Abstract: A coating method and an extrusion-type coating head in which turbulence at the junction between two flows of coating materials is prevented to provide multi-layer simultaneous coating over a wide range of coating rates and with a good coating quality. An intermediate block is sandwiched betwen a rear block defining a back edge and a front block defining a doctor edge. Two coating flows pass through slits formed on either side of the intermediate block, joining at the top end of the intermediate block and flowing together into a short slot extending between the end of the intermediate block and the outlet of the head.

Abstract: A device for applying fluid (e.g., etchant) to a substrate (e.g., thin metallic tape) wherein the device includes a head member having means therein for directing a first fluid (e.g., etchant) at an established first pressure against the substrate and means for directing a second fluid (e.g., air) at an established second pressure equal to or greater than the first pressure (at the location of fluid intersection) and against the substrate in the area proximate the first fluid so as to substantially contain and limit the first fluid to impingement substantially only at the location against which the first fluid is designed to strike. Preferably, two opposing head members are utilized, and these may serve to maintain the substrate therebetween in a suspended state. Both head members are movable relative to each other during fluid application. As stated, the device is particularly suited to function as an etcher, but may also serve other purposes (e.g., coating, cleaning, rinsing, etc.).

Abstract: An applicator for a crease setting composition includes two or more applicator heads mounted over a surface having vacuum means for gripping a fabric. The applicator heads can be raised and lowered in unison and moved back and forth over the surface. When the rear edge of the fabric is sensed, the applicator heads drop onto the fabric and then are moved backwards while applying the crease setting composition to the fabric. When the front edge of the fabric is sensed, application of the setting composition is discontinued and the applicator heads are raised from the fabric. Channels or grooves in the surface, which supports the fabric during application of composition, receive the creases so that accurate alignment is maintained between the applicator heads and the creases. Air pressure is used for dispensing the composition.

Abstract: A method of forming a sift-proof seal for closure of a box having a plurality of folded flaps, the seal being formed by an adhesive strip pattern. The flaps are moved linearly toward a plurality of nozzles which extrude adhesive in a pattern of closely spaced adhesive strips. A flap having such an adhesive pattern is brought into contact with a second flap to compress the pattern of adhesive therebetween. The spacing between adjacent strips of adhesive is such that the folding of the flap causes merging of the adhesive to form a continuous strip of adhesive, thereby forming a box closure. The adhesive pattern is limited to a first outside edge of the first flap, with each remaining outside edges receiving a sift-proof continuous line of adhesive.

Abstract: Method and apparatus for coating a paper or paper board web including preventing deposition and drying of the coating paste on the edge zones of the coating chamber by continuously causing a flow of coating paste from the coating chamber past the edge seal (2). Each edge seal is disposed in the space between the front and the rear walls (3,4) of the coating apparatus, and the upper part (11) of each edge seal corresponds to the form of a wedge between the wiping member (9) of the coating apparatus and the web (12) to be coated. Coating paste flows through gaps (13, 14) between the edge seals and the wiping member and between the edge seals and the web, which gaps are for example, between about 2-5 mm wide.

Abstract: A method and apparatus for impregnating a porous substrate with foam, the method comprising transporting the porous substrate through a nip region defined by a rotating foraminous drum and a foam discharge head, the foam discharge head comprising one or more discharge openings, supplying foam to the discharge head with pressure sufficient to discharge foam through the discharge openings to impregnate the porous substrate, and urging the foam discharge head and the foraminous drum toward each other to compress the porous substrate as it passes the discharge openings. The foam discharge head is mounted to a hinged plate to enable the urging of the discharge head toward the foraminous drum.

Abstract: A method and apparatus for impregnating a pourous substrate with foam the method comprising transporting the porous substrate through a nip region defined by a moving foraminous surface such as a rotating foraminous drum and a foam discharge head, the foam discharge head comprising one or more discharge openings, where the transport of the porous substrate through the nip region causes the porous substrate to be compressed as it passes the discharge openings, and supplying foam to the discharge head with pressure sufficient to discharge foam through the discharge openings to impregnate the porous substrate. A surface support conveyor is positioned between the foraminous surface and the porous substrate.

Abstract: In a coating method using a coating head having a coating solution supplying inlet and a slot opening, the coating solution is caused to flow from the inlet to the slot opening in such a manner that the flow width increases gradually while the flow thickness decreases gradually. An apparatus according to the invention has a coating head in which a flow path is formed between an inlet and a slot opening, such that the flow width gradually increases while the flow thickness gradually decreases.

Abstract: A glue coating apparatus is provided having a plurality of individual slit nozzles. Two faces are formed by an end face of a nozzle plate, in which feed channels open out, and by a clamping strip extending in front off the nozzle plate, these clamping a slit plate between them. The feed channels open into the regions of the slit plate which remain free between webs, so that the glue is channeled through the back of the slit plate. The webs and the individual glue streams are combined only immediately in front of an outflow point, to assure a uniform covering of the coating width, but prevent an overflow of glue from one slit nozzle into an adjacent one. The webs may also be tapered towards the outflow point, so that the individual glue streams can easily merge into one another.

Abstract: Apparatus and process for applying a flowable substance to a substrate. A perforated cylinder feeds the flowable substance to the substrate with a counter-pressure roll adjacent. A lift-off roll assists in drawing the substrate off the cylinder in response to the degree of adhesion between substrate and cylinder. The distance between the axes of rotation of the counter-pressure roll and cylinder is less than the sum of radii of the roll and cylinder.

Abstract: Apparatus for coating the endmost threaded section of a pipe with corrosion resistant powder coating material by rotating the pipe and spraying the section to be coated with electrostatically charged, air-entrained powder through two stationary nozzles, one of which is directed at the section to be coated, and the other of which is directed at the chamfered end of the pipe. To prevent overspray of the powder from contacting the pipe adjacent to the area to be coated, a pair of air nozzles are directed at the area of the pipe adjacent to the area to be coated.

Abstract: The coating device features a first applicator which, to begin with, forces coating substance applied on the shell of a web roll (1), in a press gap formed between said roll and a press roll (2), into the web (W), thereby impregnating it. This makes it possible to apply with maximum uniformity and without web breaks and wrinkles, immediately successively, a second coating layer during the still wet condition of the first layer where, naturally, again a web guide roll (3) is provided.

Abstract: A device for simultaneous multilayer application in which discrete liquid substances are applied as at least two mutually-overlaid layers to a continuously moving web comprises a web, a backup roller around which the web moves and a hopper for simultaneously applying upper and lower layers to the web. The hopper includes first and second guide surfaces along which the liquid substances flow onto the web, and first and second slots for individually supplying the liquid substances to each of the guide surfaces. The slots are designed such that the length of the slot for supplying the lower layer is longer than the length of slot for supplying the upper layer and the width of the slot for supplying the lower layer is smaller than the width of the slot for supplying the upper layer. In this manner, the edges of the applied liquid substances are continuous along the length of the web and streaks are prevented from forming along the applied surfaces.

Abstract: A device for simultaneous multilayer application in which discrete liquid substances are applied as at least two mutually-overlaid layers to a continuously moving web comprises a web, a backup roller around which the web moves and a hopper for simultaneously applying upper and lower layers to the web. The hopper includes first and second guide surfaces along which the liquid substances flow onto the web, and first and second slots for individually supplying the liquid substances to each of the guide surfaces. The slots are designed such that the length of the slot for supplying the lower layer is longer than the length of slot for supplying the upper layer and the width of the slot for supplying the lower layer is smaller than the width of the slot for supplying the upper layer. In this manner, the edges of the applied liquid substances are continuous along the length of the web and streaks are prevented from forming along the applied surfaces.

Abstract: A coating apparatus for forming a curtain film of uniform thickness on a suitable substrate, particularly for production of recording/reproducing media such as photosensitive and magnetic media. Jets of an auxiliary liquid are provided in the vicinity of a lip portion of a liquid pouring device which pours the coating film on the substrate. The jets expel an auxiliary liquid which does not affect the characteristics of the coating film, but which does prevent thinning of the curtain film in the vicinity of edge guides of the apparatus. Depending on the height of the curtain film, more than one set of jets may be provided along the length of the curtain film.

Abstract: An inventive method may perform a plating the surface of the metals sheet without using a molten plating metal. This method successively melts a supplied solidus plating metal in close proximity of the passing metal sheet and adheres the molten plating metal as a plating film to the surface of the metal sheet, where the metal sheet passes upwardly and the plating metal is supplied through an upwardly-directed nozzle disposed near the passing sheet, and when or immediately before the plating metal is supplied from the nozzle, it is molten by a heat melting means. The molten plating metal forms a pool at a corner defined between the surface of the passing sheet and the tip of the nozzle, and the molten metal of the pool forms a plating adheres to the sheet surface and forms the plating film.

Abstract: The device has a continuous adhesive-applying surface which is made up from a plurality of elements, articulated so as to enable the configuration of the surface to be varied by varying the relationship between the elements. More particularly, the elements comprise two base elements pivotally connected to one another and forming the base of the U, and two leg elements one pivotally connected to each of the base elements, forming the legs of the U. For adjusting the configuration of the surface, the distance between the pivotal connections of the leg elements with the base elements and also the distance between the remote ends of the leg elements are adjustable. For use in a pulling over and toe lasting machine, the central pivot between the two base elements is fixed in the machine so as to maintain the toe end of the applicator device in the correct relationship with other operating instrumentalities of the machine.

Abstract: In a process and a device for the impregnating and/or coating application of liquid, optionally foamed substances, through a slot the parts of the device performing the application are arranged to form a surface almost plan-parallel to the surface of the sheet material to be subjected to the application so that the trailing end of the application device is supported by the sheet material. Between the application device and the surface to be coated, a hydraulic pressure is generated which floatingly supports the device and which has a uniformizing effect on the application layer.

Abstract: A coating method and apparatus in which a freely falling film of a coating solution is applied to a web moving along a continuously rotating backing roll. The film width is wider than that of the web. The coating solution is removed from the backing roll by a cleansing device such as one that applies a solvent to the backing roll and then suctions the solvent and coating solution from the backing roll.

Abstract: A method and apparatus for two-sided coating of a moving web, e.g. a paper web, and smoothing said coating. The direction of movement of the web (4) is substantially upwards. The web is fed through a coating chamber (3) and the coating is immediately smoothed in the top part of the chamber. The top of the chamber is formed by a flexible blade (5) and a rod (6) mounted rotatably on bearings, the blade and the rod forming a nip (7) where the coating is smoothed while the web passes through it. The nip is mounted at a short distance from the coating channel outlets (2).

Abstract: A device for distributing a liquid in the form of a thin layer on a surface is housed in a cylinder and is provided with a freely displaceable spring-loaded piston for ejecting and distributing liquid from a chamber formed by the piston and a base plate member having a plurality of bores. The base plate member bores are opened and closed by nozzle needles which extend through bores disposed in the displaceable piston to a support plate to which the needles are affixed and which is adapted for moving the needles towards and away from the base plate member bores for closing and opening the base plate member bores for regulating distribution of the liquid.

Abstract: A method of starting the bead coating of a moving web with a composite liquid layer comprising a higher viscous and lower viscous layer of coating compositon, by reducing the rate of flow of the higher viscous layer to zero, reducing the pre-starting distance between the coater and the web to at most the normal coating gap and initiating the wetting of the web by the lower viscous layer, and then adjusting the rate of flow of the higher viscous layer to the normal coating value.

Abstract: An automatic coating apparatus has a plurality of nozzle devices movable in X-, Y-, and Z-axis directions along tracks over a workpiece to be coated. One of the nozzle devices is displaceable with respect to the other nozzle device. Different coating materials are ejected from the nozzle devices toward the workpiece. Each of the nozzle devices has a nozzle which can be opened and closed by a valve operated by a cylinder mechanism. While a coating material is being ejected from one of the nozzle devices, the other nozzle device is closed. By thus selectively opening and closing the nozzle devices, the different coating materials can be coated successively on the workpiece.

Abstract: The disclosed charge transfer signal processor includes a vacuum housing having an input face and an output face, a 2-D electromagnetic input means cooperative with said input face for providing a 2-D input electronic charge signal within the vacuum housing, transfer means for imaging the 2-D input electronic charge signal in a region of the vacuum housing proximate the vacuum housing output face, and charge feedthrough means coupled to the vacuum housing output face for transferring the imaged 2-D electronic charge signal externally to the vacuum housing. In one embodiment, the charge transfer signal processor is operable as Gen-1 charge transfer amplifier. In another embodiment, a microchannel plate assembly is disposed in the vacuum housing intermediate the input and output faces, and the charge transfer signal processor is operable as a high-gain charge transfer signal amplifier.

Abstract: A method of simultaneously applying a plurality of liquid coating compositions to a moving web by the method of multi-layer coating; wherein the lowermost layer is comprised of water, with the wet coverage of water on the web being 2 cm.sup.3 or less per square meter (m.sup.2) of the web, and the layer immediately above the lowermost layer comprising a water-soluble coating solution having a viscosity greater than water and which is greater in thickness than the lowermost layer.

Abstract: An extrusion type coating head having a back edge, and two doctor edges arranged along the direction of a moving web with slots therebetween for coating solutions to be applied to the web. Both of the doctor edges are convex toward the web.

Abstract: Apparatus for applying multiple narrow, closely spaced beads of viscous liquid, such as hot melt adhesive, to a substrate comprises first and second blades between which there is a thin shim having a plurality of parallel, closely spaced slots open to and in fluid communication with a slot cavity in one of the blades such that high pressure, viscous liquid supplied to the slot cavity exits onto the substrate from between the blades through the slots in the shim.

Abstract: A method and apparatus for coating a liquid coating composition to a moving web in which air entrained on the web is replaced by a gas having a higher solubility than air in the liquid coating composition. The moving web is exposed to the gas immediately before it arrives at a die through which the liquid coating composition is applied to the web. A vacuum system may be used to remove the air from the web prior to its exposure to the gas.

Abstract: A machine to apply adhesive to the toe and ball region of a footwear upper assembly that includes a last, an upper draped about the last and an insole at the last bottom. The machine includes a pair of adhesive nozzles to apply the adhesive onto the footwear upper assembly near the edge of the insole, a pair of nozzle arms, one nozzle arm of the pair of nozzle arms being secured to each nozzle of the pair of adhesive nozzles and adapted to move the nozzle secured thereto; and a mechanical structure operable to guide the nozzles along respective paths adjacent each edge of the insole to deposit a ribbon of adhesive onto the upper assembly from the toe of the upper assembly to the ball region of the upper assembly. The mechanical structure includes a nozzle-guide template that is configured to an outline that, together with other mechanical structures, matches the outline of the insole between the toe and the ball region of the smallest upper assembly of the style to be lasted.

Abstract: A method for uniformly coating a moving substrate by eliminating nonuniformities in the voscosity of the coating solution along the line where the solution is applied to the substrate. A viscosity-varying region is provided either inside or outside of a coating solution pocket in an extruder assembly. In one embodiment, the voscosity-varying region is provided by making the length of a slit through which the coating solution flows onto the support less than that of the pocket. In another embodiment, the viscosity-varying region takes the form of small-diameter tube through which the coating solution is supplied to one end of the pocket. In a third embodiment, a roller is disposed in the pocket and the diameter of the roller and the pocket are tapered towards the center. In a still further embodiment, the solution is supplied through a distributor.

Abstract: An appliance for a double-sided coating of a moving web by means of two coating substance applicators and a smoothing nip comprising a back-up roll on one side of the web and a adjustable levelling blade or the like on the other side of the web. The coating substance is supplied on the web directly on the side facing the levelling blade and on the surface of the back-up roll or the web on the other side of the web. The smoothing nip and the both applicators are located within a 30 degrees sector of the back-up roll, preferably within a 20 degrees sector.

Abstract: A method of bonding semiconductor chips to a mounting surface and a nozzle for same includes the steps of applying a first deposit of a die attach adhesive material to the mounting surface in a manner wherein the first deposit has the general shape of a starfish. This starfish shape is characterized by a raised central portion disposed at the intersection of the radially inner ends of a plurality of centrally thickened arms. The next step is to apply the bonding surface of a semiconductor chip against the deposit to cause the deposit to spread therebeneath while removing air pockets and hence any voids within the die attach adhesive material. The volume of the deposit being proportional to the surface area of the bonding surface and the configuration of the first deposit being defined to cause uniform and symmetrical spreading of the first deposite across the bonding surface provides full coverage of the bonding surface with a uniformly thick layer of adhesive.

Abstract: A vibration damper for use with an apparatus for applying liquid to both sides of a running web and then drying the web with an air drier. Vibrations induced by the air drier are damped by uniformly blowing air on both sides of the running web between the drier and the liquid application heads. Preferably, the gas ejection surfaces are stepped or tapered so allow larger vibration near the drier but to reduce the allowed vibration nearer the liquid application heads.

Abstract: A liquid toner applicator for elongated photoconductive film medium on which a latent electrostatic image has been formed includes an upper bearing surface for supporting moving film medium, which is spaced from a conductive block having an upper surface. The conductive block has slots cut into a toning region of its upper surface. During operation, pressurized toner wells through the slots into the region between the lower surface of the film and the upper surface of the block. The toner tones the latent image. The upwelling toner spills into fluid channels, which carry the toner which is not used to a catch basin. From the catch basin, a toner pump recirculates the toner. Downstream form the toning region, a further slot cut into the block communicates with a vacuum source to squeegee away excess toner which is not associated with the toned image. An air knife downstream from the vacuum squeegee includes a slot cut an an angle through the block and a pressurized air source therefor.

Abstract: Apparatus for applying multiple narrow, closely spaced beads of viscous liquid, such as hot melt adhesive, to a substrate comprises first and second blades between which there is a thin shim having a plurality of parallel, closely spaced slots open to and in fluid communication with a slot cavity in one of the blades such that high pressure, viscous liquid supplied to the slot cavity exits onto the substrate from between the blades through the slots in the shim.

Abstract: For a very rapidly running press, in which webs are attached together by application of a series of linear transverse portions of glue instead of clipping them together, the known adhesive applicator technology when a different spacing is desired between the portions of glue or adhesive applied to the sheet, require changeover of the entire apparatus. With the present invention there is a division of the adhesive application operation between two different groups of components of which one group is a part of an operating machine while the second group is mutually interchangeable with other members of the group having a different size. The first group of components includes a shaft for the applicator cylinder with its drive, its bearing, a control means and a central body nonrotatably attached to the shaft.

Abstract: Apparatus for automatically dispensing a flowable material, especially an edible flowable material, especially an edible flowable material such as a sauce on an object such as pizza dough preparatory to making the end product. The apparatus includes air-pressure actuated reciprocatable piston means associated with valve means for channeling a flowable material from a source thereof to dispensing means provided in the apparatus. Piston stroke limiting means, as well as sealing means for the dispensing means, are provided to selectively control the amount of flowable material dispensed by the apparatus. The apparatus advantageously is associated with conveyor means and meat dispensing means to enable a product such as pizza to be prepared on a continuous, mass production basis.

Abstract: An apparatus for permanently setting pre-formed creases of a pair of pants comprises a stanchion member and a pair of spaced-apart substantially parallel support members extending substantially horizontally from the stanchion member. A substantially horizontal upper crease blade is fixed to each support member and has a lower crease blade pivoted thereto. The free ends of the crease blades extend away from the stanchion member and include applicator nozzles that are directed upward for the upper crease blades and downward for the lower crease blades. When a pair of pre-creased pants are slipped over the crease blades and the lower crease blades are pivoted downward, the pants are pulled taut at the hems between the pre-formed creases. As the pants are pulled off of the crease blades a pumping mechanism supplies a flowable, curable setting material such as silicone rubber to the applicator nozzles, which apply a coating of setting material to the inside surfaces of the pant legs along the creases.

Abstract: Apparatus for coating a web, such as paper or board web, comprises a coating nip formed between a rotating counter roll and a smoothing member, or between two smoothing members, through which the web to be coated is passed with a coating substance being applied to the web before it passes through the nip. The apparatus comprises an arrangement by which the linear load and/or the distribution of the linear load in the coating nip is adjustable to control the quantity and/or the distribution of the quantity of the coating substance applied to the web in the transverse direction thereof. A smoothing member comprises an elongate member extending transversely to the direction of web movement through the apparatus and is flexible with respect to its longitudinal dimension so that the profile of the load distribution in the nip can be adjusted to be relatively steep, i.e, the load in the nip may differ relatively widely at points which are relatively close to each other.

Abstract: A coating die is adapted to apply a number of materials onto a web from a single coating slot by the use of a movable cam in the die to alternately connect the coating slot to one or the other of a pair of inlet ports and seal the other port. A rotary cam facilitates rapid change of materials from the coating slot onto a continuously moving web.

Abstract: A method and apparatus for drawing a thick film circuit on a substrate by discharging a paste from a tank with a discharge hole. A waste drawing is performed by extruding the paste from the tank on a waste drawing section at a predetermined interval of non-drawing duration, thereby preventing paste clogging at the discharge hole and resulting in increase on workability and productivity.

Abstract: This invention provides a method and an apparatus for direct formation of a stripe pattern on a textile substrate such as sliver. The object of the invention is to dispense with a gill which would interfere with a high-speed feed of said textile substrate and thereby improve the efficiency of coloration. In accordance with this invention, a color supply hollow drum 2 and a color suction hollow drum 3 are vertically juxtaposed and a continuous length of fibrous material is continuously fed between said two drums 2, 3 by rotation thereof. As the substrate material is thus fed, a color composition is supplied from color supply grooves 8 of the color supply hollow drum 2 while it is drawn by a suction force acting in color suction grooves 13 of the color suction hollow drum 3 to cause the color composition to strike through the fibrous substrate material to thereby form color stripes of substantially the same configuration as that of the above-mentioned grooves on the fibrous substrate material.

Abstract: The rotating head comprises a predetermined number of blades being supported by a blade carrier arm (3), the latter being integral with the shaft (1). The blades are arranged on a vertical axis in suitably inclined positions, a fact which permits to carry out the automatic coating of the surface of the material by means of every type of material based on marble, stone and the like by means of every type of putty.

Abstract: An applicator assembly for applying hot melt adhesive to a substrate such as the end flaps of a sift-proof carton includes slot nozzles employing elongated, wear-resistant doctor blades formed with a fluid discharge slot. The doctor blades, preferably in the form of hardened steel plates, are releasably clamped to the body of the applicator in communication with the outlet of an internal passageway in the applicator body which receives adhesive from a flow control device such as an adhesive gun. The plates forming the doctor blades are separated by a shim to define the fluid discharge slot into which the adhesive flows from the internal passageway. The lowermost ends of the doctor blades are formed in various configurations to spread the adhesive in the desired pattern or thickness on the substrate depending upon the type of adhesive employed or the requirements of a given application.

Abstract: An embodiment assembly for the impregnation of a continuous length of fibers comprises a convex surface and a non-convex surface over which the length of fibers is drawn under tension. The pressure of impingement on the surfaces alternately separates and consolidates the fibers in sequence during their impregnation with the resin, to obtain a complete and homogeneous impregnation.

Abstract: A system for two-sided coating of a running paper web. The device comprises an application device for spreading the coating material over both sides of the web running through a first nip formed by a rotating counter roll and a levelling member.According to the invention, the device includes an auxiliary roll, which is, in the direction of progress of the web, fitted at a certain distance from the first nip and which, together with the counter roll, forms a second nip for the web which has followed along with the said roll over the distance. The diameter of the auxiliary roll is substantially smaller than the diameter of the counter roll, and the face of the auxiliary roll is substantially harder than that of the counter roll. By means of the invention, the risk of damaging the coating at the side of the web facing the roll can be reduced by the web being detached from the second nip formed between the rolls.

Abstract: A method and mechanism to form minute drops of solder paste of uniform size spaced in desired patterns upon substrates of semi-conductor devices by extruding the paste under pressure through similar holes in a die while closely spaced above a substrate and, immediately after contacting the ends of minute columns of the paste with the substrate to adhere the same thereto, instantly raising the die to effect separation of the columns from the adhered ends on the substrates which comprise dots of paste of substantially uniform size which are spaced from each other. The paste is dispensed from a shallow reservoir above the die and defined by a flexible diaphragm positioned in opposition to the die and against which a pressure member operates against the diaphragm and paste contained in the reservoir to effect discharge of the paste under pressure as described above.

Abstract: A T die for extruding a low viscosity resin film coating especially in the manufacture of adhesive tapes. Uniform extrusion from the die is accomplished by the flow of melted resin from a supply manifold through a large number of narrow passageways into a smaller pressure equalizing manifold and out of a die slit extending the entire width of the die, the width of the die slit being adjustable in order to regulate the unevenness of the yield product.

Abstract: A method and apparatus for maintaining a glue applicator unit ready for operation after short or long term stoppages of a gluing operation. During short term stoppages, the applicator unit is pivoted away from the workpieces to which the glue is to be applied to a first rest position at which the nozzles are brought into tight engagement with a sealing means that includes a yieldable surface to surround and overlie the nozzles to provide an airtight seal. During long-term stoppages the glue applicators are pivoted beyond the first rest position to a second rest position at which the nozzles are in communication with a drain channel and purge fluid is sent through the applicator to pass through the nozzles and carry the glue and purge fluid to a collecting container, so that the nozzles are clear for subsequent start-up of the glue-applying operation.

Abstract: A device for coating traveling material webs wherein the coater features two opposite press rolls capable of forming therebetween a coating mixture sump. Each press roll features at its side opposite from the other press roll a coater provided with a doctor blade. In the application of sizing to the web, the last reversing roll in the direction of web travel is arranged above the press rolls. In the application of coating, to the web, the last reversing roll located in the direction of web travel before the first coater is arranged below the two press rolls.