inc.
    Inventor: Gary K. Burma
  • Patent number: 7473335
    Abstract: A machine for producing and/or treating a material web, in particular of paper or board, in which the material web can be guided along a material web guide path by means of at least one material web guide device from a material web production section or material web input section, in order to pass at least one material web treatment device, having an apparatus for forming a transfer strip of the material web and transferring the transfer strip through the machine, it being possible for the material web to be transferred along the material web guide path in that, by means of the apparatus for forming and transferring the transfer strip, a leading transfer strip of the material web is formed and guided through the machine, and the width of the transfer strip is increased to the full material web width (what is known as “tail widening”), and having an apparatus for detecting a break in the material web.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: January 6, 2009
    Assignee: Voith Paper Patent GmbH
    Inventors: Tobias Wanke, Uwe Joos
  • Patent number: 7459061
    Abstract: Employment of one or more resealable access slots in a steam distributor apparatus affords easy access to the internal chambers of the apparatus for cleaning and maintenance. The access slots can be located on the lower walls of the steam discharge chambers where debris tend to aggregate during operation of the apparatus. The apparatus can have multiple discharge chambers that are separated by spaced-apart partitions or baffle panels. Steam that is supplied from a steam header to each chamber exits each chamber through perforations of a discharge screen plate that is permanently secured onto adjacent partition panels. Actuators can regulate the steam flow from the steam header to the individual discharge chambers thereby creating a steam curtain with uniform or non-uniform cross direction profiles as desired.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: December 2, 2008
    Assignee: Honeywell International Inc.
    Inventor: Eric O. Passiniemi
  • Patent number: 7459060
    Abstract: A reverse bump test, for identifying the alignment of a sheetmaking system while the system remains in closed-loop control, includes the following steps: (a) leaving the control system in closed-loop, (b) artificially inserting a step signal on top of the measurement (or setpoint) profile from the scanner, (c) recording the data as the control system moves the actuators to remove the perceived disturbance (or setpoint change), and (d) refining or developing a model from the artificial measurement disturbance (or setpoint change) to the actuator profile. The technique supplies the probing/perturbation signal to the scanner measurement, which is equivalent to supplying the probing/perturbation signal to the setpoint target) rather than inserting bumps via the actuator set points as has been practiced traditionally.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: December 2, 2008
    Assignee: Honeywell ASCA Inc.
    Inventor: Gregory E. Stewart
  • Patent number: 7442279
    Abstract: A method of making paper comprising over drying the paper web by a dryer; transporting the paper web to a reel; and supplying dry air adjacent at least a portion of the paper web's travel path from the dryer to the reel. A paper machine comprising a dryer and a reel; at least one blow box located between the dryer and the reel; and a blower supplying a source of dry air to the at least one blow box.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: October 28, 2008
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Michael A. Hermans, Kenneth J. Zwick, Peter J. Allen
  • Patent number: 7435315
    Abstract: The object of the invention is an arrangement for stabilizing a paper web (3) in a paper machine, which arrangement comprises at least three cylinders (4, 5, 6) which have been arranged so that a pocket space is formed between them, a blow box (7) arranged in the pocket space, which blow box has a blow nozzle (12), in which a nozzle slot (19) has been arranged, a separate wall (10), substantially in the direction of the blow box (7), which wall has a first edge and a second edge that are substantially parallel, which has been attached from its first edge to the blow box (7), whose height in the travelling direction of the paper web (3) is 25-300% of the height of the blow box (7) in the travelling direction of the paper web (3), in the second edge of which wall there has been arranged a boundary layer air doctor (15), which extends substantially unto the surface of the cylinder (4, 5, 6), and which wall (10) has been attached to the blow box (7) so that the blow box (7) and the wall (10) form a space in the a
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: October 14, 2008
    Assignee: Metso Paper, Inc.
    Inventor: Nenad Milosavljevic
  • Publication number: 20080155851
    Abstract: A vapor hood for a paper machine and/or paperboard machine, in particular for the drying section of a paper machine and/or paperboard machine, having a hood housing, wherein an inner housing surface of the hood housing delimits an internal space in which a process area, in particular the drying section, of the paper machine and/or paperboard machine is arranged or can be arranged, wherein on the inner housing surface in at least a sub-region there is arranged at least one condensation sensor for detecting a formation of condensate or an imminent formation of condensate in said sub-region.
    Type: Application
    Filed: December 21, 2007
    Publication date: July 3, 2008
    Inventors: Ralf Niebe, Jurgen Horter, Ronald Hepper
  • Patent number: 7294235
    Abstract: There is described a method and apparatus for applying steam from a steam source to a moving web to thereby improve the smoothness and gloss of the web. A housing has at least one cooling chamber upstream and at least one steam chamber downstream. The cooling air in the cooling chamber is used to cool the web before steam is applied to the web from the steam chamber. This allows a sufficient volume of steam to be delivered to the web to thereby raise its moisture content to a desired level to thus achieve optimized calendering of the web.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: November 13, 2007
    Assignee: ABB Ltd.
    Inventor: Robert G. Hamel
  • Patent number: 7192507
    Abstract: Machine for producing a fibrous material web and process for guiding the web through the machine. The machine includes a wire section, a drying section, arranged downstream of the wire section with regard to a web travel direction, having at least one free web draw, a first and second shoe press separated in the web travel direction, and an upper felt and a lower transfer belt arranged to guide the fibrous material web through the second shoe press. The lower transfer belt is structured and arranged to transfer the fibrous material web to the drying section, and the material web is guided in a closed draw from the wire section to a first free web draw, with regard to the web travel direction, in the drying section. At least one high-performance drying device is positioned before the first free web draw.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: March 20, 2007
    Assignee: Voith Paper Patent GmbH
    Inventor: Ulrich Begemann
  • Patent number: 7112258
    Abstract: A dry end section for a paper-making machine for producing a high-bulk tissue is provided. Such a machine comprises a through-air dryer adapted to finally dry a paper web and a through-air drying fabric configured to transport the web through the through-air dryer. A separating device is included for facilitating separation of the web from the through-air drying fabric. A reel is also provided and is configured to receive the web thereon. The web is received directly on the separating device or on a fabric wrapped about the separating device. In some instances, the web may be compressed between the separating device and an adjacent roll or by a web-compressing device disposed along the fabric transporting the web. The web is then transported to the reel directly from the fabric or other support mechanism extending between the separating device and the reel, without free draw of the web. Associated methods are also provided.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: September 26, 2006
    Assignee: Metso Paper Karlstad Aktiebolag (AB)
    Inventors: Ingvar Berndt Erik Klerelid, Lars-Erik Roland Önnerlöv, Leif Sören Videgren
  • Patent number: 7060163
    Abstract: The invention relates to a device for continuous drying of a pulp sheet 10, particularly a tissue web, with a drying drum 1 and an air circulating system. It is mainly characterised by the drying drum 1 having a shell 12 with a perforated cylinder 20 that is externally supported by radial bearing rings 21.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: June 13, 2006
    Assignee: Andritz AG
    Inventors: Franz Haider, Gerald Schadler, Wilhelm Mausser
  • Patent number: 7040038
    Abstract: An air processing cylinder useful in drying, curing, thermal bonding, cooling, and web transferring materials such as fabrics, papers, and the like. Air is exhausted out of the cylinder surface through a plurality of conduits equipped with distribution means for profiling the flow of air. The drying cylinder further includes a duct network on its outer shell for exhausting air out of one axial area only or, alternatively, the drying cylinder may contain multiple duct networks for exhausting air out of several axial areas, each having its own flow characteristics.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: May 9, 2006
    Assignee: Metso Paper USA, Inc.
    Inventor: Donald F. Beaumont
  • Patent number: 7017279
    Abstract: A method of blowing drying gas against a paper web, and an impingement dryer of a paper machine. Drying gas is blown with an impingement dryer comprising several profiling chambers in the cross-direction of a paper machine, the cross-profile of the paper web being controlled with the drying gas blown from the profiling chambers. Each profiling chamber blows drying gas to its own effect range. The impingement dryer further comprises a return air chamber and return air ducts such that drying gas blown against the paper web from the profiling chambers is returned into the return air chamber through the return air ducts in such a way that some of the effect of the drying gas blown from the profiling chamber is at least partly prevented from reaching the effective area of the adjacent profiling chamber.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: March 28, 2006
    Assignee: Metso Automation OY
    Inventors: Jari Almi, Jarkko Veijola, Jarkko Nurmi, Antti Komulainen, Kari Juppi
  • Patent number: 6998021
    Abstract: In a paper machine which comprises process elements and a measuring beam, the measuring beam is arranged at least at one paper machine process element so that a measuring device for measuring quality properties of a paper web is arrangeable in the measuring beam. The paper machine process element is e.g. a blow box, which is arrangeable in a dryer unit of the paper machine between drying cylinders to blow air via at least one blow air channel provided in the blow box to guide the moving paper web and/or to assist drying.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: February 14, 2006
    Assignee: Metso Automation Oy
    Inventors: Markku Mäntylä, Matti Kukkurainen, Jari Koivu
  • Patent number: 6998018
    Abstract: A creped tissue paper is made by creping a tissue paper from a drying cylinder with a creping doctor, receiving the creped web on a carrying fabric, carrying the creped web on the carrying fabric through a compression nip that compresses the web to substantially reduce its thickness and improve softness of the web, and carrying the creped, compressed web on the carrying fabric or a subsequent fabric to a reel-up.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: February 14, 2006
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Johan Ulf Rågård
  • Patent number: 6977028
    Abstract: A method of drying a paper web is provided. The method utilizes a dryer, such as a through-dryer, having a first dryer section and a second dryer section. Within the first dryer section, a relatively wet paper web is dried at an elevated temperature, such as between about 400° F. to about 500° F. After being dried by the first dryer section, the web is relatively dry and is further dried by the second dryer section at a reduced temperature, such as between about 300° F. to about 400° F. A variety of control techniques can also be utilized to control the temperature of each dryer section.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: December 20, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Russell F. Ross, Jark C. Lau
  • Patent number: RE39601
    Abstract: To accomplish a web transfer, which in reliability is comparable to the one obtained with a closed draw, in any operating environment, but especially where it is desirable to transfer a fast running tissue web (4) from the drying section of a tissue machine, e.g., a Yankee dryer (2), to a reel-up (3), a web support device (10) extends across the width of the web (4) and along a predetermined run of the web support device has a support surface (11) formed by a series of plate member assemblies (23) having means for creating a flow of air in the direction of the web run. Between the web (4) and the support surface (11) the flow of air forms an air layer (15) of reduced static pressure, so as to stabilize the web (4) against flutter. The predetermined run may extend through a calender (7) and past scanner equipment (8). Pneumatic tail threading capabilities may be included.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: May 1, 2007
    Assignee: Metso Paper Karlstad AB
    Inventors: Tord O. S. Svanqvist, B. Lennart H. Örtemo