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| Number | Title | Issue Date |
| 7520961 | Process and device for blending fluid flows The invention relates to a process for blending liquid flows, particularly in the approach system to a paper machine. It is characterized by the individual liquid flows being merged, blended with one another, and degassed, all at the same time. In addition, the inve... | 04/21/2009 |
| 7318883 | Equipment and method in a paper or board machine for mixing of fresh stock and of water for dilution of fresh stock The invention concerns an equipment and a method in a paper or board machine for mixing fresh stock (M) with water (V) used for dilution of the fresh stock. At the point of mixing (K) of the dilution water (V) and the fresh stock (M) passed from the pipe (13)... | 01/15/2008 |
| 7237573 | High pressure, low flow rate fluid flow control An adjustable high pressure, low flow metering valve provides a sleeve extending about a restrictor shaft, the sleeve having a narrow helical groove formed in the inside diameter. A restrictor shaft within the sleeve encloses the groove and forms a sealed helical fl... | 07/03/2007 |
| 7166193 | Method of ensuring flatness of a vane in a headbox by means of a mounting arrangement, headbox with such a mounting arrangement, a mounting arrangement and vane therefor A method of ensuring the flatness of a vane that is mounted in a headbox by means of a mounting arrangement including engagement dowels for cooperation with a downstream support wall of a transverse groove, said vane being affected during operation by shearing force... | 01/23/2007 |
| 7067040 | Headbox of paper machine or such A headbox (10) of a paper machine or such includes a bypass manifold (J1), from which the pulp is conducted by way of pipes (11a1.1, 11a1.2 . . . 11a2.1, 11a | 06/27/2006 |
| 7017611 | One-piece manifold for a reverse osmosis system A one-piece manifold for a reverse osmosis system includes a filter configured to receive water from a water port and a membrane configured to receive filtered water via a first conduit. The membrane is also configured to send permeate water to a reverse osmosis tan... | 03/28/2006 |
| 7017597 | Megasonic cleaning apparatus for fabricating semiconductor device A megasonic cleaning apparatus is provided for removing contamination particles on a wafer. The megasonic cleaning apparatus includes a piezoelectric transducer and an energy transfer rod. The piezoelectric transducer is for generating megasonic energy. The energy t... | 03/28/2006 |
| 7001488 | Method of and apparatus for distribution of paper stock in paper or board making machinery An inlet chamber is connected to a nozzle section by way of a plurality of tubes. Diluting liquid for mixing with paper stock flowing through one or each of said tubes is fed into the tube via annular inlet means. To ensure thorough mixing, channel means leading int... | 02/21/2006 |
| 6997346 | Apparatus and method for reducing buildup of particulate matter in particulate-matter-delivery systems The present disclosure provides approaches for reducing buildup of particulate-matter in particulate-matter-delivery systems. In some embodiments, a trough-shaped feeder is provided in which a rectangular-to-elliptical conduit extends from the trough-shaped feeder. ... | 02/14/2006 |
| 6986832 | Arrangement for mixing flows in papermaking process The invention relates to a method and a mixer for mixing flows of a papermaking process. In the invention, a first flow is conveyed through a tube, and turbulence is generated in it by means of form parts located on the inner periphery of the tube. The mixing zone o... | 01/17/2006 |
| 6962647 | Headbox for a paper machine, board machine, pulp machine or equivalent A headbox, for example, in a pulp or board machine, is suitable for high basis weights which are over 400 g/m2 and for high fiber suspension consistencies which are in a range of 2–5%. The headbox has a turbulence part (1), into which a fiber sus... | 11/08/2005 |
| 6962646 | Multi-layer headbox Multi-layer headbox for a paper machine that includes a plurality of nozzle chambers having outlet gaps located at nozzle chamber ends. Each of the plurality of nozzle chambers are assigned to different layers, and at least one of the plurality of nozzle chambers ha... | 11/08/2005 |
| 6902651 | Tube bank structure, and flow tube producing method The invention provides tube bank structure and a method of manufacturing a flow tube, which can improve the stabilization of the flow of stock in the tube bank of the headbox of a papermaking machine and prevent the development of turbulence and uneven concentration... | 06/07/2005 |
| 6902650 | Method of making a stratified paper The present invention provides a method making stratified paper by redistributing the pulp suspension inside the headbox nozzle using acoustic radiation waves. Acoustic radiation forces fractionate fibers based on fiber radius. The acoustic radiation waves separate ... | 06/07/2005 |
| 6890408 | Headbox for the metered addition of a fluid medium into a suspension stream Headbox for one of a paper and cardboard machine includes at least one material suspension supply running a width of the machine. At least one turbulence producer has at least one conduit through which a material suspension flows. At least one metered addition point... | 05/10/2005 |
| 6875312 | Method for fluidisation of pulp flow in the headbox of a paper machine or such and control equipment used in the fluidisation A method for fluidisation of a pulp flow in the headbox of a paper machine or such. The characteristics of the pulp flow are affected in the headbox's fluidiser (14) in one step only, whereby the height (h1) of the step is at least equal to the ave... | 04/05/2005 |
| 6746572 | Method for determining a characteristic value for the binding force potential of suspended paper fibers and use of this method Method for determining a characteristic value for a binding force potential of paper fibers in a fibrous suspension. The method includes measuring an air content of the fibrous suspension and deriving the characteristic value from the measuring. ... | 06/08/2004 |
| 6740198 | Method and arrangement for mixing pulp components in the manufacture of paper The invention relates to a method of mixing pulp components in the manufacture of paper, in which method the pulp components to be mixed are led to a mixing point along tubes arranged inside each other. The pulp component flows are mixed by generating turbulence in ... | 05/25/2004 |
| 6679974 | Procedure and means for generating turbulence in stock suspension flow In a paper machine headbox, a stock suspension flow passes through turbulence pipes (14an) and is distributed into superimposed layers. Stepped expansion spots (16) of the flow cross-section area of the turbulence pipes (14) or the positions of... | 01/20/2004 |
| 6605186 | Headbox for gypsum/fiber board production A headbox for use in a water felting process includes a housing and two rotating horizontal distribution rolls. The housing has curved sections shaped to conform to the outer cylindrical surface of the distribution rolls, wherein the curved section is clo... | 08/12/2003 |
| 6544387 | Multi-layer headbox for a paper/board machine A multi-layer headbox for a paper or board machine including stock inlet headers each providing one stock and coupled to a tube bank which in turn is coupled to a respective intermediate chamber. The stock flows from the intermediate chambers into a turbu... | 04/08/2003 |
| 6494993 | Multi-layer web formation by means of a simple basic-stock system The invention concerns multi-layer web formation by means of a simple basic-stock system and in particular a method for regulation of the properties of the different layers in a stock system that comprises several layers by means of additional stocks. The... | 12/17/2002 |
| 6475344 | Method of mixing jets of paper fiber stock Methods and apparatus to enhance paper and board forming qualities with insert tubes and/or a diffuser block in the paper forming machine headbox component which generates vorticity in the machine direction (MD) which is superimposed on the streamwise flo... | 11/05/2002 |
| 6464837 | Headbox and process for the metered addition of a fluid medium into a suspension stream of a headbox Process for a metered addition of a fluid medium into a material suspension stream of a headbox, including feeding the material suspension in a main flow direction through at least one turbulence-producing conduit to a headbox nozzle, the at least one tur... | 10/15/2002 |
| 6461479 | Process and device for distributing a pulp suspension, particularly at medium consistency The invention relates to a process for distributing an especially medium-consistent fibrous suspension in front of a dewatering device. It is distinguished in that the fibrous suspension is taken to the dewatering device in fluidized form and evenly distr... | 10/08/2002 |
| 6451167 | Wetlay process for manufacture of highly-oriented fibrous mats A mat containing highly machine direction oriented (90% or greater), discontinuous reinforcement fibers, is produced on inclined wire or rotary paper making machinery. Fibers are first uniformly dispersed in an aqueous medium containing thickeners and wet... | 09/17/2002 |
| 6413376 | Headbox for gypsum/fiber board production A headbox for use in a water felting process includes a housing and two rotating horizontal distribution rolls. The housing has curved sections shaped to conform to the outer cylindrical surface of the distribution rolls, wherein the curved section is clo... | 07/02/2002 |
| 6406595 | Methods and apparatus to enhance paper and board forming qualities Methods and apparatus to enhance paper and board forming qualities with insert tubes and/or a diffuser block in the paper forming machine headbox component which generates vorticity in the machine direction (MD) which is superimposed on the streamwise flo... | 06/18/2002 |
| 6372092 | Headbox and process for supplying a material suspension Headbox of a paper machine and a process of supplying a material suspension, The headbox includes at least one material suspension supplying system, and a headbox nozzle that includes a first dividing wall having a machine width and a second dividing wall... | 04/16/2002 |
| 6368460 | Method and apparatus to enhance paper and board forming qualities Methods and apparatus to enhance paper and board forming qualities with insert tubes and/or a diffuser block in the paper forming machine headbox component which generates vorticity in the machine direction (MD) which is super imposed on the streamwise fl... | 04/09/2002 |
| 6322666 | Regulation system and method in a paper machine A feedback-connected on-line regulation system for a headbox of a paper or board machine. The headbox includes a flow duct for stock suspension or separate flow ducts placed one above the other, each flow duct extending from an inlet header of the headbox... | 11/27/2001 |
| 6303004 | Stock inlet Stock inlet of a paper machine that includes at least one stock suspension supply, a diffusor block having a plurality of tubular elements, dividing elements which extend across a width of the machine, and a stock inlet aperture having a top wall and a bo... | 10/16/2001 |
| 6299731 | Process and headbox system for improving consistency cross-direction profile of fiber web Process and apparatus for improving a consistency cross-direction profile of a fiber web in the wet section. The process includes distributing a fiber suspension across a machine width from a headbox to one of on a wire and between two wires, adjusting a ... | 10/09/2001 |
| 6284100 | Method and apparatus for controlling a headbox in a paper machine Method and apparatus for controlling the mixing proportions of feed streams being supplied to a headbox, using devices for sampling two or more of the feed streams upstream of the headbox and devices for measuring concentration of constituents in or other... | 09/04/2001 |
| 6264796 | Headbox diffuser A diffuser section for use in a headbox, the diffuser section comprising a plurality of hollow diffusers, each diffuser having an outlet and an inlet that is shaped as a polygon. The plurality of diffusers are arranged such that the inlet of each the diff... | 07/24/2001 |
| 6214170 | Process for cleaning or maintaining the cleanliness of the low-consistency branch of a headbox system Process for cleaning or maintaining the cleanliness of a low-consistency branch of a stock density-regulated headbox system including a constant part of a paper or cardboard machine having at least one high-consistency branch and one low-consistency branc... | 04/10/2001 |
| 6203665 | Process for setting a uniform characteristic cross-direction profile for a paper web Process for setting a uniform characteristic cross-direction profile for a paper web with regard to at least formation, basis weight, and fiber orientation in a paper machine. The paper machine can include a headbox with an adjustable die exit opening and... | 03/20/2001 |
| 6200421 | Apparatus and process for feeding stock to a papermachine The invention relates to an apparatus and a process for feeding papermaking stock to a papermachine. The apparatus comprises a mixing vessel (12) for receiving and mixing stock components and a pipe (40) for feeding the resulting mixed stock to said paper... | 03/13/2001 |
| 6179963 | Process for influencing the breaking length cross-machine profile of a running fibrous material web A process for producing a paper web having an essentially flat basis weight cross-machine profile and for simultaneously producing an essentially flat breaking length ratio cross-machine profile. This is achieved in that the lay of the fibers is deliberat... | 01/30/2001 |
| 6146500 | Suction breast roll former and method, with flexible headbox roof A suction breast roll former has a support surface with a plurality of apertures formed therein that are operatively connected to a vacuum source. A headbox has a flexible roof extending downstream from a slice opening and disposed adjacent to a support s... | 11/14/2000 |
