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| Number | Title | Issue Date |
| 8444821 | Measuring of web Optical radiation sources functioning on different optical bands radiate on different optical bands and focus optical radiation on a region in a web surface as pulses in such a manner that illumination areas of the pulses overlap on the plane of the web. At most one... | 05/21/2013 |
| 8372245 | Roll assembly for a fiber-web machine and method of attenuating vibration of a fiber-web machine roll A roll assembly (10) for a fiber-web machine has at least at one end thereof, with a bearing assembly (20) with a bearing housing, which bearing housing (18) has a flexible and attenuating attachment arrangement by means of which the roll can be... | 02/12/2013 |
| 8349136 | Method for optimizing the energy balance in forming sections in machines for the production of fibrous webs, and forming section The invention relates to a method for optimizing the energy balance of a forming section in a machine for producing fibrous webs, in which a fiber suspension, which is fed to the forming section by way of a material ramp after the immobility point is reached, is pas... | 01/08/2013 |
| 8206554 | Method and a system for controlling the manufacturing or finishing process of a fiber web A method and a system for controlling the manufacturing or finishing process of a fiber web at a transition stage of the process. In the method a corrected error profile (PD′k) is formed using an error profile (PD). Using the corre... | 06/26/2012 |
| 8187424 | Time domain spectroscopy (TDS)-based method and system for obtaining coincident sheet material parameters An in-situ time domain spectroscopy (TDS)-based method (200) for non-contact characterization of properties of a sheet material while being produced by a manufacturing system (700). A time domain spectrometry system (100) and calibration data fo... | 05/29/2012 |
| 8133356 | Method of monitoring microbiological deposits A method for monitoring one or more deposits including microbiological deposits on a surface immersed in an aqueous medium of a process is disclosed. The method comprises: (a) providing a QCM that is in contact with an aqueous medium, wherein said QCM has a top side... | 03/13/2012 |
| 8092650 | Method for producing or treating a fibrous web This invention relates to a method for producing or treating a fibrous web, in particular a paper web or paperboard web, with which at least one property of the fibrous web, in particular a CD (cross direction) profile, such as the moisture CD profile, is establishe... | 01/10/2012 |
| 8080131 | Device and method for measuring the velocity of a moving paper web Device for measuring the two-dimensional velocity of a moving paper web having opposed first and second surfaces, wherein comprising: at least one light source directed at said first surface and arranged to transmit light through said paper web; at least one image c... | 12/20/2011 |
| 7964064 | System and method to control press section dewatering on paper and pulp drying machines using chemical dewatering agents The present invention provides an automatic control system, method and paper manufacturing machine using such control system for automatically controlling the amount of press section dewatering via the metered application of chemical dewatering agents applied to a p... | 06/21/2011 |
| 7959763 | Apparatus and method for correcting basis weight measurements using surface topology measurement data An apparatus and method for correcting an areal weight measurement of a stretchable web using surface topology measurement data is disclosed. Areal weight may comprise a basis weight or a water weight. The apparatus measures a surface of the stretchable web with a b... | 06/14/2011 |
| 7938935 | 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. Dif... | 05/10/2011 |
| 7909963 | Method for measuring hydrophobic contaminants in paper pulp A method is provided for measuring hydrophobic contaminants distributed in paper pulp suspension. The method comprises: adding a fluorescent dye (18) to the paper pulp suspension (12) including fibers and hydrophobic contaminants, the dye (18) i... | 03/22/2011 |
| 7842165 | Enhanced method for monitoring the deposition of organic materials in a papermaking process A method for monitoring the deposition of one or more organic materials dispersed in an aqueous medium in a papermaking process comprising: measuring the rate of deposition of the organic materials from the aqueous medium on-to a quartz crystal microbalance having a... | 11/30/2010 |
| 7837833 | 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×... | 11/23/2010 |
| 7811414 | Method and system in a paper machine and software product The invention comprises a method and a system in a paper machine, and also a software product, allowing one or more tools to be generated for indicating the state of the paper production process in terms of energy consumption to the operating staff of the paper mach... | 10/12/2010 |
| 7799172 | Apparatus for measuring tension in paper web Apparatus for measuring tension or a tension alteration in a paper web. At least one measurement device includes a number of measurement bodies and a number of fluid supply devices, which are intended to apply a fluid pressure to the web. The fluid supply devices ar... | 09/21/2010 |
| 7799171 | Reeling method and system as well as an measuring apparatus A method and a system to control a reeling profile of a material web reel (30), when, in the forming of a material web reel (30), a web is reeled around a reeling core and when in an adjustment of CD-directional profiles of the web reel, profiling devi... | 09/21/2010 |
| 7780817 | Measurement system for improved paper roll runnability A method for measuring both caliper and tension of a web such as paper wound into a roll. The method may include a standard caliper sensor whose air supply is selectively modified to allow for both the measurement of caliper and tension of the web. In another embodi... | 08/24/2010 |
| 7763148 | Method and apparatus for producing a fibrous web Disclosed is a method for producing a fibrous web, in particular a paper web, paperboard web or tissue web, with which a material flow of higher consistency and a material flow of lower consistency are mixed in a variable ratio over the machine width and the mixed f... | 07/27/2010 |
| 7695592 | Method and apparatus for measuring fiber orientation of a moving web An image-based measurement technique that directly measures the orientation of fibers in a moving web that comprises nonwoven material measures the orientation angles of the individual fibers so that a more robust estimate of the statistical distribution of fibers i... | 04/13/2010 |
| 7682488 | Method of making a paper web containing refined long fiber using a charge controlled headbox A method of forming a cellulosic web is discussed, the product of which may, for example, possess at least one of increased softness, strength, and absorbency. The method measures the total anionic charge and controls the net charge of an aqueous stream. ... | 03/23/2010 |
| 7674355 | Method of measuring macro and micro stickies in a recycled sample containing pulp fibers A method of measuring macro and micro stickies in a recycled sample containing pulp fibers is disclosed. The method includes forming a slurry of the recycled macro stickies and a liquid and using a first separation device to separate out the macro stickies and the p... | 03/09/2010 |
| 7618517 | Method and apparatus for monitoring liquid and solid contents in a froth A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation operation. Specifically, electrodes are immersed in the froth generated ... | 11/17/2009 |
| 7608169 | Apparatus and method for break recovery in a paper machine or other system A method includes determining one or more setpoint changes for one or more actuators in a process control system. Determining the one or more setpoint changes includes making larger or more frequent setpoint changes when operating in a first mode and making smaller ... | 10/27/2009 |
| 7582189 | Method for optimizing production of paper or board The invention relates to a method in the manufacture of a fiber-based web-like product for optimizing the operation of the process being used, in which method quality factors are defined for the product being manufactured control variables, which affect the state of... | 09/01/2009 |
| 7566382 | Method and arrangement for controlling short circulation in a paper machine or the like A method and arrangement for controlling short circulation in a paper machine, in which the control of at least one property of the diluted fiber-containing pulp conducted to the headbox is based on consistency measurement or determination in high-consistency fiber-... | 07/28/2009 |
| 7556714 | Method of operating a papermaking process A method of operating a papermaking process containing a press section with at least one press nip is disclosed. The method comprises simultaneously performing the following steps: (a) providing a press media for said papermaking process that has a MFP size that is ... | 07/07/2009 |
| 7510629 | Method and device for analysing surface structure in paper or board A method for analyzing in real-time in a paper machine or board machine the surface structure of a web (1) of paper or board which method comprises the direction of an imaging system towards a pre-determined area (3) of the web (1), the arrangem... | 03/31/2009 |
| 7506550 | Apparatus and method for assessing the condition of at least one circulating band in a paper machine The invention relates to an apparatus for assessing the condition of at least one circulating band in a papermaking machine including a permeability measuring device, a moisture measuring device, a fiber web moisture measuring device, an evaluator, a reel-up and an ... | 03/24/2009 |
| 7473335 | Apparatus and method for monitoring the transfer of a material web A machine for producing and/or treating a material web, in particular of paper or board, in which the material web can be guided along a material web guide path by means of at least one material web guide device from a material web production section or material web... | 01/06/2009 |
| 7459060 | Reverse bump test for closed-loop identification of CD controller alignment A reverse bump test, for identifying the alignment of a sheetmaking system while the system remains in closed-loop control, includes the following steps: (a) leaving the control system in closed-loop, (b) artificially inserting a step signal on top of the measuremen... | 12/02/2008 |
| 7435314 | Method for the production of a fibrous web In a method for the production of a fibrous web, especially a paper or cardboard web, an automatic ash control system and an automatic retention control system for the reduction or suppression of an interactive build-up of the two controls are linked via a model for... | 10/14/2008 |
| 7431800 | Device and method for on-line control of the fibre direction of a fibre web A device and a method for on-line control of the fibre direction of a fire web (8), being manufactured from stock delivered from a headbox (3) through a discharge opening (11) defined by movable lips (9, 10), while using a fibre direction... | 10/07/2008 |
| 7419571 | Method for controlling the temperature of a cellulosic web entering a dryer The invention relates to a method for controlling the temperature of a web, which is formed from cellulosic pulp and is to be passed to a dryer, by way of applying temperature-controlled liquid to the web. According to the invention, the thus formed web is passed in... | 09/02/2008 |
| 7407562 | Method, system and calendar for controlling the moisture profile and/or moisture gradient of a paper web, and a web The moisture profile and/or moisture gradient of a paper web of at least SC quality paper is controlled in a paper machine comprising a calender (1) which has at least two roll stacks (21, 22; 31, 32), one stack has at least three rolls and another has... | 08/05/2008 |
| 7399380 | Jet velocity vector profile measurement and control In a papermaking system having a headbox to dispense a jet of liquid and paper forming fibers, an improvement comprising at least one sensor arrangement for simultaneously or sequentially measuring in at least one location the jet velocity or jet flow correlation of... | 07/15/2008 |
| 7396437 | Method and system for controlling the web formation Method and system for controlling web formation in the forming section of a paper machine includes measuring the amount of white water occurring during drainage in at least one drainage region of the forming section; and carrying out the web formation control on the... | 07/08/2008 |
| 7390379 | Method and apparatus for determining the lateral position of a web or fabric edge in a former The lateral position of a web or fabric edge 11 in a paper machine is determined using an ultrasonic sensor. The ultrasonic sensor has a detector head 42, with an air channel system which opens to the vicinity of the head for forming an air knife which... | 06/24/2008 |
| 7384503 | Determination of contaminant particles in an aqueous pulp A method and system for determining trace oversize contaminant particles in a paper-making pulp employs a screen assembly having a screen housing with a screen mounted therein, and ports for introduction of aqueous pulp and rinsing and flushing fluids, and for withd... | 06/10/2008 |
| 7384508 | Apparatus and method for draining water from a cellulose web An apparatus and a method are provided for draining water from a cellulose web which is formed in a wedge-shaped space defined by two wires, the wires being supported on chamber assemblies including at one time at least one water receiving chamber, the water flowing... | 06/10/2008 |
