Paper making and fiber liberation inventions 04/09

20090107642 - Method for oxygen delignification of cellulose pulp at high pressure in several steps: The method is for the improved oxygen delignification of cellulose pulp with a medium consistency of 8-16%. The fraction of dissolved oxygen can be maintained at a high level throughout the process by the use of high pressure, greater than 15.0 bar, and by repeated agitative mixing while maintaining the... Agent: James Earl Lowe, Jr.

20090107643 - Method for mechanical pulp production: A method of producing hardwood pulp is provided. This method comprises treating hardwood chips with one or more than one Family 11 xylanase enzyme in the absence of adding an oxidizing enzyme for about 5 minutes to about 120 minutes, to produce a treated chip mixture. The treated chip mixture... Agent: Cooley Godward Kronish LLP Attn: Patent Group

20090107644 - Dry strength system for the production of paper and board: The instant invention relates to certain cross-linked polyamides and their use in the paper and board industry for improving dry strength. The polyamide from the reaction of a di- or tri-primary amine with a di- or tri- or tetra carboxylic acid is further reacted with a di- or tri-functional cross-linking... Agent: Clariant Corporation Intellectual Property Department

20090107645 - Process for the production of a paper and a paper produced according to the process: A process for producing paper from a furnish comprising fillers and fibers, wherein the furnish is treated with polymers in at least three steps and said furnish contains fillers in such an amount that the paper product obtained by the process contains at least 15% by weight of fillers. The... Agent: Greer, Burns & Crain

20090101294 - Process for making bamboo fiberfill and articles thereof: A process for producing bamboo fiberfill from raw bamboo fiber includes, obtaining a bale of the raw bamboo fiber, picking up and separating the raw bamboo bale fiber into tufts of bamboo fiber with a bale opener, feeding the bamboo fiber tufts into a blending hopper configured to blend the... Agent: Cantor Colburn, LLP

20090101295 - Self-bonding polypridobismidazole pulp and a process for making same: The invention concerns a fibrous pulp comprising polypyridobisimidazole fiber, the pulp having a Canadian Standard Freeness (CSF) of no more than about 650 ml, a specific surface area of from 0.5 to 50 square meters per gram, a length-weighted average length of from 0.5 to 2.0 mm, and a equilibrium... Agent: Griffith John E E I Du Pont De Nemours And Company

20090101296 - Near neutral chlorine dioxide bleaching of pulp: Final chlorine dioxide bleaching of lignocellulosic materials is most effective at a near-neutral pH but present industrial practice typically targets a final pH of between 3.5 and 4.0 because of the difficulty in achieving and maintaining near-neutral pH cost effectively. The in situ formation of bicarbonate before the addition of... Agent: Ogilvy Renault LLP

20090101297 - System and method for characterizing fibrous materials using stokes parameters: An apparatus (200) for determining fiber orientation parameters of a sheet of material during a production process includes a polarized radiation generating system (201, 202) operable for providing polarized radiation having a frequency of at least 1×108 Hz. The radiation is aligned to be incident on a sheet of material... Agent: Honeywell International Inc.

20090101298 - Arrangement for the treatment of cellulose pulp: A washing arrangement for washing and dewatering cellulose pulp is disclosed, comprising at least one rotary cylindrical element, against which the pulp is dewatered, and where a seal is located in an end seal holder, so that the seal has a contact surface against the rotary cylindrical element and an... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20090101299 - Apparatus and method for monitoring the transfer of a material web: A machine, for at least one of producing and treating a web of fibrous material in which the web is guided along a web guide path by at least one web guide device from one of a web production section and a web input section to pass at least one... Agent: Taylor & Aust, P.C.

20090095430 - Treatment vessel for straw or other light bulky material: A method to chemically treat light weight, bulky cellulosic material including: introducing the material to an upper inlet of a substantially vertical treatment vessel; maintaining the material in the vessel at a pressure of at least 20 bar and at a temperature of at least 200° C.; treating the material... Agent: Nixon & Vanderhye, PC

20090095431 - Paper-sizing emulsion, process for preparing it and use thereof: Aqueous paper-sizing emulsions for bulk and surface sizing with a content of fatty acid anhydrides are described in which the fatty acid anhydrides are derived from unsaturated or saturated fatty acids or their mixtures with chain lengths of C12-C24 and are liquid under 50° C. The paper sizing emulsions additionally... Agent: Cantor Colburn, LLP

20090095432 - Infrared measurement of paper machine clothing condition: Infrared spectroscopy techniques are employed to measure (i) the moisture level in both the sheet of wet stock and the papermaking machine clothing on which the sheet is supported and (ii) the moisture level in the clothing alone as a separate layer of material. Differential measurement thus yields the moisture... Agent: Honeywell International Inc.

20090095433 - Wet paper web transfer belt: A wet paper web transfer belt comprises a base body 30, a paper side layer 20, and a machine side layer 23. The paper side layer 20 is composed of a paper contacting side batt layer 21 made of hydrophilic fibers 41 and a base bode side batt layer 22... Agent: Howson & Howson LLP

20090090477 - Feeder: A fluid transfer apparatus for bulk material is disclosed. The transfer apparatus includes a rotor mounted on a rotatable shaft and including axially extending flow channels extending through the rotor parallel to the shaft, flow connectors for connecting a low-pressure flow of fluid and a high-pressure flow of fluid into... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20090090478 - Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen: A process to enhance delignification or bleaching in chemical or mechanical pulps comprising generation of singlet oxygen as a separate step and subsequent transport of singlet oxygen to pulp to effect bleaching or brightening of the pulp.... Agent: Joanne Mary Fobare Rossi Hercules Plaza

20090084509 - Dissolution of cellulose in mixed solvent systems: A method for dissolving cellulose in which the cellulose based raw material is admixed with a mixture of a protic intercrystalline swelling agent and an ionic liquid at a temperature of 25° C. to 180° C. for a time sufficient to dissolve the cellulose based raw material. The molar ratio... Agent: Weyerhaeuser Company Intellectual Property Dept., Ch 1j27

20090084510 - Methods to detect organic contaminants in pulp and fiber: A method to detect organic contaminants in pulp and fiber is described which uses hydrophobic dyes, such as fluorescent dyes.... Agent: Kilyk & Bowersox, P.l.l.c.

20090084511 - Method and apparatus for processing wood chips: A method and an apparatus for processing wood chips, wherein the wood chips are treated with steam in a gas removal apparatus. The condensate formed in the gas removal apparatus is removed from the gas removal apparatus and the wood chips are treated with a processing solution in order to... Agent: Stiennon & Stiennon

20090084512 - Process to produce substrate resistant to alkaline starch: A process for producing a substrate having a surface that is resistant to adhesion of alkaline starch wherein a coating composition comprising a fluorosilicone and a solvent is applied to the surface of the substrate. The process is particularly applicable with substrates which are components of paper machines, such as... Agent: E I Du Pont De Nemours And Company Legal Patent Records Center

20090084513 - Fibrous structures and methods for making same: Fibrous structures that exhibit improved consumer recognizable properties, especially a VFS of greater than about 11 g/g, and to methods for making such fibrous structures are provided.... Agent: The Procter & Gamble Company Global Legal Department - Ip

20090084514 - Use of pre-coated mat for preparing gypsum board: A gypsum board which comprises a set gypsum core sandwiched between and faced with fibrous mats, wherein a free surface of one of said mats is pre-coated with a combination of a mineral pigment, optionally an inorganic adhesive binder and an organic binder, preferably a hydrophobic, UV resistant polymer latex... Agent: Patent Group Ga030-43 Georgia-pacific LLC

20090084515 - Paper pulp mold and pulp molded articles thereof: 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... Agent: Bacon & Thomas, PLLC