Mineral Patents (Class 162/145)
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Publication number: 20090242320Abstract: A water-resistant composite paper, suitable for use as a loudspeaker component, is made from a composition including wood pulp, hydrophobic fibers, and stiffening fibers that retain stiffness when wet. In some examples, fibrillated acrylic fibers and glass fibers are used.Type: ApplicationFiled: March 27, 2008Publication date: October 1, 2009Applicant: BOSE CORPORATIONInventors: Agota F. Fehervari, Samuel D. Parrish, Martin J. Schad, Mark P. Temple, Robert E. Evans, Christopher D. Weaver
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Publication number: 20090211717Abstract: A process of producing a part for casting including the step of preparing a raw material slurry containing inorganic fibers, organic fibers, a thermosetting resin, a papermaking binder, and a sulfonate-based and/or a cellulose-based dispersant. The raw material slurry preferably further contains an inorganic powder and/or a water repellant.Type: ApplicationFiled: November 29, 2006Publication date: August 27, 2009Applicant: Kao CorporationInventors: Yoshimasa Takagi, Akira Yoshida
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Publication number: 20090151884Abstract: The invention concerns a paper comprising (a) 40 to 70 parts by weight of polypyridobisimidazole fiber, polypyridobisimidazole pulp, or mixtures thereof and (b) 30 to 60 parts by weight of friction modifiers, structural resins, wet-strength resins, processing aids, fillers, and mixtures thereof; the parts by weight being based on the total amount of a) and b) in the paper.Type: ApplicationFiled: December 19, 2006Publication date: June 18, 2009Inventors: Edmund A. Merriman, Achim Amma
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Publication number: 20080311815Abstract: A water non-dispersible polymer microfiber is provided comprising at least one water non-dispersible polymer wherein the water non-dispersible polymer microfiber has an equivalent diameter of less than 5 microns and length of less than 25 millimeters. A process for producing water non-dispersible polymer microfibers is also provided, the process comprising: a) cutting a multicomponent fiber into cut multicomponent fibers; b) contacting a fiber-containing feedstock with water to produce a fiber mix slurry; wherein the fiber-containing feedstock comprises cut multicomponent fibers; c) heating the fiber mix slurry to produce a heated fiber mix slurry; d) optionally, mixing the fiber mix slurry in a shearing zone; e) removing at least a portion of the sulfopolyester from the multicomponent fiber to produce a slurry mixture comprising a sulfopolyester dispersion and water non-dispersible polymer microfibers; and f) separating the water non-dispersible polymer microfibers from the slurry mixture.Type: ApplicationFiled: August 27, 2008Publication date: December 18, 2008Applicant: EASTMAN CHEMICAL COMPANYInventors: Rakesh Kumar Gupta, Daniel William Klosiewicz, Melvin Glenn Mitchell
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Patent number: 7462259Abstract: New coated nonwoven fibrous mats having properties particularly suited for a facer on gypsum wallboard and other substrates and in laminates of various types, and the method of making the coated mat is disclosed. The mat preferably contains a major portion of glass fibers and a minor portion of a resinous binder. The coating is preferably permeable and reduces fiber dust and abrasion experienced in the past with relatively coarse, relatively inexpensive glass fibers in the mat. Contrary to previous coating methods, the coated fibrous mat is made in-line on a wet mat forming production line by applying a wet foam binder onto a wet, fibrous web followed by drying and curing in-line.Type: GrantFiled: October 14, 2004Date of Patent: December 9, 2008Assignee: Johns MnavilleInventors: Richard Emil Kajander, Alan Michael Jaffee, Glenda B. Bennett
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Patent number: 7402225Abstract: The process according to the invention comprises: a step in which chopped filaments and discontinuous PVOH fibers are dispersed in a process water, followed by a step in which a bed is formed in a forming device by passing the dispersion over a forming cloth through which the process water is drained, the filaments and fibers being retained on said cloth, followed by a heat treatment step in a stoving device. The PVOH fibers impart rigidity to the bed of fibers being formed. This process provides a veil with a very high tensile strength for low proportions of binder.Type: GrantFiled: March 19, 2003Date of Patent: July 22, 2008Assignee: Saint-Gobain Vetrotex France S.A.Inventor: Michel Droux
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Publication number: 20080166937Abstract: A fire-blocking paper (22, 52) is adapted for incorporation into a fire-barrier film laminate (16, 46) for use in thermal and acoustical insulation systems (10, 40), such as, but not limited to, those used in commercial aircraft. The fire-blocking inorganic fiber paper (22, 52) can be laminated to a flame resistant film (24a, 24b, 54a, 54b). The fire-blocking paper (22, 52) may include inorganic bio-soluble fiber, chopped glass non-respirable fibers, organic reinforcing fibers, organic binder, and inorganic binder or filler; and, optionally or refractory ceramic fibers.Type: ApplicationFiled: January 8, 2008Publication date: July 10, 2008Applicant: Unifrax I LLCInventor: Chad E. Garvey
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Publication number: 20080142178Abstract: A method of producing a wet-layed non-woven mat from glass fibers includes the steps of: drawing streams of molten glass into continuous filaments, applying a size to the continuous filaments, gathering the continuous filaments into strands, chopping the strands into discrete length bundles while substantially maintaining the integrity of the bundles, drying the bundles, adding the bundles and a plurality of binder fibers to an aqueous-based mixture, thereby forming a slurry, mixing the slurry to entangle the bundles and the binder fibers, wherein the integrity of the bundles is substantially maintained in the slurry, transferring the slurry to a forming wire, wherein water is removed from the slurry to form a web while substantially maintaining the integrity of the bundles, and heating the web to fuse intersections between the bundles and the binder fibers, thereby forming a mat while substantially maintaining the integrity of the bundles.Type: ApplicationFiled: December 14, 2006Publication date: June 19, 2008Inventors: Daphne Haubrich, Martin M. Tusim, William G. Hager
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Publication number: 20070277948Abstract: The present invention relates to an acoustical tile that includes a core and a surface treatment. The surface treatment comprises a formaldehyde-free latex binder, the binder including at least one formaldehyde-free biocide. The present invention also provides a process of manufacturing an acoustical tile.Type: ApplicationFiled: May 10, 2007Publication date: December 6, 2007Applicant: USG INTERIORS, INC.Inventors: Adelaida CARBO, Gary HACKER, Charles BYERS
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Patent number: 7285183Abstract: A new foam coated nonwoven fibrous mat having properties particularly suited for a facer on gypsum wallboard, laminates made therefrom and the method of making the mat is disclosed. The mat preferably contains a major portion of glass fibers and a minor portion of a resinous binder. The foam coating is permeable and reduces fiber dust and abrasion experienced in the past with relatively coarse, relatively inexpensive glass fibers in the mat. Contrary to previous methods, the foam coated fibrous mat is made in-line on a wet mat forming production line by applying a wet foam binder onto a wet, fibrous web followed by drying and curing in-line.Type: GrantFiled: August 14, 2006Date of Patent: October 23, 2007Assignee: Johns ManvilleInventors: Richard Emil Kajander, Alan Michael Jaffee, Glenda B. Bennett
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Patent number: 6942756Abstract: The invention provides fluororesin fiber paper excellent in adhesion to a copper foil, heat resistance, chemical resistance, low water absorption and electric insulation and capable of being used as a substrate of a printed board suitable for use in high frequency, of which a low dielectric loss is required. The fluororesin fiber paper is a porous sheet obtained by forming a slurry comprising fluororesin fiber into a sheet by a wet paper making method and sintering the resultant sheet and has an average pore diameter of 0.5 to 50 ?m and a maximum pore diameter of at most 250 ?m. A copper-clad laminate for printed board is produced by laminating the fluororesin fiber paper and a copper foil having a ten point mean height of surface roughness profile (Rz) of 0.5 to 8.0 ?m on each other by means of vacuum hot pressing.Type: GrantFiled: July 31, 2002Date of Patent: September 13, 2005Assignee: Tomoegawa Paper Co., Ltd.Inventors: Takanori Suzuki, Hajime Tsuda
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Patent number: 6884321Abstract: A flame and heat resistant paper is disclosed having high burnthrough prevention capability, as required in aircraft applications. The paper is prepared from modified aluminum oxide silica fibers, in addition to other components, and has exceptional tensile strength and flexibility as compared to conventional inorganic papers.Type: GrantFiled: September 20, 2002Date of Patent: April 26, 2005Assignee: Tex Tech Industries, Inc.Inventors: David F. Erb, Jr., Eric D. Ritter, Lisa B. Stang
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Patent number: 6875308Abstract: A new foam coated nonwoven fibrous mat having properties particularly suited for a facer on gypsum wallboard, laminates made therefrom and the method of making the mat is disclosed. The mat preferably contains a major portion of glass fibers and a minor portion of a resinous binder. The foam coating is permeable and reduces fiber dust and abrasion experienced in the past with relatively coarse, relatively inexpensive glass fibers in the mat. Contrary to previous methods, the foam coated fibrous mat is made in-line on a wet mat forming production line by applying a wet foam binder onto a wet, fibrous web followed by drying and curing in-line.Type: GrantFiled: March 3, 2003Date of Patent: April 5, 2005Assignee: Johns Manville International, Inc.Inventors: Richard Emil Kajander, Alan Michael Jaffee, Glenda B. Bennett
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Patent number: 6830656Abstract: The present invention relates to a nonwoven web comprised of metal or refractory fibers with nylon as a binder. The nonwoven web is prepared by forming a foam furnish by agitating the fibers in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. It is preferred that the nylon binder is added to the foam furnish in the form of fibers. Once the furnish is defoamed to form a nonwoven web, the sheet is dried at a temperature sufficient to melt the nylon binder.Type: GrantFiled: April 30, 2002Date of Patent: December 14, 2004Assignee: FiberMark, Inc.Inventor: Homan B. Kinsley, Jr.
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Publication number: 20040231814Abstract: Enhancement of cellulosic paper products with coarse diameter glass wool fibers (average diameter of from about 5.5 &mgr;m to about 11 &mgr;m) results in stronger, more air resistant, and less hygroexpansive paper products. Paper products comprising cellulose pulp and coarse diameter glass wool fibers are disclosed. Additionally disclosed are methods for making coarse diameter glass wool fiber enhanced cellulosic paper products.Type: ApplicationFiled: May 23, 2003Publication date: November 25, 2004Applicant: Evanite Fiber CorporationInventor: Tejendra M. Singh
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Patent number: 6777103Abstract: 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: GrantFiled: October 2, 2001Date of Patent: August 17, 2004Assignee: James Hardie Research Pty LimitedInventors: Donald J. Merkley, Caidian Luo
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Patent number: 6749720Abstract: A wet-formed permeable mat composed of wet use chopped strands (WUCS), chopped roving, and potentially unidirectional roving coupled with an alkaline resistant binder are combined to create an randomly oriented open mat structure with a high degree of openness that can be used in cement backerboard applications. The cement backerboard that is subsequently formed from the wet-formed permeable mat has lower binder content, superior decorative finish, and better permeability control than known glass scrim systems and can be produced in a single continuous step.Type: GrantFiled: March 21, 2001Date of Patent: June 15, 2004Assignee: Owens Corning Fiberglas Technology, Inc.Inventor: Dale A. Grove
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Patent number: 6733628Abstract: Thermoplastic fibers of different melting points are present in an aqueous slurry of refractory fibers, binder and flocculant. The slurry is passed through a screen to form a wet body which is heated to dry the body and melt the thermoplastic fibers to bind the refractory fibers together.Type: GrantFiled: November 7, 2002Date of Patent: May 11, 2004Assignee: Saffil LimitedInventors: John Dinwoodie, Kathleen E. Wade, Stella M. Young
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Publication number: 20040069429Abstract: An element made by papermaking for use in the production of a die casting which comprises an organic fiber, an inorganic fiber, and a binder. The contents of the organic fiber, the inorganic fiber, and the binder are preferably 10 to 70 parts by weight, 1 to 80 parts by weight, and 10 to 85 parts by weight, respectively. The binder is preferably an organic binder. The organic fiber is preferably pulp fiber.Type: ApplicationFiled: August 20, 2003Publication date: April 15, 2004Inventors: Tokuo Tsuura, Hiroaki Kobayashi, Yoshimasa Takagi, Shigeo Nakai, Tokihito Sono
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Patent number: 6712932Abstract: Described is a micro-structured paper or paper-like material having a self-cleaning and/or non-adhesive effect whereby the paper or paper-like material is hydrophobic across the entire cross-section of the material and which is micro-structured in such a way that the surface is provided with elevations and depressions whereby the distance between the elevations ranges from 0.04 to 100 microns and the height of the elevations ranges from 0.04 to 100 microns, and whereby the paper or paper-like material is characterized in that it contains particles having the size of 0.04 to 50 microns that are bound to the paper or paper-like material by means of a binder, and whereby the paper or paper-like material is hydrophobic across the entire cross section of the material, as well as a method for the production thereof.Type: GrantFiled: February 12, 2002Date of Patent: March 30, 2004Assignee: Papierfabrik Schoeller & Hoesch GmbH & Co. KGInventors: Martin Büchsel, Manfred Kaussen, Sabine Schroft
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Patent number: 6706146Abstract: A method for manufacturing a preform having a desirably uniform distribution of structural forms (for example and without limitation, particles, flakes, and fibers) therethrough. The method according to the present invention includes using an electrical charge reaction between cationic and anionic agents (such as, without limitation, cationic and anionic polymers) to cause the structural forms to floc or clump together in a mass in which the structural forms are desirably uniformly distributed therethrough. The flocculent mass is then dewatered and/or dried to form a preform that is ready for further processing.Type: GrantFiled: October 28, 2002Date of Patent: March 16, 2004Assignee: Honeywell International Inc.Inventor: Roger Lee Ken Matsumoto
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Publication number: 20030201082Abstract: The present invention relates to a nonwoven web comprised of metal or refractory fibers with nylon as a binder. The nonwoven web is prepared by forming a foam furnish by agitating the fibers in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. It is preferred that the nylon binder is added to the foam furnish in the form of fibers. Once the furnish is defoamed to form a nonwoven web, the sheet is dried at a temperature sufficient to melt the nylon binder.Type: ApplicationFiled: April 30, 2002Publication date: October 30, 2003Inventor: Homan B. Kinsley
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Patent number: 6616802Abstract: The present invention relates to a method for forming a non-woven fibrous web comprised of refractory fibers which comprises forming a foam furnish by agitating the fibers in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. The present invention employs a unique apparatus for effectively agitating the refractory fibers in the foamed medium, the agitating means being mounted for displacement within the foamed medium and including a convex leading surface facing in the direction of displacement. The leading surface includes upper and lower portions converging in the direction of displacement to form a generally convex leading surface and driving means for displacing the agitating means in the direction of displacement for dispersing and mutually separating the metal fibers within the foamed medium.Type: GrantFiled: April 10, 2002Date of Patent: September 9, 2003Assignee: FiberMark, Inc.Inventors: Homan B. Kinsley, Jr., Christopher B. Peart
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Patent number: 6616804Abstract: An acoustical panel has a fiberboard which includes a fibrous filler and a base binder, and a nodulated overlay disposed on the fiberboard, wherein the overlay includes nodulated wool and an overlay binder and has a substantially smooth surface. In one embodiment of the present invention, the fibrous filler is mineral wool and the base binder is granular starch. In an another embodiment of the present invention, the nodulated wool is nodulated mineral wool and the overlay binder is cooked pearl cornstarch. A method of making the durable acoustical panel in accordance with the present invention is disclosed. Initially, an aqueous slurry comprising a fibrous filler, a base binder, and water is formed. The aqueous slurry is deposited onto a moving foraminous support wire to form an aqueous felt, thereby creating a continuous process. Thereafter, the aqueous felt is de-watered to form a wet felt.Type: GrantFiled: July 23, 2002Date of Patent: September 9, 2003Assignee: AWI Licensing CompanyInventors: Robert E. Foster, Larry R. Parks, James R. Lokey, John J. Janczura, Robert G. Ganse, Barry Buhay, Walter W. Chamberlain, John Felegi, Jr.
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Publication number: 20030150572Abstract: A loudspeaker in which the input resistance is improved and the effect of humidity on the playback frequency response is suppressed, and a method for the preparation of the loudspeaker. A sheet-like product, containing glass particles with a particle size of 8 nm to 300 nm and polyamide resin, and prepared by application of a paper-making technique, is used as the diaphragm. The content of the glass particles in the compound material is 5 weight % to 70 weight %. In preparing the diaphragm, a phase of an aqueous solution containing diamine and water glass is contacted with a phase of an organic solution containing a dicarboxylic acid halide to generate a compound material containing glass particles and the polyamide resin. The compound material so prepared is formed into a sheet by a paper-making technique. In the process of the preparation by the paper-making technique, the compound material mixed with other fibrous material may also be used as a starting material.Type: ApplicationFiled: February 14, 2003Publication date: August 14, 2003Inventors: Masaru Uryu, Kunihiko Tokura, Yoshio Ohashi, Satoshi Idemura, Michiya Nakashima, Katsuji Takahashi
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Publication number: 20030121631Abstract: Thermoplastic fibres of different melting points are present in an aqueous slurry of refractory fibres, binder and flocculant. The slurry is passed through a screen to form a wet body which is heated to dry the body and melt the thermoplastic fibres to bind the refractory fibres together.Type: ApplicationFiled: November 7, 2002Publication date: July 3, 2003Inventors: John Dinwoodie, Kathleen E. Wade, Stella M. Young
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Patent number: 6584981Abstract: The present invention is directed to a method for improving the ash characteristics of a paper wrapper for a smoking article and for improving the ash characteristics of the smoking article itself. Specifically, it has been unexpectedly discovered that the ash cohesiveness of a paper wrapper is noticeably improved when carbon fibers having an average length less than about 0.75 inches are incorporated into the paper in an amount up to about 60% by weight. Paper wrappers made with carbon fibers in accordance with the present invention have superior ash characteristics in comparison to paper wrappers incorporating only flax or other cellulosic fibers. Further, the ash cohesiveness of the paper is improved without resulting in the decline in the quality of other ash characteristics.Type: GrantFiled: November 13, 2001Date of Patent: July 1, 2003Assignee: Schweitzer-Mauduit International, Inc.Inventor: Vladimir Hampl, Jr.
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Patent number: 6579413Abstract: A wet-formed permeable mat composed of wet use chopped strands (WUCS), chopped roving, and potentially unidirectional roving coupled with an alkaline resistant binder are combined to create an randomly oriented open mat structure with a high degree of openness that can be used in cement backerboard applications. The cement backerboard that is subsequently formed from the wet-formed permeable mat has lower binder content, superior decorative finish, and better permeability control than known glass scrim systems and can be produced in a single continuous step.Type: GrantFiled: March 21, 2002Date of Patent: June 17, 2003Assignee: Owens Corning Fiberglas Technology, Inc.Inventor: Dale A. Grove
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Patent number: 6540875Abstract: Provided by the present invention is a process for making wet-layed metal fiber nonwoven sheet. The process comprises dispersing a mixture of metal fibers, wood pulp and a fibrillated material into an aqueous dispensing fluid. The amount of metal fibers dispersed generally ranges from 60 to 80 weight percent, based on the weight of solids, with the amount of wood pulp ranging from 15 to 30 weight percent and the amount of fibrillated material ranging from about 5 to 10 weight percent. The dispersed mixture in the aqueous dispensing fluid is then applied to a screen, with the aqueous dispensing fluid being removed to thereby form a metal fiber sheet.Type: GrantFiled: October 26, 2001Date of Patent: April 1, 2003Assignee: FiberMark, Inc.Inventor: Homan B. Kinsley, Jr.
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Publication number: 20030056912Abstract: The invention concerns a catalyst carrier comprising a fibre paper impregnated with a slurry comprising silica sol, micro fibres and a filler, wherein said micro fibres have an equivalent average particle size, measured with sedigraph method, from about 200 nm to about 30000 nm and said filler has an average equivalent particle size, measured with sedigraph method, from about 300 to about 10000 nm. The invention further concerns a method of its preparation, a slurry useful therefore, a catalyst comprising such a catalyst carrier and use of the catalyst.Type: ApplicationFiled: September 28, 2001Publication date: March 27, 2003Applicant: AKZO NOBEL N.V.Inventors: Anna-Carin Dellve, Bozena Tokarz, Mats Nystrom
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Patent number: 6533897Abstract: The present invention is drawn to a thermally and structurally stable, noncombustible paper, comprising a dominant amount of aluminosilicate refractory fibers and from 0.2% to 4% by weight of a polymeric binder. The refractory fibers can be substantially from 1 micron to 35 microns in width and from 1 cm to 15 cm in length, though other functional dimensions can be used. Optionally, from 0.1% to 5% by weight of viscose fibers and/or from 0.2% to 5% by weight of silicic acid aquagel can also be present. The papers of the present invention are mat-type papers that can be structurally stable at very high temperatures up to about 1400° C. or more.Type: GrantFiled: April 13, 2001Date of Patent: March 18, 2003Assignee: FMJ Technologies, LLCInventors: Roger C. Y. Wang, John Titus
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Publication number: 20030041987Abstract: An acoustical panel has a fiberboard which includes a fibrous filler and a base binder, and a nodulated overlay disposed on the fiberboard, wherein the overlay includes nodulated wool and an overlay binder and has a substantially smooth surface. In one embodiment of the present invention, the fibrous filler is mineral wool and the base binder is granular starch. In an another embodiment of the present invention, the nodulated wool is nodulated mineral wool and the overlay binder is cooked pearl cornstarch.Type: ApplicationFiled: July 23, 2002Publication date: March 6, 2003Applicant: Armstrong World Industries, Inc.Inventors: Robert E. Foster, Larry R. Parks, James R. Lokey, John J. Janczura, Robert G. Ganse, Barry Buhay, Walter W. Chamberlain, John Felegi
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Patent number: 6524438Abstract: A method for manufacturing a preform having a desirably uniform distribution of structural forms (for example and without limitation, particles, flakes, and fibers) therethrough. The method according to the present invention includes using an electrical charge reaction between cationic and anionic agents (such as, without limitation, cationic and anionic polymers) to cause the structural forms to floc or clump together in a mass in which the structural forms are desirably uniformly distributed therethrough. The flocculent mass is then dewatered and/or dried to form a preform that is ready for further processing.Type: GrantFiled: May 11, 2001Date of Patent: February 25, 2003Assignee: Honeywell International Inc.Inventor: Roger Lee Ken Matsumoto
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Patent number: 6517675Abstract: Provided by the present invention is a wet-layed, nonwoven sheet which is comprised of metal fiber and metal powder. Generally, the amount of metal fiber comprises from 20 to 95% by weight and the amount of metal comprises from 5 to 80% by weight of the sheet. Such a wet-layed nonwoven sheet is economically preferable to a sheet comprised totally of metal fiber, since the metal powder is much less expensive. Among other factors, the present invention is based upon the recognition that by using various process techniques, the combination of metal fiber and metal powder can be wet-layed to obtain a structure of sufficient strength for subsequent handling and sintering.Type: GrantFiled: October 26, 2001Date of Patent: February 11, 2003Assignee: FiberMark, Inc,Inventor: Homan B. Kinsley, Jr.
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Publication number: 20030024666Abstract: The invention provides fluororesin fiber paper excellent in adhesion to a copper foil, heat resistance, chemical resistance, low water absorption and electric insulation and capable of being used as a substrate of a printed board suitable for use in high frequency, of which a low dielectric loss is required. The fluororesin fiber paper is a porous sheet obtained by forming a slurry comprising fluororesin fiber into a sheet by a wet paper making method and sintering the resultant sheet and has an average pore diameter of 0.5 to 50 &mgr;m and a maximum pore diameter of at most 250 &mgr;m. A copper-clad laminate for printed board is produced by laminating the fluororesin fiber paper and a copper foil having a ten point mean height of surface roughness profile (Rz) of 0.5 to 8.0 &mgr;m on each other by means of vacuum hot pressing.Type: ApplicationFiled: July 31, 2002Publication date: February 6, 2003Applicant: TOMOEGAWA PAPER CO., LTD.Inventors: Takanori Suzuki, Hajime Tsuda
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Publication number: 20020195216Abstract: The invention relates to a method of forming a multicomponent mat, the multicomponent mat which is formed from glass fibers and natural fibers and methods of making a multicomponent mat. Initially in the method of forming a multicomponent mat, a natural fiber slurry is formed. The next step involves using a surfactant to disperse glass fibers in white water. The natural fiber slurry and the slurry of glass fibers are generally compatible and are combined to form a multicomponent slurry which is used to form a multicomponent mat.Type: ApplicationFiled: April 30, 2001Publication date: December 26, 2002Inventor: Daojie Dong
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Patent number: 6491789Abstract: Composite electrodes including carbon nanofibers (fibrils) and an electrochemically active material are provided for use in electrochemical capacitors. The fibril composite electrodes exhibit high conductivity, improved efficiency of active materials, high stability, easy processing, and increase the performance of the capacitor. A method for producing the composite electrodes for use in electrochemical capacitors is also provided.Type: GrantFiled: March 1, 2001Date of Patent: December 10, 2002Assignee: Hyperion Catalysis International, Inc.Inventor: Chun-Ming Niu
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Patent number: 6488811Abstract: The invention relates to a method of forming a multicomponent mat, the multicomponent mat which is formed from glass fibers and natural fibers and methods of making a multicomponent mat. Initially in the method of forming a multicomponent mat, a natural fiber slurry is formed. The next step involves using a surfactant to disperse glass fibers in white water. The natural fiber slurry and the slurry of glass fibers are generally compatible and are combined to form a multicomponent slurry which is used to form a multicomponent mat.Type: GrantFiled: April 30, 2001Date of Patent: December 3, 2002Assignee: Owens Corning Fiberglas Technology, Inc.Inventor: Daojie Dong
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Publication number: 20020174963Abstract: The present invention is drawn to a thermally and structurally stable, noncombustible paper, comprising a dominant amount of aluminosilicate refractory fibers and from 0.2% to 4% by weight of a polymeric binder. The refractory fibers can be substantially from 1 micron to 35 microns in width and from 1 cm to 15 cm in length, though other functional dimensions can be used. Optionally, from 0.1% to 5% by weight of viscose fibers and/or from 0.2% to 5% by weight of silicic acid aquagel can also be present. The papers of the present invention are mat-type papers that can be structurally stable at very high temperatures up to about 1400° C. or more.Type: ApplicationFiled: April 13, 2001Publication date: November 28, 2002Applicant: FMJ Technologies, LLCInventors: Roger C.Y. Wang, John Titus
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Patent number: 6485608Abstract: The bearing comprises a metal backing, a sintered layer on said metal backing, and a lining layer infiltrated into pores of the sintered layer and standing proud thereof to provide a bearing surface. The lining layer comprises polytetrafluoroethylene including 2 to 10% by volume of fibrillated aramid fibres.Type: GrantFiled: December 17, 1999Date of Patent: November 26, 2002Assignee: Glacier Garlock Bearings, Inc.Inventors: Julie Ann McDonald, John Edward Wheatley, Anthony Latkowski, David Geoffrey Hall
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Patent number: 6425977Abstract: A method of manufacturing a bearing material, a bearing material and a bearing having the bearing material on a strong backing are described.Type: GrantFiled: April 16, 2001Date of Patent: July 30, 2002Assignee: Glacier Garlock Bearings, Inc.Inventors: Julie Ann McDonald, John Edward Wheatley, Anthony Latkowski, David Geoffrey Hall
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Patent number: 6413303Abstract: An activated carbon air filter for use in room air cleaners and the like has a corrugated paper structure formed of substantially non-porous paper, preferably Kraft paper, whose surface is coated with carbon by means for example of a dipping process in which the structure is immersed in an aqueous slurry containing carbon and a binder. Through use of a particular paper thickness and channel dimensions, a highly efficient, low volume, long lifetime air cleaning filter is obtained.Type: GrantFiled: March 11, 1999Date of Patent: July 2, 2002Assignee: Koninklijke Philips Electronics N.V.Inventors: Sigrid M. R. Gelderland, Johannes Marra
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Publication number: 20020060011Abstract: Provided by the present invention is a process for making wet-layed metal fiber nonwoven sheet. The process comprises dispersing a mixture of metal fibers, wood pulp and a fibrillated material into an aqueous dispensing fluid. The amount of metal fibers dispersed generally ranges from 60 to 80 weight percent, based on the weight of solids, with the amount of wood pulp ranging from 15 to 30 weight percent and the amount of fibrillated material ranging from about 5 to 10 weight percent. The dispersed mixture in the aqueous dispensing fluid is then applied to a screen, with the aqueous dispensing fluid being removed to thereby form a metal fiber sheet.Type: ApplicationFiled: October 26, 2001Publication date: May 23, 2002Inventor: Homan B. Kinsley
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Patent number: 6365001Abstract: A method for making a nonwoven reinforcing may for vinyl floor coverings is described. A base mat is formed from a mixture of glass fibers and polymeric binder fibers and/or powder, follows by treatment with a second water-based polymeric binder composition. The mat has been found to be highly satisfactory as a substrate for compressible vinyl floor covering.Type: GrantFiled: May 25, 2001Date of Patent: April 2, 2002Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Gregory S. Helwig, Hendrik Jongetjes, Paul Geel
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Patent number: 6346168Abstract: Provided by the present invention is a wet-layed, nonwoven sheet which is comprised of metal fiber and metal powder. Generally, the amount of metal fiber comprises from 20 to 95% by weight and the amount of metal comprises from 5 to 80% by weight of the sheet. Such a wet-layed nonwoven sheet is economically preferable to a sheet comprised totally of metal fiber, since the metal powder is much less expensive. Among other factors, the present invention is based upon the recognition that by using various process techniques, the combination of metal fiber and metal powder can be wet-layed to obtain a structure of sufficient strength for subsequent handling and sintering.Type: GrantFiled: July 19, 1999Date of Patent: February 12, 2002Assignee: Fibermark, Inc.Inventor: Homan B. Kinsley, Jr.
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Patent number: 6331358Abstract: A wet friction material is mainly composed of a fiber base material, a filler, an friction adjusting agent and a thermosetting resin. The wet frictional material is prepared by impregnating with a liquid thermosetting resin a paper formed by mixing a paper-forming solid thermosetting resin with a fiber base material as at least a part of filler, and then applying heat to the paper so that it is hardened. The solid thermosetting resin is preferably a phenol resin. The liquid thermosetting resin is preferably made of a silicone resin represented by the following average composition formula and the amount of trifunctional unit monomers (RSiO3/2 in which R represents a substituted or unsubstituted monovalent hydrocarbon group) in monomers constituting said silicone resin is from 40 to 100 mol-%: (R1)a(OR2)bSiO(4−a−b)/2.Type: GrantFiled: March 3, 1999Date of Patent: December 18, 2001Assignee: NSK-Warner Kabushiki KaishaInventors: Shun Kitahara, Fumimasa Muramatsu, Shigeki Umezawa
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Patent number: 6315865Abstract: Silyl-linked polyamidoamines, and aqueous compositions including these resins, which have utility in wet strength, dry strength, creping, and glass fiber forming size applications. The resins also are useful as strength additives for paper that contains silicate mineral fillers and/or glass fibers.Type: GrantFiled: February 25, 1999Date of Patent: November 13, 2001Assignee: Hercules IncorporatedInventors: Anthony John Allen, Arjun C. Sau
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Patent number: 6312561Abstract: A sheet composition with certain proportions of meta-aramids and mica used as a flame barrier composition.Type: GrantFiled: January 21, 2000Date of Patent: November 6, 2001Assignee: E. I. Du Pont de Nemours and CompanyInventors: Herman Hans Forsten, Sami Khan
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Patent number: 6309510Abstract: Provided by the present invention is a process for making wet-layed metal fiber nonwoven sheet. The process comprises dispersing a mixture of metal fibers, wood pulp and a fibrillated material into an aqueous dispensing fluid. The amount of metal fibers dispersed generally ranges from 60 to 80 weight percent, based on the weight of solids, with the amount of wood pulp ranging from 15 to 30 weight percent and the amount of fibrillated material ranging from about 5 to 10 weight percent. The dispersed mixture in the aqueous dispensing fluid is then applied to a screen, with the aqueous dispensing fluid being removed to thereby form a metal fiber sheet.Type: GrantFiled: August 2, 1999Date of Patent: October 30, 2001Assignee: FiberMark, Inc.Inventor: Homan B. Kinsley, Jr.
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Patent number: 6299727Abstract: The present invention provides a ceiling panel intended for good design which exhibits a light weight, sufficient flexural strength, incombustibility, sound-absorbing properties and heat insulation properties and desirable electric radiation-absorbing properties as an interior ceiling panel that acts as a best member for solving problems with communications by wireless LAN. The present invention also provides an interior ceiling panel having enhanced electric radiation barrier properties attained by applying a metal foil to the foregoing ceiling panel. A novel incombustible sound-absorbing electric radiation-absorbing ceiling panel having a thickness of from 1 mm to 30 mm is obtained by subjecting a water-dispersed slurry of a mixture of from 67 to 92 wt-% of a rock wool, from 0.5 to 8 wt-% of a beaten pulp, from 2 to 13 wt-% of a binder made of an organic resin, from 0.15 to 1 wt-% of a flocculating agent, from 0.5 to 10 wt-% of a natural mineral fiber and from 0.Type: GrantFiled: June 13, 2000Date of Patent: October 9, 2001Assignee: Nitto Boseki Co., Ltd.Inventors: Hideyuki Hatanaka, Masato Ohtsubo