Abstract: A method for manufacturing a prepreg in which a reinforcing substrate is impregnated with a thermosetting matrix resin. In the method, the reinforcing substrate is moved in a traveling direction. The thermosetting matrix resin is supplied to an outer circumferential surface of a transferring roller. The thermosetting matrix resin which substantially contains no solvent and which is in. a molten state is transferred from the outer circumferential surface of the transferring roller to a first surface of a reinforcing substrate while the reinforcing substrate moves. The thermosetting matrix resin which is transferred to the first surface is forced to permeate through the reinforcing substrate by pressing at least one pressing roller on the thermosetting matrix resin transferred to the first surface while the reinforcing substrate moves. The reinforcing substrate impregnated with the thermosetting matrix resin is heated to semi-cure the thermosetting matrix resin.

Abstract: A coating head, and coating apparatus and methods using the coating head, for applying a solvent free coating material to a strip article advancing longitudinally in a coating line. The head includes a die having a transverse slit through which the coating material is deposited on the strip surface and having a land portion with an extended land surface on the exit side of the slit, the die being supported for movement normal to the strip surface, and one or more air or hydraulic cylinders exerting a load on at least the land portion of the die to urge the land surface toward the strip, wherein the die is constituted of a main body and the land portion, and the land portion is so connected to the main die body as to be capable of flexing relative to the main die body in a direction normal to the strip surface but to resist flexing in the direction of strip advance in the coating line.

Abstract: The invention relates to a device for applying a coating substance to a continuous paper web in a process for producing abrasion-resistant laminates for manufacturing decorative paper. The coating substance consists of a viscous mixture of melamine resin and alphacellulose to which particles of corundum are added, and is applied to the visible surface of the paper. The inventive device includes a deflector roll (2) on which the paper web (1) lies in an area in which it loops around; a metering roll (6) which is arranged parallel to the deflector roll (2) and forms the boundary of a gap with the same, and which is driven synchronously or almost synchronously with the deflector roll; a slit nozzle (7) for applying the coating substance either directly to the paper web (1) on the deflector roll (2) or to the metering roll (6); and a doctor blade of a rectangular piece (9) of flexible rubber type material.

Abstract: Known doctor rods (1) used as dosing elements in coating devices have a cylindrical steel base body on whose cover surface a chromium or ceramic layer of hard material is applied. According to the invention, the cracks and craters in the layer of hard material are closed by a joint which is produced by means of an ion implantation process, by the hard material reacting with the ions applied in a plasma. The improved doctor rods have a longer service life than known doctor rods.

Abstract: In the paper coating operation a wet or dry edge from coating composition is formed on the, seen in the direction of movement of the paper web, downstream side of the doctor, the so-called stalagmite formation. This stalagmite formation leads to various problems in the papermaking process and especially occurs at high speeds of the paper web and/or a high solids content of the coating composition, which two operating conditions are exactly required to obtain a maximum paper yield and a high paper quality. According to the invention the stalagmite formation is effectively prevented by supplying a fluid inhibiting the stalagmite formation to an area bounded, on the one hand, by the paper web and, on the other hand, by the above side of the doctor blade.

Abstract: A process of producing an elongated coated strip article having a layer of coating material on each opposite surface of the strip article, in which the ratio of layer thicknesses on opposite sides of the strip article may be set or varied. The process comprises simultaneously applying layers of solidifiable liquid coating materials on the opposite sides of the strip article by advancing the strip article in a direction along a path between opposed coating heads, at least one of which is a floating coating head, having material delivery slots and metering lands for delivery and metering of the liquid coating materials to the opposite surface to form the layers. The ratio of the layer thicknesses may be adjusted when required by varying the path of strip article advance between the floating coating heads to cause changes in angles formed between the strip surfaces and adjacent metering lands on opposite sides of the strip article. The invention also provides apparatus for carrying out the process.

Abstract: An extrusion apparatus is described comprising an underside extrusion nozzle for extruding a substance onto an object from underneath the object, the nozzle comprising: a body and a manifold therein; a plurality of extrusion passages in the body extending between the body exterior surface and the manifold; and a scraper blade attached to the body adjacent to the passages and defining a reservoir between the exterior surface and the scraper blade. The extrusion apparatus may further comprise a stand for holding and biasing the nozzle in contact with an object conveyed above it.

Abstract: A device designed for coating a material web with a coating medium includes a coater, a metering/smoothing device positioned downstream of the coater in the direction of feed of the material web, at a certain distance from the coater, and a support roll around which the material web is guided. Moreover, the material web is guided around the support roll only in the area of the metering/smoothing device, and it traverses essentially in a straight line between the coater and the support roll. In accordance to a first aspect of this invention, a support arrangement supports the material web in the straight web section between the coater and the support roll. In accordance to a second aspect of this invention, devices are provided which stabilize the material web in the area where the web traverses in a straight line.

Abstract: A beam structure (10) made of a composite for a pulp machine/paper machine/board machine or for a paper/board finishing device. The beam (10, 10a1, 10a2) is formed of a first curved part (12) and of a second straight part (13) joined thereto, to which second straight part (13) a doctoring, coating or measurement apparatus (110) is attached.

Abstract: A loading hose for use in a paper machine doctor or coating device, which loading hose is located between the doctor's or coating device's blade support and rotatably arranged blade holder, is arranged to load the doctor blade of the doctor or the coating blade of the coating device. The loading hose incorporates a flexible casing, which is pressure-resistant and of a uniform cross-section. The loading hose includes at least one stiffening member attached to the casing and arranged to lie against either the blade support or the blade holder.

Abstract: An apparatus for coating a paper or paperboard web with at least two coat layers. The present invention achieves two-layer coating and is capable of providing a smooth coat with high opacifying power. A first coat layer is initially applied to the web. The surface of this first coat layer is smoothed by a smoothing element. After smoothing, this first coat layer is partially or entirely dried, and a second coat layer is applied onto the first coat layer using a transfer coater.

Abstract: A device for the application of a liquid or viscous coating medium onto a moving fiber material web, specifically a paper or cardboard web, includes an applicator unit, a first backing element which is assigned to the applicator unit and around at least a portion of the circumference of which the fiber material web travels, a leveling and/or metering device, and a second backing element which is assigned to the leveling and/or metering device and around at least a portion of the circumference of which the fiber material web travels. The surface characteristics of the first backing element and the second backing element are matched to each other so that the fiber material web—under the influence of the drive by the second backing element—may move relative to the first backing element.

Abstract: A coating machine for the application of a coating medium onto a moving surface includes a counter-force generating device which generates a counter force that opposes the force generated by a load device.

Abstract: Coating blade for applying coating material onto a travelling web (41), particularly coating liquid onto a travelling paper web, comprising a steel band (3), which, along the edge section (7) intended to engage the web (41), is provided with a wear-resistant coating (5). Said coating is constituted by a material which has a hardness according to Shore A of from about 30 to about 80.

Abstract: A method and apparatus for coating a paper or a paper board web, comprising spreading coating mix having a solids content of 55-75% on the surface of the web with a nozzle applicator, levelling and metering the spread coating mix on the surface of the web by a doctor element capable of producing a high hydrodynamic force on the coating layer between the doctor element and the web, the doctor element being located downstream of the applicator so that the dwell time between the spreading of the coating mix to the metering is 72-2400 ms. The web speed is preferably 100-1000 m/s. A good smoothness and coverage is achieved by this method due to long dwell time.

Abstract: A method and apparatus for producing paperboard, the method comprising the steps of applying a coating mix layer having a thickness greater than that of the final coat thickness to the surface of the web being coated using a coating mix formulation in which the solids content is at least 55%, passing the web with the coat applied thereto to a doctor blade located downstream in the travel direction of the web at a distance from the applicator apparatus such that the dwell time from the application step of the coating mix to the doctoring step is at least 130 ms, and smoothing the coat layer to its final thickness by means of a doctor blade. By this method a smooth surface can be obtained even on high coat weights.

Abstract: The moisture application system of the present invention comprises in combination a first means for applying liquid to a paper web and a second means in contact with the web for scraping off excess liquid and spreading the liquid uniformly across the paper web. The moisture application system of the present invention is particularly useful when combined with a machine calender for finishing a paper web.

Abstract: A method of coating a substrate of insulation material with a barrier layer involves spreading a curable liquid on a surface of the insulation using a spreader blade having a composite cross section profile. The profile includes a leading surface that converges toward the substrate surface and a trailing surface that is parallel to the substrate surface. The coating method is useful for fabricating acoustical and thermal energy insulation boards of nonwoven webs of glass fibers and other conventional insulation material. Particular benefit is derived from the method in coating grooved insulation boards for lining curved air conveying ducts with an elastically deformable, flexible coating that covers the board surface between grooves and bridges the grooves while leaving the groove channels open.

Abstract: A device for leveling and/or metering of a layer of liquid or viscous coating medium that has been applied to a moving background includes a leveling and/or metering element, at least one power component for positioning of the leveling and/or metering element against the background, and a power transfer device through which the at least one power component acts upon the leveling and/or metering element. The at least one power component acts upon the power transfer device through at least one spring arrangement.

Abstract: A support beam for at least one long working unit, notably of a paper machine or coater, includes several bundled, long profile elements forming in their entirety the support beam.

Abstract: In a method of direct or indirect application of a liquid or viscous coating medium onto a moving material web, specifically a paper or cardboard web, a layer of the coating medium is applied to the material web by use of an applicator unit. The coating result is then checked for deviations from the desired coating result. In the event that such deviations are detected, and in order to correct them, at least one applicator unit operating parameter is adjusted. The adjustment is made within a short time period, and with the material web running, from an initial operating parameter value that is in effect prior to detection of the deviation. Subsequently, the operating parameter is then reset to at least approximately the initial parameter value, whereby the adjustment and the subsequent resetting may be repeated if necessary.

Abstract: A doctoring device for an apparatus designed to apply a liquid or viscid medium onto a moving base surface includes a metering unit having a coater rod and a coater rod bed. The metering unit is attached to the support beam and is positioned so that it can be pressed against the base surface. A pressure-elastic support arrangement is disposed between the coater beam and the coater rod bed. The coater rod bed is supported pressure-elastically by the support beam via the support arrangement in at least two support directions that are perpendicular to each other. The spring rate of the support arrangement is adjustable in at least one of the support directions. A preferred support arrangement includes pressure hoses which are assigned to each of the two support directions. The pressures in these hoses can be adjusted, independently from each other, to a pre-determined level via a pressure source.

Abstract: A device for doctoring and/or metering a liquid or viscous medium on a moving operating surface includes a doctoring assembly having a doctoring surface extending transversely across the entire operating surface and pressing thereagainst. A doctoring support beam movably supports the doctoring assembly in a direction transverse to the operating surface. A pressure unit produces a force which is exerted on the doctoring assembly in order to produce a contact pressure between the doctoring surface and the operating surface. Undesired temperature-based movements of the doctoring support beam relative to the operating surface can be compensated for by a compensation device located in the pressure flow path between the doctoring support beam and the doctoring assembly. This ensures that the contact pressure between the doctoring surface and the operating surface is substantially unaffected by such movements or deformations of the doctoring support beam.

Abstract: A coat weight control system for applying coating to a paper sheet in a paper machine permits even coating across the sheet with less actuator force needed. The system applies a specified force profile on a coating blade and has a plurality of actuators spaced apart, the actuators each applying a load. A flexible backing bar is positioned on the coating blade having connections there along to the actuators, the backing bar having a plurality of keyhole slots between the connections, the slots spaced apart along the bar.

Abstract: A holder is disclosed for applying the working edge of a doctor blade to a moving surface. The holder has upper and lower holder members constructed and arranged respectively to contact upper and lower surfaces of the doctor blade, with the doctor blade projecting forwardly to terminate at its working edge. One of the holder members comprises a composite of sandwiched elements enclosing one or more chambers having forwardly directed outlets. A pressurized fluid is introduced into the chambers for forward application via the outlets and along a surface of said doctor blade onto the surface being doctored.

Abstract: The invention relates to a method of directly or indirectly applying a liquid or pasty medium to a continuous material web by use of an application unit having at least one applicator, at least one doctor element, and at least one doctor element support at which the doctor element is held and can be pressed at a predetermined pressure against a counter-surface by at least one adjustment movement of the doctor element support. The following steps are usable to set a desired transverse and/or longitudinal profile of the medium to be applied or which has been applied: pressing the doctor element at a predetermined contact pressure against the counter-surface by adjusting the doctor element support into a predetermined adjustment position, and by altering the forces exerted on the doctor element by the medium to be applied or which has been applied, while the adjustment position of the doctor element support is kept constant for a predetermined production range.

Abstract: A nozzle apparatus and method of use for extruding a conductive paste through a stencil or screen onto a substrate are disclosed. The nozzle includes a body and a conformable insert for contacting the screen. The method comprises the steps of obtaining a substrate and a patterned screen, contacting the screen with a nozzle comprising a nozzle body and a conformable nozzle insert, and extruding a paste through the nozzle and screen onto the substrate. The apparatus and method are particularly useful for producing patterned lines from extruded pastes in the manufacture of microelectronic components.

Abstract: A device for indirect application of a liquid or viscous medium onto a traveling material web, specifically a paper or cardboard web, includes an applicator device for the application of a layer of liquid or viscous medium onto a surface of a transfer element. The transfer element is in contact with the moving material web and transfers the coating onto the web. A leveling unit is equipped with a leveling element positioned against the material web for smoothing of the coating layer on the material web. The leveling element is mounted rigidly in cross direction to the material web, that is, in a direction substantially orthogonal and in a local material web progression to the direction of travel of the material web.

Abstract: An apparatus for coating a paper web in which a coating mix is applied onto a paper web using an applicator unit which forms a linear mechanical force on the web against a first backing surface situated on the back side of the web. The coating mix applied onto the web is doctored using a doctor unit acting against a second backing surface. The speed of at least one of the backing surfaces is independently controlled relative to the speed of the first backing surface and the web speed in order to attain control of the tensile stress of the web.

Abstract: A method and apparatus for coating a moving paper or paperboard web (1), in which coating mix is applied to the surface of the web (1) by means of a rotating applicator roll (11). The coating mix applied to the web (1) is levelled with the help of smoothing means (4, 5, 6) acting against a backing roll (8). The web (1) to be coated is presses against the applicator roll (11) with the help of an endless band (2), which is adapted to pass over at least the applicator roll (11), the backing roll (8) and an adjustment roll (10) placed upstream of the applicator roll so that the band (2) with the web (1) backed by the band (2) are together deflected to pass over the applicator roll (11) along their path between the adjustment roll (10) and the backing roll (8).

Abstract: A device for the application of a liquid or viscous medium onto a running opposing surface includes a doctor blade that is mounted on a support beam, whereby the relative positions of the support beam and the opposing surface are adjustable by use of a regulating device. A flexible pressure tubing that is adjustable against the doctor blade is also provided on the support beam. In the process of controlling/regulating the device, the operating condition of the coating applicator is recorded, control values are established on the basis of the recorded results, and the regulating device and/or fluid pressure in the flexible pressure tubing is influenced on the basis of the established control values. Control/adjustments are made in such a manner that the angle of attack between the doctor blade and the opposing surface is maintained at a predetermined value.

Abstract: A method and apparatus for applying adhesive to the flutes of corrugated board to bond a face thereto. An applicator roll is provided with a uniform thin coating of adhesive by a flexible bar urged toward the surface of the applicator roll. A rider roll is provided adjacent the applicator roll and at the same height to form a vertical space for passage of the board therebetween so that the amount of glue applied to the tip of the flutes is directly proportional to the speed of the applicator roll. The space between the applicator roll and the rider roll is precisely controlled to minimize the amount of crush or deformation of the flutes during the application of the adhesive thereto. The dwell time in which the flutes are in contact with the adhesive layer on the applicator roll is reduced by minimizing the size of the rider roll and wrapping the face substantially around the rider roll.

Abstract: A coater blade and backing roll combination contains a coater blade having an elastic steel blade with a wear-resistant coating formed thereon. The wear-resistant coating has a hardness greater than that of the elastic steel blade and is provided on an edge of the blade to define a coater surface for contacting with a moving surface of coated paper on the backing roll. The backing roll has a concave outer surface having a curvature corresponding to a quadratic equation and the coater surface has a concave curvature corresponding to the quadratic equation.

Abstract: An elongated component part, extending across the width of a moving material web, can be adjusted for the purpose of applying a liquid or viscid medium onto the moving material web. The component part is supported by a supporting beam and is equipped with an adjustment fixture including a plurality of adjustment devices which are arranged along the length of the elongated component part at the support locations. The adjustment devices are separated from each other and adjusted for achieving a forced deformation of the component part in a direction that is perpendicular to their longitudinal axis. The adjustment positions of the respective adjustment devices are recorded. Imaginary connecting lines between the free ends of two respective, neighboring support locations are formed. An angle between two respective, neighboring connecting lines is calculated. The respective, calculated angle is compared with a pre-determined boundary angle.

Abstract: An apparatus for joining at least one actuator to at least one oblong working unit of a coating system allows translatory and/or rotatory adjustment. The apparatus includes, in one variant, at least one coupling system joining the actuator and the working unit. The coupling system is configured as a force transmission element which, in at least one axis substantially parallel to the longitudinal expanse of the oblong working unit, is bending-elastic. The coupling system is substantially resistant to tension and compression with respect to the actuating direction of the actuator.

Abstract: An article having an electrical circuit component printed directly onto one side of a substrate includes the substrate and an electrical circuit component formed of a conductive liquid printed directly onto one side of the substrate. The electrical component is capable of performing its electrical circuit functions, as printed, and without the necessity for post-printing processes such as metal etching, catalytic ink activation, or electroless deposition.

Abstract: In a method for direct or indirect application of a liquid or pasty medium onto a traveling material web, notably of paper or cardboard, where during the application the cross profile (length profile) of the medium is modified under control and thereafter, in the direction of travel, the length profile (cross profile) of the previously applied medium is modified under control. Control of the cross profile and control of the length profile of the applied medium occur separately from one another in automatic control loops based on measurements of the applied profile. In addition is a pertaining apparatus with an applicator, an equalizer, a pertaining cross profile control loop, and a pertaining length profile control loop.

Abstract: A system for infiltrating, with active materials, a porous substrate to form electrodes, typically used for batteries, is described that features a vacuum device having a dynamic distribution assembly which allows for continuous and controlled deposition of electrochemical active materials onto a substrate, as the substrate moves therethrough, while preventing the active materials from leaving the vacuum chamber before infiltrating the substrate. The vacuum device includes a vacuum chamber, in fluid communication with a supply of active materials, and a vacuum pump, disposed within the vacuum chamber. The vacuum chamber includes an inlet and an outlet, positioned opposite to the inlet. The first and second opposed major surfaces and a plurality of voids extend therebetween. While disposed within the vacuum chamber, the vacuum pump creates a pressure differential between the first and second surfaces.

Abstract: A flexible blade is used as a metering device by being inserted at a nip formed between a radiused profile portion of a fixed, rigid loading element and a substrate roll. The flexible blade is forced to take the shape of the profile portion at the nip, and thereby meter the coating to a desired thickness and consistency. Inflatable air tubes engage the loading element to adjust the overall thickness of the coating.

Abstract: A coater applies a coating medium onto a moving surface such as a fiber web. A coating element, such as a coater rod or coater blade, is configured for metering the coating medium to the moving surface. A profile bar assembly is connected to the mounting and movable toward and away from the coating element. The profile bar assembly includes a first profile bar attached to the mounting and a second profile bar removably attached to the first profile bar. Each of the first profile bar and the second profile bar carry a respective air load tube, with only one of the air load tubes engaging the coating element.

Abstract: An installation for coating the surface of a web of material with a paste. A printing screen has a doctor blade lying within for applying the print paste through holes in the printing screen onto the web. A counter roll cooperates with an electromagnet to producing a controllable level of contact pressure of the doctor blade against the printing screen. The roll body of the counter roll is provided with a coating that has piezoelectric elements and is divided into sections specific to the width, each section being individually controllable. This permits dynamic control of the application of paste over the width of the web.

Abstract: An apparatus for direct or indirect application of a liquid or pasty medium onto a traveling material web, notably of paper or cardboard, with a support beam which substantially extends in its length direction across the entire width of the material web, is supported in at least two bearing points and includes at least one finish-dosing apparatus. A backing roll opposes the support beam. A relevant bearing point includes two mutually spaced support bars each of which is at its one end jointedly fixed to pivot points of the support beam and at its other end pivotally connected to at least one foundation. At least one prop bar is attached at its one end jointedly to the support beam and is at its other end jointedly fixed to the foundation. A least one of the aforementioned bars is lengthwise adjustable.

Abstract: The invention is directed to a coating apparatus for the direct or indirect application of a liquid or pasty substance onto a moving layer of material, such as paper, carton or cardboard, with a dispenser implement and, at some distance further along the line, a spreading device for finely controlling the amount of applied medium. The dispenser implement and the spreading device share a common collector/drain surface and a common collector bin for gathering excess amounts of the liquid or pasty substance.

Abstract: The invention concerns a cleaning lip for a rotating roll of a textile machine in a rolling mill (1) for processing fibrous materials wherein the cleaning lip (9) is comprised of a combined carrying device and a lip, the length (1) of the lip (11, 23) being limited by a wiping edge (AK, AK.sub.1), and the lip is composed of plastic. On the lip (11, 23) and in proximity to the carrying device, a groove (12, 24) is placed which runs parallel to said wiping edge (AK, AK.sub.1) of the lip. Alternatively, the cleaning lip can be installed for the clearing of wrapping, in that, upon the roll (14) reversing its direction from an original direction, then the wiping edge (AK, AK.sub.1) of the lip (11, 23) swings itself out of its original roll surface contact position. Upon a subsequent change of roll rotation back to the original direction, the wiping edge (AK, AK.sub.1) also swings itself back to its original wiping contact position.

Abstract: A support strip is braced against a doctor blade for coating a web and consists of spring steel sheet subdivided by slits into tongues. The tongues are securely clamped at their ends facing away from the dosage element and the continuous frontal edge is supported between guide strips so as to be movable in the direction of the dosage element. Adjustment elements engage at the tongues to cause them to bend perpendicularly with respect to the span of the tongues to control the force applied to the doctor blade.

Abstract: In an apparatus for the application of a liquid or pasty substance onto a traveling material web, notably of paper or cardboard, a doctor bar serving the metering of the applied substance is composed of at least two bar segments strung together in the longitudinal direction of the doctor bar and fixedly joined to one another. Possible thereby, in the manufacture of the doctor bar, is an easier handling and a better compliance with accuracy requirements.

Abstract: An applicator device for applying a coating agent onto a moving base, such as a paper or board web, onto the face of a film press roll, or equivalent, and a method for correcting for distortions arising from thermal strains in such an applicator device. The applicator device includes an applicator beam arranged in a direction transverse to a running direction of the moving base, a coating-agent feed pipe arranged in the transverse direction and mounted on the applicator beam, and coating members mounted on the applicator beam for applying a coating onto the moving base and spreading and smoothing the coating agent onto the moving base. The coating-agent feed pipe and the coating members are constructed as a single unit. The device also includes mounting members for mounting the single unit of the coating-agent feed pipe and the coating members on the applicator beam.

Abstract: The invention concerns a device (1) for applying a substance (9) to a surface (3), the device comprising a carrier beam (2) and a doctor blade unit (40) which can be pressed magnetically against the surface (3). Provided between the doctor blade unit (40) and the carrier beam (2) is a holder connection (5) which produces play transversely to the surface (3). The holder connection (5) comprises at least one pair of sliding holder elements (51, 52) which can move only in translation, interact and form a sliding guide plane (500) which can be aligned on the region of the doctor blade element application zone (31). The holder elements are interconnected in a manner rigid against tilting such that all the moments due to thrust forces on the doctor blade unit (40) act with respect to a point of application on the carrier beam without losses of moments.

Abstract: The invention relates to an applicator for direct or indirect application of a liquid or pasty coating medium onto a traveling material web, notably of paper or cardboard, including at least one adjustable coating edge delimiting apparatus for adjustment of a coating width on an applicator roll, backing roll and/or a traveling material web. The coating edge delimiting apparatus is arranged so as to be movable stepwise or continuously in a direction substantially transverse to the direction of travel of the material web.

Abstract: A blade holder for disposing a blade proximate to a roll for transporting a continuous web of material includes a blade positioned transversely to a direction of movement of a continuous web of material. The blade tensioning device is disposed on a blade supporting beam extending transversely to the direction of movement of the web, the blade supporting beam swivelable and oscillatable transversely to the direction of movement of the web. The holder includes a supporting element and a stand having a bracket upon which a first drag bearing is disposed, the supporting element rotatably supported by the first drag bearing. A second drag bearing links the supporting element, the blade supporting beam, and a lever. The holder also includes a swiveling device for swiveling the blade supporting beam from a working position to a maintenance position and a positioning device for adjusting a blade working angle.