Fiber Supplied Constituent Patents (Class 162/163)
  • Patent number: 10487427
    Abstract: There is provided a system and method for manufacturing continuous strand fiberglass of progressive density with varying skins. Glass media is melted into molten glass within a temperature controlled melter, the molten glass exits the melter through orifices of a bushing plate, which is oriented 6 degrees relative to the axis of a rotating drum. A rotating drum receives the molten glass exiting the bushing plate, and resin and water are applied. The fiberglass media is fed through rollers before it enters a curing oven.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: November 26, 2019
    Assignee: Superior Fibers, LLC
    Inventors: Charles Douglas Spitler, Rodney Ray Wilkins
  • Patent number: 10253214
    Abstract: The current method relates to compositions and methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems. The current method also relates to controlling the deposition of organic contaminants on equipment in the pulp and papermaking systems, which can cause both quality and efficiency problems. In particular the method relates to the use of non-sulfonated or slightly sulfonated lignin dispersions and solutions for inhibiting deposition of contaminants in pulp and paper making system.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: April 9, 2019
    Assignee: SOLENIS TECHNOLOGIES, L.P.
    Inventors: Tien-Feng Ling, Zhaoqing Liu, Kyle J Bottorff
  • Patent number: 9774038
    Abstract: A binder resin for a nonaqueous secondary battery electrode of the invention satisfies Is?30 (Is indicates a sum of scattering intensities observed in a particle size range of from 1 to 100 nm) when a solution is formed by dissolving the binder resin in water at a concentration of 5% by mass and particle size distribution is measured by a dynamic light scattering method at 25° C. The binder resin contains a polymer (B) having a structural unit represented by the following Formula (11) and a specific structural unit. The binder resin also contains a polymer (?) having a specific structural unit and a structural unit represented by the following Formula (22), and/or a mixture of a polymer (?1) having a specific structural unit and a polymer (?2) having a structural unit represented by the following Formula (22).
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 26, 2017
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Haruki Okada, Mitsufumi Nodono, Hikaru Momose, Fumino Momose, Fumiko Fujie, Akikazu Matsumoto, Daisuke Fujikawa, Ayako Shimonaka, Akihiro Ishii
  • Patent number: 9671367
    Abstract: The invention relates generally to polymers and copolymers comprising N-vinylamide-type monomers, their preparation, and compositions, such as electrophoresis separation media, containing the same; to supports, such as capillaries, containing these polymers; and methods for separating a mixture of biomolecules, especially polynucleotides, using capillary electrophoresis. Separation media comprising such polymers yield advantageous performance in the analysis and separation of biomolecules by capillary electrophoresis.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: June 6, 2017
    Assignee: Applied Biosystems, LLC
    Inventor: Aldrich N. K. Lau
  • Publication number: 20150101769
    Abstract: A method for preparing aqueous furnish to be used in paper or paper board manufacturing. Filler and/or fibers are treated with cationic polyelectrolyte and nanofibrillated cellulose. The strength of the paper and the retention of the fillers in paper can be improved. A furnish prepared by a method, and a paper or a paper board manufactured from the furnish.
    Type: Application
    Filed: December 17, 2014
    Publication date: April 16, 2015
    Inventors: Janne LAINE, Monika Österberg, Delphine Miquel, Leila Pohjola, Irmeli Sinisalo, Harri Kosonen
  • Publication number: 20150068657
    Abstract: The present invention provides composite materials comprising a population of cellulose fibers complexed with an activator, and an additive comprising synthetic fibers complexed with a tethering agent, wherein the tethering agent has an affinity for the activator, and wherein an interaction between the tethering agent and the activator attaches the synthetic fibers to the cellulose fibers to form the composite material. The present invention also provides methods of manufacture for such composite materials, and methods for their use, for example in forming gypsum board composites.
    Type: Application
    Filed: May 29, 2014
    Publication date: March 12, 2015
    Applicant: Soane Labs, LLC
    Inventors: Gangadhar Jogikalmath, David S. Soane
  • Patent number: 8958898
    Abstract: The invention embodies methods and apparatuses to monitor and control the characteristics of a creping process. The method involves measuring optical properties of various points along a creped paper sheet and converting those measurements into characteristic defining data. The invention allows for determining the magnitude and distribution of crepe structures and their frequency and distribution. This allows for the generation of information that is accurate and is much more reliable than the coarse guessing that is currently used in the industry. Feeding this information to papermaking process equipment can result in increases in both quality and efficiency in papermaking.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: February 17, 2015
    Assignee: Nalco Company
    Inventors: William A. Von Drasek, Sammy Lee Archer, Gary S. Furman, Jr.
  • Patent number: 8603298
    Abstract: A method of manufacturing coated paper which consistently performs a papermaking process, a coating process, and a flattening process and includes a coating facility formed of a combination of a roll coater coating facility and first and second coating facilities in which coating methods are different from that of the roll coater coating facility, and the roll coater coating facility is provided between the first and second coating facilities.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: December 10, 2013
    Assignee: Daio Paper Corporation
    Inventor: Akira Nomura
  • Patent number: 8059850
    Abstract: An exemplary condenser microphone includes a printed circuit board, a first via, a second via, and a number of through holes. The first and second vias are formed in the printed circuit board for the signal line and ground line respectively passing therethrough. The through holes are formed surrounding the first and second vias. Inner walls of the through holes are coated with a conductive material.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: November 15, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chao-Kai Chan
  • Patent number: 7922867
    Abstract: Process for the production of paper, board and cardboard having high dry strength by separate addition of a polymer comprising vinylamine units and of ligninsulfonic acid and/or a ligninsulfonate to a paper stock, draining of the paper stock and drying of the paper products.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: April 12, 2011
    Assignee: BASF SE
    Inventors: Norbert Schall, Ellen Krueger, Martin Ruebenacker
  • Publication number: 20080023162
    Abstract: The invention relates to a method for dissolving wood, straw and other natural lignocellulosic materials in an ionic liquid solvent under microwave irradiation and/or under pressure. The invention also relates to the resulting solution and to methods for separating cellulose and other organic compounds, such as lignin and extractives, from the solution.
    Type: Application
    Filed: August 13, 2004
    Publication date: January 31, 2008
    Applicant: KEMIRA OYJ
    Inventors: Vesa Myllymaki, Reijo Aksela
  • Patent number: 7285184
    Abstract: A cellulosic pulp, method of producing the pulp, and associated paper product produced therefrom produced by providing mercerized cellulosic fibers and depositing a hemicellulose coating upon the mercerized fibers. The hemicellulose is deposited upon the fibers by combining a hemicaustic solution with the mercerized fibers in the presence of an acidifying agent. When formed into a paper sheet, the invented fibers form a highly porous paper having improved strength and reduced dusting.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: October 23, 2007
    Assignee: Rayonier, Inc.
    Inventors: Jian Li, Steve F. Boller
  • Patent number: 7178140
    Abstract: Less data to transmit from a server to a virtual machine on a client is achieved by transmitting only those methods of classes that the executed application actually requires. This is accomplished by taking the classes of the targeted application and statically determining which methods of these classes, as well as of the library classes, can actually be used by the application. A method usage map of usable methods for each class is saved in a file. When the request to download is received from the client, the server consults this map and selectively transmits only those methods that are in it. This saves download time and memory space in the virtual machine and speeds up execution.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: February 13, 2007
    Assignee: Sun Microsystems, Inc.
    Inventor: Mikhail Dmitriev
  • Patent number: 6846384
    Abstract: A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibers, and optional fillers, an anionic or cationic sizing dispersion, and a sizing promoter comprising a cationic organic polymer having an aromatic group; and an anionic polymer having an aromatic group selected from step-growth polymers, polysaccharides and naturally occurring aromatic polymers, wherein the sizing dispersion and sizing promoter are added separately to the aqueous suspension.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: January 25, 2005
    Assignee: Akzo Nobel N.V.
    Inventors: Erik Lindgren, Sten Frölich, Michael Persson
  • Patent number: 6777103
    Abstract: A fiber cement composite material providing improved rot resistance and durability, the composite material incorporating biocide treated fibrous pulps to resist microorganism attacks. The biocide treated fibers have biocides attached to inner and outer surfaces of individualized fibers to protect the fibers from fungi, bacteria, mold and algae attacks. The biocides selected have strong affinity to cellulose and do not interfere with cement hydration reactions. This invention also discloses the formulation, the method of manufacturing and the final fiber cement products using the biocide treated fibers.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: August 17, 2004
    Assignee: James Hardie Research Pty Limited
    Inventors: Donald J. Merkley, Caidian Luo
  • Publication number: 20020104632
    Abstract: The present invention is generally directed to an opaque tissue product and a process for making the same. The tissue products of the present invention comprise thermally expandable microspheres which impart increased opacity to the tissues. The thermally expandable microspheres are added to a fiber furnish during the wet end of a manufacturing process for bath tissue, facial tissue, towels, or the like.
    Type: Application
    Filed: December 11, 2000
    Publication date: August 8, 2002
    Inventors: Graciela Jimenez, Alberto R. Negri
  • Patent number: 6309509
    Abstract: This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: October 30, 2001
    Assignee: Eastman Chemical Company
    Inventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood
  • Patent number: 6268414
    Abstract: Paper sizing compositions comprising (a) cellulose-reactive size, (b) dispersant system comprising primary anionic dispersant, and secondary dispersant selected from cationic and/or non-ionic dispersant, and (c) inorganic salt.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: July 31, 2001
    Assignee: Hercules Incorporated
    Inventor: Tingdong Lin
  • Patent number: 6228217
    Abstract: This invention is directed to a process for preparing an aqueous papermaking suspension containing a polyelectrolyte complex comprising providing an aqueous suspension of pulp fibers containing a water-soluble cationic polymer and a water-soluble anionic polymer that are reactable in the aqueous suspension to form the polyelectrolyte complex, and a multivalent cation having at least a +3 charge, and forming the polyelectrolyte complex. It also includes the process wherein the aqueous suspension of pulp fibers contains surface active carboxyl compounds and water-soluble anionic compounds. It further includes the process wherein the aqueous papermaking suspension is sheeted and dried to obtain paper of improved strength.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: May 8, 2001
    Assignee: Hercules Incorporated
    Inventors: Jay A. Dickerson, Harry J. Goldy, Douglas C. Smith, Ronald R. Staib
  • Patent number: 6228223
    Abstract: The present invention generally relates to an aqueous softening and antistatic agent composition comprising a quaternary ammounium compound and a biodegradable nonionic surfactant, which composition comprises a quaternary ammounium compound having the formula wherein R1 is a C6-C22 hydrocarbyl group; and X is halogen or SO42−, in a concentration of at least about 15% by weight. The surfactant is a linear alkoxylated fatty acid or a linear alkoxylated unsaturated alcohol. Furthermore a method for providing cellulosic materials with a reduced tendency to retain an electrostatic charge as well as providing said material with improved softness, wherein the cellulosic material is treated with said composition, and fluff obtainable from fluff pulp treated with the composition.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: May 8, 2001
    Assignee: Akzo Nobel NV
    Inventors: Ingemar Thebrin, Lisbeth Ankarbratt
  • Patent number: 6193841
    Abstract: This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: February 27, 2001
    Assignee: Eastman Chemical Company
    Inventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood
  • Patent number: 6048438
    Abstract: A method for increasing the separation of solids from an aqueous slurry containing such solids is disclosed. The separation process is particularly useful in the separation of the solid components of a papermill furnish from water in the manufacture of paper. The method comprises the steps of adding to a paper mill slurry from about 0.003 to about 1.0% by weight based on total solids in the slurry of a phenolic enhancer and a nonionic (meth)acrylamide homopolymer methacrylamide, or anionic or cationic flocculant is added to the slurry in an amount of from about 0.003 to about 0.5% by weight based on total solids in the slurry. Addition order is non-critical. The flocculation of solid components of the paper mill slurry is increased leading to improved retention of filler and fiber on the sheet and increased drainage of water from the cellulosic sheet produced. The method is also applicable to the treatment of waste waters, mineral tailings, oily waste waters, municipal and industrial wastes, and the like.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: April 11, 2000
    Assignee: Nalco Chemical Company
    Inventors: Scott W. Rosencrance, Przemyslaw Pruszynski, Shamel M. Shawki, Regina Jakubowski, Jeff F. Lin
  • Patent number: 5810972
    Abstract: A method for the manufacture of creped hygienic cellulose paper, in particular. A hemicellulose containing additive, in particular galactomannan, xylan or highly milled birch pulp, is added to the pulp either prior to the pulp being deposited on the wire of the paper machine, after the pulp is deposited on the wire of the paper machine, or both before and after the pulp is deposited on the wire. As a result of this measure, the strength of the paper web thus produced and its runnability properties are substantially improved, while the softness virtually remains unchanged. In addition, the energy requirements for drying the paper web are substantially reduced.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: September 22, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Horst Reinheimer, Frank Rehders
  • Patent number: 5789326
    Abstract: A binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: August 4, 1998
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 5783039
    Abstract: A wholly aromatic polyamide staple fiber fabric having excellent insulation and superior dimensional stability at a high temperature and/or a high humidity, includes 70 to 96 parts by weight of a staple fiber web made from a blend of 5 to 30% by weight of m-type wholly aromatic polyamide staple fibers and 70 to 95% by weight of p-type wholly aromatic polyamide staple fibers, and 4 to 30 parts by weight of an organic resin binder incorporated into the staple fiber web.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: July 21, 1998
    Assignee: Teijin Limited
    Inventor: Sadamitsu Murayama
  • Patent number: 5753078
    Abstract: A method for making a surface coated or impregnated paper or paperboard by applying an aqueous additive dispersion to the wet web between the press and drying sections of a conventional paper or paperboard making machine. The aqueous additive dispersion is pre-metered onto a transfer roll and is applied to the wet web at a pressure nip between the transfer roll and a back-up roll. High solids content dispersions can be applied at high web speeds without tearing the web. The use of a high solids content aqueous dispersion having a solids content substantially equal to the solids content of the wet web at the point of application permits the method to be performed without increasing the drying load and therefore at an unreduced speed.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: May 19, 1998
    Assignee: Cartons St-Laurent, Inc./St. Laurent Paperboard, Inc.
    Inventors: Serge Koutitonsky, Stephane Rousseau
  • Patent number: 5647956
    Abstract: A composition comprising aqueous cellulosic furnish, a high molecular weight cationic polymer, and a modified lignin wherein the ratio of the cationic polymer to the modified lignin is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: July 15, 1997
    Assignee: Calgon Corporation
    Inventors: David L. Elliott, Wood E. Hunter, Ronald J. Falcione
  • Patent number: 5589256
    Abstract: A method of producing easily densified high bulk fibers that have adhered particulates. The high bulk fibers have hydrogen bonding or coordinate covalent bonding functionalities, and a binder is applied to the fibers to bind the particles to the fibers. The binder has a functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and a functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: December 31, 1996
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 5578168
    Abstract: A method is provided for using an aqueous suspension of at least 15% of poly(ethylene oxide) (PEO) as a retention aid in the manufacturing of paper. PEO is dispersed in an aqueous solution of at least one salt selected from the group consisting of sodium or potassium formate, sodium or potassium hydroxide, sodium or potassium citrate, sodium or potassium acetate, sodium chloride or mixtures thereof to form a poly(ethylene oxide) suspension having at least 15% of poly(ethylene oxide) by total weigh. This suspension is dissolved in said dispersion in an aqueous system containing ferric ions or free chlorine; and said dissolved aqueous system is added to a pulp slurry for making paper just prior to forming the pulp into a wet web, whereby said aqueous suspension prevents the loss of fiber fines during the paper formation stage and resists viscosity loss due to ferric ions or free chlorine in the aqueous system.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 26, 1996
    Assignee: Hercules Incorporated
    Inventors: Charles L. Burdick, Elliott Echt
  • Patent number: 5575892
    Abstract: A composition for improving the wet strength of cellulosic fibrous webs is comprised of an aminopolyamide-epichlorohydrin acid salt resin having an E/N ratio of from about 0.6 to about 2.0 and from about 1% to about 35% of a water soluble cationic polymer based on the weight of the resin. The composition has a total organic chlorine content of from about 0.5% to 1.0% by weight based on the weight of the aminopclyamide-epichlorohydrin acid salt resin.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 19, 1996
    Assignee: Henkel Corporation
    Inventors: David I. Devore, Nancy Clungeon, Stephen A. Fischer
  • Patent number: 5567277
    Abstract: A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and an anionic polymer comprising a modified lignin wherein the ratio of the cationic polymer to the anionic polymer is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: October 22, 1996
    Assignee: Calgon Corporation
    Inventors: David L. Elliott, Wood E. Hunter, Ronald J. Falcione
  • Patent number: 5516405
    Abstract: First pass filler retention is obtained by adding a cationic fixative into a filler containing pulp slurry which is also treated using the conventional polyethylene oxide/promoter retention system and as a result a significant increase in the first pass retention of filler is attained.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: May 14, 1996
    Assignee: MacMillan Bloedel Limited
    Inventor: James A. De Witt
  • Patent number: 5503713
    Abstract: A process for making a cellulosic pulp fiber web having increased wet strength comprising the steps of: (1) adding to an aqueous cellulosic pulp fiber slurry a water soluble cationic polymer consisting of polydimethyldiallylammonium chloride to form a first treated slurry; (2) adding to the first treated slurry an aminopolyamide-epichlorohydrin acid salt resin solution having an E/N ratio of from about 0.6 to about 2.0 so that the weight percent of the cationic polymer is from about 1% to about 35% based on the weight of the resin, thus forming a second treated slurry; and (3) forming a cellulosic pulp fiber web by dewatering the second treated slurry.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: April 2, 1996
    Assignee: Henkel Corporation
    Inventors: David I. Devore, Nancy Clungeon, Stephen A. Fischer
  • Patent number: 5501772
    Abstract: A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and a modified lignin wherein the ratio of the cationic polymer to the modified lignin is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: March 26, 1996
    Assignee: Calgon Corporation
    Inventors: David L. Elliott, Ronald J. Falcione, Wood E. Hunter
  • Patent number: 5501773
    Abstract: A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and an anionic polymer comprising a modified lignin wherein the ratio of the cationic polymer to the anionic polymer is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 26, 1996
    Assignee: Calgon Corporation
    Inventors: David L. Elliott, Ronald J. Falcione, Wood E. Hunter
  • Patent number: 5348621
    Abstract: Composition board and various other synthetic or artificial panel and the like structures a well as manually-formable compositions of paste-like consistency for substitution as putty, caulking or molding clays, etc., all of which can be internally reinforced for better-strength structural purposes, are fabricated and made into desired strong and excellently-utile shaped article products of manufacture and the like under various forming conditions for the purpose from coarse paper starting material (viz, common "newsprint", kraft paper, cardboards, etc.) which starting material may optionally have "wet" sawdust and/or other undried cellulosic inclusions therein all of which, advantageously and economically, is converted by treatment thereof with certain non-azotizing, non-alklai, nascently-operative and -reacting strong oxidizing agents including such things as common household bleach (i.e.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: September 20, 1994
    Assignee: Coalition Technologies, Limited
    Inventor: Norbert J. Rudy, deceased
  • Patent number: 5338404
    Abstract: Preformed cellulosic linerboard as utilized in the manufacture of corrugated products is provided with enhanced crush strength by a combined lignin-coating and calendering treatment. The linerboard is coated with an aqueous lignin-containing solution and then, with the coating in a wet or dry state, subjected to at least one pass through a calender nip to substantially increase the CD crush strength of the treated linerboard over the CD crush strength of an untreated linerboard or a lignin treated but uncalendered linerboard. The linerboard may be laminated with a substantially air and moisture impervious sheet to inhibit bleeding of the lignin coating in high humidity conditions.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: August 16, 1994
    Assignee: International Paper Company
    Inventors: Paul C. Lucas, Ronald J. Messenger, Elizabeth Macklem-Nathan, Lawrence C. Nykwest
  • Patent number: 5237594
    Abstract: A nuclear apparatus for obtaining qualitative and quantitative information related to an element of earth formation surrounding a borehole, comprising: (1) a neutron source for irradiating the formation with neutrons of sufficient energy to activate atoms of at least a given element; (2) at least two (preferably four) detectors longitudinally spaced from said source, for detecting the gamma rays emitted during the activation reaction; (3) means for assigning a maximum number of counts for each detector and for establishing a relationship between these maximum number of counts and the corresponding instant of time counts for each detector; and (4) means for deriving from the relationship qualitative information related to the element.The relationship is approximately a straight line, the slope of which is representative of the element of interest. The amplitude of the counts is representative of the quantity of the activated element and of the radial distance between the activated atoms and the borehole.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: August 17, 1993
    Assignee: Schlumberger Technology Corporation
    Inventor: James F. Carroll
  • Patent number: 5135612
    Abstract: A method for making a shaped product comprising exploded bark. Preferably the shaped product comprises exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, based upon the dry weight basis of the bark. One of the methods to make the shaped product comprises exploding softwood bark to obtain exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, compressing that exploded bark into a shaped product, while removing in part water, and drying the shaped product to remove the remaining water.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: August 4, 1992
    Assignee: Domtar Inc.
    Inventors: Michel J. Desrochers, Michel Jean, Michel P. Drouin
  • Patent number: 5110414
    Abstract: A procedure for manufacturing lignocellulosic material products and for improving their strength and water resistance characteristics, high-molar mass lignin derivatives being added to the lignocellulosic material, of which at least 35% by weight are over 5000 in molar mass.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: May 5, 1992
    Assignee: Oy Keskuslaboratorio - Centrallaboratorium AB
    Inventors: Kaj G. Forss, Agneta G. M. Fuhrmann, Martti Toroi
  • Patent number: 5100511
    Abstract: A method for the manufacture of products containing fibers of lignocellulosic material which involves the disintegration of a lignocellulosic material into fibers and forming and pressing of the fiber web into the product in question, which is preferably in the form of fiberboard (board products). The material that forms the fibers is impregnated with lignin in conjunction with water and at a pH which does not substantially exceed 12.5. When the lignin has been absorbed by the material it is fixed against leaching by water through the modification of said lignin into an essentially water-insoluble form.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: March 31, 1992
    Inventors: Rune Simonson, Brita Ohlsson, Birgit stman
  • Patent number: 4964952
    Abstract: A method of controlling pitch in an aqueous system involved in paper making as described which comprises adding a cationically modified tannin to the system.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: October 23, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: John J. Bennison, Richard P. Clifford
  • Patent number: 4929498
    Abstract: Discolsed are wet wiper products that incorporate antimicrobially-active nonwoven fabrics, preferably comprising: bonded fibers; a binder distributed on said fibers; and an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is prevented from substantially diffusing from said fabric.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: May 29, 1990
    Assignee: James River Corporation of Virginia
    Inventors: Stuart P. Suskind, Joseph H. Miller
  • Patent number: 4772359
    Abstract: Paper, board and cardboard are produced by draining a pulp slurry in the presence of high molecular weight, water-soluble polymers of N-vinylamides as drainage aids, retention agents and flocculants. These polymers are particularly effective in a pulp slurry which has a high content of interfering substances and other phenolic compounds.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: September 20, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Friedrich Linhart, Hans-Juergen Degen, Werner Auhorn, Michael Kroener, Heinrich Hartmann, Wilfried Heide
  • Patent number: 4560619
    Abstract: A wood improver comprising a waste liquor produced by the digestion of pulp, such as kraft, sulfite or semichemical pulp, and optionally further containing a Steffen waste liquor from beet sugar plant and/or polyethylene glycol. Also disclosed is a method of improving the quality of wood by treating it with the improver to prevent its cracking during drying.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: December 24, 1985
    Assignee: Nippon Tensaiseito Kabushiki Kaisha
    Inventor: Yasutsugu Yamada
  • Patent number: 4394213
    Abstract: A composition comprising salts of lignin sulfonate and hydroxy-aluminum and water. The composition stabilizes soil formations from the effects of water and increases the water resistance of paper products.
    Type: Grant
    Filed: July 1, 1981
    Date of Patent: July 19, 1983
    Assignee: Chevron Research Company
    Inventor: Richard L. Ferm
  • Patent number: 4313790
    Abstract: A process is disclosed for the production of paper and paper-like products which consists of the addition to the papermaking furnish of kraft lignin or modified kraft lignin and poly(oxyethylene).
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: February 2, 1982
    Assignee: Pulp and Paper Research Institute of Canada
    Inventors: Robert H. Pelton, Lawrence H. Allen, Henry M. Nugent
  • Patent number: 4259147
    Abstract: A versatile process and apparatus is presented for producing, in high yields, many different grades of pulp from a single wood specie or for pulping any specie or type of woody material, and for storage and recycling of the by-product liquid and gaseous materials. The process of this invention is virtually pollution free, and the reactant chemicals are recoverable from the by-products. In the alternative, the by-products themselves have a commercial value which may forestall recovery of the reactants. The lignin constituent extracted from the pulp is usable as a resin binder, a wood rehardening agent, or a glue.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: March 31, 1981
    Assignee: New Fibers International
    Inventor: John Gordy
  • Patent number: 4191610
    Abstract: Fibrous materials are disclosed having incorporated therein upgraded waste sulphite liquor; the liquor is neutralized, e. g., with sodium borate, sodium aluminate, reacidified, if needed, with alum; the modified sulphite waste liquor of hardwoods as well as articles of manufacture of fibrous materials such as corrugated medium made of waste materials are diclosed; further, articles of manufacture thus modified include starch or sizing and are within the scope of the invention.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: March 4, 1980
    Inventor: Eric S. Prior
  • Patent number: 4167439
    Abstract: A non-ionic copolymer composed of (in weight percent) 5 to 30% N-vinyl pyrrolidone, 15 to 60% acrylamide, and 30 to 70% methyl methacrylate is disclosed. The copolymer is added in minor amount to paper pulp, especially pulp containing black liquor contamination, to improve the paper making operation and the dry strength of the paper.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: September 11, 1979
    Assignee: Rohm and Haas Company
    Inventor: H. Scott Killam