With Non-fiber Material Added To Product Patents (Class 162/10)
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Patent number: 11993895Abstract: A method for feeding a slurry of chips and liquid to a prehydrolysis reactor in the production of dissolving pulp. The slurry is pumped by using at least one pump to the reactor, and alkali is fed into the at least one pump 5 for adjusting the pH of the slurry to a range of 7-10.Type: GrantFiled: October 2, 2019Date of Patent: May 28, 2024Assignee: ANDRITZ OYInventors: Marco Andrade, Ronny Geiger, Vesa Kaipainen, Auvo Kettunen, Petri Tarjavuori, Viridiane Vianna
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Patent number: 11643776Abstract: The invention discloses a method to form a composition, which method includes fibrillating fibers to form MFC in the presence of an alkali-metal silicate whereby an MFC and silicate mixture is formed The presence of alkali-metal silicate during fibrillation of fibers to MFC, reduces the viscosity and increases the water release behavior, whereby the fibrillation can be accomplished at higher concentrations and a more uniform mixture of MFC-silicate is accomplished. The composition formed by the method of the invention may e.g. be used in paper or paperboard production, in cement production or as an additive in composites.Type: GrantFiled: February 18, 2019Date of Patent: May 9, 2023Assignee: Stora Enso OYJInventors: Philip Håkansson, Kaj Backfolk, Isto Heiskanen
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Patent number: 11255047Abstract: Disclosed in one aspect is a pickled vegetable-based edible packaging paper, the raw material of which is composed of the following components in parts by weight: 92-95 parts of a high dietary fiber-level pickled vegetable, a compounding thickener (0.6-0.8 parts of pectin, 0.6-0.8 parts of potato starch, and 0.2-0.4 parts of soy protein), and a compounding plasticizer (3-4 parts of sorbitol, and 0.5-1.5 parts of citral); and further disclosed in another aspect is a method for preparing a pickled vegetable-based edible packaging paper. The pickled vegetable paper of the present invention is a novel pickled vegetable-based product having both edible and practical functions, which product is rich in dietary fibers, retains the unique flavor and color of the pickled vegetable, has toughness and non-stickiness to teeth, and is soft and easy to process after being wetted.Type: GrantFiled: June 24, 2019Date of Patent: February 22, 2022Assignee: SHANGHAI JIAO TONG UNIVERSITYInventors: Jinhong Wu, Quan Jin, Zhengwu Wang, Qiaoyu Wu, Wei Zhang, Danlu Yang, Ying Yu, Wenhui Li, Xinzhe Gu, Shaoyun Wang, Huiyun Chen
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Patent number: 10745860Abstract: A composition including a first fiber derived from a first natural source, and a second fiber derived from a fruit, the second fiber being substantially free of surface active components. Surface active components may include oils, fatty acids, or other aliphatic and aromatic moieties that compromise edge wick performance. A process of manufacturing a paperboard product may include removing surface active components from fruit fiber to be included in manufacturing paper products to obtain a paper product with improved edge wicking properties.Type: GrantFiled: December 16, 2016Date of Patent: August 18, 2020Assignee: The Coca-Cola CompanyInventors: Kim W. Robinson, Ronald Moffitt, Peter R. Moss, Simon Gainey
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Patent number: 10662301Abstract: A method for producing a lignocellulose plastic composite material, in particular a simpler and more cost-effective option for producing lignocellulose plastic composite materials. Thermoplastic particles and a mixture of water and lignocellulose-containing particles are supplied to a refiner, and the lignocellulose-containing particles are reduced to fibers in the refiner. The thermoplastic particles are supplied to the refiner in a melted or fused state, or are melted or fused in the refiner, so that the melted or fused thermoplastic particles and the lignocellulose-containing particles that are reduced to fibers form material composite particles in the refiner.Type: GrantFiled: August 16, 2016Date of Patent: May 26, 2020Assignee: Universitaet HamburgInventors: Andreas Krause, Oliver Mertens, Othar Kordsachia
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Patent number: 9909260Abstract: A system and method of manufacturing a feedstock for producing paper fiber from fruit of a plant may include providing a by-product source inclusive of fiber from the edible fruit after a process for removing a majority of the edible fruit is used to produce a food. One or more treatment processes to brighten the fruit by-product may be performed. The feedstock may be produced from the brightened fruit by-product.Type: GrantFiled: February 13, 2017Date of Patent: March 6, 2018Assignee: The Coca-Cola CompanyInventors: Peter R. Moss, Simon Gainey, Doug A. Bippert, Philip G. Crandall, Rajesh Kumar Garg, Kim W. Robinson
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Patent number: 8864939Abstract: A system and method of manufacturing a feedstock for producing paper fiber from fruit of a plant may include providing a by-product source inclusive of fiber from the edible fruit after a process for removing a majority of the edible fruit is used to produce a food. One or more treatment processes to brighten the fruit by-product may be performed. The feedstock may be produced from the brightened fruit by-product.Type: GrantFiled: April 18, 2013Date of Patent: October 21, 2014Assignee: The Coca-Cola CompanyInventors: Peter R. Moss, Doug A. Bippert, Rajesh Kumar Garg, Kim W. Robinson, Simon Gainey, Philip G. Crandall
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Patent number: 8864940Abstract: An article including a first fiber derived from a first natural source and a second fiber derived from a fruit. A method of manufacturing an article may include combining a first and second fiber to form a fiber mixture, where the first and second fibers are obtained from discrete materials, and where at least one of the fibers is derived from an edible fruit of a plant. The article may be formed from the fiber mixture.Type: GrantFiled: April 18, 2013Date of Patent: October 21, 2014Assignee: The Coca-Cola CompanyInventors: Peter R. Moss, Doug A. Bippert, Rajesh Kumar Garg, Kim W. Robinson, Simon Gainey, Philip G. Crandall
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Patent number: 8715463Abstract: A particle or particles of cellulosic wood pulp fibers having a top and bottom face and a hexagonal perimeter, and methods of using it.Type: GrantFiled: April 18, 2012Date of Patent: May 6, 2014Assignee: Weyerhaeuser NR CompanyInventors: Christopher A Mann, David G Marsh, Robert T Hamilton, Charles E Miller, Harshadkumar Shah
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Publication number: 20130310489Abstract: A process for providing and processing natural fibres, wherein the process includes the following steps: 1) providing a biomass including fibres and having a dry substance content of at most 50% by weight; 2) adding water to produce a suspension including the biomass; 3) extracting the natural fibres from the biomass; 4) separating the liquid from the suspension; 5) at least single repetition of at least one of steps 2) to 4), the suspension having at least one agent for finishing of the fibres in the last repetition of at least one of steps 2) to 4); and 6) drying the natural fibres.Type: ApplicationFiled: January 26, 2012Publication date: November 21, 2013Applicant: BIOWERT AGInventor: Michael Ludwig Gass
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Publication number: 20130306257Abstract: A pulp making process in which fibrous cellulosic material is pulped to form an aqueous suspension of cellulosic material, the suspension is drained through a screen to form a pulp sheet and that the pulp sheet is dried to form a dry market pulp, in which a water soluble cationic polymer is added to the suspension as the sole drainage aid wherein the water-soluble cationic polymer is either, i) a copolymer comprising (a) between 1 and 70 mole % (meth) acrylamide and (b) between 30 and 99 mole % (meth) acryloyloxyethyl-trimethyl ammonium chloride with an intrinsic viscosity between 5 and 9 dl/g; or ii) a hydrolysed homopolymer of vinylformamide comprising between 1 and 100 mole % vinyl amine units and having a K value of between 45 and 240. The process of the invention provides improved drainage time and solids content of the dewatered pulp.Type: ApplicationFiled: November 14, 2011Publication date: November 21, 2013Applicant: BASF SEInventors: Christian Jehn-Rendu, Joachim Hege, Detlef Kannengießer
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Publication number: 20130228297Abstract: The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starch by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources.Type: ApplicationFiled: March 21, 2011Publication date: September 5, 2013Applicant: FIBRIA CELULOSE S/AInventors: Romolo Ranocchia, Ademilson Massoquete, Danilo Oyakawa
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Patent number: 8372320Abstract: A method of producing dried cellulose nanofibrils includes atomizing an aqueous suspension of cellulose nanofibrils and introducing the atomized aqueous suspension into a drying chamber of a drying apparatus. The aqueous suspension is then dried, thereby forming substantially non-agglomerated dried cellulose nanofibrils.Type: GrantFiled: April 27, 2011Date of Patent: February 12, 2013Assignee: University of Maine System Board of TrusteesInventors: Douglas J. Gardner, Yousoo Han, Yucheng Peng
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Publication number: 20120205059Abstract: In a pretreatment process for lignocellulosic biomass, lignin is separated from cellulose by a reactive extrusion process with flowability control of the biomass suspension. Flowability control via incorporation of flowability control agents renders biomass suspensions processable using equipment in which relatively high shearing stresses and pressures can be applied. In one embodiment, particulate cellulosic biomass is added to a fully-intermeshing twin-screw extruder with pH adjusters, water and flowability control agents. Upon the incorporation of the flowability control agent, the biomass suspension flows without phase separation and thus can be subjected to high mechanical shearing stresses and chemical reaction in the extruder. The screw configuration creates multiple mixing zones within the confines of the extruder. The flowability control agent may be a water-soluble polymer that allows a hydrogel to be formed or may be a recycled portion of the black liquor from the reactive extrusion process.Type: ApplicationFiled: January 24, 2012Publication date: August 16, 2012Inventors: Semra Senturk-Ozer, Halil Gevgilili, Dilhan M. Kalyon
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Patent number: 8231763Abstract: The invention relates to a wood composition containing olefin and raw wood materials, the use of said olefins for rendering raw wood materials water repellent, and a method for producing wood materials therefrom. The raw wood materials contain or are made of lignocellulose and are provided in the form of fibers, strands, or chips.Type: GrantFiled: February 25, 2009Date of Patent: July 31, 2012Inventors: Thomas Buchholz, Gernot Meyer, Marc Prüsmann
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Patent number: 7905987Abstract: A method for making an animal bedding fiber product, the method includes providing fiber from paper sludge, formulating the fiber in a mixture including a first desiccant agent including ash, so as to form a friable aggregate. Further, a fiber product including at least one short paper fiber from a secondary fiber, one or more inorganic fillers including kaolin clay; and a first desiccant agent including ash. Further still, a heatless process for making a fiber product including providing fiber from paper sludge, formulating the fiber in a non-active heat generating mixture including a first desiccant agent including ash, so as to form a waste fiber product.Type: GrantFiled: August 17, 2006Date of Patent: March 15, 2011Assignee: Casella Waste Systems, Inc.Inventor: Patrick Kennedy
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Patent number: 7850821Abstract: A household thin paper, that offers flexibility and further difficulty in tearing, comprising a polyester-based compound represented by General Formula (1): wherein R1 is HO— or HO(R2O)a-, R2 is an alkylene group having 2 or 3 carbon atoms, only a single type of R2O or two types of R2O can be attached randomly or as a block, “a” is 1 to 200, all “a”s may be same or different in an identical molecule, b is 2 to 100, and R3 is a hydrogen atom or the like.Type: GrantFiled: August 24, 2005Date of Patent: December 14, 2010Assignee: Daio Paper CorporationInventors: Tetsuya Uehara, Akira Hirasawa, Hiroshi Ono, Abdolreza Nezamoleslami, Kazuaki Fujimori
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Publication number: 20100307702Abstract: A particle or particles of cellulosic wood pulp fibers having a top and bottom face and a hexagonal perimeter, and methods of using it.Type: ApplicationFiled: June 8, 2009Publication date: December 9, 2010Applicant: Weyerhaeuser NR CompanyInventors: Christopher A. Mann, David G. Marsh, Robert T. Hamilton, Charles E. Miller, Harshadkumar M. Shah
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Publication number: 20100068366Abstract: The disclosed invention relates to a process for making a multiphase mixture, comprising: flowing a first fluid stream through a process microchannel, the first fluid stream comprising at least one liquid and/or at least one gas, the process microchannel having an apertured section; flowing a second fluid stream through the apertured section into the process microchannel in contact with the first fluid stream to form the multiphase mixture, the second fluid stream comprising at least one gas and/or at least one microbody-forming material, the first fluid stream forming a continuous phase in the multiphase mixture, the second fluid stream forming a discontinuous phase dispersed in the continuous phase.Type: ApplicationFiled: November 23, 2009Publication date: March 18, 2010Inventors: Anna Lee Tonkovich, Laura J. Silva, David John Hesse, Michael Alan Marchiando, Micheal Jay Lamont, Dongming Qiu, Terrence Andrew Dritz, Kristina M. Pagnotto, Richard Stevenson, Steven T. Perry, Maddalena Fanelli, Ravi Arora, Bin Yang, Sean Patrick Fitzgerald, Timothy J. Sullivan, Kai Tod Paul Jarosch, Thomas Yuschak
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Publication number: 20090056888Abstract: A process to load a fibrous slurry with a filler, in particular with calcium carbonate (fiber loading). The loaded fibrous slurry is divided into at least two fractions, a light fraction and a heavy fraction, for which purpose hydrocyclones are used in one embodiment. In this case, the different fractions have a different level of loading, that is to say the quantity of precipitated fillers adhering to the fibers is different in each case. There is the possibility of feeding the less highly loaded fibers back into the loading process, in order to increase the level of loading of this fraction further.Type: ApplicationFiled: October 21, 2008Publication date: March 5, 2009Inventors: Klaus Doelle, Joachim Henssler
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Publication number: 20080135194Abstract: Methods are provided for treating suspensions of particles to improve the drainage rate and/or the solids content of flocs of the particles. The method includes the steps of (i) providing a suspension which comprises particles in a fluid; (ii) adding a cyclodextrin compound to the suspension; and (iii) dewatering the suspension by removing at least a portion of the fluid to form a cake comprising the particles. The cyclodextrin compound desirably is added in an amount effective to increase the dewatering rate of the flocs, to increase the solids content, or both, over that rate, solids content, or both, that would be obtained without the addition of the cyclodextrin compound. The suspension may be, for example, a biological or non-biological sludge, or a suspension of pulp fibers, such as in a pulping or papermaking process.Type: ApplicationFiled: February 14, 2006Publication date: June 12, 2008Applicant: GEORGIA TECH RESEARCH CORPORATIONInventor: Sujit Banerjee
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Patent number: 7378149Abstract: The present invention relates to a high strength material and a high strength molded article including 65 to 100 wt. % of cellulose microfibrils; and products comprising these. The material, which is lightweight and has a very high strength, can be used for various purposes and can be produced by recycling wastepaper, used cloth and the like. Furthermore, by appropriately selecting the type and/or amount of binder, the material comprising microfibrils as a main component can be decomposed by microbes or the like after being dumped as waste, and is thus friendly to the global environment.Type: GrantFiled: December 26, 2002Date of Patent: May 27, 2008Assignee: Kansai Technology Licensing Organization Co, Ltd.Inventors: Hiroyuki Yano, Susumu Nakahara
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Patent number: 7300546Abstract: A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to decay, these treatments have not been entirely satisfactory where the fiber had to be refined before use. Refining energy was very high and fiber length loss was substantial. Treatment of cellulose fiber with dideyldimethylammonium chloride (DDAC) or bromide (DDAB), these materials in combination with low levels of copper, or low levels of copper alone, has given a product with very good biostability without a major increase in refining energy or loss of fiber length. The treated fiber is particularly advantageous as a reinforcing component for cement board products.Type: GrantFiled: July 29, 2005Date of Patent: November 27, 2007Assignee: Weyerhaeuser CompanyInventors: Richard A. Jewell, Julie A. Reimer
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Patent number: 7297230Abstract: A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to decay, these treatments have not been entirely satisfactory where the fiber had to be refined before use. Refining energy was very high and fiber length loss was substantial. Treatment of cellulose fiber with dideyldimethylammonium chloride (DDAC) or bromide (DDAB), these materials in combination with low levels of copper, or low levels of copper alone, has given a product with very good biostability without a major increase in refining energy or loss of fiber length. The treated fiber is particularly advantageous as a reinforcing component for cement board products.Type: GrantFiled: July 29, 2005Date of Patent: November 20, 2007Assignee: Weyerhaeuser CompanyInventors: Richard A. Jewell, Julie A. Reimer
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Patent number: 7244338Abstract: A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to decay, these treatments have not been entirely satisfactory where the fiber had to be refined before use. Refining energy was very high and fiber length loss was substantial. Treatment of cellulose fiber with didecyldimethylammonium chloride (DDAC) or bromide (DDAB), these materials in combination with low levels of copper, or low levels of copper alone, has given a product with very good biostability without a major increase in refining energy or loss of fiber length. The treated fiber is particularly advantageous as a reinforcing component for cement board products.Type: GrantFiled: September 17, 2003Date of Patent: July 17, 2007Assignee: Weyerhaeuser CompanyInventors: Richard A. Jewell, Julie A. Reimer
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Patent number: 7179348Abstract: A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to decay, these treatments have not been entirely satisfactory where the fiber had to be refined before use. Refining energy was very high and fiber length loss was substantial. Treatment of cellulose fiber with didecyldimethylammonium chloride (DDAC) or bromide (DDAB), these materials in combination with low levels of copper, or low levels of copper alone, has given a product with very good biostability without a major increase in refining energy or loss of fiber length. The treated fiber is particularly advantageous as a reinforcing component for cement board products.Type: GrantFiled: August 27, 2002Date of Patent: February 20, 2007Assignee: Weyerhaeuser CompanyInventors: Richard A. Jewell, Julie A. Reimer
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Patent number: 7045027Abstract: The present invention relates to a method of producing a fiber board characterized in that it comprises the following processes (a)–(f): (a) a separating process of a bast portion, (b) a fiberizing process by defibrating the bast portion of the kenaf, (c) a preparing process of a mat comprising the kenaf fibers having an average length of 10–200 mm and an average diameter of 10–300 ?m, (d) a supplying process of an adhesive agent into the fiber mat, (e) a drying process of the adhesive agent, and (f) a molding process by heating said fiber mat under pressure to form a fiber board having a density of 600–900 kg/m3.Type: GrantFiled: January 15, 2004Date of Patent: May 16, 2006Assignee: Matsushita Electric Works, Ltd.Inventors: Masayuki Okuzawa, Kenji Ohnishi, Yuzo Okudaira, Hideyuki Ando, Kazunori Umeoka, Bunkai Ryu, Shigeki Naito, Ryo Sugawara
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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: 20040140071Abstract: An object of the present invention is to provide a laminated photocatalytic pulp paper having a variety of uses such as a filter material, a packaging material, a construction material and the like, which has the antibacterial property, the bad smell degrading property and handful substance oxidatively degrading property, is useful for use in air treatment, water treatment and soil treatment and, at the same time, can improve the photocatalytic activity effect itself of titanium oxide. According to the present invention, there is provided a laminated photocatalytic pulp paper characterized in that a wastepaper pulp is laminated on a photocatalytic pulp composition in which 40-95 wt % of a pulp and/or a paper having the water content of 3 wt % or less, an average fiber diameter of 5-300 &mgr;m and an average fiber length of 0.1-70 mm are blended with 5-60 wt % of titanium oxide, and a paper string comprising this pulp paper.Type: ApplicationFiled: January 2, 2004Publication date: July 22, 2004Inventor: Nishibori Sadao
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Patent number: 6579410Abstract: A new composite material which is useful as a pigment in paper making or paper coating is produced by precipitating a white insoluble pigment compound, eg calcium carbonate, in an aqueous suspension containing a mixture of fine particulate material eg titanium dioxide particles and fibers, eg cellulosic fibers. These suspended solids in the mixture are derived from separate stocks and added together to produce the composite pigment material. The new material is a bonded matrix of the fibers and the white pigment compound having particles of the fine particulate material, eg TiO2, dispersed and bonded within the matrix. The new material may exist in the form of particles in dry or wet form which may be further treated in a known way prior to use in paper making or paper coating.Type: GrantFiled: October 24, 1997Date of Patent: June 17, 2003Assignee: Imerys Minerals LimitedInventors: Ian Stuart Bleakley, Jonathan Stuart Phipps, Paul A Rey, Jose M Rodriguez, Hannu Olavi Ensio Toivonen
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Publication number: 20030051833Abstract: There is provided a photocatalytic pulp composition having the antibacterial, bad smell degrading and harmful substance oxidatively degrading effects in various wide uses such as a filter material, a packaging material, a building material. A photocatalytic pulp composition is effectively used in the air treatment, the water treatment and the soil treatment and improves the photocatalytic activity effect itself.Type: ApplicationFiled: May 17, 2002Publication date: March 20, 2003Inventor: Sadao Nishibori
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Patent number: 6425973Abstract: A method of treating solid containing material derived from effluent or sludge from a plant for de-inking paper, the material containing calcium in the form of one or more insoluble calcium compounds, the method including the steps of treating the material with an acid to cause dissolution of the calcium thereby forming a calcium ion-containing solution in which insoluble solids are suspended, separating the solution from the insoluble solids and incinerating the separated solids. The solution containing calcium ions may be treated by adding one or more reagents to form a calcium compound precipitate, eg calcium carbonate. The particulate solids produced following the incineration step and following the precipitate formation may be employed as pigments or fillers in paper making or paper coating.Type: GrantFiled: November 22, 2000Date of Patent: July 30, 2002Assignee: Imerys Minerals LimitedInventor: Jonathan Stuart Phipps
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Publication number: 20020074096Abstract: The invention relates to a process for producing wood fiberboard by pressing wood fibers which have been treated with binder, in which the wood fibers are boiled and milled at elevated temperature under steam pressure in a refiner unit, subsequently are transferred to a blow-line, then dried and finally pressed under pressure and, if desired, at elevated temperature to produce boards, wherein the treatment with binder is carried out using a multi-component binder, preferably with one component A) containing functional groups which are nonreactive at elevated temperature and a second component B) containing functional groups which are reactive at elevated temperature the component A) being added in the refiner unit at a temperature of from 120° C. to 200° C. prior to the milling step, during the milling step, or shortly after the milling step in the front section of the blow-line and component B) being added at a lower temperature of not more than 150° C.Type: ApplicationFiled: October 31, 2001Publication date: June 20, 2002Applicant: Wacker Polymer Systems GmbH & Co. KGInventors: Konrad Alfons Wierer, Abdulmajid Hashemzadeh, Klaus Marquardt
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Publication number: 20020074095Abstract: The invention relates to a process for producing wood particleboard, in which wood particles, if appropriate after a preceding comminution step, are treated with a crosslinkable binder and are subsequently pressed together under pressure and, if desired, elevated temperature to produce boards, wherein the thermoplastic binder comprises two constituents A) and B), where A) is a copolymer comprising one or more comonomer units selected from the group consisting of vinyl esters of unbranched or branched alkylcarboxylic acids having from 1 to 18 carbon atoms, acrylic esters or methacrylic esters of branched or unbranched alcohols having from 1 to 15 carbon atoms, dienes, olefins, vinylaromatics and vinyl halides, and from 0.Type: ApplicationFiled: October 31, 2001Publication date: June 20, 2002Applicant: Wacker Polymer Systems GmbH & Co. KGInventors: Konrad Alfons Wierer, Abdulmajid Hashemzadeh, Klaus Marquardt
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Patent number: 6336993Abstract: A system and method for feeding a slurry of comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester also treat the material to remove metals before digestion. During pumping of the slurry with at least first and second series connected pumps, at or upstream of at least one of the pumps chemicals (acids and/or chelating agents) which dissolve the metals in the material are added, and preferably some of the liquid is removed so as to purge at least about 10% (e.g. about 20-80%) of the metals in the material. The metal removal preferably takes place substantially immediately before alkaline digestion.Type: GrantFiled: May 11, 2000Date of Patent: January 8, 2002Assignee: Andritz-Ahlstrom Inc.Inventor: C. Bertil Stromberg
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Patent number: 6309509Abstract: 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: GrantFiled: October 11, 1996Date of Patent: October 30, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood
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Publication number: 20010004869Abstract: The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are readily redispersable and conserve their initial Theological properties.Type: ApplicationFiled: February 14, 2001Publication date: June 28, 2001Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joel Benchimol
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Shaped, plastic articles comprising a cellulose fiber, a cellulose ester, and a non-ionic surfactant
Patent number: 6193841Abstract: 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: GrantFiled: November 30, 1998Date of Patent: February 27, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood -
Patent number: 5968634Abstract: A paper or transparency receiving toner to be fixed by heat has an ionomeric resin on its outer surface. For universal application, the outer layer is a blend of non-ionomeric resin, such as styrene acrylate copolymer, and an ionomer, which permits the material of the toner to molecularly intermingle with the blend during heat fixing. Irradiation raises the melting point of the ionomeric resin to prevent delamination. The resulting printing is strongly bonded to the substrate and is of excellent quality.Type: GrantFiled: June 10, 1997Date of Patent: October 19, 1999Assignee: Lexmark International, Inc.Inventors: Jan Rose Heeg, Rolfe Frank Kruckas, Ashok Murthy, Stephen Todd Olson, Jeanne Marie Saldanha-Singh, Rita Sharma, Ajay Kanubhai Suthar, Richard Barber Watkins, Joe Williams Woods
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Patent number: 5804035Abstract: A process is dislcosed for recovering chips and fibers from residues of ter-derived materials, old pieces of furniture, production residues, water and other timber-containing materials glued with urea-formaldehyde binders or other binders capable of being hydrolysed or chemically disintegrated by disintegrating the timber-derived materials at a high temperature. In a first step of the process, the residues of timber-derived materials are impregnated with an impregnating solution and previously swollen until they have absorbed at least 50% of their own weight of impregnating solution. In a second step, the thus impregnated residues of timber-derived materials are heated up to 80.degree. C. to 120.degree. C. The thus disintegrated residues of timber-derived materials are then sorted by sieving and/or wind screening. The residues of timber-derived material have edges of at least 10 to 20 cm length.Type: GrantFiled: January 26, 1996Date of Patent: September 8, 1998Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung e.V.Inventors: Andreas Michanickl, Christian Boehme
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Patent number: 5741572Abstract: A paper or transparency receiving toner to be fixed by heat has an ionomeric resin on its outer surface. For universal application, the outer layer is a blend of non-ionomeric resin, such as styrene acrylate copolymer, and an ionomer, which permits the material of the toner to molecularly intermingle with the blend during heat fixing. Irradiation raises the melting point of the ionomeric resin to prevent delamination. The resulting printing is strongly bonded to the substrate and is of excellent quality.Type: GrantFiled: February 17, 1995Date of Patent: April 21, 1998Assignee: Lexmark International, Inc.Inventors: Jan Rose Heeg, Rolfe Frank Kruckas, Ashok Murthy, Stephen Todd Olson, Jeanne Marie Saldanha-Singh, Rita Sharma, Ajay Kanubhai Suthar, Richard Barber Watkins, Joe William Woods
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Patent number: 5624616Abstract: A method for making lignocellulose fibers, which may be optionally coated with a suitable thermoplastic, wherein the starting materials may be chosen from a wide variety of generally non-recyclable contaminated wood, paper, and/or plastic products. A mixture of the preferred lignocellulose material characterized by a relatively low moisture content and the desired thermoplastics is refined and comminuted in a steam atmosphere which is at a temperature, pressure, and duration sufficient to soften both the lignin within the wood chips and the thermoplastic polymer. The temperature of the steam atmosphere is relatively high because of the use of dry wood chips which do not result in excessive vaporization during heating. The comminution of the mixture occurs by auguring the mixture between counter-revolving dual refining discs in the elevated temperature, pressurized steam atmosphere.Type: GrantFiled: April 20, 1995Date of Patent: April 29, 1997Inventor: S. Hunter W. Brooks
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Patent number: 5582682Abstract: The specification discloses an unorthodox system for manufacturing strong, light-weight and weather-resistant cellulosic composite materials from discarded paper and newsprint, and papermill sludge--and from an unlimited variety of particulated fibrous lignocellulosics--without the use of an extrinsic adhesive. Both the matrix-forming resin and the fiber-substrate, which comprise the entire composite, are spontaneously created in situ at ambient conditions by the ammoniation of a mixture of a protein-containing material and a particulated cellulosic. Heating an article shaped from such a mixture to above 175.degree. C. polymerizes the resin and bonds the fiber-substrate into a cellulosic composite product. Also disclosed is a process for manufacturing reinforced and laminated composites as well as a composition which simplifies the production of both cellulosic composites and all-biomass thermosetting resins.Type: GrantFiled: May 31, 1994Date of Patent: December 10, 1996Inventor: Arthur Ferretti
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Patent number: 5000822Abstract: An imitation leather product and a process for the preparation of the imitation leather product from natural hemp which comprises the steps of (a) firstly digesting natural hemp fiber with weak alkali solution, (b) secondly digesting with ammonia gas, (c) presoak treating either with methylol urea and ammonium phosphate, or sodium chromate and sulfuric acid, and immediately adding ammonia thereto, respectively, (d) beating with SBR resin and cyclohexylcarboxyl diphenylamino thiazolyl sulfonamide, (e) jetting through a multiple stage fiber jetting device, and soaking in a soaking bath container containing methylphenol and SBR resin.Type: GrantFiled: June 23, 1989Date of Patent: March 19, 1991Assignees: Tae S. Hwang, Young K. HongInventors: Tae S. Hwang, Kyung H. Kim
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Patent number: 4882190Abstract: A method of producing sulfite-free sugarbeet pulp involving contacting sugarbeet pieces with a sulfite-free aqueous solution containing a non-sulfite antioxidant composition containing sodium erythorbate, calcium chloride, araboascorbic acid, citric acid, trisodium citrate, and mixtures thereof.Type: GrantFiled: December 8, 1987Date of Patent: November 21, 1989Assignee: American Crystal Sugar CompanyInventors: Roland F. Olson, Richard R. Fergle
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Patent number: 4875974Abstract: An absorbent material derived from a vegetable material containing pectin.Type: GrantFiled: January 20, 1988Date of Patent: October 24, 1989Assignee: The Procter & Gamble CompanyInventor: Thomas F. Rich
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Patent number: 4533436Abstract: A method and apparatus for producing a synthetic board from cellulosic and/or lignocellulosic materials wherein a thermosettable binder, preferably a polyisocyanate binder, is applied through a cooled nozzle to the hot and wet fibrous material in the blow line out of the refiner of a board forming process. Polyphenylpolyisocyanates, such as a mixture of diphenylmethane-4,4'-diisocyanate and polymethylene polyphenyl polyisocyanates, are a particularly suitable binder.Type: GrantFiled: August 15, 1983Date of Patent: August 6, 1985Assignee: The Celotex CorporationInventors: William E. Betzner, Richard K. Holtman
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Patent number: 4514255Abstract: The problem of resin precure encountered in fiberboard, especially medium-density fiberboard, produced by blow-line blending is overcome by adding an alkaline material to the wood fibers prior to blow-line blending in order to raise the pH of the wood preferably into the range of 4 to 7, and optimally around 5.5. Only the fiber used to form the surface layers of the mat which is hot pressed to form the fiberboard need have the alkaline material added thereto; alternatively, especially in the core layer of the mat, the action of the alkaline material may be reversed by adding an acid catalyst. The fiberboards formed have a glossy, hard surface which reduces the need for sanding.Type: GrantFiled: August 19, 1983Date of Patent: April 30, 1985Assignee: Borden, Inc.Inventors: John W. Maxwell, Brian Vyse
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Patent number: 4347100Abstract: An additive comprising an anionic organic surface active agent is incorporated into mechanical or thermomechanical pulp at an elevated temperature and pressure. The additive causes dispersion of lignin and retards redeposition of lignin so that the bursting strength of the paper formed from the pulp is improved. The preferred additives are higher molecular weight anionic organic polyelectrolytes or polymers, particularly polymeric sulfonates. Further improvement in bursting strength is achieved by the wet end addition of a cationic organic polyelectrolyte or polymer, with or without starch. Lower molecular weight anionic organic detergents can also be used but should be rinsed from the pulp before forming paper.Type: GrantFiled: May 21, 1981Date of Patent: August 31, 1982Assignee: The Chemithon CorporationInventor: Albert Brucato