Class 8/156 - Pulp or fibers (in bulk)

Subclass of Class 8 - Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
Definition: Processes for the treatment of pulp or fibers in bulk form.
No. of patents: 102
Last issue date: 04/29/2008

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Number	Title	Issue Date
7364032	Chip discharge system A chip discharge system with a fluid dispersing means which inhibits clogging, which has a simple structure, which can spray out a uniformly-spreading flow, and which can adjust the momentum of dispersing flow without requiring an additional device. ...	04/29/2008
7211293	Methods, systems and compositions for fire retarding substrates A closed-loop system and process is used for applying fire retardant chemicals to fibers. Fibers are preferably positioned in a vessel such as a dye machine which circulates the fire retardant chemicals. After absorption of the fire retardant composition, non-absorb...	05/01/2007
7197367	Household appliance comprising a control element and a display element The present invention relates to a household appliance including at least one control element and at least one display element, the control element(s) being able to be used to select programs of which, in each case, at least one program parameter is settable via the...	03/27/2007
7175907	Beneficiated fiber and composite A beneficiated fiber and composite including a fiber having a lumen with voids. A suspension including a bonding agent, chemical blowing agent, and catalyst is drawn into the lumen by a capillary action to beneficiate the fiber. The beneficiated fiber may be imbedde...	02/13/2007
7077931	Method and bleaching line with a main conduit for wash liquor The method is for bleaching cellulose pulp in a bleach line that has at least two bleaching steps. The filtrate distribution is led up through the bleaching line counter-currently to the flow of cellulose pulp established in the bleaching line. A single joint main c...	07/18/2006
7055697	System for separating fluid-borne material from a fluid that carries particulate matter along with the material A system for screening fluid-borne material from a fluid that carries particulate matter along with the material, e.g. for screening usable fibers in papermaking or tissue making white water that also contains waste material such as fines and ash. The system employs...	06/06/2006
6929715	Method and a device for measuring concentrations A method and a device for measuring concentrations especially in a pulp suspension, from which a sample has been taken. The sample is collected in a measuring vessel, in which a piston is guided upwards and downwards in order to press the sample from each direction ...	08/16/2005
6868973	Drum type refining or washing apparatus The present invention provides a drum type refining or washing apparatus in which the refining or washing efficiency of a pulp suspension or a food suspension is remarkably enhanced by the filtration function of a rotary drum and by the filtrate sucking force of a f...	03/22/2005
6789285	Pulp washing method and plant A method of improving the efficiency of the multistage washing of pulp, wherein the initial washing of a given batch of pulp is carried out using a gradually diluted, recovered filtrate fraction originating from the washing of the preceding batch of pulp as the wash...	09/14/2004
6752156	Humidification cylinder and method of humidifying material A humidifying cylinder includes a first rotatable cylinder having an inlet end and an outlet end and a plurality of first blades extending substantially radially outwardly from an exterior surface of the first cylinder. The humidifying cylinder further includes a se...	06/22/2004
6706876	Cellulosic pulp having low degree of polymerization values The present invention is directed to a pulp useful for making lyocell fibers. The pulp has a degree of polymerization from about 300 to about 1000; an alpha cellulose content of less than about 90% and in one instance can be made in a roll form. The degree of polyme...	03/16/2004
6553593	Plate diffuser for treating comminuted cellulosic fibrous material The problems of non-uniform treatment of paper pulp that may be caused by differential flow velocities within a vessel, channeling, and/or disruption of the pulp flow, are substantially eliminated by providing a non-circular cross-section substantially at...	04/29/2003
6521094	Device for the treatment of a fibrous suspension Device for the washing and dewatering a fibrous suspension, which device incorporates two hollow, circular cylindrical filter drums (1), which filter drums incorporate evacuation chambers inside the filter drums for evacuation of fluid. The filter drums r...	02/18/2003
6500211	Mutant EGIII cellulase, DNA encoding such EGIII compositions and methods for obtaining same The present invention relates to variant EGIII cellulases that have improved stability and/or performance. The variant cellulases have replacements at sensitive residues to improve stability and/or performance....	12/31/2002
6461473	Supply of washing liquid in a fractionating multi-stage washer A process for washing pulp including a dilution step, an extraction step and a subsequent displacement step. The process further includes the steps of: diluting the pulp; passing the diluted pulp to the extraction step; developing a first filtrate from th...	10/08/2002
6440265	FRP hood for paper processing plant An improved hood enclosure for isolating wood pulp washing equipment from the ambient environment. The hood has a pair of end members, a pair of skirts along each side to connect to the end member together, and an upper spine also connected at each end to...	08/27/2002
6440272	Device for mixing stock suspensions Process and device for the mixing of suspensions with possibly different natures and/or compositions in the stable section of a paper machine. In the process, a suspension, particularly of the backwater of the paper machine, is piped in a mixing tube with...	08/27/2002
6339859	Control system for a filtrate splitting device An adjustable splitter valve and control system for a pulp washing apparatus is provided that automatically regulates the filtrate flow from a pulp washer or thickener to control the filtrate characteristics such as volume, dissolved solids or suspended s...	01/22/2002
6302996	Method and apparatus for washing fiber pulp mixture The invention relates to a method of washing a fiber pulp mixture, in which method the fiber pulp mixture is fed between two filter wires running in the same direction. There is a convergent dewatering space in the direction of travel of the wires, where ...	10/16/2001
6272710	Plate diffuser for treating comminuted cellulosic fibrous material The problems of non-uniform treatment of paper pulp that may be caused by differential flow velocities within a vessel, channeling, and/or disruption of the pulp flow, are substantially eliminated by providing a non-circular cross-section substantially at...	08/14/2001
6200417	Process and device for mixing stock suspensions Process and device for the mixing of suspensions with possibly different natures and/or compositions in the stable section of a paper machine. In the process, a suspension, particularly of the backwater of the paper machine, is piped in a mixing tube with...	03/13/2001
6017416	FRP hood for paper processing plant An improved hood enclosure for isolating wood pulp washing equipment from the ambient environment. The hood has a pair of end members, a pair of skirts along each side to connect to the end member together, and an upper spine also connected at each end to...	01/25/2000
5960500	Stock washer for washing, thickening and classifying solids The apparatus is a washer, thickener and classifier for recovering solids from liquids including a truncated conical screen with walls typically sixty degrees from the horizontal and formed of filter media. Stock sprayer assemblies rotate about a longitud...	10/05/1999
5954841	Wool scouring The present invention provides an improved method for scouring wool. The method comprises differential heating of grease contaminants in the unscoured wool to at least partially liquefy the grease, absorbing the grease by the addition of a grease-absorbin...	09/21/1999
5842242	Method for increasing the consistency of pulp using a single roll displacment wash press A single roll wash press comprising a housing and a drum rotatably mounted within the housing. The drum includes a perforated outer wall and a longitudinally extending centerline axis and is rotatable about the axis. The press further comprises a means fo...	12/01/1998
5839142	Stock washer for washing, thickening and classifying solids The apparatus is a washer, thickener and classifier for recovering solids from liquids including a truncated conical screen with walls typically sixty degrees from the horizontal and formed of filter media. Stock sprayer assemblies rotate about a longitud...	11/24/1998
5837009	Method for the production of quality cotton yarns involving a low-cost process, free of environmental pollution A method for cotton purification is described, where the cotton is subject to a purification process in water. The process solution contains calcium hydroxide and a non-ionic detergent wetting agent. Following this processing the cotton is rendered hydrop...	11/17/1998
5771718	Concentrated washing machine The present invention provides a concentrated washing machine having a rotatable cylindrical drum made of punched metal. The drum has an inner surface lined with wire mesh and the drum is housed within a case body. A handle-shaped end plate, which is equi...	06/30/1998
5741399	Pulp washing method In a pulp washing method which employs a dilution stage, followed by an extraction stage, and followed, in turn by a dilution stage, filtrates from the extraction stage and the displacement stage are segregated so that at least a part of the filtrate from...	04/21/1998
5699573	Method and pulp washing machine for washing of pulp or any corresponding material In the pulp washing machine and method therefor, pulp to be washed is fed between the rotating drum and the pressing roll inside it, so that pulp passes along a spiral-formed track around the pressing roll, being thereby pressed several times. Washing liq...	12/23/1997
5688369	Method and device for feeding out fibre pulp The invention relates to a method and a device for feeding out fiber pulp over an overflow rim (2) at the upper end of a cylindrical container (1), through which the pulp, which is suspended in liquid, is being fed continuously from the bottom and upwards...	11/18/1997
5688759	Nitrogen-free anionic conditioning formulations Nitrogen-free anionic conditioning formulations containing sulfated polyol fatty acid esters corresponding to formula (I): ##STR1## in which R1 CO is a linear or branched, saturated or unsaturated acyl radical containing 6 to 22 carbon ato...	11/18/1997
5556508	Method for treating pulp A method for washing a fibre suspension including the steps of feeding the suspension into an annular displacement space, supplying a fluid through a permeable outer surface of the space, rotating the space to establish a fibre layer between the fluid sup...	09/17/1996
5509161	Impregnation procedure for a textile sheet The procedure for impregnating a woven or non-woven, knit, fiber sheet with an aqueous liquid, in particular of the kind containing a treatment agent, is characterized in that it consists of: (i) depositing the sheet 6 on a liquid-permeable, endless cloth...	04/23/1996
5444884	Controlling screen backflush and wash distribution in a pressure diffuser A pressure diffuser is constructed so that the compression of pulp that normally occurs during rapid movement of the screen assembly does not significantly degrade the efficiency of the washing (or other treatment liquid) action in the diffuser. This is a...	08/29/1995
5238501	Method for treatment of a fibrous material-fluid mixture The invention relates to a method and device for the washing of a medium consistency fibrous slurry, especially a chemical pulp slurry in which the slurry is fed at an inclined angle onto a substantially horizontal portion of circulating filter belt, and ...	08/24/1993
5221434	Method for treating fiber suspensions A method and apparatus for the treating of fiber suspensions in the pulp and paper industry and particularly to a method and apparatus for washing fiber suspensions. The method is characterized in that the fiber suspension is fed into the treatment appara...	06/22/1993
5203045	Nozzle mounting in atmospheric diffusers Nozzle breakage in an atmospheric diffuser for treating paper pulp is precluded by mounting the nozzle to the rotating scraper arm by a connection which will break when the nozzle is subjected to a drag force of about 50% of the force that will break the ...	04/20/1993
5183536	Atmospheric diffuser improved lower screens backflushing In an atmospheric diffuser for the treatment of paper pulp (thickening, bleaching, and/or washing) the flow of backflushing liquid is controlled so as to maximize the effective treatment of the pulp. The pulp passes upwardly in a vessel. A number of annul...	02/02/1993
5129119	Diffuser efficiency The efficiency of a diffuser, for washing or bleaching paper pulp, is enhanced by taking steps to ensure that the approximate upstroke speed is only slightly faster than the pulp upflow velocity, to provide an early warning indication of the tendency of t...	07/14/1992

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Class 8/156 - Pulp or fibers (in bulk)