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| Number | Title | Issue Date |
| 8075735 | System and method for the separation of bast fibers The present invention relates generally to the timber products industry, and particularly to methods and apparatus for the separation of bast fibers. More particularly, the present invention relates to methods and apparatus for use in the separation of inner core fr... | 12/13/2011 |
| 7384502 | Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness Wood chips having low bleachability are impregnated with a chemical liquor at a pH range of 7-12 in aqueous solution and the chemical liquor from the impregnated chips is drained, whereby extractives contained in the chips and consuming bleaching agents can be remov... | 06/10/2008 |
| 7364640 | Chemimechanical desilication of nonwood plant materials A process for removing silica from nonwood plant materials involving both chemical and mechanical action is described. The silica-rich epidermal cells are liberated mechanically by a pre-pulping and low-consistency refining step and subsequently removed from the pul... | 04/29/2008 |
| 7351764 | Methods to enhance brightness of pulp and optimize use of bleaching chemicals Mechanical or Chemical pulp is treated with about 0.01 weight % to about 5 weight % of a Mixture. The Mixture is water; diethylenetriaminepentakis(methyl)phosphonic acid or its known salts; polyacrylic acid or its known salts; and optionally one or more inert compou... | 04/01/2008 |
| 7314538 | Process and device for discharging lignocellulose raw materials from a digester and conveying the raw material to a refiner A process for refining lignocellulose raw materials, especially wood chips, saw dust, annual plants or wood waste, includes dewatering the lignocellulose raw materials discharged from a digester, extracting condensate produced during dewatering, and refining the dew... | 01/01/2008 |
| 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 |
| 7094317 | Process of manufacturing and using highly refined fiber mass The present invention comprises an improved method for refining cellulose that produces a highly refined cellulosic material. The method comprises soaking raw material from primarily parenchymal cell wall structures in an aqueous solution which need not contain an a... | 08/22/2006 |
| 7077930 | Method for controlling screening by measuring flow amount consistency of the pulp The invention relates to a method of controlling quality of pulp. Pulp formed in mechanical defibering of wood is screened into at least two fractions, the accept that has passed the screening phase being forwarded for further use and the reject that did not pass th... | 07/18/2006 |
| 7074300 | Cellulose fiber-based compositions and their method of manufacture The present invention comprises an improved method for refining cellulose that produces a highly refined cellulosic material. The method comprises soaking raw material in a mild NaOH using reduced temperatures and pressures, and refining the material with a plate re... | 07/11/2006 |
| 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 |
| 6752904 | Process for removal of lignin from lignocellulosic material The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a high-yield pulping process with a delignifying gas comprising gaseous compounds compris... | 06/22/2004 |
| 6632326 | Modifying method for wood elements The present invention's modifying method for wood elements includes a step for soaking wood elements in one or a mixture of acetic anhydride, acetic acid, or chloroacetic acid; and a step for acetylating the impregnated wood elements in a gaseous phase. T... | 10/14/2003 |
| 6312669 | Buccodental formulation comprising essentially amorphous cellulose nanofibrils The invention concerns buccodental formulation characterized in that it comprises at least a thickening agent comprising cellulose nanofibrils, said cellulose nanofibrils being substantially amorphous, having a crystallinity index not more than 50%. The i... | 11/06/2001 |
| 6258207 | Alkaline peroxide mechanical pulping of non-woody species High-yield chemimechanical lignocellulosic pulp is produced from non-woody species by cutting and screening the non-woody species, soaking them in an acidic aqueous solution preferably containing a chelating agent, treating the washed non-woody species wi... | 07/10/2001 |
| 6214164 | Process for pretreating wood chips for pulping The invention relates to a process and apparatus for pretreating pulp raw material, to be subsequently prepared in a chemical pulping process, and for preparing cellulose pulp from a fibrous starting material. According to the process the starting materia... | 04/10/2001 |
| 5964983 | Microfibrillated cellulose and method for preparing a microfibrillated cellulose A microfibrillated cellulose containing at least around 80% of primary walls and loaded with carboxylic acids, and a method for preparing same, in particular from sugar beet pulp, wherein the pulp is hydrolysed at a moderate temperature of 60-100° C.; at... | 10/12/1999 |
| 5718802 | Process for obtaining cellulosic fiber bundles at least 2.5 cm long from plant stalk rind Novel fiber bundles may be produced as a by-product of sugar cane or other plants. These fiber bundles may be spun into a yarn, or formed into a non-woven mat. The non-woven mat is useful, for example, as a biodegradable geotextile for inhibiting erosion ... | 02/17/1998 |
| 5203962 | Method of manufacturing and utilizing cellulosic fiber identification tags for wooden articles Identification and inventorying of logs, particularly those to be made into paper pulp, is provided utilizing a cellulosic fiber (paper) based identification tag. The tag is printed, as by ion deposition, with variable information, such as bar coding and ... | 04/20/1993 |
| 4756799 | Method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a one-stage impregnation process In accordance with the invention a chemimechanical pulp is produced from lignocellulosic material, for example wood chips, by subjecting the material to a process in which it is steamed, impregnated with alkali and peroxide, drained, pre-heated, refined a... | 07/12/1988 |
| 4017356 | Apparatus and method for manufacturing wood pulp by grinding wood block material An improved apparatus and method for manufacturing ground wood pulp from ligno-cellulose containing wood block material by forcing the block material to be ground against the end surface of a rotatably mounted grinding disc which has projecting grinding m... | 04/12/1977 |
| 4014788 | Removing of bark fines from aqueous suspensions In the manufacture of wood pulp for use in making paper and other wood fiber products, it is first necessary to remove the bark from the logs. While this can be done using a dry process, a wet process offers many advantages. However, one big disadvantage ... | 03/29/1977 |
