Abstract: The present invention is a criss-cross flow hopper which provides even fluid distribution. The flow hopper includes the first and second hopper half each having a planar surface and a cavity which cooperate to form an inner chamber and an exit slot. A first and second insert are securable to each hopper half in the cavity. These non-contacting inserts form within the chamber first and second half flow slots which direct fluid away from the exit slot but then the fluid combines in a damping chamber bounded by the inserts. The fluid is then directed to the exit slot to the substrate to be coated.

Abstract: A slide-bead coating technique utilizes an inclined slide surface terminating at a coating lip. A continuous liquid layer is supplied to the slide surface from a supply source so as to form a liquid bridge between the coating lip and a substrate disposed adjacent the coating lip. The substrate is conveyed past the lip and continuously depletes liquid from the liquid bridge onto the substrate. The technique includes supplying an air flow that impinges upon an upper surface of the liquid layer opposite the slide surface between the liquid supply source and the coating lip.

Abstract: A criss cross coating hopper 10 is provided which is capable of producing uniform flow distribution patterns. The hopper 10 is comprised of a first and second hopper halves 12,14. First and second hopper halves 12,14 each have a first and second planar surface 20,40, respectively, adjoining a first and second cavity 22,42, respectively, each cavity 22,42 having a land surface 28,50 near the entrance end 26,48 and exit end 24,46. Inserts 62,64 are positioned against the land surface 60 of the first hopper half 12 and the land surface 50 of the second hopper half 14, respectively. The first and second hopper halves 12,14 and the inserts 62,64 cooperate to form an exit slot 69 recessed into first and second planar surfaces 20,40.

Abstract: In a coater for applying a liquid onto a surface of a moving object, the coater includes a front edge surface, a back edge surface and a slit, wherein the back edge surface has an entrance edge from which the coating liquid is introduced into a gap between the back edge surface and the surface of the object and an exit edge from which the extruded coating liquid leaves the gap with the movement of the object. The back edge surface further is arranged in relation to the object so as to satisfy following two formulas; 1.0 mm.ltoreq.L.ltoreq.30 mm and 1.8.ltoreq.h/h.sub.0 .ltoreq.3 where L is a length of a contour of the back edge surface projected on the surface of the object between the entrance edge and the exit edge; h is a gap distance at the entrance edge; and h is a gap distance at the exit edge.

Abstract: The present invention is a method for coating a plurality of coating compositions onto a moving support while minimizing the time required to switch from one coating composition to a different coating composition. The method involves supplying a first coating composition to a hopper at a first flowrate. When the switch is made to an alternate coating composition, the alternate coating composition is supplied to the hopper at a second flowrate while coating composition is removed from the hopper at a third flowrate equal to the first flowrate subtracted from the second flowrate. After sufficient pumping the alternate coating composition is supplied to the hopper at the first flowrate and no coating composition is removed from the hopper.

Abstract: An extrusion-type application device with which a liquid can be very rapidly applied to a carrier to form a thin layer thereon without causing streaking in the applied layer. The liquid is continuously expelled from the outside part of a slot to the surface of a flexible carrier continuously moving at a speed of 300 m/min or more along the surface of a back edge portion and the surface of a doctor edge portion so that the liquid is applied to the surface of the carrier. The surface of the doctor edge portion is curved, the inner longitudinal edge B of the surface of the back edge portion is located at the outlet of the slot so that the angle .theta..sub.1 between a tangent to the surface of the back edge portion at the inner longitudinal edge B and a tangent to the surface of the doctor edge portion at the outer longitudinal edge A of the surface of the doctor edge portion and the angle .theta..sub.

Abstract: A device for applying fluid to a substrate which includes a head member having first and second opposed portions adapted for being fixedly positioned relative to each other. The device is particularly suited for treating a substrate as the substrate moves between the first and second portions. Each portion may in turn include a first channel located at a predetermined distance from the substrate for having a first fluid impinge on the substrate at a first velocity. Additionally, each portion may include a weir adjacent the first channel for having fluid pass thereover at an accelerated rate and thus at a greater velocity than the first fluid, this weir being located at a lesser distance than the first channel. Fluid inlet means is coupled to the respective portions to provide the fluid thereto at desired velocities. Significantly, a fluid blocking means (e.g., an elongated bar) is also included as part of the structure for maintaining the fluids at pre-established levels.

Abstract: A breathable laminate comprises at least two porous webs laminated together with a porous adhesive matrix, preferably a random fibrous adhesive pattern having a coat weight of between 1.5 and 12 grams per square meter. The two or more porous webs comprise woven or non-woven materials and the resulting breathable fabric or laminate has good hand and flexibility. Breathable fabric is adhered to foam by such random fibrous adhesive patterns of similar coat weights. Coating widths of up to 80 inches or more are produced in a slot die fed by a selected plurality of recessed lands within the die, with motors and pumps controlled to maintain consistent, uniform coat weights regardless of coat widths and substrate speeds selected. Single ply coated webs, apparatus and methods are disclosed.

Abstract: A process and apparatus for the hermetic adhesive bonding of plastic casing parts of a battery or of a galvanic cell. The casing comprises a plastic casing container and a top or bottom of the same type of plastic, preferably of polyamide, which are adhesively bonded to each other by means of a pair of joining surfaces. For adhesive bonding, the joining surface of one of the two parts is wetted at specific locations with a solvent dissolving the plastic, preferably with formic acid, over a time period of 5 to 7 seconds. The joining surface is aired at room temperature in still air over a time period of about 15 to 25 seconds, and the casing parts are then joined to each other and pressed together with pressure maintained over a time period of about to 5 to 10 minutes.

Abstract: A coating apparatus for coating a predetermined amount of a coating liquid uniformly onto a continuously running web, said coating apparatus being formed of a ceramic material obtained by sintering at a temperature of not less than 1,000.degree. C., said ceramic material having a coefficient of linear thermal expansion of not more than 11.times.10.sup.-6 /.degree. C. at temperatures of 25.degree. to 500.degree. C., and said ceramic material having a Vickers hardness of not less than 700 kg/mm.sup.2.

Abstract: A doctor blade for an inking unit of a rotary printing press utilizes one or more plates or elastic bars to limit whirl flow of the ink in the distribution chamber. The plate and/or elastic bar partially divides the ink chamber. As a result, the creation of whirls is controlled and limited.

Abstract: Apparatus for applying an anaerobic adhesive to the inside of the necks of cartridge cases preparatory to insertion of bullets therein to provide a seal between the inside of the necks and the bullets, the cases being held standing on end, mouth end up, in a holder arranged in a rank and file format, the holder being indexed to bring successive rows of cases under a set of adhesive dispensing nozzles which are lowered for entry of the tips of the nozzles into the upper ends of the cases in a row.

Abstract: The invention relates to a coating device for coating, e.g. a size-press roll, paper or board or of an equivalent moving base. The coating device comprises a revolving coating bar which rests against a moving base. The coating bar extends across the machine width, and is supported in a cradle substantially over its entire length. The coating bar is fitted to spread and to smooth the coating agent onto the moving base which coating agent is introduced into the coating device in the direction of running of the moving base before the coating bar. The coating bar in accordance with the invention is a smooth bar of large diameter, which is fitted against the moving base so that the profile of coating quantity can be controlled.

Abstract: The apparatus includes a molten material cladding apparatus comprising a crucible and a molten material dispensing tool engaged therewith. The crucible and molten material dispensing tool form a chamber to retain molten material, the molten material flowing through passageways in the molten material dispensing tool to form menisci in a bore thereof. An extrusion passing through the molten material dispensing tool punctures the menisci, wherein molten material flows through the molten material dispensing tool and clads the outer surface of the extruded product passing therethrough. By using menisci of molten material, a smooth surfaced, uniform thickness clad product is produced having a wide range of cladding thicknesses.

Abstract: A process and apparatus for producing a laminate of metal and a polymeric film such as polypropylene bonded to a metal substrate such as steel or aluminum strip, preferably electrolytically chromium coated steel for making can ends, comprises laminating a polypropylene film to the metal and subjecting the film to a temperature above its melting point, and then uniformly and rapidly cooling the laminate to a temperature substantially below the melting point of the polypropylene by flooding the polypropylene coated surface of the laminate with cold liquid, e.g., water at room temperature.

Abstract: A bump having a shape adapted to bonding of a flip chip method and an enough volume is efficiently accurately formed at low costs. By applying a pressure into a chamber, a fused solder 8 in the chamber 1 is extruded from a micro opening 3 and adhered onto a pad 12. After that, by eliminating the pressure, the fused solder is separated by the surface tension of the fused solder itself and is allowed to remain as a solder bump onto the pad.

Abstract: An adjustable nozzle applicator and method for the application of liquid to a surface including a main nozzle member and an insert nozzle portion positioned therein. The bottom floor of the main nozzle member is configured to form a trough for channeling and directing the liquid. The insert portion encloses part of the trough and is disposed adjacent but not touching a wall of the main nozzle member to create an output aperture port. At the output aperture port, the liquid exits the aperture in a fashion resembling a waterfall without the use of any input pressure. Such a gentle waterfall flow of liquid is particularly useful for the application of liquids that are delicate in nature. Overflow liquid exits through the floor of the applicator. The width of the waterfall at the output may be varied by adjustment of the distance between the main nozzle member and the insert portion for precise control of the flow and application of the liquid.

Abstract: A coating method and apparatus employing an extrusion-type coating head in which the probability of damaging the surface of the layer being formed on a support is remarkably decreased. Coating solution, such as a magnetic solution for forming a magnetic recording tape or the like, is supplied by a pump through a pipe line and then a filtering element to the extrusion-type coating head, which applies the coating solution directly or through a coating roll onto a running support. The filtering element, which is disposed at or near the coating solution supplying inlet of the extrusion-type coating head, has openings whose diameter is smaller than a coating clearance between a doctor edge of the extrusion-type coating head and the support or coating roll.

Abstract: An apparatus for applying a heat responsive melt sealant to the side edge of a carton, such as a gable-top liquid carton prior to folding the carton into its tubular form. The apparatus forces the sealant to flow evenly along an edge of the carton to be sealed and confines the sealant adjacent to the edge. The apparatus has a reverse C-shaped channel through which the carton blank edge is fed and a duct opening in the bight portion of the channel through which the sealant is fed onto the carton blank edge. In the process of the invention, after the heat responsive melt sealant is applied to the interior edge of the carton blank, the latter is conveyed to a heat station where the heat responsive melt sealant is cured preparatory to final erection of the tubular carton.

Abstract: The invention involves a process for foam treating pile fabrics, especially carpets, by applying a foam composition through the backing of the fabric. The fabric is wrapped partially around the foam applicator at a wrap angle of at least 60 degrees, while the facing of the fabric is free of pressure. A foam applicator is also taught.

Abstract: The apparatus serves for treatment of the undersides of skis and comprises a housing (1) which can be entered by the skier with strapped-on skis, comprising a treatment arrangement for cleaning, drying, wax application and heating. Supports or backup organs are provided which support the skis (22) during the treatment of their underside, as well as a driving arrangement for generation of a relative motion between the underside of the skis and the treatment arrangement. Support organs are formed by freely rotatable rollers arranged to be parallel to each other. Their axes (11) are held on their ends in an essentially horizontal guide (9) and are connected with the chain-like conveyor members (8). The treatment arrangement or the frame (13) supporting same is also connected with the chain-like conveyor members (8).

Abstract: A method for applying a coating liquid and a method for forming a coating liquid application device are taught. According to the method, a portion of an applied liquid supplied into a liquid reservoir is drained from one end thereof, and the other portion of the liquid is continuously discharged from the outlet portion of a slot which faces the surface of a flexible band-like carrier moving continuously so as to form a thin film of liquid on the surface. In this liquid application device, the diameter D of the reservoir, the width d of the slot, the depth L.sub.1 of the slot from the reservoir to the outlet portion at the applied liquid supply end of the reservoir, the depth L.sub.2 of the slot from the reservoir to the outlet portion at the applied liquid drain end of the reservoir, the length W of the outlet portion, the viscosity .eta..sub.p of the liquid in the reservoir, the viscosity .eta..sub.s of the liquid in the slot, the supplied quantity Q.sub.1 of the liquid and the drained quantity Q.sub.

Abstract: A slide coating apparatus includes at least one slide surface disposed along a top portion of a front plate supported by a platform. A fluid supply cavity for supplying a coating fluid to the slide surface is formed at the juncture of a side surface of the front plate with a side surface of a back plate contiguous with the front plate and moveably supported by the platform. A biasing plate applies force to the back plate to maintain the back plate contiguous to the front plate. The invention includes apparatus for moving the back plate away from the front plate to a first cleaning position along a direction substantially parallel to the slide surface. The moving apparatus comprises at least one actuator assembly connected between the back plate and the platform for effecting linear movement along a direction substantially parallel to the slide surface.

Abstract: An application device capable of very rapidly applying a liquid in the form of a thin film to a continuously moving flexible carrier in such a manner as to avoid corrosion and wear to the surface of the doctor edge portion of the application device to thus avoid the formation of streaks on the surface of the applied liquid. A clearance between the surface of the carrier and the surface of the doctor edge portion is made larger at the downstream end of the surface of the doctor edge portion than at the upstream part thereof. For this purpose, a support roller is provided near the downstream end of the surface of the doctor edge portion so that the clearance between the surface of the doctor edge portion and the surface of the carrier can be appropriately controlled along substantially the entire width of the doctor edge portion by adjustably displacing the roller.

Abstract: An application device for applying a coating liquid to a moving web which forms an applied layer of uniform thickness and with smooth surface properties. The sides of a slotted portion of an extrusion-type application head are provided with sloped or stepped portions in regions adjacent liquid-free areas of the web. This prevents scratching of the web and accumulation of extraneous matter at the edge portions of the application head.

Abstract: A method of applying a liquid to a flexible substrate and more particularly to a method in which a magnetic liquid or the like is applied to a flexible area so that a thin liquid film is disposed on the carrier for manufacturing an application-type magnetic recording medium. The method includes positioning carrier and a back edge portion of an application head near each other, discharging the liquid from a slot provided in the head and lapping the carrier and the doctor edge portion of the head, located downstream of the slot, with each other at a predescribed lap angle for the application, and thereafter performing the application. The method further includes moving a path roller which is disposed upstream of the head and to adjust the lap angle, discharging the liquid from the slot of the head and moving the carrier to the head. According a further aspect of the invention, a downstream roller is moved in the direction of the carrier to further adjust the lap angle of the doctor edge portion.

Abstract: A short dwell coater apparatus is disclosed for applying coating material onto a web guided by a backing roll. The apparatus includes a coater housing which is disposed in close proximity to the backing roll. The arrangement is such that the web guided by the backing roll moves between the backing roll and the housing. The housing defines an application chamber which is open towards the web and which extends along the web in a cross-machine direction. The application chamber is connected to a source of coating material such that the coating material is applied to the web during movement of the web past the chamber. The coater housing has an upstream lip which is disposed upstream relative to the chamber and adjacent to the web. The lip defines an upstream coating overflow for permitting excess coating material to flow therethrough. A flexible coater metering blade is disposed downstream relative to the chamber.

Abstract: A position setting apparatus for positioning a drum so that it may be uniformly coated with a photosensitive coating liquid to produce a photoreceptor, wherein the position of the drum is set by centripetally blowing a pressurized fluid from a fluid outlet means directly against the drum. The drum is positioned by the balance of the pressure of the blown fluid, and the surface of the drum is thereby protected from scratching as no mechanical device is required to touch the drum during positioning.

Abstract: A method and device for applying liquid, pasty or plastic substances, in particular thermoplastics, through perforations of a cylinder, belt or the like to a substrate, in particular a textile fabric, wherein the belt or the like encloses an interior space which is evacuated, preferably continuously, during the coating operation.

Abstract: A method and apparatus of applying a coating to a substrate is provided. A liquid resin is introduced into a first region at a predetermined pressure. The liquid resin is maintained within a first pressure range in the first region. Next, the flow of the resin from the first region to a second region is controlled so as to bring the resin from the first pressure range to a second pressure range, the pressures in the second pressure range being lower than the pressures in the first pressure range. The liquid resin is then applied at a pressure within the second pressure range to the substrate at a third region adjacent the second region.

Abstract: A short dwell coater apparatus is disclosed for the application of coating material to a web which is supported by a backing member. The apparatus includes a housing which is disposed closely adjacent to the backing member such that the web moves between the housing and the backing member. The housing defines an application zone which is connected to a pressurized source of the coating material. The application zone has an open face towards the web. A blade is adjustably secured to the housing and extends from the housing towards the web. The blade defines a downstream extremity of the application zone. A movable flow divider supported by the housing extends into the application zone. The divider has an upstream and a downstream end, with the downstream end being movably disposed in the vicinity of the blade for reducing the size of a flow vortex generated within the application zone due to movement of the web past the open face.

Abstract: A fountain for applying a coating color on a surface of a web which is engaged with a backing roll for movement of the web is supported by an application adjusting mechanism such that the fountain can be angularly adjusted around a tip of the fountain, so that the fountain angle can be adjusted without changing a gap between the tip of the fountain and the surface of the web. The application adjusting mechanism may be installed on a dwell time adjusting mechanism which is pivoted around an axis of the backing roll so that the dwell time can be adjusted without changing the gap between the tip of the fountain and the surface of the web as well as the fountain angle.

Abstract: Disclosed herein is a method of forming strip-shaped electrodes over an end surface of a plate-shaped electronic component and two major surfaces which are in series with the end surface. A slit plate, which is provided with through slits having widths corresponding to the width of electrodes to be formed, is located above an electrode paste bath while an electronic component is arranged above the slit plate so that its end surface extends across the through slits. Before or after this step, the electrode paste is made to swell to a constant level beyond the upper surface of the slit plate, thereby applying the electrode paste to the end surface of the electronic component and the two major surfaces which are in series with the end surface in the form of strips.

Abstract: An apparatus for premetered "patch" coating discrete, incremental surfaces or substrates, such as printed circuit boards, integrated circuits and the like, with a pre-configured layer of a liquid in which a controlled volume per unit area of the liquid is applied to the substrate are disclosed. The liquid is dispensed from an applicator slot that is fluidly coupled to a liquid containing chamber. The volume of the liquid in the liquid containing chamber is varied in order to (1) sharply and distinctly start the coating "patch" by producing a pulse of liquid that flows out of the applicator slot to form a connecting bead of liquid coating on the coating surface and (2) sharply and distinctly terminate the coating "patch" by removing the bead of liquid connecting the applicator slot with the coated surface. The width of the coated "patch" is determined by the length of the applicator slot.

Abstract: A device for dosing coating substances onto a travelling web. A doctor roll has circumferential grooves which are separated from each other by lands. Each of the lands has a surface parallel to the center axis of the roll when viewed in the direction of the center axis. The respective widths of the lands, viewed in the center axis direction, maximally equal the maximum width of the cross section of the circumferential grooves.

Abstract: A coating apparatus for applying coating liquid onto a web which is being transported as wrapped around a backing roller includes a chamber from which the liquid is applied to the web and a blade for scraping the applied coating liquid into a film having a constant thickness. A partition plate divides the inside of the chamber into upstream and downstream sections with respect to the direction of travel of the web. A plate-like body resiliently held in contact with the web is mounted to an upper portion of the partition plate, and a plurality of holes are formed in a lower portion of the partition plate.

Abstract: A coating apparatus is known in which a coating liquid is continuously delivered from the front-end slit of a die nozzle for application onto a base film which constantly runs without being supported from the back. The improvement is made in which the die nozzle has at the film loading side a front lip and at the film unloading side a rear lip provided at least with a convex surface, both of which being arranged in step relationship so that the slit side end of the front lip is set back from the path of the base film to locate lower than that of the rear lip. Thereby, a higher shear force will be exerted on the magnetic coating liquid temporarily trapped in a space defined by the running base film and the slit side end of the rear lip, thus allowing a smooth surfaced coating to be developed of a highly agglomerative coating material.

Abstract: An inking unit uses circumferentially offset elongated flexible doctor blades to form an ink chamber into which the screened surface of an ink roller immerses itself. Free ends of the spaced flexible doctor blades can be forced into or out of contact with the screened roller surface in accordance with the pressure of the ink in the ink chamber.

Abstract: An application device for applying a liquid, such as a photographic photosensitive liquid, to the surface of a flexible carrier that is continuously moving on path rollers, while an outlet portion of a slot of an extrusion-type application head is pushed toward the surface of the flexible carrier. The application head has an outlet portion including two end portions having an intermediate portion therebetween, with the top surface of the intermediate portion horizontally lying below top surfaces of the end portions. As the carrier passes over the outlet portion, a gap between the side edge portions of the carrier and the surfaces of the end portions is less than the width of the gap between the central portion of the carrier and the surface of the intermediate portion.

Abstract: A system and method for dispensing a viscous adhesive onto a glass member to be attached to a vehicle body is disclosed. A reciprocating pump supplies adhesive to a dispensing point, with a pulse dampener member disposed between the pump and the dispensing point. A rolling diaphragm defines two chambers within the pulse dampener member, with the adhesive being communicated into a first variable volume chamber. A pressurized gas force is maintained on the opposite side of the diaphragm from the first variable volume chamber. The pulse dampener member includes a T-connection, with the pump supplying fluid into a first leg, the second leg being connected to the variable volume chamber and the third leg connected to the dispensing point. As fluid enters the first leg, the amount of fluid demanded at the dispensing point moves from the first leg directly into the third leg. Any excess fluid supplied into the first leg moves upwardly into the variable volume chamber through the second leg.

Abstract: This invention relates to an apparatus for coating solder on the outer leads of TAB-type semiconductor devices. The solder coating apparatus comprises a solder tank accommodating a heater, a discharge tank having an open top and a solder inlet opening at a lower part thereof, a square pillar having a top of substantially the same or slightly greater size than a semiconductor element and arranged inside the discharge tank and projecting beyond the open top thereof, and a solder pressure feed screw near the inlet opening of the discharge tank. A film carrying semiconductor elements is intermittently stopped when one of the semiconductor elements arrives above the square pillar. Molten solder is discharged from gaps between the inner walls of the discharge tank and the square pillar onto the outer leads of the semiconductor element positioned over the pillar.

Abstract: Disclosed are apparatus and method for bead coating a web with liquid composition with a pressure differential applied across the bead of composition between the lip of the slide hopper and the web. An enclosure is disposed under and open to the bead. Vacuum is applied to the enclosure by a turbine driven by an AC induction motor. Servo means are provided for regulating the speed of the motor and thereby the pressure differential across the bead. The AC motor and the servo means allow the desired pressure to be maintained without surges and allows the differential pressure to be rapidly changed, as for the passage of a splice in the web through the bead.

Abstract: A coating system for applying a coating solution to a web includes a coating device for applying the coating solution to the web as it moves past the coating device, a doctor blade having a curved end face which corresponds to the curved configuration of the web as it moves past the end face. The end face of the doctor blade serves to scrape off any excess amount of coating solution applied to the web by the coating device.

Abstract: In the hopper coating of liquid compositions on moving webs, as in the coating of photographic layers on film supports, the trapping of solid particles or bubbles in the hopper slots causes line defects or streaks in the coated layers. These defects are avoided or reduced by determining the conditions under which the composition can be flowed through one or through a plurality of adjacent slots of the coating hopper at slot Reynolds numbers less than about 10 and flowing the composition through such slot or slots under said conditions.

Abstract: A coating apparatus includes: a block-shaped die main body; upper and lower nozzle parts projecting from the die main body to form a nozzle, forward end portions of the upper and lower nozzle parts being substantially cylindrical and each of the portions having a constant curvature, the forward end portion of the upper nozzle part serving as a guide, a discharge opening having a slit-shaped sectional configuration being provided in the guide, a bottom surface of which is lower than a surface of the guide; a coating material reservoir, provided in the die main body, communicating with the discharge opening; a groove formed between the upper and lower nozzle parts, through which the discharge opening communicates with the reservoir; a partitioning plate mounted widthwise substantially entirely on one of the forward end portions of the upper and lower nozzle parts so that the partitioning plate is movable through the nozzle to open the groove; a rotary block pivotably supporting the die main body for rotation th

Abstract: For filling the edge groove (26) of an insulating glass pane (1) of an arbitrarily designed outer contour with sealing compound, stored geometrical data of the outer contour of the insulating glass pane (1) are utilized for controlling the relative motion between the insulating glass pane (1) and the filling nozzle (4). The relative velocity of the relative motion between the insulating glass pane (1) and the filling nozzle (4) is varied in such a way that the desired extent of filling of the edge groove (26) remains constant even in case of a change in the depth of the edge groove and/or in case of fluctuating feeding rate of a sealing compound. Furthermore, the relative speed between the filling nozzle (4) and the insulating glass pane (1) is selected to be higher in the zone of linear or less strongly curved sections (6) of the edge groove (26) than in the zone of more strongly curved sections (5).

Abstract: The invention provides an apparatus for coating a web which has a first surface having been coated and a second surface opposite to the first surface. A support roll has a supporting surface around which the web is adapted to be conveyed and an air-jetting device for jetting air through the supporting surface onto the first surface of the web so that the web is supported by air without coming into contact with the supporting surface. A coater is disposed to face the supporting surface so as to coat the second surface of the web. The apparatus is provided with a heater for heating air to be jetted by the air-jetting device so that the temperature of the air becomes higher than that of the first surface of the web.

Abstract: An apparatus for coating a travelling web (5), having supply systems (10,15,16;31,33;41;47,49;73) for the supply of coating agent (11) to the web (5), the systems including a metering device (15;31;41;47,49;75;77) extending across the whole width of the web and which by an intermittent contact surface (27,29;37,39;43,45;47;49) provides intermittent engagement with the web (5) or a backing member (3) against which the web subsequently comes to engagement, for the deposition of strands of coating agent (11) on the web (5) or the backing member (3).

Abstract: A coating apparatus and method is disclosed for applying coating material onto a web supported by a backing member. The apparatus includes a housing which is disposed closely adjacent to the backing member. The arrangement is such that the web supported by the backing member moves between the backing member and the housing. The housing defines a chamber having an open end facing towards the backing member. A coating shoe slidably cooperates with the web, the shoe being movably disposed within the chamber. The shoe defines a cavity which is connected to a source of pressurized coating material. The cavity has an exposed face towards the web such that the coating material flows into the cavity and through the exposed face for applying the material onto the web.

Abstract: A system for applying .[.one-part thermal-cure.]. .Iadd.fluent .Iaddend.material, such as structural epoxy, includes apparatus for heating or cooling the epoxy to a temperature above or below ambient. A spirally coiled tube is suspended within a hollow enclosure by tube end fittings extending from axially opposed ends of the tube. An electrical heater and temperature sensor extend from opposed enclosure ends into the tube coils approximately centrally of the enclosure. The enclosure is filled with a heat transfer fluid that surrounds the coiled tubing. The fluid is connected through an inlet and outlet in the enclosure endwalls for circulation externally of the enclosure through a fluid chiller. A microprocessor-base controller receives input signals from the temperature sensor and a temperature adjustment mechanism, and provides outputs to the heater chiller and heater-exchange fluid pump and circulation valve, and to alarm mechanisms for indicating a high-temperature or low-temperature alarm condition.