| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 162198000 | With measuring, inspecting and/or testing | 32 |
| 20080210396 | Measurement System for Improved Paper Roll Runnability - A system for measuring both caliper and tension of a web such as paper wound into a roll. The system 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 embodiment two similar or identical measurement devices are installed in tandem where one device measures tension without pinching the sheet and the other device measures caliper. The sensor may include two sheet guides for providing support for tension measurement or one or both sheet guides can be eliminated by support from machinery rolls. | 09-04-2008 |
| 20080223537 | Method and apparatus for selective folding or redirecting - The present disclosure relates to a method for redirecting cut web products and/or rejecting cut web products. The method comprises advancing a plurality of cut web products along a first path and providing a redirecting or folding device for folding the plurality of cut web products and/or delivering the folded cut web products to a second path. Prior to reaching the folding device, the cut web products may be determined to be defective. The folding device can be accelerated, decelerated, or substantially stopped, such that a selected cut web product is not delivered to the second path, thereby rejecting the selected cut web product. The present disclosure additionally comprises an apparatus for redirecting and/or rejecting cut web products. | 09-18-2008 |
| 20080245495 | Apparatus for Measuring Tension in a 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 are so arranged as to subject the web to an essentially constant fluid pressure in order to provide a fluid cushion between the web and the measurement bodies. The measurement bodies are so arranged as to apply pressure to the web without making contact and are so arranged to be capable of displacement. The position of the measurement bodies in the normal direction of the web is altered depending upon variations in the constitution of the web. A method for measuring web tension and a machine including apparatus for measuring web tension are also disclosed. | 10-09-2008 |
| 20080308244 | CONTAMINATION DEGREE DETERMINING APPARATUS AND CONTAMINATION DEGREE DETERMINING METHOD - A contamination degree determining apparatus for paper determines a final contamination degree of paper on the basis of values of various contamination characteristics indicating the degrees of, for example, creases, wrinkles or stains obtained from the paper. Values of a plurality of contamination characteristics are input to the contamination degree determining apparatus for paper. The apparatus calculates a plurality of evaluation values from the plurality of input contamination characteristics, the contribution degree of each of the plurality of contamination characteristics, reference vectors reflecting the distribution of the plurality of contamination characteristics, and dispersion parameters reflecting the distribution of the plurality of contamination characteristics. The apparatus determines the final contamination degree of the paper on the basis of the calculated evaluation values and the weight of each of the evaluation values. | 12-18-2008 |
| 20090056897 | 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 top side contacting with the aqueous medium coated with a layer containing a non-swelling epoxy resin or a silicon containing polymer, and a second, bottom side isolated from the aqueous medium is disclosed. Additionally, a method for measuring the effectiveness of an inhibitor that decreases the deposition of the organic materials in a papermaking process is also disclosed. | 03-05-2009 |
| 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 content of the sheet of wet stock alone. Changes in the moisture level in the clothing at the press section can be correlated with corresponding changes in the quality or physical property of the paper produced. Both fixed point and scanning IR sensors are strategically positioned in the press section to generate machine direction and/or cross machine direction water profiles for process control. | 04-16-2009 |
| 20090101297 | SYSTEM AND METHOD FOR CHARACTERIZING FIBROUS MATERIALS USING STOKES PARAMETERS - An apparatus ( | 04-23-2009 |
| 20090188641 | METHOD AND SYSTEM FOR MEASURING AND CONTROLLING DIGESTER OR IMPREGNATION VESSEL CHIP LEVEL BY MEASURING CHIP PRESSURE - A method and system for determining chip pressure in a vessel containing a slurry of lignocellulosic material including: sensing a total static pressure of the slurry in the vessel; sensing a hydrostatic pressure of the liquor in the vessel, and determining the chip pressure based on a difference of the sensed total static pressure of the slurry and the sensed hydrostatic pressure of the liquor. | 07-30-2009 |
| 20090199987 | METHOD FOR DEWATERING AND A DEWATERING APPARATUS - This invention relates to a dewatering apparatus, in particular a paper machine or a paperboard machine, for the adjustable, and controllable dewatering of a fibrous material, which is conveyed as a fibrous web that can be divided into at least two zones arranged side by side in a cross direction (CD). The dewatering apparatus is characterized in that the dewatering of the fibrous material is adaptable to a dewatering curve defined in a machine direction on the basis of measurements of the water weight of the fibrous material taken by at least two water weight sensors, in particular a one-dimensional or multi-dimensional sensor arrangement of water weight sensors, which are assigned to a zone and arranged preferably in pairs in mutually offset position in the CD direction. | 08-13-2009 |
| 20090205796 | 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 basis weight measuring device to obtain a rough basis weight measurement. The apparatus then measures the surface of the stretchable web with a surface topology measuring device to obtain surface topology measurement data. The apparatus comprises a controller that corrects the rough basis weight measurement of the stretchable web using surface topology measurement data. The corrected basis weight measurement may be used as a feedback value in a real time manufacturing process of the stretchable web. | 08-20-2009 |
| 20090242155 | METHOD AND APPARATUS FOR PAPER STOCK MIXING - A method of mixing paper stock, having improved outlet consistency, includes: (a) feeding liquid and feeding paper pulp into a vessel to form a mixture; (b) providing at least one counterflow impeller that is submerged in the mixture, the counterflow impeller being capable of simultaneously inducing both upward flow and downward flow; (c) rotating the counterflow impeller such that downward flow from the impeller is partially recirculated by upward flow from the impeller to form a mixing zone; (d) sensing a parameter of the mixture discharged from the vessel; and (e) controlling the feed rate of the liquid and the feed rate of the paper pulp in the feeding step (a) based on the sensing step (d). An apparatus for mixing of paper stock, having improved outlet consistency, includes a vessel for containing liquid and paper pulp, at least one counterflow impeller, and a feedback system for controlling outlet consistency. | 10-01-2009 |
| 20100024999 | TIME DOMAIN SPECTROSCOPY (TDS)-BASED METHOD AND SYSTEM FOR OBTAINING COINCIDENT SHEET MATERIAL PARAMETERS - An in-situ time domain spectroscopy (TDS)-based method ( | 02-04-2010 |
| 20100043993 | 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 (P | 02-25-2010 |
| 20100139880 | WIRELESS MOISTURE MEASUREMENT FOR THE ROLL COATINGS OF FIBER WEB MACHINES AND MEASURING EQUIPMENT - The various embodiments of the invention are connected to a radio-frequency identifier of the roll coating in a fiber web machine. The fiber web machine comprises a radio-frequency identifier (for example RFID, RFID-tag), so that the moisture content can be measured from the roll or from the roll coating of a fiber web machine. | 06-10-2010 |
| 20100163201 | APPARATUS AND METHOD FOR SIZING TESTING - A method of measuring a Stockigt sizing degree of a paper or hoard is provided. The method includes: placing a paper or board, to which FeCl | 07-01-2010 |
| 20100181039 | 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 capturing device directed at said second surface, and arranged to receive said transmitted light and produce a two-dimensional image of a section of said paper web; a control unit, arranged to control said at least one light source and at least one image capturing device, and to receive two-dimensional images from said at least one image capturing device, and comprising computation means arranged to compute the velocity component of said paper web in the machine direction and/or the cross direction by calculating the cross correlation of two two-dimensional images. | 07-22-2010 |
| 20100269996 | METHOD OF DETECTING AND REDUCING CONTAMINATION IN PAPERMAKING BOILER SYSTEMS - This invention relates to a method and system for detecting contamination of boiler condensate and/or boiler feedwater in a papermaking process. The method includes measuring an oxidation-reduction potential at one or more locations in the boiler condensate and/or the boiler feedwater of the papermaking process with one or more corrosion stress monitoring devices. A controller is operable to assess whether the measured or a calculated oxidation-reduction potential is within an optimum range. The controller is operable to cause transmission of a signal to direct feeding an effective amount of one or more reductants and/or one or more pH-controlling chemicals into the boiler feedwater and/or one or more a satellite feed locations of the papermaking process. | 10-28-2010 |
| 20110132561 | METHOD AND DEVICE FOR DETECTING AT LEAST ONE VARIABLE AT LEAST INDIRECTLY CHARACTERIZING THE PROPERTIES OF A SURFACE IN A MATERIAL WEB TREATMENT DEVICE AND METHOD FOR OPTIMIZING THE OPERATING METHOD OF A MATERIAL WEB TREATMENT DEVICE - A method for detecting at least one value at least indirectly characterizing the properties of a surface in a material web treatment device. The method includes the steps of illuminating the surface at least at two measuring points with at least one emission source, simultaneously detecting at least one value at least indirectly characterizing a reflectivity of the surface at said each of the at least two measuring points with a detector device and evaluating the reflectivity. | 06-09-2011 |
| 20110214829 | METHOD FOR COMPENSATING FOR FAULTS IN A PAPER WEB - Method for compensating for uneven shrinkage in a paper web in the press and drying sections of a paper machine, in which there is at least one open draw. In the method, a flow guide/guides are used in the head box, by means of which the machine direction orientation tendency of the fibres is reduced in the edge areas of the web and the angle of detaching of the web from the centre roll is adjusted, by directing onto the web an air jet that is located in the cross direction and the pressure of which can be adjusted in the said direction. | 09-08-2011 |
| 20110226434 | METHOD FOR GUIDING WEB PATCHING USING A RE-REELER AND A CORRESPONDING SYSTEM - A method for guiding web patching, using a re-reeler, in connection with a paper machine and an off-line coating machine, in which method a defect map of the web is created on the paper machine, to show deviations some of which are shown on the coating machine, using selected criteria, to the operator, the deviations being patched using the re-reeler, guided by the defect map and preset patching rules. On the coating machine, the virtual location of the selected deviations is monitored through the coating machine and if a possible web break occurs, a deviation is localized relative to the web break, and on the basis of this monitoring, feedback is provided to the patching rules of the re-reeler, in order to optimize them. | 09-22-2011 |
| 20110284178 | APPARATUS AND METHOD FOR CONTROLLING CURLING POTENTIAL OF PAPER, PAPERBOARD, OR OTHER PRODUCT DURING MANUFACTURE - A method includes receiving a measurement associated with an anisotropy of a first surface and a measurement associated with an anisotropy of a second surface of a sheet of material. The method also includes adjusting an operating parameter associated with a headbox based on the measurements. The headbox is associated with manufacture of the sheet. The operating parameter could include a jet speed, a jet impingement angle, a jet thickness, a slice opening, and/or a slice apron projection. Adjusting the operating parameter could be based on a difference between a measured anisotropy of the first surface and a measured anisotropy of the second surface. For example, the operating parameter could be adjusted to achieve a desired difference between the measured anisotropy of the first surface and the measured anisotropy of the second surface. Multiple headboxes could be controlled, such as when different headboxes are used to produce different layers of a multi-layer sheet. | 11-24-2011 |
| 20110290438 | Closed-loop Monitoring and Identification of CD Alignment for Papermaking Processes - Alignment is a critical component for modeling a cross-directional (CD) papermaking process. It specifies the spatial relationship between individual CD actuators to paper quality measurements. Misalignment can occur unexpectedly due to sheet wander or CD shrinkage variation. In certain applications and circumstances, a misalignment of one third (⅓) actuator zone width can result in significant paper quality degradation. Detecting a misalignment and identifying CD alignment in closed loop are highly demanded in paper mills but these are nontrivial problems. A technique for maintaining proper CD alignment in sheetmaking systems entails monitoring the alignment online, triggering closed loop identification if misalignment is detected, and then deploying the new alignment. No personnel intervention is required. | 12-01-2011 |
| 20120031577 | FLUOROMETRIC METHOD FOR MONITORING SURFACE ADDITIVES IN A PAPERMAKING PROCESS - An apparatus for and method of monitoring and optionally controlling the addition of one or more surface additives to a papermaking process via fluorometric means is disclosed. | 02-09-2012 |
| 20120037326 | DEVICE FOR DETERMINING THE WATER CONTENT OF A TARGET - A device is provided for determining the water content of a target ( | 02-16-2012 |
| 20120073775 | METHOD FOR MONITORING ORGANIC DEPOSITS IN PAPERMAKING - A method for monitoring the deposition of organic deposits from a liquid or slurry in a papermaking process is disclosed. Also disclosed is a method for measuring the effectiveness of inhibitors that decrease the deposition of organic deposits in a papermaking process. The method may involve monitoring the deposition of organic deposits of a liquid or slurry that simulates the conditions of a papermaking process. The methods may comprise the steps of monitoring the rate of deposition of organic deposits; adding an inhibitor that decreases the deposition of organic deposits from the liquid or slurry; and optionally re-measuring the rate of deposition of organic deposits from the liquid or slurry onto the quartz crystal microbalance, with the rates of deposition determined by measuring the vibration frequency of the quartz crystal microbalance. | 03-29-2012 |
| 20120211190 | METHODS FOR DETERMINING THE DEGREE OF DEPOSITION OF CONTAMINANTS - Herein provided are methods for determining deposition of contaminants significantly influencing machine runnability or product quality in manufacturing processes of pulp and paper, especially determining the degree of deposition and the morphology of deposits of sticky contaminants or pitch and for evaluating the effect of chemicals for reducing deposition. | 08-23-2012 |
| 20140130996 | APPARATUS, SYSTEM, AND PROCESS FOR DETERMINING CHARACTERISTICS OF A SURFACE OF A PAPERMAKING FABRIC - Apparatuses, processes, and systems for implementing techniques for determining characteristics of a papermaking fabric. The techniques include forming a representation of a portion of the surface of the fabric, with the representation showing the knuckles and pockets in the surface. The representation can be formed, for example, in pressure measurement film, in wax paper, or as a photograph. An image is generated from the representation, and the image is analyzed to determine characteristics of the surface of the fabric, such as knuckle sizes and pocket sizes. The depth of pockets in the fabric can also be determined. The techniques can be used in processes for analyzing wear of a fabric, and for obtaining a fabric for making a paper product with a particular three-dimensional structure. | 05-15-2014 |
| 20150075741 | METHOD FOR AUTOMATICALLY DETERMINING STICKIES IN A RECYCLED FIBRE PROCESS - The invention relates to a method and a system for continuously and automatically determining sticky levels in a process for producing recycled fibre pulp utilizing near-infrared (NIR) spectroscopy in combination with one or more automated sheet former (s). | 03-19-2015 |
| 20150292158 | METHOD FOR CONTROLLING THE FORMATION OF A FIBER WEB OF A FIBER OR PAPER PRODUCING PROCESS - A method for controlling the formation of a fiber web of a fiber or paper producing process includes a plurality of successive individual method steps in which controllable chemical and/or physical sequences or process steps are carried out in dependence on measured values. The materials required for the formation of the fiber web are treated, combined, and/or dewatered in the sequences or process steps. At least some of the measured values are detected inline and directly or indirectly used in order to control the formation. At least the manipulated variables, which influence the formation in a relevant manner, of the individual sequences or processes are formed dependent on definable secondary conditions during the entire process. | 10-15-2015 |
| 20160053435 | SHEET-MANUFACTURING DEVICE AND METHOD FOR CONTROLLING SHEET-MANUFACTURING DEVICE - A sheet-manufacturing device that manufactures a sheet of which the quality is stable, by controlling airflow to be constant and causing a defibrated state to be constant. A sheet-manufacturing device including a defibrating unit configured to generate a defibrated material by defibrating a defibration object; a temperature acquiring unit configured to acquire a temperature of the defibrating unit; and a control unit configured to change a mass flow rate of the air including the defibrated material transported from the defibrating unit. | 02-25-2016 |
| 20160160442 | SENSOR ROLL - A roll for a machine for producing and/or processing a fibrous web, such as a paper, board or tissue web, has a circular-cylindrical main roll body. A roll cover covers the circumferential surface of the main roll body, at least in some segments. A pressure- and/or temperature-sensitive sensor is embedded in the roll cover. The sensor connects to an electrical and/or optical signal line. The signal line has a first line segment inside the roll. A second line segment extends substantially outside the roll and is connectable to a signal excitation and/or signal processing unit at one end. An electrical and/or optical rotational connection connects the first and second line segments to allow the line segments to be rotated relative to one another. When the roll is rotated, the first line segment rotates together with the main roll body. The second line segment does not have to follow the rotation. | 06-09-2016 |
| 20160168794 | SHEET MANUFACTURING APPARATUS AND SHEET MANUFACTURING METHOD | 06-16-2016 |
