Abstract: A slide bead coating method and apparatus which is able to form a stable bead over the width of coating solutions and regularly coat the coating solutions on a web to an edge region and which is able to change the width of the coating solutions without stopping the coating operation even if the width of the web changes.A discharged liquid from a nozzle is applied on both side edges of the coating solutions flowing down a slide surface. Thereby, the stable bead can be formed at the side edges of the coating solutions, so that the coating solutions can be coated on the web to the edge region. Edge bead is formed at both side edges of the coating solutions through the nozzle, so that the width of the coating solutions can be adjusted.

Abstract: An adhesive viscous liquid screed for dispensing a uniform thickness of an initially viscous liquid material onto a planar work surface in order to produce a film of predetermined thickness, length and width. The screed engages a planar horizontal application surface and a reservoir is filled with a liquid adhesive. As the screed is propelled forward along the application surface, the pressure on the adhesive due to gravity causes it to be forced out of the reservoir and through a first release orifice, thereby depositing a thin film of liquid adhesive. The height of the film is determined by the distance between the application surface and the bottom surface of a rib defining the release orifice and the width of the film is determined by the distance between the substantially vertical sides of the first release orifice.

Abstract: The coater apparatus enclosure encloses the entire die of a coating apparatus includes an enclosure structure, a saturation station which saturates a supply gas with solvent, a device which supplies solvent-saturated gas to the enclosure to continuously purge the enclosure, and a device which controls the gas flow to the enclosure. The saturation station could include a heated jacketed vessel and a porous metal bubbler, or it could include a series of heat exchangers. No streaks can form due to coating fluid drying on the die lip because the gas supplied to the die enclosure is saturated with the solvent.

Abstract: The present invention discloses a pair of end dams for use on a waterbox on a papermaking machine. The end dam has a front curved foot-like structure having a mounting bracket on its back side for attachment to the backside of the waterbox while the curved end has a packing material on its underside which comes into contact with the steel roll of the papermaking machine. The packing material serves as an end dam communicating between the pond level control dam located on the forward shelf of the waterbox and the leading edge of the steel roll in such a way that the liquids are retained within the waterbox instead of being spilled onto the surrounding floor. The end dam of the present invention is secured to the waterbox with a screw-type clamp.

Abstract: A coating apparatus for coating an LCD substrate with a developing liquid for a photo-resist has a conveyer mechanism for linearly conveying the substrate in a conveying direction. The conveyer mechanism has a plurality of lower conveyer rollers which are driving rollers, and a plurality of upper conveyer rollers which are driven rollers. A main support roller is arranged such that it replaces one of the lower conveyer rollers. A developing liquid supply nozzle is arranged above the main support roller for supplying a developing liquid onto the substrate when the substrate is passing over the main support roller. The supply nozzle has a supply port which is laterally long and narrow, so that the developing liquid is supplied onto the substrate from the supply nozzle as a band. This band extends over the entire width of a target region of the substrate, which is perpendicular to the conveying direction, and is supplied thereto all at once.

Abstract: The present invention is to produce a ceramic green sheet with an even thickness. By supplying a ceramic slurry to a slurry room comprising a slurry coater, contacting a carrier film to the fringe part of an opening of the slurry room with pressure so as to close the opening, and moving the carrier film along the opening in the state, a ceramic green sheet made from the slurry can be formed on the carrier film. At the time, based on the actual flow rate data on the actual flow rate of the slurry measured by the flow meter and the actual thickness data on the actual thickness of the green sheet measured by the film thickness meter, appropriate flow rate data on the appropriate flow rate of the slurry to be supplied for obtaining a green sheet with a desired thickness are sought in an appropriate flow rate data calculating means so that the flow rate of the slurry is controlled by the flow rate controlling means based thereon.

Abstract: A method and an apparatus for direct or indirect one-sided or double-sided application of a liquid or pasty coating medium onto a spliced traveling material web, notably of paper or cardboard, includes at least one applicator applying the coating medium at a predetermined point of coating application onto the material web. At least one coating suspension system briefly suspends the application of the coating medium at the point of coating application or at a point of suspension located, based on the direction of travel of the material web, ahead of the point of coating application. The suspension of the application of coating medium occurs while or before the material web splice passes the point of coating application.

Abstract: An applicator for direct or indirect application of a liquid or pasty medium onto a traveling fiber material web includes a metering slot formed as open-jet nozzle between an approach-side lip and a departure-side lip. The approach-side lip or the departure-side lip features on its end directed toward the fiber web an angled flow guide surface.

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: A coating process includingproviding a coating composition comprising finely divided photoconductive organic particles dispersed in a solution of a film forming binder, the composition having a predetermined substantially constant liquid yield stress value,flowing the composition along a feed channel,introducing the composition into an elongated manifold cavity comprising a least a first progressively narrowing channel extending away from the feed channel,flowing the coating composition along at least the first progressively narrowing channel,flowing the coating composition out of the manifold cavity into an extrusion passageway extending away from at least the first progressively narrowing channel,shaping the coating composition into a thin ribbon shaped stream in the extrusion passageway,depositing the ribbon shaped stream on a substrate to form a coating, andmaintaining an applied shear stress to the composition that is greater than the yield shear stress value of the coating composition while flowing the

Abstract: The invention relates to an applicator for direct or indirect application of a coating medium onto a traveling material web, notably of paper or cardboard, including a dosing apparatus with a dosing slot configured as an open-jet nozzle and formed between two lips. The applicator also includes a coating edge delimiting apparatus with at least two coating edge delimiting elements that are arranged between the two lips and close off the dosing slot on its side edges, substantially sealing it.

Abstract: A hopper bar having a longitudinal channel formed in the portion of the bar which normally would support a coating lip wherein a wall of the channel is a precision cylindrical locating pin, and has a replaceable hopper lip element, formed to fit within the channel, is provided with a precision round bushing for receiving the locating pin such that upon assembly of the element to the hopper there is no offset significant to the coating process between the slide surface of the hopper bar and the slide surface of the lip element. The lip element may be attached to the hopper wall along the remainder of their mutual length by either bolts or magnets to permit independent longitudinal thermal expansion of the hopper bar and lip element.

Abstract: A paste dispensing system for dispensing paste to a substrate such as a ceramic greensheet or other electronic component substrate comprises a reservoir for holding the paste and a nozzle housing in fluid communication with the reservoir and having an opening therein through which the paste is dispensed. The nozzle housing has disposed therein a rotatable slotted shutter which is in fluid communication with the reservoir and which has an auger disposed in the shutter. The auger when actuated, draws paste from the reservoir into the shutter, advances the liquid material through the shutter and circulates the paste back to the reservoir. When it is desired to dispense the paste, the shutter is rotated so that the slot in the shutter communicates with a slot in a nozzle plate connected to the nozzle housing through which slot the paste is dispensed. The paste is continually circulated through the paste dispensing system by the auger whether or not paste is being dispensed.

Abstract: A process of coating a heat-conductive strip article, e.g. aluminum or aluminum alloy strip used in the automotive industry, with a solid wax-like coating material, preferably a wax-type lubricant. The process involves heating a solid wax-like coating material that melts in a temperature range of about 30 to 100.degree. C. to form a melt having a viscosity in a range of about 50 centipoise or less and flowing the melt onto a moving surface of the strip article through an elongated slot in a movable coating head having an extended surface adjacent to the slot to form a coating layer on the article. The coating head is pushed towards the surface of the strip article as the melt is flowed as a coating onto the surface from the slot to reduce a coating thickness by pressing the extended surface of the coating head onto the coating as the coating is formed.

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 apparatus and method for preventing plugging of a narrow, slot-orifice-type jet nozzle 6 used in a paper and board coater in which the jet nozzle extends over the entire cross-machine width of the web being coated. The coater has an application chamber 11, a coating mix infeed channel 5 connected thereto and a clot orifice 6 as well as at least one inlet port 13 for feeding the coating mix into the application chamber 11. An easily cleanable strainer element 12 is placed close to the applicator apparatus to separate aggregates of the coating mix that otherwise could plug the slot orifice 6.

Abstract: A slide bead coating method and apparatus which is able to form a stable bead over the width of coating solutions and regularly coat the coating solutions on a web to an edge region and which is able to change the width of the coating solutions without stopping the coating operation even if the width of the web changes. A discharged liquid from a nozzle is applied on both side edges of the coating solutions flowing down a slide surface. Thereby, the stable bead can be formed at the side edges of the coating solutions, so that the coating solutions can be coated on the web to the edge region. Edge bead is formed at both side edges of the coating solutions through the nozzle, so that the width of the coating solutions can be adjusted.

Abstract: The present invention comprises an apparatus for making a selectively-coated web. The apparatus comprises a coating means for applying a coating to a web in a plurality of coated regions, the coated regions being in spaced, parallel relationship to a plurality of uncoated regions. The present invention further comprises support means for supporting the web after coating, the support means comprising a plurality of support members, each of the support members being in registry with an uncoated region. In a preferred embodiment the coating of a beneficial emulsion is applied in selected regions by extrusion. A method of forming a coated web without producing buildup of coating material on idler rollers is also disclosed.

Abstract: An applicator for direct or indirect application of a liquid or pasty coating medium onto a traveling fiber material web, notably of paper or cardboard, includes at least one metering system with a metering slot configured as an open-jet nozzle and formed between an approach-side lip and a departure-side lip. The applicator includes at least one guide surface bordering on the exit of the metering slot and intended for the coating medium issuing as an open jet out of the metering slot. The length of the guide surface is adjustable in at least one direction substantially parallel to the flow direction of the coating medium along the guide surface.

Abstract: Apparatus for applying uniform layers of adhesive to contoured surfaces of a substrate comprises, in one embodiment, a die head mounted to an adhesive dispenser and having contoured first and second die faces offset relative to each other. One of the die faces is operable to contact the contoured surface of the substrate, and a contoured slot outlet in fluid communication with the adhesive dispenser is disposed between the die faces for applying adhesive material to the contoured surface of the substrate. In another embodiment of the invention for simultaneously applying adhesive to multiple non-coplanar surfaces of a substrate, the die head comprises multiple non-coplanar die faces, each having first and second die face portions offset relative to each other. One of the die face portions of each multiple die face is operable to contact a respective non-coplanar surface of the substrate.

Abstract: An applicator for direct or indirect application of a liquid or pasty coating medium onto a traveling material web includes a metering system with a metering slot configured as a nozzle and formed between an approach-side lip and a departure-side lip. The applicator also includes, disposed opposite the nozzle, a traveling countersurface on which the coating medium issuing out of the metering slot is to be applied. The exit of the metering slot is followed by a transfer blade for the coating medium, arranged on the approach-side lip. The transfer blade has its length, with respect to the countersurface, selected such that the transfer blade in its operating position contacts the countersurface. The transfer blade passes the coating medium along its departure-side surface from the exit of the metering slot onto the countersurface.

Abstract: A coating insert used within a coating assembly for defining at least one edge of coating fluid as it is applied to a substrate moving past the coating assembly is disclosed. The coating assembly includes a trough having first and second transverse ends. At least one coating insert is inserted within the trough to define an edge of coated fluid on a substrate. The coating insert, having one or two edge-defining surfaces, is positioned within the trough. The first end of the edge-defining surface is closer to the adjacent transverse end of the trough than the second end of the edge-defining surface. The top face of the coating insert may also include a second edge-defining surface having first and second ends that may define another edge of coated fluid on a substrate.

Abstract: An extrusion coating apparatus including a body having a liquid dispensing passage for dispensing a coating liquid on a surface of a sheet, the liquid dispensing passage being connected to a manifold formed inside the body, and a hollow core which is disposed in the manifold at a predetermined distance apart from the manifold and includes in the longitudinal direction thereof, a slit through which the coating liquid supplied into the hollow core is uniformly extruded. The apparatus dispenses a coating liquid at a constant pressure to the surface of the sheet through the hollow core, the manifold, and the liquid dispensing passage so that a coating layer having a uniform thickness in the longitudinal and transverse directions thereof is formed on the surface of the sheet. The apparatus can adjust the thickness of the coating layer, and can be easily handled.

Abstract: The present invention is an apparatus for curtain coating a composite layer formed from a plurality of coating compositions onto a moving receiving surface. Edge guides comprising two thin, parallel and closely spaced wires maintain the horizontal extent of the free falling curtain. A flushing and lubricating liquid is supplied to the edge guide. The present invention comprises a distribution body for delivering the flushing and lubricating liquid in laminar flow without initiating stationary waves in the curtain that lead to objectionable coating nonuniformities. The distribution body allows for replacement of the wires without its removal or disassembly. A horizontal conduit near the top of the curtain has an outlet face in contact with the wires that tapers in the upward and downward directions to horizontal edges. The wires pass across the outlet opening within its horizontal diameter. The upper edge of the outlet face positions and supports the wires.

Abstract: This invention intends to provide a coating device capable of forming, in a good work efficiency, a magnetic layer whose surface is free from irregularities in thickness and is flat. The above object is achieved by providing a device wherein a magnetic paint 3A is coated through an extrusion die 1, and, downstream of the die and close to the non-coated side of a substrate 19, a magnetic field generator 12A with a laminated structure composed of plate-like magnets 15 packed in layers is placed inclined by 45.degree.-85.degree. with respect to the running direction R of the substrate. Through this arrangement, the coated surface of magnetic layer 3 will be free from thickness irregularities and be flattened.

Abstract: A method and apparatus for depositing precisely metered quantities of an emulsion on a surface are disclosed. The method and apparatus are particularly useful for assembly of reversible clinical thermometers. The apparatus involves (a) at least one cartridge having a volume containing the emulsion composition; (b) at least one piston associated with each cartridge for collapsing the volume under a controlled pressure; (c) at least one tubular needle for receiving a flow of emulsion composition from each cartridge; (d) a fluid connection between each tubular needle and each cartridge for delivering the emulsion composition from each cartridge to each needle; and (e) a valve for each fluid connection.

Abstract: A fountain applicator for applying coating liquid onto a web of paper carried past the applicator, has a coating liquid flow path that includes a curved surface along which a sheet of the coating liquid is flowed to subject the sheet to centrifugal force to cause air entrained in the coating liquid to move away from one side of the sheet that is toward the curved surface, so that the one side is relatively free of entrained air. After being flowed along the curved surface, the sheet of coating liquid is directed toward the web in a free standing jet curtain of coating liquid, to contact the web surface primarily with the one relatively air-free side of the coating liquid sheet to decrease the occurrence of skip coating on the web surface, especially when the web is traveling past the applicator at high speeds. The coating is applied in excess onto the web surface and is metered and leveled to a desired coat weight by a downstream doctor.

Abstract: In an apparatus and method for forming an applied layer of a photosensitive resin on a large glass substrate for an LCD color filter, a substrate (S) is suctioned and held by a movable holder (8) with a main surface thereof to be processed oriented downward. The movable holder (8) is at an angle of inclination (.theta.) to the horizontal and is capable of moving along a guide rail (7). An application head (H) having an upward-pointing linear slit (13) through which an application liquid is supplied is provided below a region through which the substrate (S) moves supported by the holder (8). When the substrate (S) having a constant clearance (I.sub.2) with the application head (H) is moved diagonally upward, an application liquid bead (B) is formed between the slit (13) and the downward-pointing main surface of the substrate (S), by surface tension. The application liquid bead (B) is moved gradually diagonally downward along the main surface of the substrate to form an application layer (Ra). A meniscus (L.

Abstract: A recording medium particularly suitable for electrophotographic copying is characterized by coated paper that for a given basis weight has proportionally less coating and proportionally more fiber than conventional coated paper made for electrophotographic processes. The base sheet of the coated paper is preferably formed square on a paper machine wet end and has on the order of 40-50% less filler than conventional sheet paper made for electrophotographic processes. After being formed and dried, the base sheet is provided with a top coat weight that is approximately 60% less than the typical coat weight used for conventional paper. The coating is formulated to have sufficient viscosity to stay more on the surface of the base sheet. The coated sheet is calendered to a medium gloss on the order of a 75.degree. TAPPI gloss of about 45, both to preserve a degree of surface roughness to enhance runnability of the paper through an electrophotographic copier and to provide a pleasant and easily readable surface.

Abstract: An apparatus for successive application of two coats of at least one coating medium on one side of a traveling fiber material web includes a rotating backing roll and a first rotating applicator roll having a roll surface. The first applicator roll and the backing roll define a first press nip therebetween. A first applicator assembly is positioned in association with said roll surface for applying a first coating medium to the roll surface. The first applicator assembly and the first applicator roll conjunctively define a first indirect applicator for applying the first coating medium to a first side of the fiber material web. A first drying apparatus is positioned after the first press nip relative to a direction of travel of the fiber material web. The first drying apparatus is positioned in association with the first side of the material web. A second applicator is positioned after the first drying apparatus relative to the direction of travel of the fiber material web.

Abstract: A coating method and coating apparatus capable of providing a coated film of improved surface properties free from any streak and color shading and facilitating coating on a sheet of an increased width without causing enlargement of the apparatus and thus complicating its structure. A swirling motion imparting mechanism and an orifice are arranged at a connection between a liquid feed pipe and a coater. Swirling motion is imparted to coating liquid discharged from a pump and then a flow velocity of the coating liquid is immediately increased to a level as high as 200 cm/s or more, the liquid then being fed into a pocket of the coater within 0.1 second or less. This permits shearing to act on the coating liquid, to thereby effectively prevent a variation in viscosity of the coating liquid and flocculation thereof, so that the coated film may be improved in surface properties.

Abstract: A method and apparatus for applying a coat mix to a high-speed running board or paper web by accurately premetering and pre-smoothing the applied coat with an applicator apparatus and then minimally doctoring the applied coat with an air knife. The applicator apparatus has a narrow slot-orifice extending in a cross-machine direction for facilitating high-speed laminar flow of coating mix into a gap region defined by confronting surfaces of the applicator apparatus and the web. The applicator apparatus has a member for directing the ejected coating mix in the gap region in a direction reverse to a travel direction of the web so that only a predetermined portion of the ejected coating mix is allowed to form an applied coat on the web. This accurate premetering of the coating mix by the applicator apparatus permits an operator to readily optimize the subsequent process of doctoring the applied coating with an air knife.

Abstract: A coating system of a liquid to a sheet material. The system includes a tank 1, a feed pump 4, a feed control valve 8 including a liquid drawing or sucking back mechanism, and a slit die 9 for applying the liquid to the sheet, which are connected with each other by means of a first, second and a third feed conduits 3, 5 and 7. A first return conduit 11 with a return control valve 10 and a second return conduit 12 are provided between the feed pump 4 and the feed control valve 8 for returning the liquid to the tank 1. Electromagneticvalves 15 and 17 operated by a control apparatus 22 are provided for switching instantaneously the conduits between the feed control valve and the return control valve 10.

Abstract: A short dwell coater and film applicator coating has an application chamber between an inlet overflow baffle plate and a final metering element. An adjustable wedge is spaced in the machine direction from a fixed wedge to define a gap which serves as a coating extraction port. A cylindrical rod is positioned in the extraction port which is about 3/8th to about two inches in diameter and is driven to rotate at a rate of between one and one-hundred rpm. The rod serves to extract air and coating from the application chamber. Alternatively, an adjustable plate may be positioned to obstruct an opening leading to the extraction port.

Abstract: An apparatus and method for treating the walls of apertures passing through a planar substrate with a fluid treatment solution. The method comprises placement of a pressurized fluid wedge beneath, above, or both beneath and above a planar substrate as it passes through a treatment chamber. The apparatus that forms the fluid wedge is a roller assembly comprising a roller within a shroud which carries fluid as it rotates through a gap between the roller and the shroud. The roller provides the dual function of forming the fluid wedge and conveying the planar substrate through the treatment chamber.

Abstract: A coating apparatus including a slit die 4 for applying a liquid to a surface of a resin film. The slit die 4 ha a die body which is rotatable between an operating position whereat an injection nozzle 13a of the slit die 13 faces a back-up roller 2 for feeding the resin film 50 and a rest position where the nozzle 13a is spaced from the resin film or foil 50. A cleaning device is provided having a roll 40 of a cleaning sheet 41, a take-up roller 23 for taking up the cleaning sheet, and a cleaning roller 24, on which the cleaning sheet moves. The cleaning sheet 41 on the cleaning roller 24 faces the injection nozzle 13a of the slit die when the latter is in its rest position for executing a cleaning operation. After an application of the liquid to a front surface of the resin film, the liquid is also applied to a rear surface of the film, so that the applied layers 50a on the front surface are registered with the applied layers 50b on the rear surface.

Abstract: A coating apparatus comprises a head (25) having opposite edges (6, 7) cooperating with each other to provide an outlet (4a) of a coating liquid supply slit (4), and opposing portions (23a, 23b) between which a longitudinal recess (28) is formed, and a plurality of adjusting devices (30) having opposite ends (31, 32) engaged with the opposing portions of the head. A pulling or compressive force is developed between the opposite ends of each adjusting device so as to adjust the clearance (D) of the opposite edges. The adjusting means are movable in the longitudinal direction of the apparatus with their ends being engaged with the opposing portions of the head.

Abstract: An apparatus that comprises a body including a reservoir adapted for receiving a quantity of fluid and a plurality of fluid distribution channels each having a length and a cross-sectional area and being in fluid communication with and extending from the reservoir from a first end and terminating at a second, distal end in an orifice. The apparatus further comprises a distribution chamber in the body for commonly receiving the fluid exiting each of the orifices, for merging the fluid exiting each of the orifices into at least one continuous coating stream, and for equalizing the pressure of the fluid, the distribution chamber having a first side in fluid communication with the plurality of fluid distribution channels and a second side that is open to allow the fluid to exit the body for uniform distribution onto the web.

Abstract: A coating hopper (10) for coating a radiation-sensitive emulsion on a photographic support (24) is fabricated from hopper bars (12) comprising an inlet slot (16) and a discharge slot (18), said bar (12) comprising a body and hopper lip (22), wherein the body of the bar comprises a metal or metal alloy and the lip area comprises a ceramic insert (30) with a high elastic modulus and low density. The hopper with the ceramic insert prevents the formation of streaks in the emulsion coating layer or layers on the support.

Abstract: The invention relates to an application unit for the direct or indirect application of a liquid or pasty medium (12) onto a moving material web, in particular consisting of paper or board, comprising a dosing gap formed as a free jet nozzle, the dosing gap being formed between a leading lip (4) and a trailing lip (8), and at least one feed channel (14) leading to the dosing gap. The application unit is characterized in that the dosing gap is subdivided in a comb-like manner and has a plurality of defined through-gaps (32) for the liquid or pasty medium (12).

Abstract: Tubelining device and technique using a coating-applicator for slip-casting a fluent liner coating onto the internal surface of a tube.

Abstract: A cross-head die for applying one or more layers of coating materials to a single, longitudinally fed, filamentary member, or to a plurality of such members in spaced, side-by-side relation. Tip and die members of relatively flat, wafer-like configuration are placed in a cylindrical cavity of the body member of the apparatus with central openings in each of the tip and die members coaxially arranged and a protrusion surrounding the opening in the tip extending into the opening in the die. Flowable coating material is injected through a radial opening in the body member and flows in both directions about an annular passageway formed by cooperatively arranged grooves in the peripheries of the tip and die members. The coating material flows from the annular passageway to the die aperture through opposing, spaced, angularly arranged surfaces on the tip and die members.

Abstract: A process and apparatus for coating a surface of an elongated strip article, e.g. aluminum sheet, with a layer of solid polymer material. The process involves heating the polymer to produce a melt having a viscosity of at least 1000 centipoise when measured according to ASTM D4440 at 1 radian per second, extruding the melt onto a moving surface of the strip article through an elongated slot in a coating head having an extended surface adjacent to the slot arranged at an angle to the moving surface to form a coating gap converging in the direction of movement, thereby forming a coating on the strip article, and pushing the coating head towards the surface of the strip article as the melt is extruded as the coating onto the surface from the slot to reduce the coating thickness to a desired range by pressing the extended surface of the coating head onto the coating as the coating is formed.

Abstract: An improved applicator die for alternately depositing different liquid coating materials on a moving web comprises a die body having switch bars for opening and closing respective flow passageways for supplying the different liquid coating materials to an elongated coating orifice from respective manifolds. The switch bars, flow passageways and manifolds are substantially as wide as and substantially parallel to the coating orifice of the die whereby changeover between different coating materials can be made very rapidly.

Abstract: Precise control of the wetting of an edge guide by a coating fluid (i.e., the wetting profile) can be achieved by providing a wetting line below which the coating fluid will wet the surface of the edge guide. Preferably, the height of the wetting line corresponds to a predetermined depth profile of a coating fluid flowing down a coater face. Optionally, a non-wetting surface can be provided above the wetting line, and the non-wetting surface can optionally have a low energy coating provided thereon.

Abstract: Disclosed is a coating die for coating a web with a solution, wherein the web is conveyed in a predetermined direction so as to run in the vicinity of the coating die; comprising;a body forming the coating die,a coating surface provided on the body at a position close to the running web;a solution chamber provided in the body;a feeding conduit provided in the body, wherein the solution is fed from the outside of the body to the solution chamber through the feeding conduit;a slit provided in the body so as to connect the solution chamber and the coating surface, wherein the solution is fed from the solution chamber to the coating surface through the slit, and then the solution is transferred from the coating surface to the running web;a dry surface provided on the body and positioned upstream of the coating surface in terms of the web-running direction; anda polymer layer formed on at least one of (1) the dry surface, (2) an internal surface of the slit, and (3) internal surfaces of the solution chamber and th

Abstract: A novel apparatus for compressing viscous material through openings in a stencil is disclosed. The novel apparatus has a compression headcap which provides a contained environment to direct and to aid the flow of pressurized viscous material through the openings in the stencil. The compression headcap includes two generally parallel wiper blades that are biased into sliding communication with the stencil. Longitudinal diffuser plates guide and equalize the flow of the viscous material into the volume between two generally parallel wiper blades.

Abstract: The invention involves a fluid treatment device to solution or melt impregnate a resin or polymer or any combination thereof into a reinforcement which can be utilized to fabricate composite materials for laminates, circuit boards, structural/aerospace materials, automotive components, etc. The invention offers significant advantages and benefits over existing methods and equipment and allows the impregnation process to be performed at lower cost and higher efficiency with increased environmental safety.

Abstract: Roll 13 drives base material 12 run continuously, and nozzle 1 applies paint 11 supplied by head 2 on base material intermittently. Head 2 shuts the flow of paint 11 to nozzle 1, when application of paint 11 is suspended, and guides to a place other than nozzle 1, at the same time sucks paint 11 staying in the inside of nozzle 1 and at the exit of slit 7 to sucking part 25 provided in inside of nozzle 1; when application of paint 11 is resumed, releases the flow of paint 11 to nozzle 1, at the same time returns paint 11 that was sucked in sucking part 25 to the inside of nozzle 1; thereby the starting edge and the ending edge of coated areas intermittently applied on the base material can be made to assume a straight line shape, and occurrence of the thicker coating at the starting edge is also prevented.

Abstract: A method and apparatus for coating a traveling paper web includes a coating applicator disposed in movably-controlled spaced adjacency with the paper web, which is supported on a rotating backing roll. The coating applicator permits a controlled introduction of a fresh portion of an aqueous slurry of coating material which is mixed with a recirculated portion of coating material in a controlled manner to prevent the formation of large vortices within the coating applicator. The coating material flows successively through mixing, convergent, and recirculation channels, all of which are defined on one side thereof by a distinct surface of a flow stabilizer which is positioned centrally in a cavity in the coating apparatus.