Abstract: A headbox for a papermaking machine with an outlet slot that distributes pulp suspension over the, working width of the papermaking machine. For controlling operating parameters of throughput, pulp density and fiber quality of the suspension over the width of the machine, the headbox has a plurality of individual sections across the width of the machine. Each section has respective channels therethrough for passing pulp suspension. At least one connection at each section is to a controllable supply of pulp suspension where the operating parameters of that supply are controllable. Only separate operating parameter controlled streams pass through the sections of the headbox. Operating parameter control devices may deliver adjusted streams to a mixer upstream of the headbox channels. The mixer may also have individual sections across the width of the machine.

Abstract: A machine for the production of a continuous web, particularly of paper or cardboard, may include a plurality of rolls around which a continuous web may be guided. The machine may also include a blocking device, arranged in a vicinity of an edge of the continuous web, to prevent turbulences and arranged at a predetermined distance from a free stretch formed by the continuous web traveling between two adjacent rolls. The blocking device may extend along a longitudinal portion of the free stretch, i.e, in a transport direction of the continuous web, and/or may extend across a portion of the free stretch transverse to the transport direction of the continuous web.

Abstract: An extended nip press apparatus is disclosed for pressing a web. The apparatus includes an elongate press shoe which defines a concave surface. A backing roll cooperates with the concave surface for defining therebetween an extended nip pressing section for pressing the web. A looped bearing blanket slidably cooperates with the concave surface. The blanket is disposed between the shoe and the backing roll for supporting and guiding the web through the pressing section. A piston is pivotally connected to the press shoe, the piston being selectively urged towards the backing roll. The arrangement is such that when the piston is urged towards the backing roll, the piston urges the shoe and the blanket towards the backing roll so that the web disposed between the blanket and the backing roll is pressed. The piston has a first and a second portion, the first portion being disposed between the second portion and the shoe.

Abstract: A press section in a paper machine through which a paper web has a closed and supported draw and a method and arrangement for compensating for elongation of the web in an equalizing press nip in the press section. The press section has at least two successive separate nips and dewatering of the paper web is carried out at least in the first one of these nips, preferably between two press fabrics that receive water. The last press nip in a running direction of the web is the equalizing press nip which may be separate from the preceding nip and in which no substantial dewatering is performed. The web may be passed through the equalizing press nip from the preceding dewatering press nip on a transfer belt substantially non-water-receiving. After the equalizing nip, the elongation of the paper web in the machine direction, which elongation takes place in the equalizing nip, is compensated for by a difference in speed of the transfer belt.

Abstract: In order to prevent the lowering of yield of fibers of stock which is pinched by two wires and being transferred, specific dewatering blades are disposed on each of the wires are used. Blade sets are disposed on two wires 1, 2 forming loops to pinch stock 7 and running therealong. The blades of one blade set are dewatering limiting blades 20, each having a plane portion 20a to support the wires 1, 2 and an inclined face 20b disposed on the wire entering side of said plane portion 20a and forming a space of a wedge shape facing the wire face and enlarging toward the upstream side in the wire running direction. The blades of the other blade set are dewatering blades 21, each having a plane portion 21a to support the wires 1, 2 and an edge 21b to scrape water toward the upstream side of said plane portion 21a. The plane portion 21a having the edge 21b is disposed opposite to the space of a wedge shape.

Abstract: The invention is directed to a paper-making machine for making a paper web from a fiber suspension. The paper-making machine includes a headbox having an entrance, a fluid conduit connected to the headbox entrance, and a deaeration device with an exit connected to the fluid conduit. The deaeration device includes a housing and a pipe. The housing including an inner surface defining an inner chamber. The pipe is disposed at least partially within the housing and is configured to receive the fiber suspension. The pipe has a plurality of outlets disposed within the inner chamber of the housing. Each of the outlets is configured to output a stream of the fiber suspension against and at an acute angle relative to the inner surface of the inner chamber. A vacuum source is connected to the housing and is in fluid communication with the inner chamber.

Abstract: The invention refers to a device for dewatering and/or washing suspensions, especially fibre stock suspensions, with two dewatering rolls rotating in opposite directions, where at least a further two guide rolls, especially press rolls, are provided and a woven, especially endless woven, wire or filter belt runs over each combination of one dewatering roll and one further guide roll, by which arrangement the suspension to be dewatered and/or washed is carried in the gap between the two belts and dewatered. The invention is mainly characterised by the two belts forming a vertical gap and by a device to guide the belts being mounted in the region of this vertical gap.

Abstract: A press section of a paper making machine for dewatering a paper web (W) formed in a preceding forming section in which dewatering felts (11, 28) are applied to both surfaces of the paper web (W) as the paper web (W) travels in a closed draw from the forming section through a first extended nip press (NP.sub.1), thereby drawing a substantial amount of water simultaneously and symmetrically from both surfaces of the paper web (W). The upper felt (11) transports the paper web (W) from the first extended nip (NP.sub.1) to a smooth surfaced center roll (30) where the paper web (W) passes through at least one roll nip (N.sub.1, N.sub.2) or extended nip (NP.sub.2 ', NP.sub.3 '). The center roll (30) is positioned at an elevation higher than the first extended nip (NP.sub.1) thereby reducing the length of the press section. In a second roll nip (N.sub.2), a press fabric (33) is substituted for the upper felt (11) to efficiently remove additional water. Additional extended or roll nips (NP.sub.2, N.sub.3, N.sub.0, N.

Abstract: A process for production of a glass substrate coated with a patterned Nesa glass membrane which comprises, in sequence:the first step of coating a photoresist on a glass substrate to form a photoresist membrane, exposing the membrane to electromagnetic waves through a mask and then developing the photoresist to form a patterned photoresist membrane on the glass substrate;the second step of forming a Nesa glass membrane on the entire surface of the glass substrate thus provided with the patterned photoresist membrane; andthe third step of removing the patterned photoresist membrane together with the Nesa glass membrane thereon from the glass substrate to leave a patterned Nesa glass membrane on the glass substrate.

Abstract: A Method for dewatering a paper web (W) formed in a preceding forming section of a paper making machine in which dewatering felts (11, 28) are applied to both surfaces of the paper web (W) as the paper web (W) travels in a closed draw from the forming section through a first extended nip press (NP.sub.1), thereby drawing a substantial amount of water simultaneously and symmetrically from both surfaces of the paper web (W). The upper felt (11) transports the paper web (W) from the first extended nip (NP.sub.1) to a smooth surfaced center roll (30) where the paper web (W) passes through at least one roll nip (N.sub.1, N.sub.2) or extended nip (NP.sub.2 ', NP.sub.3 '). The center roll (30) is positioned at an elevation higher than the first extended nip (NP.sub.1) thereby reducing the length of the press section. In a second roll nip (N.sub.2), a press fabric (33) is substituted for the upper felt (11) to efficiently remove additional water. Additional extended or roll nips (NP.sub.2, N.sub.3, N.sub.0, N.sub.

Abstract: A method and device for enhancing the run of a web in a paper machine in which water is removed from the web by pressing the web in at least one press nip and after pressing, the web is dried in at least one dryer group applying impingement drying. The web is guided along a substantially linear path or by using a large curve radius in the dryer group applying impingement drying. In the drying stage, after the impingement drying, the web is dried in at least one dryer group having normal single-wire draw. The web is passed from the pressing stage to the drying stage as a closed draw and more particularly, from the pressing stage to the area with single-wire draw in the drying stage so that the web is constantly supported against at least one support face.

Abstract: Method and apparatus for cleaning a workpiece such as a semiconductor element in which the element is placed on a chuck mounted on a rotation mechanism in which the rotation mechanism rotates around a first axis, and the element to be cleaned rotates around a second axis spaced from the first axis in a planetary manner. The cleaning process is programmed such that the element may be sprayed, immersed for a soak or pre-soak step, immersed while spinning, sprayed while spinning, and dried by heated gas, or any combination of these. The cleaning program is performed in a single chamber, which may be heated to a desired temperature.

Abstract: A method and device for washing a drying wire in a dryer group in a dryer section of a paper or board machine in which the drying wire is guided by drying cylinders, reversing rolls and guide rolls. A liquid jet is directed at the drying wire at a location after a first one of the drying cylinders in the dryer group and before a last one of the drying cylinders in the dryer group and/or a location on a downward run of the drying wire from one of the drying cylinders. The washing device includes a spray device for providing the liquid jet and possibly an air blow device for blowing air at the drying wire after the liquid jet in order to dry the drying wire.

Abstract: A paper making felt for use in hot press or press drying paper making processes comprising a base cloth layer and batt fiber layers, with at least the paper-contacting surface layer of the batt fiber layers composed principally of poly(paraphenylene benzoxazole) fiber. The felt exhibits a high degree of resistance to flattening, and consequently its effectiveness in removing water from the paper and its useful life for that purpose are enhanced.

Abstract: A paper-making machine for making a paper web from a fiber suspension includes a headbox having a plurality of walls defining a chamber, and an inlet connected to at least one of the walls and disposed in fluid communication with the chamber. The inlet is configured to receive the fiber suspension. The headbox also has a discharge nozzle disposed in fluid communication with the chamber. The discharge nozzle defines an outlet from which the fiber suspension is discharged. The headbox also includes a sonic transducer, associated with the discharge nozzle, for transmitting sonic energy into the fiber suspension within the discharge nozzle and thereby substantially deflocculating the fiber suspension within the discharge nozzle.

Abstract: A suction box for a machine for manufacturing a fiber web extends transverse to the travel direction of a porous belt and applies suction to the belt and the fiber suspension on the belt. The suction box has an open side toward the belt. At least two and more usually a plurality of support strips contact and extend transverse to the travel direction of the belt. Each adjacent pair of strips defines a suction slot. At one or both lateral side zones of the belt, a respective filler limits each slot, and the fillers establish the length of the slot across the belt. A respective filler extension extends inward from each of the fillers. The extensions are pervious to the fluids being suctioned, such as water and air, by being narrowed or wedge shaped or by being perforated. The fillers with their extensions are adjustable in position transverse to the direction of travel.

Abstract: A furnace for molding glass blanks includes a housing having a series of electrical heating stations and a rotary door adapted to receive glass blanks for processing. The furnace also includes a rotary turntable for receiving the glass blanks and a steering coil positioned to direct the glass blanks in a spiral pattern as they are heated at the electrical stations, a paddling platform for manual shaping, and a pressing station for pressing the glass blanks into a predetermined configuration.

Abstract: A press roll for treating a material web in a nip formed with an opposing surface is provided. A press shoe extends along the nip and guides a press jacket. Several adjacent force elements disposed along the direction of the roll axis are supported on a stationary carrier. The force elements are preferably each fluid-actuated cylinder/piston units which can bias the press shoe with their movable pistons. The piston of at least one force element and/or an opposing region of the press shoe concentrate support forces in piston edge regions that are disposed opposite one another on different ends of a central piston plane perpendicular to the roll axis.

Abstract: An arrangement for feeding stock to a headbox in a papermaking machine which comprises at least one stock header with an inlet for receiving stock into the header and a plurality of stock header outlets permitting stock to leave the header. For each stock header outlet there is a stock conduit downstream of the stock header outlet permitting stock to pass from the stock header outlet, through the conduit to the inlet of the headbox. The arrangement includes a dilution header for feeding a diluent such as water to a plurality of stock conduits. The dilution header has an inlet for receiving a diluent into the dilution header and a plurality of outlets permitting the diluent to leave the dilution header. For each dilution header outlet, there is a diluent conduit permitting the passage of a diluent from the dilution header into a stock conduit.

Abstract: In a twin-wire former for the production of a paper web, two wire belts (11 and 12) together form a twin-wire zone which is divided into three sections (I, II and III). In the first section (I) the two wires (11, 12) travel over a curved forming shoe (16). They form there a wedge-shaped inlet slot (15) with which a headbox (10) is directly associated. In the second section (II), several resiliently supported strips (27) rest against the lower wire (11) and between each of said strips (27) a rigidly mounted strip (28) rests against the upper wire (12). In the third section (III) both wire belts (11, 12) pass over another curved forming shoe (23).