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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7943008 | Method of pre-treating woodchips prior to mechanical pulping A method of making pulp adapted to be used in forming corrugating medium is disclosed. The method comprises cooking woodchips in a first liquor in the absence of an alkali addition. The method further comprises mechanically fiberizing the woodchips to form a pulp. T... | 05/17/2011 |
| 7771565 | Method of pre-treating woodchips prior to mechanical pulping A method of making pulp adapted to be used in forming corrugating medium is disclosed. The method comprises cooking woodchips in a first liquor in the absence of an alkali addition. The method further comprises mechanically fiberizing the woodchips to form a pulp. T... | 08/10/2010 |
| 7736463 | Method for manufacturing bleached mechanical and chemithermomechanical pulp A method of manufacturing bleached mechanical and chemithermomechanical pulp is provided, having enhanced bleaching effect, wherein lignocellulose material is passed through at least one preheater or through a chemical treatment system, a steam separator and a refin... | 06/15/2010 |
| 7513973 | Bleached polyacrylic acid crosslinked cellulosic fibers Bleached polyacrylic acid crosslinked cellulosic fibers, methods for making the fibers, and products including the fibers. The bleached polyacrylic acid crosslinked cellulosic fibers are polyacrylic acid crosslinked cellulosic fibers that have been treated with one ... | 04/07/2009 |
| 7354743 | Methods for degrading lignocellulosic materials The present invention relates to methods for degrading a lignocellulosic material, comprising: treating the lignocellulosic material with an effective amount of one or more cellulolytic enzymes in the presence of at least one surfactant selected from the group consi... | 04/08/2008 |
| 7314561 | Method for purifying water An integrated system and method for removing excess nutrients from water, for removing the nutrients from the removal site, for enhancing soil, and for producing pulp and paper products includes bioremediating water to be treated with cultured algae or another suita... | 01/01/2008 |
| 7300541 | High defiberization chip pretreatment A chip pretreatment process which comprises conveying the feed material through a compression screw device having an atmosphere of saturated steam at a pressure above about 5 psig, decompressing and discharging the compressed material from the screw device into a de... | 11/27/2007 |
| 7294225 | Process for production of synthesis gas in combination with the maintenance of the energy balance for a pulp mill A process (44) for the production of pulp and paper (28), recycling of cooking chemicals (3, 29), combustion of biomass (30, 37) and generation of heat and electric energy (27, 40) comprising a pulp and paper mill (28), in t... | 11/13/2007 |
| 7294227 | Method and system for the treatment of pulp prior to ozone bleaching A system for treating pulp comprises a dewatering device (2) for dewatering the pulp to a fiber concentration of at least 20%, a closed pulp-shredding vessel (16) for shredding the dewatered pulp, and an outlet pipe (22) from the pulp-shredding ... | 11/13/2007 |
| 7291247 | Absorbent sheet made with papermaking fibers with durable curl A process for bleaching high bulk cellulosic fiber and producing a durable elevated curl index includes: (a) concurrently bleaching, heat treating and convolving cellulosic fiber pulp at elevated temperature and pressure at high consistency generally under condition... | 11/06/2007 |
| 7288196 | Plant matter packaging method An integrated system and method for removing excess nutrients from water, for removing the nutrients from the removal site, for enhancing soil, and for producing pulp and paper products includes bioremediating water to be treated with cultured algae or another suita... | 10/30/2007 |
| 7267773 | Integrated system and method for purifying water, producing pulp and paper, and improving soil quality An integrated system and method for removing excess nutrients from water, for removing the nutrients from the removal site, for enhancing soil, and for producing pulp and paper products includes bioremediating water to be treated with cultured algae or another suita... | 09/11/2007 |
| 7264690 | Catalyzer for clean pulping and process for using the same A catalyzer for clean pulping includes sodium salicylate, anion silicate softener, cooking aids, liquid(gaseous) chlorine and water. A process for using the catalyzer for clean pulping includes the following steps: 1, cutting and impurities removing for the r... | 09/04/2007 |
| 7252739 | Method for distributing cellulose pulp of low and medium consistency in order to form a uniform pulp web The method is for distributing cellulose pulp that has a 2-12% consistency. A manifoid housing is in fluid communication with distributor housing. The distributor housing has holes that are distributed along a generatrix of the distribution housing. The cellulose pu... | 08/07/2007 |
| 7229525 | Methods to enhance pulp bleaching and delignification A method to enhance brightness in Chemical and Mechanical pulps comprising adding an organic sulfide chelant is described and claimed. A method to enhance delignification in a Chemical pulp comprising adding an organic sulfide chelant is also described and cl... | 06/12/2007 |
| 7198695 | Method for separating hemicelluloses from a biomass containing hemicelluloses and biomass and hemicelluloses obtained by said method The invention relates to a method for separating hemicelluloses from a biomass containing hemicelluloses. The method includes the steps of: a) extracting the hemicelluloses from the biomass containing hemicelluloses by treating them with a complex compound in an aqu... | 04/03/2007 |
| 7186316 | Method for preparing pulp from cornstalk Disclosed is a method for preparing paper pulp from cornstalks comprising the steps of cooking, washing, screening, thickening, bleaching, beating and drying performed under moderate conditions which have little noxious effects on the environment. By using cornstalk... | 03/06/2007 |
| 7182836 | Method for delignifying lignocellulosic raw materials The invention relates to a method for delignifying lignocellulosic raw materials by using sulfites in the presence of an alkaline component, especially sodium hydroxide or sodium carbonate or a mixture thereof in an aqueous solution at a high temperature and high pr... | 02/27/2007 |
| 7179347 | Method for fiber stock preparation A method for the preparation of fiber stock for the production of paper or cardboard, including the steps of: a) Supplying fibers in the form of a suspension that has a predetermined solids content, b) Loading of t... | 02/20/2007 |
| 7163564 | Method for brightening virgin mechanical pulp A method for brightening virgin mechanical pulp. The method comprises combining: (i) an aqueous solution comprising sodium borohydride and sodium hydroxide; and (ii) an aqueous solution comprising sodium bisulfite, in a chemical mixer and adding output of the chemic... | 01/16/2007 |
| 7052578 | Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp Wood pulp is bleached using hydrogen peroxide as the oxidative bleaching agent in the presence of magnesium hydroxide or magnesium oxide. The bleaching process is carried out in the presence of magnesium hydroxide as the predominant, and preferably essential, source... | 05/30/2006 |
| 7037441 | Durable press cellulosic fibrous substrates with improved physical properties This invention is directed to a finishing method and composition for greatly increasing the tear strength and flex abrasion resistance of durable press cellulosic (including cotton) fabric, without sacrificing its durable press properties. ... | 05/02/2006 |
| 7029554 | Method for brightening pulp with hydrosulfite solution generated from borohydride and bisulfite A method for brightening pulp at a pH from 4.5 to 9. The method comprises the steps of: (a) combining an alkali metal borohydride, an alkali metal hydroxide, an alkali metal bisulfite and phosphoric acid to form a reducing solution; and (b) adding the reducing solut... | 04/18/2006 |
| 7018509 | Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing This invention relates to an improved process for manufacturing bleached thermomechanical aspen pulp having reduced yellow after treatment with aluminum based chemicals such as alum which are used in paper making processes. In this improved process the pulp is washe... | 03/28/2006 |
| 7005034 | Method in connection with the production of mechanical pulp A method in connection with the production of mechanical pulp from a cellulose containing material wherein the material is processed in at least one refining step to produce pulp. According to the invention, the pulp is fractionated (4), after a first refinin... | 02/28/2006 |
| 7005447 | Food product comprising hydroxymatairesinol A food product containing an effective amount of an active agent which is hydroxymatairesinol, a geometric isomer or stereoisomer thereof, or an acceptable salt thereof, or a mixture thereof, where the food product is selected from the group consisting of a nutritio... | 02/28/2006 |
| 7001484 | Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent A process for peroxide bleaching of mechanical or high yield pulp, the process comprising adding to a pulp slurry at least one stabilizer for stabilizing low valency states of transition metal ions in the slurry; subsequently adding caustic soda to said slurry simul... | 02/21/2006 |
| 6946057 | Alkaline process for the manufacturing of pulp using alkali metaborate as buffering alkali The present invention relates to a new and environmentally sound process for the manufacturing of a chemical pulp from lignocellulosic material with an integrated recovery system for recovery of pulping chemicals. The process is carried out in several stages involvi... | 09/20/2005 |
| 6881299 | Refiner bleaching with magnesium oxide and hydrogen peroxide Methods of bleaching mechanical pulp under alkaline conditions with hydrogen peroxide. The methods include introducing a source of magnesium ions and hydroxyl ions to a refiner. The wood particulates are refined into a pulp in the presence of the magnesium ions and ... | 04/19/2005 |
| 6800319 | Accessing leaf and/or stem parts of plants The invention relates to the separation and of components from vegetable raw materials. The invention provides a method for separating components from vegetable material which has at least leaf and/or stem parts, characterized in that the material is at least partly... | 10/05/2004 |
| 6777103 | Fiber cement composite material using biocide treated durable cellulose fibers 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 i... | 08/17/2004 |
| 6770168 | Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals A substantially sulfur free process for the manufacturing of a chemical pulp with an integrated recovery system for recovery of pulping chemicals is carried out on in several stages involving physical and chemical treatment of lignocellulosic material in order to in... | 08/03/2004 |
| 6743332 | High temperature peroxide bleaching of mechanical pulps A method of making bleached mechanical pulps is disclosed for pulping mills having a primary and a secondary refiner. A first step is to provide cellulosic materials, such as wood chips to refine into the pulp; the wood chips have an initial brightness level. A seco... | 06/01/2004 |
| 6673211 | Apparatus for loading fibers in a fiber suspension with calcium carbonate An apparatus for loading fibers in a fiber suspension with calcium carbonate has a housing with an inlet and an accept outlet. A rotatable distribution member is positioned within the housing. A rotor and stator assembly is positioned within the housing r... | 01/06/2004 |
| 6666951 | Process for the production of articles from treated lignocellulosic particles and a formaldehyde based resin binder An improvement in the process for the production of articles from lignocellulosic material and a formaldehyde based resin binder comprising the step of treating the lignocellulosic material prior to combining it with the binder by exposing the lignocellul... | 12/23/2003 |
| 6428653 | Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide A process for final bleaching cellulose-containing pulp which has been subjected to previous bleaching with a peroxide compound. The process involves the sequential steps of exposing the pulp to an amount of a reducing agent in order to eliminate residual... | 08/06/2002 |
| 6419786 | Method for bleaching wood pulp containing recycled paper A method of treating wood-fiber pump, particularly wood-fiber pulp that contains recycled paper, comprises delivering the pulp to and advancing the pulp in a heating zone while delivering steam to the heating zone. The pulp is finely-divided in a disperse... | 07/16/2002 |
| 6340408 | Method of preparation of a fluffed pulp to be used in absorbent products A method for the preparation of cellulosic pulp capable of being defibrated (fluffed) for the manufacture of an absorbent material intended to be incorporated as a component in absorbent products. A stock of cellulosic fibres in aqueous suspension is pH-a... | 01/22/2002 |
| 6267841 | Low energy thermomechanical pulping process using an enzyme treatment between refining zones A low energy thermomechanical pulping process which employs an enzyme treatment stage between two low energy thermomechanical stages.... | 07/31/2001 |
| 6207009 | Method of treating mechanical pulp with a phenol-oxidizing enzyme system A process for producing paper or paperboard from mechanical pulp, in which the pulp is treated with a phenol-oxidizing enzyme after mechanical refining of the pulp has been completed. The resulting paper exhibits an increased strength relative to paper pr... | 03/27/2001 |
