Abstract: A pneumatic actuator for control of the coating thickness or basis weight of a coating apparatus for paper or cardboard webs has a pair of spring metal plates which can be deflected outwardly by a pneumatically extendable cushion between these plates in a frame. One end of the pair of plates is anchored while the other end is attached to a coating pin which works against a compression spring counteracting the outward deflection of the metal plates.

Abstract: The present invention relates to an apparatus for controlling the placement of a curable, shear-thinnable polymer composition into a porous web. The apparatus comprises means for applying tension, means for applying the polymer composition to one surface of the tensioned web, and means for shear thinning the composition and placing it into the web to encapsulate at least some of the structural elements of the web, leaving most of the interstitial spaces open. A preferred apparatus includes one or more process heads that has mounted thereto a rigid knife blade for engagement with the web. The knife blade is movable vertically and rotationally. The process head is also movable horizontally along the path of the web. The invention also relates to an apparatus for selectively placing the polymer composition in a substantially continuous region extending through the web so that the polymer composition fills the interstitial spaces and adheres adjacent structural elements of the web in the region.

Abstract: A method and an apparatus are described to prepare monolayers of particles (or molecules) (3), realizing the steps of: injecting a liquid film (2) with particles (3) dispersed on the external surface of a rotary member (1); adjusting the surface charge density of the particles (3) by injecting adsorption reagents (10), carrying particles (3) placed on film (2) surface so that they form a substantially uniform monolayer (5); putting the monolayer (5) on the liquid film surface (2) in contact with a substrate (7); and advancing the rotary member (1) longitudinally with respect to the substrate (7), in both directions, so that the monolayer (5) is detached from the liquid film (2) and attached to the substrate (7).

Abstract: Cold-reduced flat-rolled low carbon steel strip is surface cleansed of iron fines, iron oxide particulate and associated debris which result from cold-reduction operations. Such ferromagnetic contaminants are permanently separated from the strip steel production and finishing system by continuous regenerative processing of alkali cleansing solution, in which contaminants are continuously filtered and concentrated and are flushed from a continuous-flow filtering apparatus for magnetically-assisted separation of such contaminants which are retained for complete and permanent disposal from the system, providing uniform cleansing solution, on a continuing basis, free of large-volume periodic dumping of contaminated solution, and free of interruption of operations for surface cleansing purposes.

Abstract: One electrode is provided in association with the object to be coated, the other electrode. A pre-stretched ion-exchange membrane in a thin tubular form is sandwiched inbetween two nonconductive water permeable screen tubular housings. The assembly contains a supply line that provides a water way for the electrolyte to flow from the top of the device into a lower cap, then to the lower cap reservoir that allows stabilization and disbursement of electrolyte through the rifled housing Inertia developed through this defined pattern creates a swirling action that scrubs the impurities away from the anode, and to the top of the device to be carried out top. The location of the supply line is just inside the inner screen inserted through both the upper housing and lower cap. The tubular electrode is provided to the inside of membrane housing completing the inner portion of the waterway return chamber.

Abstract: A roll apparatus for use within a bath of molten metal which has a first and second support arm with a pair of openings aligned along an axis, a strip engaging roll having an axial bore and a length as great as the width of the moving metal strip which passes around the roll, a shaft telescopically received in the roll and having a first end disposed in a first of aligned openings and a second end disposed in the other of the aligned openings and a structure carried on at least one of the arms engaging the shaft such that the shaft is axially movable in the aligned openings but non-rotatable with respect to the arms.

Abstract: Coating is applied from a coating application chamber to a moving web or backing roll by a rotating premetering rod, a curved or straight wedge, or a premetering blade which is urged against the moving substrate by a plurality of profiling mechanisms which are spaced from one another in the cross machine direction to control the cross machine direction profile of the applied coating to avoid coating streaks. The profiling mechanisms may be hydraulic actuators, machine screws or thermal expansion driven pistons. Cross machine profiling of the premetering device allows control with minimum pressure on the web. Adjustments to the premetering device are only made where necessary to correct nonuniform coating application where detected.

Abstract: The invention relates to an apparatus for coating a metal strip passed through a container which holds the melted coating material. A channel is connected to the container which encloses the material in the form of a strip beneath the melt bath level. Channel currents are induced in the coating material by means of inductors and cause an electromagnetic force in order to hold the coating material back. The channel is attached to the base of the container such that it is easily detachable and comprises a plurality of parts which can be separated in the strip running direction, are sealed with respect to one another and can individually be moved away from the strip, transversely with respect to the strip running direction, to replace the channel with the strip located in it, after releasing the separation connection.

Abstract: Two coating supply tubes extend parallel to one another and run the full width of a moving substrate in the cross machine direction. Coating is supplied separately to each supply tube from opposite ends. The supply tubes discharge coating through spaced metering holes into an application chamber defined between a sidewall mounted to each supply tube. The counterflow arrangement of the coating supply tubes results in the fall off of coating pressure in one tube being canceled out by the increased pressure in the other tube. The fall off may be further counteracted by varying the spacing between metering holes the greater the distance from the coating inlet, by varying the diameter of the metering holes, or both. The tendency of the heated coating to cause a temperature gradient may be counteracted by cantilevering the applicator head on arms from a support beam through which a temperature-controlling fluid is circulated.

Abstract: An adjustable mounting system for premetered contact coating dies includes a base and a die-receiving portion movably connected to the base. During coating, the die can float a distance from the surface being coated based on the balance of forces between the die and the coated surface. This creates a variable separation gap and allows automatic self-compensating for variations in web or fluid properties. This, in turn, optimizes the coating characteristics. The mounting system can also include an enclosure for protecting its components.

Abstract: A coating apparatus includes: a conveyor for conveying an object to be coated; and a coater for coating a coating liquid by jetting the coating liquid from a slit in a film shape and by causing the coating liquid to collide with the object to be coated. The coater is not in contact with the object to be coated, and a clearance of a slit exit d (m) of the coater satisfies a relation of 0<d≦5×10−5 (m). The clearance of the slit exit of the coater is smaller than a clearance of a slit inlet through which the coating liquid is injected, the slit has, on a side of the slit exit, slit side surfaces which face each other to be in parallel.

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 process for stabilizing strip in a plant for coating strip material, in which a metal strip is taken through a container holding molten coating material that has, below the melt surface, a through channel, in which induction currents are induced by an electromagnetic travelling field in the coating material and, in interaction with the electromagnetic travelling field, generate an electromagnetic force to retain the coating material. In the region of the through channel, a controllable magnetic field superimposed on the modulation of the electromagnetic travelling field is applied, whose field strength and/or frequency are adjustable as a function of sensor-detected position of the strip in the coating channel.

Abstract: A pump for coating molten metal onto a substrate includes a base with an impeller chamber, at least one molten metal inlet opening to the base, at least one molten metal outlet opening from the base, and an impeller connected to one end of a motor driven shaft and rotatable in the impeller chamber, the base, shaft and impeller being made of refractory material. A conduit is in communication with the molten metal discharged from the molten metal outlet opening. The conduit is formed of refractory material and comprises an arcuate shaped portion in which molten metal outlet openings are disposed. An insulating region is located between the conduit and a motor support. The conduit has a shape and the conduit outlet openings are configured and arranged to discharge molten metal toward an interior of the conduit in upward and downward directions such that exterior surfaces of a workpiece passed therein are coated with molten metal.

Abstract: A method and a measuring machine for analyzing at least one property of a paper web (7). According to the invention a jumbo roll (5) from a paper machine is placed in a measuring machine and its paper web (7) is conveyed from an unreeling section (1), through a measuring section (3) to a reeling section (2). A measuring sequence is performed which comprises stepwise feeding of the paper web and measuring the property in the measuring section, when the paper web is stationary, within a web-width measuring area which in the machine direction corresponds to said step length, by scanning traversing a measuring sensor. The values recorded are transmitted to a computer unit for processing and conversion to a visual form.

Abstract: A sensor and a method for determining the basis weight of a coating material containing latex on a substrate is described. The determined basis weight is insensitive to changes in the amount of substrate material underlying the coating. Signals from the sensor may be used in the control of a coating mechanism to provide a coating having a uniform basis weight.

Abstract: A sensor and a method for determining the coating weight of a coating material containing silicone on a substrate is described. The determined coating weight is insensitive to changes in the amount of substrate material underlying the coating. Signals from the sensor may be used in the control of a coating mechanism to provide a coating having a uniform weight.

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: A device for impregnation of webs of porous materials with a liquid impregnating medium under increased pressure comprises a roller rotatable about a horizontal axis, a trough arranged so that the roller is partially inserted in the trough to form a chamber between an inner surface of the trough and an outer surface of the roller, a unit for supplying an impregnating medium into the chamber, and a unit forming an inlet slot for introducing a web to be impregnated into the chamber and an outlet slot for withdrawing the impregnated web from the chamber. The chamber over a path from the inlet slot to the outlet slot narrows and again increases many times.

Abstract: A hot dip coating system comprises a bath of molten coating metal contained in a vessel having a strip passage opening located below the top surface of the bath. A metal strip is directed along a path extending through the strip passage opening and through the bath of molten coating metal, to coat the strip. An electromagnet is employed to prevent the escape of the bulk of the molten coating metal from the bath through the strip passage opening while permitting the strip to move along its path. Expedients are provided to reduce leakage of molten coating metal through the strip passage opening.

Abstract: A coater head for contacting a liquid coating material with a traveling web of paper or fabric. The coater head includes at least two chambers and an extended outflow bubble to increase the zone of contact between coating liquid and the traveling web. Improved, coating quality also results from controlled flow characteristics through the coater head having a feed zone length-to-depth ratio of four or more.

Abstract: Coating liquids are supplied to a coating hopper, and are extruded onto a slide surface of the coating hopper through slits. A pair of guide members are provided at both sides of the slide surface. Side faces of the guide members are positioned at both ends of a desired width of the coating liquids flowing of the slide surface to be applied on a traveling web. Consequently, the coating liquids that flow over the whole width of the slits are divided into the inside and the outside of the desired width by the guide members, and the divided coating liquids are extruded onto the slide surface. The coating liquids within the desired width flow down between the guide members and coat the web, whereas the coating liquids outside the desired width are collected through channels, which are formed in the guide members.

Abstract: A method of manufacturing a composite security thread, e.g. for a bank note, is produced by coating aluminium film onto a polyester film and coating selected regions with magnetic material. Photoresist characters are next printed onto the magnetic material, and a chemical applied to remove the aluminium coating except where protected by the resist. An obscuring silver coating is then applied over the magnetic material, and a final transparent material applied as a barrier to reduce the risk of damage during subsequent processing.

Abstract: The invention relates to an application unit for directly or indirectly applying a liquid or pasty medium (4) to a continuous material web (6), particularly one made of paper or cardboard, having two gap limiting walls (13, 14) that are spaced apart from one another, are each formed on corresponding lip members (2, 3) and between them define a metering gap (12) for the liquid or pasty medium (4), and having a gap-width adjustment device (8, 9) mated at least with the one lip member (2). There is provided on at least one gap limiting wall (13) an elastic adjustable wall member (7) which can be expanded into the metering gap (12) relative to the gap limiting wall (13), extends across the length of the metering gap (12) and can be actuated by the gap-width adjustment device (8, 9).

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 hot dip coating pot (2) having a strip inlet passage (3) and electro-magnetic plugging means to prevent leakage of bath liquid form the pot through that passage, wherein: the plugging means comprises two magnetic field generator (7) disposed one on each side of the passage; each generator projects an oscillating magnetic field into the passage from at least two poles of opposite polarity that are adjacent the passage and spaced apart in the through direction of the passage; the said at least two poles of each generator are respectively in substantial alignment with the corresponding poles of the other in the transverse direction of the passage; the magnetic field projected by the generators have flux patterns which are substantially mirror images with reference to a plane of reflection coinciding with a centre plane of the passage; and both generators operate at a frequency of more than seven kiloHertz. When no strip is present the fields combine and extend transversely of the passage.

Abstract: An apparatus for applying magnetic dispersions to nonmagnetic substrates is optimized by means of an attracting magnet which is opposite the application slot of an extrusion coater and is covered with a soft iron strip in an angular manner. The leading edge of the soft iron strip is arranged virtually opposite the application slot. A curved guide element in front of the soft iron strip improves the gliding behavior of the substrate during application.

Abstract: The invention relates to an apparatus for applying, by means of a slotted nozzle device formed between a stationary incoming nozzle lip and a trailing nozzle lip, a thin layer of coating material to a porous material web that passes over a counterpressure roll, wherein a doctor bar with an essentially circular cross-sectional shape is disposed on the trailing nozzle lip; this doctor bar has on its periphery at least one flattened section that runs across the entire longitudinal extension of the doctor bar and is rotatably supported within a doctor support so that the flattened section is adjustable at a setting angle relative to the counterpressure roll.

Abstract: An assembly having at least three coaters or separate doctor or blade units, all arranged at a single backing roll coating station is provided. At least two of the coater or blade units can be movably positioned for easy operation and servicing of all three units. Additionally, one or more of the coater units may have doctors or blades, and the coater units with blades or blade unit may each be angularly positioned through a range of blade angles to optimize coating operations.

Abstract: A coating apparatus for a traveling web comprising two coating heads and a traveling path changing roller is disclosed. A bar coater is arranged close to a pass roller. The bar coater is fixed at such a position as to contact the web when the pass roller is moved down. An extrusion coater is arranged below a backup roller in such a manner as to move up and down. If the pass roller moves up and bends up the traveling path of the web, the web separates from the bar coater. Then, if the extrusion coater moves up, the web is coated with the coating solution by the extrusion coater. If the pass roller and the extrusion coater move down, the web is coated with the coating solution by the bar coater.

Abstract: Thin thermoplastic foil is applied with the aid of a wide slit nozzle and an electrostatic discharge electrode to a nonwoven mat of thermoplastic fibers and filaments on a bonding roller and the resulting composite is then subjected to biaxial stretching utilizing at least some of the bonding heat carried by the composite. The composite may then be thermally fixed before being cooled to room temperature.

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 apparatus for direct or indirect application of a liquid or pasty coating medium onto a traveling material web, notably of paper or cardboard, includes at least one oblong working unit wetted by the coating medium and an oblong support element carrying the working unit. The at least one working unit and the support element are thermally shielded from one another. The at least one working unit and the support element are joined to one another by way of an elongation compensation system.

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: Method and apparatus of coating a plurality of wet layers on an flexible elongated web, which is economical to build and easy to operate at high speeds, and an apparatus which can be used to manufacture multi-layer magnetic recording media of the highest quality. Such apparatus can employ a gravure coater while an extrusion die both smoothes the wet gravure layer to eliminate its pattern and simultaneously extrudes a second dispersion. That smoothing is provided by a face of the upstream lip, which face has a convex shape that allows the wet gravure layer to remain in contact with the upstream lip over a wrap angle .gamma. of at least two degrees, thus ensuring that the tensioned carrier web neither buckles in the cross-web direction nor experiences instabilities such as fluttering. The extruded layer is contacted by a smooth face of the downstream lip, and the coated carrier web exits the smooth face substantially tangentially at a sharp trailing corner.

Abstract: A coating apparatus comprises an upstream lip and a downstream lip defining a slot between the two lips through which a coating liquid can be extruded; and a pair of guide rollers disposed on opposite side of the lips for guiding a support to move past the lips such that the coating liquid can be applied thereto, wherein the downstream lip has a coating operation surface facing and curved toward the support and, a curvature k of the curved coating operation surface being given asP.sub.2 /T.ltoreq.k.ltoreq.P.sub.1 /Twhere T represents the tension in the coated portion of the support, and P.sub.1 and P.sub.2 represent the pressures of the coating liquid acting on the support at upstream and downstream ends of said coating operation surface.

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 flattened tubular knitted wire mesh is passed through a bath of a slurry comprising a vermiculite binder and a high temperature lubricant powder with optional metal fibers suspended in water to form an impregnated moving slurry filled web. The slurry filled web is passed between metering bars to remove excess slurry to reduce the web to the desired thickness and then dried in an oven at a temperature in the range of about 200-400.degree. F. The web is conveyed at about 5 feet/minute and forms a continuous sheet of flexible preform with a dried filler which is wound on a take up roller driven by a motor via a controller which also operates the web drying oven. The preform is then formed into discrete preforms for article manufacture such as seals and the like by conventional die compression.

Abstract: In order to provide a hot-dip aluminized steel sheet with increased peeling resistance of the coating layer, the thickness of the Fe--Al--Si alloy-layer is set to be 1-5 .mu.m, while the maximum differential unevenness of thickness of the Fe--Al--Si alloy layer is set to be 0.5-5 .mu.m. The hot-dip aluminized steel sheet is manufactured by controlling an elapsed time from the beginning of immersion of the basemetal steel sheet into the aluminizing bath to the completion of solidification of the coating-metal layer which has passed through the bath. In addition another elapsed time is controlled from the time after the base-metal steel sheet has been guided out over the bath to the completion of solidification of the coating-metal layer.

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: 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: 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: 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 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: A novel die holder member for use in co-extrusion cross-head die apparatus for applying two coating materials in inner and outer layers to an electrical wire, or the like. A body member has a through, axial bore in which a tip and die members, with respective tip and die holders, are positioned. A pair of radial bores, with which sources of two flowable coating materials communicate, extend from the exterior of the body member to the axial bore. The first coating material flows forwardly of the apparatus through a first flow passage, the second coating material flows rearwardly through a second flow passage, and the two materials flow forwardly, in superposed relation, through a third flow passage from a confluence of the first and second passages to an orifice in the die member where they are deposited in uniform, inner and outer layers, on the wire. The die holder member of the invention has frustoconical external and internal surfaces with a first, annular groove extending to and 360.degree.

Abstract: A bitumen-based waterproofing membrane is provided with an improved edge for sealing with a contiguous membrane to provide a membrane system with improved waterproofing characteristics. A bitumen-based reinforced membrane sheet is coated with granular material to protect the membrane sheet from ultraviolet rays. However, a section of the membrane sheet is first covered with a piece of protective tape which prevents any granular material from being deposited on the lateral section of exposed bitumen beneath the tape. The membrane sheets are then cut immediately prior to the tape or at the edge of the granular coating and then rolled up. Accordingly, the lateral section of bitumen which is covered by the protective tape is on the innermost part of the rolled-up membrane sheet. During installation, the tape is removed and the exposed bitumen or selvage section is disposed below an adjacent or contiguous membrane. Heat is then applied for an easy and effective seal between two adjacent membrane sheets.

Abstract: A visual lamination for the purpose of finishing the surface of printed and other products by applying laminating films by means of a 100% adhesive system, for which the adhesive-coated laminating film is laminated with a heated laminating roller onto the product, a thermoplastic adhesive being applied immediately in front of the laminating roller on the laminating film by means of a fishtail nozzle, and an apparatus for producing such a visual coating.

Abstract: The present invention relates to a system and a method for using the system to provide a dross-free zinc bath for hot-dip galvanizing of steel strip or wire. The system includes the operation and apparatus for carrying out the operation of directing a zinc solution directly against both sides of a steel strip, along at least 50% of the processing length of the strip.

Abstract: An application device having a trough tapering downward in a wedge shape, through which a web is guided vertically from top to bottom, and which is sealed at the lower end by means of a horizontal hose. The hose abuts against the web from one side, while the web slips along on the opposite side at the lower end of the side surface of the trough. The side surface is formed on a counter-bearer, which is concave at its lower side, so that a deflection roller arranged beneath it can be set as high as possible, and the free web section from the hose gap to the contact point on the deflection roller is as short as possible.