Articles Patents (Class 162/231)
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Patent number: 7790251Abstract: The specification discloses a method for making a paper material having a reduced tendency to cut human skin. The method includes providing a papermaking furnish containing cellulosic fibers and from about 0.5 to about 5.0 wt % by weight dry basis expandable microspheres, forming a paperboard web from the papermaking furnish, drying the web, and calendaring the web to a caliper of from about 11.0 to about 18.0 mils and a density ranging from about 7.0 to about 12.0 lb/3000 ft2/mil. Papers formed according to the method and articles formed therefrom are also disclosed.Type: GrantFiled: January 23, 2009Date of Patent: September 7, 2010Assignee: International Paper CompanyInventors: Richard C Williams, Peter M Froass, David A Boone, Richard D Faber
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Patent number: 7731820Abstract: The invention relates to a composition comprising a) at least one water-soluble fluorescent whitening agent, b) a polymer formed from an ethylenically unsaturated monomer or monomer blend, characterized in that at least one monomer is acrylamide and the water-soluble polymer has an average (weight average) molecular weight of between 500 and 49,000, optionally, c) polyethylene glycol with a weight average molecular weight of between 500 and 6000 and d) water and the use of the composition for the fluorescent whitening of paper in coating and size press or film press applications.Type: GrantFiled: October 17, 2005Date of Patent: June 8, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Robert Cockcroft, Ted Deisenroth, Peter Rohringer, Winfried Steffen
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Publication number: 20100040825Abstract: Fibrous structure that exhibit a Free Fiber End Count of greater than 100 in the range of free fiber end lengths of from about 0.1 mm to about 0.25 mm as determined by the Free Fiber End Test Method, sanitary tissue products employing same and methods for making same are provided.Type: ApplicationFiled: July 20, 2009Publication date: February 18, 2010Inventors: John Allen Manifold, Jue Wang
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Publication number: 20090314442Abstract: The present invention relates to a process for the manufacture of structural hybrid thermoplastic composites where organic and inorganic fibres are well dispersed in a thermoplastic matrix. The process comprises defibrillating the organic fibres with or without the presence of surface active agents using a mixer at a high shear and at a temperature lower than the decomposition temperature of organic fibres and melting point of the surface active agents to separate the hydrogen bonded fibres and generate microfibres, followed by blending and dispersion of the organic fibres in the thermoplastic matrix to produce a fibre composite, followed by further blending and dispersion of the fibre composite with inorganic fibres at a low shear to get the moldable hybrid composite, followed by extrusion, injection or compression-injection molding. Low shear mixing maintains the inorganic fibre length.Type: ApplicationFiled: September 21, 2007Publication date: December 24, 2009Inventors: Mohini M. Sain, Suhara Panthapulakkal, Shiang F. Law
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Publication number: 20090308557Abstract: A molded article contains inorganic powder as a main component and further contains inorganic fiber, organic fiber, a thermosetting resin, and heat expandable particles, the heat expandable particles being present in an amount of 0.5% to 10% by mass based on the total mass of the inorganic powder, the inorganic fiber, the organic fiber, the thermosetting resin, and the heat expandable particles. The inorganic powder is preferably graphite. The inorganic fiber is preferably carbon fiber. The organic fiber is preferably pulp fiber. The thermosetting resin is preferably a phenol resin.Type: ApplicationFiled: August 24, 2009Publication date: December 17, 2009Inventor: Masayuki Osaki
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Publication number: 20090218063Abstract: Fibrous structures that exhibit a Dry Burst of greater than 360 g as measured according to Burst Test Method and optionally, a Total Dry Tensile of less than 2450 g/76.2 mm Machine Direction (MD) Dry Tensile of less than 1520 g/76.2 mm and/or a Geometric GM) Total Dry Tensile of less than 1180 g/76.2 mm as measured according to the Tensile Test Method are provided.Type: ApplicationFiled: February 29, 2008Publication date: September 3, 2009Inventors: John Allen Manifold, Charles Chidozie Ekenga, Douglas Jay Barkey, Kathleen Diane Sands, Thorsten Knobloch
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Publication number: 20090159225Abstract: A sheet of paper product having two or more complementary function components. One of the complementary function components is a pocket.Type: ApplicationFiled: November 19, 2008Publication date: June 25, 2009Inventors: Noel Mathey Geoffroy, Rachael Eden Walther, Connie Marie Roetker, Paul Francis O'Connor, William Travis Lonigan, Heather Sabrina Cummings, Kathryn Christian Kien
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Publication number: 20090151885Abstract: A papermaking mold 10 includes a mold main body 10A having a wire part and a wire 108 disposed on the wire part. The wire part has a base surface 102, a columnar projection 106 lying sideways on the base surface 102, and at least two plate-like projections 105 at predetermined positions at a predetermined spacing in the longitudinal direction of the columnar projection 106. The facing inner sides 105A of every adjacent two of the plate-like projections 105 are each formed of a part of a circular conical surface or a part of a hyperboloid.Type: ApplicationFiled: August 30, 2007Publication date: June 18, 2009Applicant: Kao CorporationInventors: Sei Ootaki, Yoshimasa Takagi, Masayuki Osaki, Shuu Ahiko
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Publication number: 20090084515Abstract: The invention provides a mold of paper pulp and paper pulp articles shaped by the mold, where the mold of the paper pulp is made up of top mold body and bottom mold body. A space appears as both bodies are combined together, where the top and bottom bodies have corresponding protrusions and hollows respectively. Each has a plurality of through holes, which are set at the surfaces and the lateral sides of the top and bottom mold bodies for accommodating pulp flowing in and pulp pumping pipes plugging in and further for the shaft to hold the mold for rotation, which helps in lifting the average covering in the space encircled by the top and bottom mold bodies, to shape solid paper pulp articles.Type: ApplicationFiled: September 27, 2007Publication date: April 2, 2009Inventors: Tzung Shen Lai, Ting Nan Li
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Publication number: 20090065164Abstract: The present invention aims to provide cellulose-based fibrous materials for obtaining papers and sheets having low density, high surface quality, good size stability despite of high strength, and high opacity. Cellulose-based fibrous materials having external fibrils consisting of an assembly of scale-like microfibrils exhibit a higher fiber stiffness, a lower water retention value and a higher specific surface area as compared with fibrous materials having filamentous external fibrils at the same freeness. Papers and sheets having low density, high surface quality, good size stability and high opacity can be obtained by using such fibrous materials.Type: ApplicationFiled: April 23, 2007Publication date: March 12, 2009Inventors: Shisei Goto, Takaharu Noda, Chie Yuzawa, Takeshi Iimori
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Publication number: 20090045092Abstract: This invention is a design for packaging (boxes or paper bags). The packaging is decorated with a bouquet of miniature mulberry paper flowers on the cover or side of the packaging. The miniature mulberry paper flowers can be roses, calla-lilies, daisies, rosebuds, lotuses, dahlia, poinsettias, gypsos, leaves, sunflowers, chrysanthemums, flat flowers, star flowers, tulips and decorating flowers. These flowers can be of different sizes or colors. The arrangement of the flowers' wires along the main stem's wire of the focal flower chosen allows for a 3-D arrangement. The flowers are arranged in the format of a fresh bouquet of flowers done by a western floral designer. This bouquet of flowers is glued onto the packaging box from the underside of the bouquet. There is the possibility of uncountable permutations of miniature bouquets of flowers. The flowers are bought ready-made from the internet.Type: ApplicationFiled: August 14, 2007Publication date: February 19, 2009Applicant: VIRGINA MARY HOInventor: Virgina Mary Ho
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Patent number: 7482046Abstract: The specification discloses a method for making a paper material having a reduced tendency to cut human skin. The method includes providing a papermaking furnish containing cellulosic fibers and from about 0.5 to about 5.0 wt % by weight dry basis expandable microspheres, forming a paperboard web from the papermaking furnish, drying the web, and calendaring the web to a caliper of from about 11.0 to about 18.0 mils and a density ranging from about 7.0 to about 12.0 lb/3000 ft2/mil. Papers formed according to the method and articles formed therefrom are also disclosed.Type: GrantFiled: October 15, 2004Date of Patent: January 27, 2009Assignee: International Paper CompanyInventors: Richard C Williams, Peter M Froass, David A Boone, Richard D Faber
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Publication number: 20080245491Abstract: Sanitary tissue products, for example toilet tissue products, and arrays thereof associated with non-textual indicia, such as patterns, that are psychologically matched to intensive properties of the sanitary tissue products; processes for making such an array of sanitary tissue products are provided, and marketing articles associated with displaying or advertising an array of sanitary tissue products.Type: ApplicationFiled: August 31, 2007Publication date: October 9, 2008Inventors: Thorsten Knobloch, Jennifer Lori Steeves-Kiss, Michael Ricardo Burns, Mary Windes Burns, Illya Torrance Thomas, John Paul Brase, Dennis Xavier Legault, Dean Larry DuVal
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Patent number: 7410553Abstract: A nonwoven web has a weight sufficient for construction industry use and comprises at least forty percent (40%) recycled waste paper. At least one surface of the web bears a biocide, e.g., has a biocide applied thereto. Preferably the weight of the web is greater than fifteen pounds per thousand square feet (15-lbs/MSF). Preferably the biocide is zinc pyrithione. The web preferably bears at least 50-grams of biocide per thousand square feet per side of said web. One example use of the web is as builders felt, with other uses including as a facer for a laminate board and for asphalt-impregnated webs. The biocide-bearing nonwoven web is specifically directed to use in building construction. One example use of the web is as builders felt, with other uses including as a facer for a laminate board and for asphalt-impregnated webs.Type: GrantFiled: March 4, 2005Date of Patent: August 12, 2008Assignee: Atlas Roofing CorporationInventors: Robert H. Blanpied, Freddie Lee Murphy
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Patent number: 7306846Abstract: Discrete particles of cellulosic material are flowable and meterable. They are easily dispersible in an aqueous or a dry medium. The particles comprise singulated cellulose fibers that have been densified. The particles have a density of at least 0.3 g/cc.Type: GrantFiled: August 19, 2005Date of Patent: December 11, 2007Assignee: Weyerhaeuser CompanyInventors: Ramon C. Dezutter, Michael R. Hansen
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Patent number: 7077933Abstract: A pulp molded article (1) of the present invention comprises a neck portion (2) and a thread (5) provided on the outer surface of the neck portion (2), and has an overrun torque of 1 N·m or higher between the neck portion and a threaded cap screwed on the neck portion (2).Type: GrantFiled: February 27, 2001Date of Patent: July 18, 2006Assignee: Kao CorporationInventors: Kenichi Otani, Yoshiaki Kumamoto
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Patent number: 7019054Abstract: A formulation, and a process for making same, is disclosed which is useful as a coating or treatment for imparting oil and grease resistance to an underlying substrate. The formulation does not contain any fluorochemicals. At the same time, however, the formulation provides oil and grease resistance properties that are equivalent to known coatings and treatments which contain fluorochemicals, particularly those coatings which are permitted to come into direct contact with food products. Therefore, the formulation of the present invention is ideal for use as a coating for paper and paperboard, including paper packaging such as that utilized in food wrappers, food containers, food receptacles and the like, and for other shaped articles. The formulation is also useful as a coating or treatment for providing release properties to an underlying substrate without the use of silicone.Type: GrantFiled: August 15, 2001Date of Patent: March 28, 2006Inventors: Ajit S. Dixit, Melvin G. Mitchell, Jeanette M. Paris, Mark J. Andersen, Christy M. Huggins
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Patent number: 6994772Abstract: Disclosed is a method of producing a fiber-molded hollow article by using a papermaking mold (2) composed of splits (21, 22) which are joined to form a cavity (20) having two openings (20a, 20b) connecting with the outside and an expandable pressing member (3) adapted to be placed in the cavity (20). The method comprises the steps of immersing each of the splits (21, 22) before being joined in a fiber slurry to form a fiber preform (10a, 10b), joining the splits (21, 22) each having the fiber preform (10a, 10b) formed thereon while placing the pressing member (3) in the cavity (20), and molding and dewatering a molded article (1) in the papermaking mold (2).Type: GrantFiled: July 30, 2002Date of Patent: February 7, 2006Assignee: Kao CorporationInventors: Hiromichi Kimbara, Koichi Sagara, Masayuki Osaki, Tokuo Tsuura
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Patent number: 6946049Abstract: A tissue paper used for heat sensitive stencil sheet to be used for a heat-sensitive stencil sheet comprising natural fibers, synthetic fibers, or their mixture, which being impregnated with an ionizing radiation curable type of resin, and a heat-sensitive stencil sheet having a thermoplastic resin film being bonded thereto, wherein, at surface of one side of the resin film, there is provided the tissue paper used for heat-sensitive stencil sheet, which is that being bonded the thermoplastic resin film by point-bonding with using an ionizing radiation-curable resin, and there is provided an anti-sticking layer on the other side of the thermoplastic resin film.Type: GrantFiled: February 3, 2003Date of Patent: September 20, 2005Assignee: Ricoh Company, Ltd.Inventor: Hideyuki Yamaguchi
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Patent number: 6899794Abstract: A liquefied paper material is used as raw materials. A paper frame member 1 supporting a vibrating plate is paper-skimmed and formed. On paper-skimming and forming, a central hole for use in voice coils, air-release hole 1a releasing air pressure in a rear of the vibrating plate to outside due to vibration of the vibrating plate. A loudspeaker system is manufactured using the paper frame member 1.Type: GrantFiled: October 6, 2000Date of Patent: May 31, 2005Assignees: Mitsubishi Denki Kabushiki Kaisha, Morito Co., Ltd., Fuji Cone Seisakusho Co., Ltd., Foster Electric Co., Ltd.Inventors: Teruho Yamada, Masahiko Kawahara, Yukio Sugimoto, Seiji Mori, Toshikazu Iwasaki
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Patent number: 6866906Abstract: The specification discloses a method for making a paper material having a reduced tendency to cut human skin. The method includes providing a papermaking furnish containing cellulosic fibers and from about 0.5 to about 5.0 wt % by weight dry basis expandable microspheres, forming a paperboard web from the papermaking furnish, drying the web, and calendaring the web to a caliper of from about 11.0 to about 18.0 mils and a density ranging from about 7.0 to about 12.0 lb/3000 ft2/mil. Papers formed according to the method and articles formed therefrom are also disclosed.Type: GrantFiled: April 11, 2002Date of Patent: March 15, 2005Assignee: International Paper CompanyInventors: Richard C. Williams, Peter M. Froass, David A. Boone, Richard D. Faber
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Patent number: 6866924Abstract: A tissue paper used for heat sensitive stencil sheet to be used for a heat-sensitive stencil sheet comprising natural fibers, synthetic fibers, or their mixture, which being impregnated with an ionizing radiation curable type of resin, and a heat-sensitive stencil sheet having a thermoplastic resin film being bonded thereto, wherein, at surface of one side of the resin film, there is provided the tissue paper used for heat-sensitive stencil sheet, which is that being bonded the thermoplastic resin film by point-bonding with using an ionizing radiation-curable resin, and there is provided an anti-sticking layer on the other side of the thermoplastic resin film.Type: GrantFiled: February 14, 2002Date of Patent: March 15, 2005Assignee: Ricoh Company, Ltd.Inventor: Hideyuki Yamaguchi
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Patent number: 6841229Abstract: A superabsorbent polymer comprising a delayed absorption superabsorbent polymer having a free water absorbency property of absorbing less than about 3 grams of aqueous saline per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution of superabsorbent polymer ranging from about 40 micrometers to about 890 micrometers.Type: GrantFiled: November 21, 2002Date of Patent: January 11, 2005Assignee: Stockhausen GmbH & Co. KGInventors: Fang Sun, Bernfried A. Messner, Heather S. Jones
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Patent number: 6841041Abstract: A method for producing a pulp molded article (7) comprising the steps of supplying a pulp slurry into the cavity (1) of a mold (10) composed of a set of splits (3 and 4), the set of splits (3 and 4) being assembled together to form the cavity (1) with a prescribed configuration, to form a pulp deposited body (5), feeding a fluid into the cavity (1) to press the pulp deposited body (5) onto the inner wall of the cavity (1) for dewatering.Type: GrantFiled: January 2, 2003Date of Patent: January 11, 2005Assignee: Kao CorporationInventors: Yoshiaki Kumamoto, Kenichi Otani, Shinji Otakura, Tokuo Tsuura, Masataka Ishikawa, Toshiyuki Suga, Akira Nonomura
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Patent number: 6802895Abstract: Non-thermoplastic starch fibers having no melting point and having apparent peak wet tensile stress greater than about 0.2 MegaPascals (MPa). The fibers can be manufactured from a composition comprising a modified starch and a cross-linking agent. The composition can have a shear viscosity from about 1 Pascal·Seconds to about 80 Pascal·Seconds and an apparent extensional viscosity in the range of from about 150 Pascal·Seconds to about 13,000 Pascal·Seconds. The composition can comprise from about 50% to about 75% by weight of a modified starch; from about 0.1% to about 10% by weight of an aldehyde cross-linking agent; and from about 25% to about 50% by weight of water. Prior to cross-linking, the modified starch can have a weight average molecular weight greater than about 100,000 g/mol.Type: GrantFiled: December 19, 2003Date of Patent: October 12, 2004Assignee: The Procter & Gamble CompanyInventors: Larry Neil Mackey, Gregory Charles Gordon, Lora Lee Buchanan, Stephen Wayne Heinzman, Paul Arlen Forshey
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Patent number: 6797119Abstract: A pulp packing material comprising: a first layer containing crosslinked pulp as a main component; and a second layer containing non-crosslinked pulp or biodegradable plastics as a main component, which are produced by sheet making, wherein the first and second layers are stuck and laminated onto each other.Type: GrantFiled: June 7, 2001Date of Patent: September 28, 2004Assignee: Seiko Epson CorporationInventor: Motomu Koike
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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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Publication number: 20040045690Abstract: A pulp molded article having a pulp fiber layer (2) of single layer structure which is formed by papermaking from a single raw material composition and has a density distribution in the thickness direction thereof. The pulp fiber layer (2) has such a density distribution that the density increases or decreases in the thickness direction thereof.Type: ApplicationFiled: June 30, 2003Publication date: March 11, 2004Inventors: Keiji Eto, Yoshiaki Kumamoto, Masataka Ishikawa, Akira Nonomura
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Publication number: 20030213572Abstract: A pulp product that has a low COD is comprised of an unbleached pulp that is soaked and washed in alkaline water for a sufficient time so that the COD after soaking and washing is less than or equal to 3.0 kg/1000 kg of dry pulp. The pulp is produced by repetitively soaking and washing an unbleached pulp in alkaline water that is never allowed to drop below pH 7.0. The pulp is soaked and washed for a total of at least 400 minutes at an elevated temperature to produce the pulp product that has a low COD.Type: ApplicationFiled: July 30, 2002Publication date: November 20, 2003Inventors: Michael D. Vrbanac, Brian Wester, Brian E. Dennis, Peter K. Lau, Julie A. Reimer, David W. Bickell
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Patent number: 6623848Abstract: The invention relates to absorvents for water and aqueous liquids, which are vased on water-swell-able, yet water-insoluble polymers wherein cyclodextrin or cyclodextrin derivatives and zeolites high in silicon have been incorporated ionically, covalently and/or as a result of mechanical inclusion.Type: GrantFiled: February 14, 2002Date of Patent: September 23, 2003Assignee: Stockhausen GmbH & Co. KGInventors: Helmut Brehm, Jorg Harren, Jorg Issberner, Richard Mertens
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Patent number: 6521085Abstract: A method for producing a pulp molded article (7) comprising the steps of supplying a pulp slurry into the cavity (1) of a mold (10) composed of a set of splits (3 and 4) the set of splits (3 and 4) being assembled together to form the cavity (1) with a prescribed configuration, to form a pulp deposited body (5), feeding a fluid into the cavity (1) to press the pulp deposited body (5) onto the inner wall of the cavity (1) for dewatering.Type: GrantFiled: June 22, 2001Date of Patent: February 18, 2003Assignee: Kao CorporationInventors: Yoshiaki Kumamoto, Kenichi Otani, Shinji Otakura, Tokuo Tsuura, Masataka Ishikawa, Toshiyuki Suga, Akira Nonomura
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Patent number: 6455125Abstract: A method for manufacturing a paper core material is described. The paper core material has uses such as in the building industry and has the advantage that no toxic home syndrome is caused in a newly built house or office. The paper core material has a continuous geometric pattern such as rectangular or hexagonal cells and is made by the method of providing a plurality of base paper strips, bending and gluing the base paper strips to form the paper core material having a continuous geometric pattern, treating the paper core material with a charcoal solvent comprising activated carbon dust, wood vinegar and a flame-resisting agent, and drying the paper core material. An alternate method is provided which involves treating the base paper strips with the charcoal solvent, drying the base paper strips, and then bending and gluing the base paper strips to form the paper core material having a continuous geometric pattern.Type: GrantFiled: February 22, 2000Date of Patent: September 24, 2002Assignee: Dice Core CorporationInventor: Michiko Morishita
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Patent number: 6371241Abstract: A speaker frame is constructed from dried paper pulp. Features in the speaker frame such as holes or slits are formed by carbonizing corresponding sections in the dried paper pulp and applying shear processing to remove the carbonized material. A carbonizing mold contains protrusions corresponding to the sections in the dried pulp to be carbonized. The result is a high quality speaker frame that is biodegradable and can be produced economically.Type: GrantFiled: January 24, 2000Date of Patent: April 16, 2002Assignees: Foster Electric Co., Ltd., Mitsubishi Denki Kabushiki KaishaInventors: Teruho Yamada, Tsuyoshi Nakada, Seiji Mori, Toshikazu Iwasaki
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Patent number: 6294265Abstract: Composite cellulose containing materials which are waterproof and biodegradable are produced which consist essentially of cellulose and hydrophobic polymer-based composition in the amount about 4 to 40 wt %. The polymer-based composition comprises first polymer, which is partially saponified polyvinyl acetate, second polymer, which functions as plasticizer for improving elasticity of the first polymer and cross-linking agent, which is capable to cross-link the first polymer. The polymer-based composition may additionally contain environmentally friendly hydrophobizators, fillers and pigments.Type: GrantFiled: September 23, 1999Date of Patent: September 25, 2001Assignee: Rademate Ltd.Inventors: Michael Ioelovich, Oleg Figovsky
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Patent number: 6059926Abstract: To manufacture a diaphragm of the present invention for use in a loud speaker, first a suspension is made by putting fibers consisting chiefly of polysaccharide constituting fibrous molecules into water. Next, suitable pressure is applied to the suspension and then the suspension is jet out into the air of normal pressure. As a result, water which has penetrated into the fibers expands rapidly. This causes the fibers to be sufficiently loosen and split into fibrils. When the fibrils are used for manufacturing a diaphragm, since the fibrils get sufficiently entangled together, a highly stiff and elastic diaphragm with high internal loss is obtained. Optimum fibrils are obtained by simply adjusting the pressure. Therefore, the control of the manufacturing process is simplified.Type: GrantFiled: January 10, 1997Date of Patent: May 9, 2000Assignee: Sharp Kabushiki KaishaInventor: Yukimi Hiroshima
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Patent number: 6019873Abstract: Granular absorbent products with low amounts of paper fiber are described. The absorbent products are made from recycled paper and include less than about 10% of paper fibers having a length sufficient to be retained on a 100 mesh screen. A process for making such granular absorbent products is also provided. The granular absorbents are useful for absorbing liquids spilled on the floor, and are crushable when walked on to provide greater resistance to slipping, and yet have a high resistance to attrition.Type: GrantFiled: March 13, 1998Date of Patent: February 1, 2000Assignee: Marcal Paper Mills, Inc.Inventors: Edward G. Knapick, Brent Willemsen, Ernest P. Wolfer, Michael C. Bonin
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Patent number: 5906713Abstract: A method of preparing biodegradable, water-resistant, moldable paper board or molded paper utensil which includes the steps of: (a) preparing a pulp aqueous slurry at a consistency of about 4%; (b) adding surfactant selected from the group consisting of rosin soap, sodium oleate, sodium stearate, and sodium palmitate to the pulp aqueous slurry; (c) adding between 25-75% weight of a biodegradable and water-resistant agent selected from the group consisting of calcium stearate, cellulose stearate, calcium palmitate and cellulose palmitate to the pulp aqueous slurry to form a slurry mixture; (d) refining the slurry mixture at a consistency of about 4% to a desired drainage; (e) diluting the refined slurry mixture and adding thereto an aggregating agent as alum to form a furnish; (f) forming the furnish to obtain a dry moldable soft paper board; (g) preheating the moldable paper board obtained in step (f) at a temperature from 110.degree. to 170.degree. C.Type: GrantFiled: November 22, 1995Date of Patent: May 25, 1999Assignee: Taiwan Suger CorporationInventors: Wen-Fuei Yeh, Long-Huei Wang, Yao-Tung Liu, Ying-Yu Cheng
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Patent number: 5863388Abstract: A biodegradable and water-resistant paper product which has the compositions of 8-30% weight of a biodegradable and water-resistant agent selected from the group consisting of calcium stearate, cellulose stearate, calcium palmitate and cellulose palmitate, 92-70% weight of pulp, based on the sum of the dry weight of pulp and water-resistant agent; surfactant selected from the group consisting of rosin soap, sodium oleate, sodium stearate, and sodium palmitate; and aggregating agent as alum.Type: GrantFiled: November 16, 1995Date of Patent: January 26, 1999Assignee: Taiwan Sugar CorporationInventors: Wen-Fuei Yeh, Long-Huei Wang, Yao-Tung Liu, Ying-Yu Cheng
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Patent number: 5698291Abstract: Disclosed is a process for producing a crimp-bonded fibrous cellulosic laminate. The process includes the steps of: 1) providing at least two superposed plies of a fibrous cellulosic material; 2) passing the superposed plies through a crimp roll arrangement including a rotating crimp element and a rotating anvil element; and 3) applying a pressure load against the rotating elements sufficient to crimp bond the fibrous cellulosic material plies into a laminate. The crimp element has protruding members configured in a discontinuous pattern aligned on an axis that is parallel to the cross-machine direction to provide a substantially continuous uniform area of localized surface contacts between the rotating crimp and anvil elements across the width of the plies. Also disclosed is an overall crimp-bonded fibrous cellulosic laminate and an apparatus for crimp-bonding multiple superposed plies of a fibrous cellulosic material.Type: GrantFiled: May 23, 1995Date of Patent: December 16, 1997Assignee: Kimberly-Clark CorporationInventors: Harry Edmund Clark, Cynthia Watts Henderson, Robert Clarence Marcinek, Frances Wynn Mayfield, Thad Wayne Perkins, Jorg Friedemann Voss
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Patent number: 5626719Abstract: A process for increasing the resistance of the cut edges of liquid packaging board to penetration by hot hydrogen peroxide, comprising adding to an aqueous pulp slurry at a neutral to alkaline pH, either separately or in preblended form an aqueous emulsion of a cellulose-reactive size, a non-cellulose-reactive size selected from the group consisting of waxes, bis-stearamides, and fatty acid derivatives, and a thermosetting resin that is capable of covalent bonding to cellulose fibre and self-cross-linking.Type: GrantFiled: June 7, 1995Date of Patent: May 6, 1997Assignee: Hercules IncorporatedInventors: Anthony C. Tansley, John D. Ballantine
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Patent number: 5604078Abstract: Thermal dye transfer receiving elements are disclosed comprising a base having thereon a dye image-receiving layer, the base comprising a composite film laminated to a support, the dye image-receiving layer being on the composite film side of the base. The composite film comprises a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface (skin) layer having a thickness of about 3 to about 6 .mu.m, and the support comprising a latex-impregnated paper.Type: GrantFiled: December 7, 1995Date of Patent: February 18, 1997Assignee: Eastman Kodak CompanyInventors: Bruce C. Campbell, Daniel J. Harrison
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Patent number: 5500089Abstract: A method is used for making disposable trays and bowls with organic materials or herbaceous plants that can be easily disintegrated and that has low economical value. The organic materials include straws, bagasses or forage grasses etc., which are cheap and can be easily obtained. The manufacturing costs of the trays and bowls are thus competitive in price and suitable for producing disposable trays and bowls for containing food. No waste water and gas will be produced such that the method meets the requirement of environmental protection.Type: GrantFiled: June 29, 1994Date of Patent: March 19, 1996Inventors: Frank Huang, Chyi-Ying Wu
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Patent number: 5480514Abstract: The diaphragm of the electroacoustic transducer is made of a material in which fibers having at least two different radii taken out of wood are mixed together. Two mean radii A and B, among different mean radii of the fibers are set to satisfy the relationship: 0.5.times.A.ltoreq.B.ltoreq.0.5.times.A. By utilizing such a diaphragm, the balance of the density, rigidity, and internal loss of the diaphragm can be improved, and thus the acoustic characteristics of the electroacoustic transducer such as a speaker unit can be improved.Type: GrantFiled: August 3, 1993Date of Patent: January 2, 1996Assignee: Sharp Kabushiki KaishaInventor: Akihisa Suzuki
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Patent number: 5252129Abstract: A paper decoration is made by immersing a perforated mold having a predetermined shape into a liquid pool containing paper-making ingredients. A layer of the ingredients deposited on the mold is then dried in situ, after which, the dried paper layer is detached and formed into the paper decoration.Type: GrantFiled: April 28, 1992Date of Patent: October 12, 1993Inventor: Peter S. C. Cheng
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Patent number: 4994148Abstract: A method for recycling wood fiber products and particularly newspaper-type pulp, into a new and useful molded product is disclosed. A quantity of paper to be recycled is mixed with sufficient water to form a viscous pulp or slurry by beating the pulp to a desired consistency for a given texture of the product to be made. A pulp press is employed which has a molding chamber with interior sidewalls comprised of a rigid screen through which water can pass and a rigid plate outboard from the screen. The rigid plate has channels formed therein facing the screen through which channels water can flow. One of the sidewalls is movable into the molding chamber to serve as a piston. Some means to drive the movable sidewall, such as an hydraulic jack, completes the press. The beaten pulp is poured into the molding chamber. The chamber is then closed, and the press operated by moving the movable sidewall into the chamber to compress the beaten pulp to a desired pressure and pulp density.Type: GrantFiled: March 14, 1989Date of Patent: February 19, 1991Inventor: Stanley J. Shetka
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Patent number: 4969975Abstract: A process for forming a homogeneous sheet from particulate elements, (as herein defined), at least some of which have an inherent vertical mobility (as herein defined) in water at normal temperature and pressure of from about 1 to about 21 cms/sec, which comprises the steps of forming a foamed dispersion of said particulate elements, and depositing and draining said dispersion on a foraminous support.Type: GrantFiled: February 24, 1989Date of Patent: November 13, 1990Assignee: The Wiggins Teape Group LimitedInventors: Ian S. Biggs, Bronislaw Radvan
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Patent number: 4941948Abstract: Economical manufacturing of wood powder-molded products becomes possible with the introduction of wood pulp as the binding agent to be used in combination with water. The molded products feature not only high moisture absorbing capability and a unique natural touch of hybrid between wood and paper, but easy and convenient disposability after use. The product can be molded into any shape, but the method would be more suitable for manufacturing small-size pellet products form the practical standpoint to perform drying (dehydration) process. This invention enables to utilize wood powder resources including sawdust, which is currently disposed of in a huge amount as the industrial waste, all over the world.Type: GrantFiled: May 19, 1988Date of Patent: July 17, 1990Inventor: Junsaburo Yamamoto
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Patent number: 4711702Abstract: Antistatic cartons of containerboard having 0.3 to 3.5 percent by weight conductive carbon for protecting electrostatic discharge sensitive devices. The containerboard is made from an alkaline pulp which eliminates acid contamination, increases shelf life, provides Mullen burst strength in the linerboard which exceeds 90(.+-.1) pounds per square inch. The surface resistivity is in the range of from 10.sup.3 to 10.sup.9 ohms per square. The carton includes conductive adhesives to insure dissipation of any static charges.Type: GrantFiled: September 25, 1985Date of Patent: December 8, 1987Assignee: Stone Container CorporationInventor: Paul F. Hood
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Patent number: 4560527Abstract: A method of making agglomerated cellulosic particles, particularly useful as a cat litter, comprises agglomerating a moist blend of fibers, aggregates of fibers, and/or fiber-sized pieces of a fibrous cellulosic material in a substantially horizontal rotating drum to form agglomerated particles; compacting surfaces of the particles; and drying the particles.Type: GrantFiled: April 24, 1984Date of Patent: December 24, 1985Assignee: Kimberly-Clark CorporationInventors: Elwood W. Harke, Robert C. Sokolowski, Russell L. Johnson
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Patent number: 4455196Abstract: The present invention contemplates a process for producing a reactor cylinder for use in a radiant heater and the reactor cylinder produced by that process. A liquid vehicle is initially prepared including an alumina dispersion, magnesium sulfate, colloidal silica and powdered talc. An antifoam agent may be added. The alumina dispersion includes dispersable alumina in an amount between about 1% and about 5% by weight, an acid in an amount up to about 0.2% by weight and water in an amount between about 10% and about 30% by weight, all calculated as weight percent based on the weight of the liquid vehicle. The alumina dispersion is then further diluted by the addition of water in an amount between about 40% and about 80% by weight. To the diluted alumina dispersion is added magnesium sulfate in an amount up to about 4% by weight, colloidal silica in an amount up to about 10% by weight and powdered talc in an amount between about 0.0001% and about 0.1% by weight.Type: GrantFiled: December 10, 1982Date of Patent: June 19, 1984Assignee: Thermocatalytic CorporationInventors: Laurence B. Craig, Alfred J. Farina