Control scheme for rapid pulp delignification and bleaching
To avoid confusion, the detailed description of this invention will be with reference to ozone gas even though other gaseous bleaching reagents, such as chlorine monoxide, chlorine dioxide, and others... Read More
Inventors: Pangalos, George; Falcone, Jr., Ronald A.; Mayo, William L.; Bosch, Gregory J.;, Assignee: Union Camp Patent Holding, Inc. (Wayne, NJ) |
Paper sizing composition and method
OF THE INVENTION The present invention is predicated on the discovery that a satisfactory reaction between long chain alkyl or substituted alkyl epoxides and cellulose fibers can be achieved under ce... Read More
Inventors: Cash, Gordon G.;, Assignee: Olin Corporation (Pisgah Forest, NC) |
Compact press at the web transfer position of a paper making machine
Hence, it is a primary object of the present invention to provide a new and improved construction of roll press which is not associated with the aforementioned drawbacks and limitations of the prior a... Read More
Inventors: Stotz, Wolf-Gunter; Hund, Helmut;, Assignee: Escher Wyss Limited (Zurich, CH) |
Paper manufacturing structure particularly for detaching a web from a wire
What is claimed is: 1. A method for operating a paper manufacturing machine wherein a web is detached from a forming wire loop and conducted to a press section of the machine by a transfer felt, compr... Read More
Inventors: Kankaanpaa, Matti;, Assignee: Valmet Oy (FI) |
Transfer apparatus from press section to drying section
The present invention relates to a transfer apparatus and method for transferring a web from a press section to a first dryer of a dryer section. The apparatus includes a lead-in roll which is dispose... Read More
Inventors: Wedel, Gregory L.;, Assignee: Beloit Corporation (Beoit, WI) |
Web pick-up device and method for transfer of a paper web
This problem is solved by the features of the present invention. The present invention, in one form thereof, comprises a web pick-up device in a press section of a machine for making fibrous webs, whe... Read More
Inventors: Kraft, Wilfried;, Assignee: J. M. Voith GmbH (Heidenheim, DE) |
Fibrous product for binding particles
The foregoing and other objects are achieved by providing fibers in a wet laid sheet manufacturing line, such as cellulose fibers with or without synthetic or other fibers being wet laid into a web or... Read More
Inventors: Hansen, Michael R.; Young, Sr., Richard H.;, Assignee: Weyerhaeuser Company (Tacoma, WA) |
Rotary through dryer having multiple vacuum chambers and associated heaters
We claim: 1. A sheet drying apparatus comprising: a movable endless foraminous conveyor for carrying fibrous sheet material to be dried; forming means for forming said sheet material on said conveyor ... Read More
Inventors: Helversen, Frederick D.; Rivers, Morris R.;, Assignee: Helversen; Frederick D. (Portland, OR) |
High velocity web floating air bar having air flow straightening means for air discharge slot means
The present invention provides an elongated and generally tubular air bar which is adapted to be positioned closely adjacent to a running web for supporting the web on a cushion of pressurized air. Th... Read More
Inventors: Daane, Robert A.;, Assignee: W. R. Grace & Co. (New York, NY) |
Method for continuous drying of a cloth and an apparatus therefor
The present invention is done in view of such circumstances. The object of the invention is to develop a method of continuously drying a cloth under no tension (shrink drying) to obtain an excellent t... Read More
Inventors: Sando, Yoshikazu; Ishidoshiro, Hiroshi;, Assignee: Sando Iron Works (Wakayama, JP) |
System for drying wet, porous webs
We claim: 1. In a system for drying a wet, porous web with hot gases by flowing gas through the porous web: a stationary drum; a coaxial rotatable cylinder of larger diameter than the stationary drum ... Read More
Inventors: Dussourd, Jules L.; Luthi, Oscar;, Assignee: Ingersoll-Rand Company (Woodcliff Lake, NJ) |
Papermakers fabric of nonwoven layers in a laminated construction
The present invention relates to a papermakers fabric which generally comprises a plurality of impervious nonwoven sheets joined together in a laminated arrangement to define the fabric. Defined throu... Read More
Inventors: Albert, Hans;, Assignee: Scapa Inc. (Waycross, GA) |
Arrangement for sealing a chamber containing pressure medium
We claim: 1. An arrangement for sealing a chamber containing pressure medium against a movable band arranged to form one side of the chamber, comprising a sealing framework fastened to a body part of ... Read More
Inventors: Rautakorpi, Paavo; Majaniemi, Pekka; Lehtinen, Jukka;, Assignee: Oy Tampella AB (Tampere, FI) |
Fixation device
OF THE DRAWINGS FIG. 1 discloses the principal structure of a fixation device according to the invention, comprising an upper structure 9 and a lower structure 10 extending across the total width of ... Read More
Inventors: Gunderson, Harald;, Assignee: Alfsen & Gunderson A/S (Oslo, NO) |
Method for resisting formation of undulations in a fiber/water mixture during forming of a paper web in a paper-making machine
The object of the present invention is to provide a novel method and arrangement with which the above-described detrimental undulation phenomena of a fiber/ water mixture occurring on a forming wire c... Read More
Inventors: Malkki, Raimo; Jaatinen, Paavo; Haverinen, Timo; Eskelinen, Pekka; Jokinen, Juhani; Vuorinen, Vesa; Virta, Raimo; Salmivaara, Martti;, Assignee: Valmet Oy (both of, FI); Kymmene Oy (both of, FI) |
Method of and device for pocket ventilation in the drying section of a paper machine, in particular for high-speed paper machines
What is claimed is: 1. Method of operating multi-cylinder dryers of a paper machine, where said dryers comprise two lines of drying cylinders (10, 11), in whose connection a twin-wire draw is applied ... Read More
Inventors: Eskelinen, Pekka; Raatikainen, Pentti; Karlsson, Markku; Virta, Raimo;, Assignee: Valmet Paper Machinery Inc. (FI) |
Extended nip-press
The object of the present invention is to avoid the drawbacks that have previously been mentioned and to provide an extended-nip press construction wherein a closed construction is combined with a goo... Read More
Inventors: Laapotti, Jorma;, Assignee: Valmet Paper Machinery Inc. (FI) |
Rotatable slot nozzle air bar
The general purpose of the present invention is an air bar with a directionally rotatable slot nozzle in an inner rotatable baffle assembly. The rotatable baffle assembly and nozzle slot provide for a... Read More
Inventors: Zagar, Steve J.;, Assignee: W. R. Grace & Co.-Conn. (New York, NY) |
Web dryer apparatus having ventilating and impingement air bar assemblies
The present air bar finds particular utility for those situations where the coatings are quite fluid and easily disturbed by direct air impingement. Generally the solvents used evaporate so easily tha... Read More
Inventors: Hella, Terry A.; Buchanan, Carl L.;, Assignee: Advance Systems, Inc. (Green Bay, WI) |
Water soluble polyols in combination with glyoxlated acrylamide/diallyldimethyl ammonium chloride polymers as Yankee dryer adhesive compositions
I claim: 1. A creping adhesive composition for creping cellulosic webs comprising: a) from 5 to 95 weight per-cent of a water soluble acrylamide polymer having sufficient glyoxal-reacted amide substit... Read More
Inventors: Furman, Jr., Gary S.;, Assignee: Nalco Chemical Company (Naperville, IL) |
Method for making a strong, bulky, absorbent paper sheet using restrained can drying
. It is an object of the present invention to provide a process for making a low density paper base web for towels and tissues without creping. It is a further object of the present invention to provi... Read More
Inventors: Scattolino, Thomas F.; Stern, Howard J.; Trumball, John G.; Wolkowicz, Richard I.;, Assignee: Scott Paper Company (Philadelphia, PA) |
Arrangement in a dryer for a fibre web
We claim: PG,11 1. An arrangement in a dryer for a fibre web, the arrangement comprising: two bodies (1a, 3a) for defining lower and upper chambers (1, 3) respectively for containing a pressurized med... Read More
Inventors: Rautakorpi, Paavo; Ilomaki, Jari; Lehtinen, Jukka;, Assignee: Valmet-Tampella Oy (Tampere, FI) |
Papermachine clothing
We claim: 1. Papermachine clothing consisting essentially of partially fused particles, and a reinforcing structure embedded wholly within the papermachine clothing. 2. Papermachine clothing as claime... Read More
Inventors: Allum, Andrew; Sayers, Ian C.; Saunders, Thomas;, Assignee: Scapa Group PLC (Lancashire, GB) |
Capillary dewatering method and apparatus
It is therefore an object of the present invention to provide a method and apparatus for removing a portion of the liquid contained in a continuous wet porous web in a papermaking process without subs... Read More
Inventors: Chuang, Strong C.; Kaufman, Kenneth; Schiesser, Robert H.;, Assignee: Kimberly-Clark Tissue Company (Neenah, WI) |
Extended nip prepress for a paper web
It is an object of the invention to provide a new and improved prepress arrangement in which the problem of leakage of an operating fluid contaminating the lubricating medium is eliminated. It is anot... Read More
Inventors: Holopainen, Kari;, Assignee: Valmet Corporation (Helsinki, FI) |
Chip spreader for air-lock feeder
The manufacture of cellulose paper products typically begins with the wood chip. Though cellulose pulps from which paper is made can be manufactured from a variety of cellulose materials, including gr... Read More
Inventors: Prough, J. Robert;, Assignee: Andritz-Ahlstrom Inc. (Glens Falls, NY) |
Cleaning apparatus for cleaning a forming wire
The present invention relates to a cleaning apparatus for cleaning a forming wire of a paper machine. The apparatus includes a shower which is disposed adjacent to the forming wire for applying a show... Read More
Inventors: Gregersen, Matthew L.; Newton, Paul P.; Oldenburg, David E.; Pulkowski, Jeffrey H.; Shands, Jay;, Assignee: Beloit Technologies, Inc. (Wilmington, DE) |
Beam structure in a pulp machine/paper machine/board machine or in a paper/board finishing device
OF THE INVENTION Referring to FIGS. 1-2 wherein like reference numerals refer to the same or similar elements, the doctor beam in accordance with the invention will be described. FIG. 1A, is an axono... Read More
Inventors: Holopainen, Kari; Rata, Ilkka; Samppala, Jukka; Isometsa, Juha; Toivanen, Heikki;, Assignee: Valmet Corporation (Helsinki, FI) |
Arrangement for the transfer of a traveling web
It is an object of the present invention to improve the arrangement described above so that it operates dependably without suction means even at the high operating speeds mentioned, while the web is d... Read More
Inventors: Mayer, Wolfgang;, Assignee: J.M. Voith GmbH (DE) |
Method of enhancing strength of paper products and the resulting products
The present invention describes a method by which PAE resins and other types of papermaking additives normally used for imparting wet strength may be used for increasing dry strength and other propert... Read More
Inventors: Park, David W.; Hunter, Frank R.;, Assignee: Weyerhaeuser Company (Tacoma, WA) |
Manufacturing Materials 
