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| Number | Title | Issue Date |
| 7300540 | Energy efficient TMP refining of destructured chips A system and method for thermomechanical refining of wood chips comprises preparing the chips for refining by exposing the chips to an environment of steam to soften the chips, compressively destructuring and dewatering the softened chips to a solids consistency abo... | 11/27/2007 |
| 7226525 | Process for producing very low COD unbleached pulp 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... | 06/05/2007 |
| 7081184 | Process for making a very low COD unbleached pulp A process for making a pulp product that has a low COD is comprised of soaking and washing pulp in alkaline water for a sufficient time so that the COD after soaking and washing is less than or equal to 2.0 kg/1000 kg of dry pulp. The process includes repetitively s... | 07/25/2006 |
| 7045027 | Method of producing a fiber board 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 ... | 05/16/2006 |
| 6902649 | Enhanced fiber additive; and use The disclosure provides a process of modifying a seed based fiber (SBF) to form an enhanced fiber additive (EFA). The process includes an acid treatment step and optionally at least one fiber modification step. Preferred EFA products and uses are described. ... | 06/07/2005 |
| 6425973 | Treatment of solid containing material derived from effluent 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 materia... | 07/30/2002 |
| 6245196 | Method and apparatus for pulp yield enhancement The process of the present invention purposefully precipitates a portion of the dissolved lignin onto pulp fibers to improve pulp yield of unbleached pulp. The resulting retention of lignin on the pulp creates an increase in pulp yield. Washing the pulp i... | 06/12/2001 |
| 5666703 | Apparatus for compressively treating flexible sheet materials Apparatus for longitudinal compressive treatment of a continuous web of material, comprising a cylindrical drive roll (100), a sheet form assembly (112, 114) to engage and press the web against the drive roll, and a sheet holder (200) for positioning the ... | 09/16/1997 |
| 5582682 | Process and a composition for making cellulosic composites 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 li... | 12/10/1996 |
| 5298122 | Measuring device and method for measuring the crosswise profile of a paper web A measuring bridge, fixed in place above a moving paper web and disposed crosswise to it, is provided, having a measuring head, movable back and forth--crosswise to the paper web--, for determining the measuring values for judging the thickness of the pap... | 03/29/1994 |
| 5188707 | Process for chemically hardening wood A method of hardening wood using a pulping agent for the chemical separation of lignin from cellulose in the wood without damage to either component. The pulping agent comprises the reaction product of (a) a compound produced by electrolytic oxidation of ... | 02/23/1993 |
| 5135612 | Methods for making exploded bark products A method for making a shaped product comprising exploded bark. Preferably the shaped product comprises exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, based upon the dry weight basis of the bark. One o... | 08/04/1992 |
| 5110414 | Procedure for manufacturing lignocellulosic material products A procedure for manufacturing lignocellulosic material products and for improving their strength and water resistance characteristics, high-molar mass lignin derivatives being added to the lignocellulosic material, of which at least 35% by weight are over... | 05/05/1992 |
| 5100511 | Method for the manufacture of products containing fibers of lignocellulosic material A method for the manufacture of products containing fibers of lignocellulosic material which involves the disintegration of a lignocellulosic material into fibers and forming and pressing of the fiber web into the product in question, which is preferably ... | 03/31/1992 |
| 4894217 | Process for causticizing of an aqueous solution containing alkali carbonate Process for causticizing a water solution containing alkali carbonate with calcium oxide and hydroxide by bringing the water solution containing alkali carbonate into contact with the calcium oxide or hydroxide and by separating the alkali hydroxide solut... | 01/16/1990 |
| 4517052 | Internal sizing with black liquid A portion of the spent cooking liquor from a pulping process is diverted from the washing step directly to the machine chest of a paper machine for pre-sizing the paper made on the paper machine. The preferred pulping process is an unbleached kraft or sul... | 05/14/1985 |
| 4347100 | Strength of paper from mechanical or thermomechanical pulp 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 bursti... | 08/31/1982 |
