Abstract: Apparatus and methods are provided for producing a long fiber-reinforced thermoplastic resin compositions by initially loosening a continuous fiber bundle by a fiber loosening device so as to form a moving web-like continuous fiber bundle. At least one side of the moving web-like continuous fiber bundle which passes through the die is coated with a thermoplastic resin melt extruded through a slit disposed in the die by an extruder. The slit has substantially the same width as that of the web-like continuous fiber bundle to provide an even supply of the resin melt in the width direction of the web-like continuous fiber bundle. However, the slit has a spacing which changes at a point in the widthwise direction of the web-like continuous fiber bundle so as to be increased as the point is more remote from a feed port and have a constant spacing in the flowing direction of the thermoplastic resin melt.

Abstract: A submerged guide member for guiding a strip of metal in a molten metal coating bath in the form of a roller or fixed guide consisting of sintered, fused or vitreous silica or a mixture of at least 80% by weight of fused or vitreous silica and up to 20% by weight of one or more members of the group consisting of refractory earth elements, metal oxides and compounds of oxides, carbides, borides, oxynitrides, SiAlON, thermal decomposition products of carbosilanes, calcia, magnesia, zircon (ZrSiO.sub.4), zirconia, chromia and silicon carbide. The process concerns the deposition of a protective layer of, for example, zinc on a strip of sheet metal by submerging the metal strip in a bath of molten metal or metal alloy, and guiding the strip with one or more submerged rollers or fixed guide members of the fused silica material set forth above.

Abstract: This continuous galvanizing method and apparatus passes a linear element to be galvanized, e.g., wire, rod, or tube, through a surrounding, relatively short length of conduit which is attached as a cross-tee to the end of a delivery pipe rising from a centrifugal pump submerged in a vat of molten zinc, and continuously flooded with liquid zinc to coat the linear element. The zinc flowing from the open ends of the conduit, and falling as excess from the element being coated, drops back into the vat for recirculation. The vat is covered to provide a substantially closed operating space above the pool of molten zinc to enable the coating to take place in an inert atmosphere.

Abstract: An apparatus for high speed manufacturing of thin-film coated products, wherein the coating thickness is even and the products do not contain uneven streaks. The apparatus includes a coating head having a frontedge disposed on an upstream side of a support, a backedge disposed on a downstream side of the support, and a top end receding stepwise away from the frontedge and away from the support. The backedge has an acute-angled top end portion. The coating apparatus is configured so that filtration central-line waves (W.sub.CA) are formed in a direction perpendicular to the direction of movement of the support. These waves are formed in slit inner surfaces, a frontedge surface and a backedge surface of a top end portion of the coating head. Each wave in these surfaces is less than or equal to 0.2 .mu.m in length.

Abstract: An apparatus for applying a liquid medium has an application slot whose width of opening is defined by the mutual spacing of its longitudinal edges, and means for feeding liquid medium to the application slot. The width of opening of the application slot is adjustable between a maximum width and a closed position permitting the medium to be precisely cut off when the application operation is concluded by closing the slot.

Abstract: An apparatus for coating a cylinder with a solution. The apparatus has a coater which includes a body having a circular hole through which the cylinder passes. A coating surface is provided on a wall of the circular hole so as to surround an outer surface of the cylinder as the cylinder passes through the circular hole. A solution chamber is provided in the body for storing the solution, and a slit is provided in the body for distributing the solution from the solution chamber to the coating surface. A feeding port is provided on a periphery of the body, and a feeding conduit is provided in the body for connecting the feeding port and the solution chamber so that the solution is fed from the feeding port to the solution chamber. The solution chamber has a height H2 of 5 mm to 50 mm, the slit has a slit gap distance HI, and a ratio H2/H1 is 10 to 1000.

Abstract: There is provided a coating apparatus capable of achieving high-speed coating and a decrease in thickness of a coating film and obtaining a preferable coating film. In an extrusion type coating apparatus including a die having a coating material reservoir to which a coating material is supplied, the coating material being coated on a continuously traveling support member while the coating material is extruded from a slit formed in a tip of the die, a magnet portion having adjacent tip portions to form a magnetic gap is arranged such that the magnetic portion and the tip portion of the die face each other to interpose the support member therebetween, and upper and lower lips defining the slit at the tip of the die are arranged out of contact with the support member.

Abstract: In a coating device, a nozzle is configured by combining a front block and at least one back block. A front block includes a portion which is projected toward the base member with respect to the back block, and a top face of the projected portion is processed into a curved face having a predetermined curvature radius. A top face of the back block, which is opposed to the base material, is processed into a flat face, and a plurality of discharging openings are provided therein for discharging a coating material therethrough. The base material first travels along the curved face of the front block. The base member then travels over the flat face of the back block substantially in parallel with the flat face, while the coating material is discharged through the discharging openings, thus forming a stripe-shaped coating film on the surface of the base material. A line width and a thickness of the thus formed stripe-shape coating film is controlled to stay at designed values and fluctuation thereof are eliminated.

Abstract: A method of forming a continuous structure includes the steps of flowing a first liquid reactive resin forming material over a base surface, forming a first thin substantially uniform layer thereof and gelling the first layer. A second liquid resin forming material is flowed through an orifice under pressure forming a liquid stream thereof. The liquid stream is gelled to form a continuous filament with structural integrity as it advances toward the first gelled layer. The filament is contacted with the first layer and distributed thereover in a preselected pattern forming a porous non-woven filament blanket. A particulate solid material is distributed substantially uniformly over the filament blanket. A third liquid resin forming material is flowed over the blanket forming a second thin substantially uniform layer of the third liquid resin forming material and the layer is gelled.

Abstract: A manufacturing apparatus of composite filter used as a bead core filter for preventing an electomagneric interference. Particularly, it comprises an element pre-heating section for pre-heating the element through the heaters by conveying vertically the filter element by top and bottom rollers, a coating element coating section for guiding the pre-heated filter element through a guide shaft and passing through a top of the powder disher whereby coating by soaking to the coating agent, and a hardening section for passing in a wave form so as to harden the filter element finished the coating.

Abstract: An abrasive flap brush including a central core, a layer of adhesive disposed on the peripheral surface of the core by a coater, and a plurality of abrasive flaps adhered to the core by the adhesive. The adhesive is uniformly distributed around the core by providing either the core or the adhesive coater with spacing projections that maintain a predetermined minimum distance between the coater and the core when the adhesive is applied. A coater including the spacing projections is also disclosed, as is a method for making an abrasive flap brush.

Abstract: In known pressure impregnating devices there is a chamber, which continuously narrows in the transport direction, between a cylinder around which the web to be impregnated loops, and the inner wall of a trough containing the impregnating agent. The impregnating agent is supplied to the chamber under high pressure, which is further increased in the chamber by dynamic effects. Sealing problems arise at the inlet and outlet slits as well as at the front faces because of the high pressure. Disruptions in the operation can be created by fluff coming loose from the paper web as well as by impregnating agent penetrating between the sliding faces. The new device is intended to remedy these disadvantages, and is provided with the seals have alternating narrow gaps and wide grooves in the form of a labyrinth seal. The grooves are have drain openings for the impregnating agent flowing through.

Abstract: The present invention is directed to a coating device for application of coating material to the surface of a web or a flexible substrate. The coating device contains a pressurized channel where a flowing stream of the coating liquid first comes into contact with the substrate. The coating liquid enters the channel at the upstream side and wets the substrate as it flows in the same direction as the substrate. A doctor element is positioned at the downstream side of the channel where the excess coating in the channel follows the contour of the boundary formed by the doctor element and leaves the channel. The geometry of the streamlined boundaries of the coating device eliminate the formation of recirculating eddies or vortices. The elimination of vortices eliminates flow instability due to centrifugal forces and removes harmful pressure fluctuations which could result in coat-weight nonuniformities.

Abstract: An elongated material treatment apparatus includes, a coating device for coating a photoresist on a main region in a principal surface of an elongated material with a photoresist, and a conveying device for transporting the elongated material from a cleaning device to the coating device while supporting a transport support region in the principal surface cleaned by the cleaning device, there is a cleaning fluid removing device between the cleaning device and the coating device for removing a cleaning fluid deposited on the transport support region, whereby the elongated material is prevented from slipping during the transport of the elongated material by the conveying device and is correctly transported. The elongated material is transported to the coating device, with the cleaning fluid left in the main region, permitting uniform coating of the photoresist on the main region.

Abstract: Disclosed are a process of and an apparatus for producing paper webs coated on both sides, in particular so-called LWC-papers, in a paper making machine. Firstly, one side of the paper web (1) is coated in a first coating station (8) and then dried. Subsequently, the other side of the paper web (1) is coated in a second coating station (25) and then dried. Each coating station (8, 25) includes an application role (10), an opposing roll (11) and an application unit (13) arranged on the application roll for indirectly coating the paper web. The metering of the coating mass on the application roll (10) takes place by means of a smooth roll doctor. The coated paper web (1) is calendered by means of an on-line calendering unit (60).

Abstract: An apparatus for applying a liquid to threads of a yarn sheet. The apparatus comprises multiple thread wetting elements, each of which has at least one thread guide groove for each thread. In the thread guide groove the thread travels with the liquid and each thread guide groove has one associated liquid feed bore or groove for supplying the liquid to the thread guide groove. The liquid feed bore or groove terminates in the thread guide groove. There is a liquid distributor which is implemented as a support to which the thread wetting elements are attached and which supplies liquid feed to each liquid bore or groove. The separation of adjacent thread guide grooves is 2 to 30 mm, and adjacent thread guide grooves are different distances from the liquid distributor such that the thread guide grooves are offset in an alternating manner.

Abstract: Air entrained within the pond of a coating applicator is influenced toward a designated region for removal. The region is formed by a recessed air collector which sets up a high-recirculation, low-pressure zone within the pond. Entrained air bubbles migrate to the collector. The collected air and excess coating is drawn out of the collector cavity by a plurality of perforations which discharge to a collection cavity at a lower pressure or partial vacuum. The collector structure may be employed in various coater/size press configurations.

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

Abstract: A finish applicator mounting unit includes an apertured member having a plurality of apertures shaped to receive a corresponding plurality of finish applicator nozzles, and a locking mechanism that selectively obstructs the plurality of apertures such that when the corresponding plurality of finish applicator nozzles are received in the plurality of apertures, the finish applicator nozzles are selectively locked in the finish applicator mounting unit. The mounting unit preferably includes an alignment pin that ensures both proper alignment and proper insertion of the finish applicator nozzles. The finish applicator nozzles include a ceramic applicator head fictionally received in an elastic connector. A filament slot is configured to cooperate with the alignment pin to ensure the proper alignment and insertion of the nozzles. The nozzles operate more effectively and efficiently than conventional nozzles, and the mounting unit enables easy access to the nozzles for cleaning, repair and/or replacement.

Abstract: A die coater for applying a material to a web is provided including a die for applying the material to the web in an application region; and a plurality of interconnected rolls selectably positionable in the application region to serve as a backup roll for the web for the application of the material, In addition, or in the alternative, the die coater includes a plurality of interconnected dies selectably positionable in the application region for applying the material to the web; and a backup roll for the web in the application region, wherein a selected one of said interconnected dies selectably positioned in said application region is adjustable to adjust an angle at which said material is applied to said web through said selected die.

Abstract: 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.

Abstract: Cross-head die apparatus and method for applying visually distinguishable coating layers simultaneously to two filament members such as electrical wires. The apparatus includes a body having a pair of generally axial bores and a pair of radial bores respectively communicating between sources of first and second flowable coating materials and the axial bores. A flow guide to direct the coating materials through the axial bores to form uniform layers on wires moved axially through the bores. The two axial bores mutually communicate through an internal conduit, coaxial with the two radial bores, in the body. The two coating materials are supplied at different pressures, causing a portion of the first material to migrate through the internal conduit from one axial bore to the other, whereby the first material forms the entire coating layer on one wire and appears, together with the second material, as a longitudinal stripe in the coating layer on the other wire.

Abstract: An extrusion coating device comprising a die having its distal end composed of an upper lip and a lower lip and having a slit provided between the upper lip and the lower lip, for extruding a paint through the slit to apply the paint onto a flexible support continuously running along distal end surfaces of the upper lip and the lower lip is disclosed. The distal end of the lower lip of the die is constituted continuously from the slit by a planar portion, a first curve portion and a second curved portion. An inclination angle of the planar portion, a radius of curvature of the first curved portion, and a radius of curvature and a center of curvature of the second curved portion are set within predetermined ranges, respectively. Thus, with this coating device, a coated film of satisfactory shape having no coating irregularity or stripe can be formed even when high-speed coating and reduction in coating thickness are carried out or when dusts and particles are attached on the support surface.

Abstract: A uniform film of coating is delivered onto a substrate at high speed by a film applicator, such as a coater apparatus for a papermaking machine, which has a static converging wedge, an adjustable converging wedge, and an extraction channel located between the two wedges. As a unit, the film applicator minimizes the hydrodynamic flow instabilities, as well as reduces flow variations associated with a nonuniform feed and a dynamic contact line. The film applicator also removes entrained air and excess coating from the application zone in order to improve the flow stability and machine runnability.

Abstract: A coating apparatus and method for applying a coating to a workpiece, comprising:a vessel to contain molten metal;an induction coil disposed about said vessel; and,temperature regulation means;wherein, in use, said induction coil induces a magnetic field within said vessel such that a meniscus of molten metal is formed above said vessel, through which said workpiece is passed for coating, whilst said temperature regulation means regulates temperature of said molten metal and/or controls the meniscus height of said meniscus.

Abstract: An apparatus for housing a plurality of applicators in a hygienic cavity and dispensing said plurality of applicators from said cavity. The apparatus includes a container for holding said plurality of applicators, a support structure for the plurality of applicators, a reservoir in fluid communication with the hygienic cavity, said reservoir being situated to facilitate wetting said plurality of applicators with said fluid during said dispensing; an aperture generally adjacent to said reservoir; said plurality of applicators traversing said aperture during said dispensing; and a dispenser structure actuable by a user from outside said container to engage at least one applicator of said plurality of applicators for causing advancement of said at least one applicator through said aperture to effect said dispensing.

Abstract: A coating device for applying a thin wet film to a carrier has a slit die on which at least one flexible lip comprising a flat strip is firmly clamped. The flat strip projects beyond a leading edge of the slit die and is fixed by a clamping strip which is screwed to the inclined outside of a rigid upper lip of the slit die by means of a clamping screw. A locking pin arranged parallel to the clamping screw in the upper lip penetrates the lip and fixes it in its position together with the clamping screw, which also penetrates the flexible lip.

Abstract: An apparatus for coating an optical fibre with a selected one of a plurality of different resins includes respective reservoirs for the resins, an applicator for applying a resin coating to the optical fibre and a distributor between the reservoirs and the applicator including a valve device which is operable for putting any selected one of the reservoirs in flow communication with the applicator. The valve device includes a first body defining a plurality of inlet passages each of which is interconnected to a respective reservoir by a respective inlet conduit and a second body defining an outlet passage which is interconnected to the applicator via an outlet conduit. A flow control device is disposed between the bodies and the bodies are relatively moveable for putting any selected one of the inlet passages in alignment with the outlet passage.

Abstract: A device for applying an adhesive coating to an endless belt in a screen printing machine, and having a trough, a pump for filling the trough to a level such that the meniscus of the adhesive contacts the belt, a doctor blade for removing excess adhesive and a pressure bellows for adjusting the pressure at which the doctor blade contacts the belt.

Abstract: A duplex type coating apparatus capable of applying a coating material to the opposite sides of a moving web while causing the applied coating film to remain identical in thickness on each side has a pair of spaced apart die units disposed at the opposite sides of the web. The web is driven to vertically travel under tension between the dies along a predefined path of travel with a gap defined between each web side and an associated one of the dies. Each die has a liquid reservoir and a transversely elongated slot orifice, or discharge port, at the distal end thereof opposing a corresponding side of the moving web. The dies are operatively coupled to constant fluid feed pumps which supply the reservoirs with a specified amount of coating fluid, enabling the discharge ports to apply an identical amount of coating fluid onto each web surface. The fluid feed amount is chosen such that it is kept equivalent to the product of a preset coat thickness and width as well as the web's traveling speed.

Abstract: Apparatus for applying coating liquid to a web of paper traveling over a web supporting surface at speeds of 3,000 or more feet per minute to produce a coated web free of streaking and other imperfections includes the structural elements for distributing coating liquid onto the supported web through a limited application zone within a short dwell time of the liquid on the web, the web moving through the application zone at a speed that is sufficiently high to create turbulence in the coating liquid being applied to the web, doctoring the coating liquid on the web by biasing a primary doctor against the coated web at the rear edge of the application zone so as to form a layer of coating liquid on the web as the web leaves the application zone, the turbulence in the coating liquid causing machine direction streaks in the layer of the coating liquid as the web leaves the application zone; and, at a location downstream and isolated from the application zone, performing a successive doctoring of excess coating liq

Abstract: The center line average roughness (Ra) of the slit inner surfaces is made in a predetermined range of 5.0 .mu.m according to the present invention, and the straightness (W1) in the delivery direction of the coating solution thereof and the straightness (W2) in the perpendicular direction to the delivery direction thereof are made in predetermined ranges respectively in preferred embodiments. Thereby, development of wrinkles and inclined elongation in the tape itself are prevented when wound on a roll, the productivity is increased, and the product quality is improved.

Abstract: An extrusion coater for the production of a magnetic recording medium having at least one coater slot is described, the lower lip arranged in a direction opposite to the running direction of the substrate and displaced forward relative to the upper lip containing, in its interior, a permanent magnet which is oriented approximately parallel to the upper edge of the lower lip and whose field lines are roughly perpendicular to the coating direction of the magnetic dispersion flowing through the coater slot. By means of this arrangement, it is possible substantially to reduce the layer thickness while achieving a satisfactory coating and also considerably to reduce the edge bead.

Abstract: A process for coating a metal substrate for packaging end use by applying to a primary substrate a thermosettable composition which is free of added solvent and has a residual solvent content not exceeding 10% derived from the manufacture of any of the ingredients. The composition is applied as a thermosettable film by extrusion in melt (including plastified) form through an extrusion coating die onto a substrate. There is relative movement between the die and the substrate so that successive areas on the substrate are coated with the thermosettable composition, so as to form a film. The primary substrate is the metal substrate for packaging end use or an intermediate temporary support from which the applied coating is transferred onto the metal substrate for packaging end use. The applied coating is thermally cured after extrusion through the extrusion coating die. Compositions suitable for use in this and other coating processes are described.

Abstract: A die coating method and apparatus includes a die having an upstream bar with an upstream lip and a downstream bar with a downstream lip. The upstream lip is formed as a land and the downstream lip is formed as a sharp edge. The shape of the land conforms to the shape of the surface being coated. Changing at least one of the slot height, the overbite, and the convergence can improve coating performance. A replaceable, flexible strip can be used above the coating slot to facilitate replacement of a damaged overbite edge. The strip can be held in position by vacuum applied through the downstream bar.

Abstract: A method of forming a continuous structure includes the steps of preselecting a liquid reactive resin forming material, a particulate solid additive material and a porous blanket. The additive particles are mixed with the liquid resin forming material substantially continuously in a proportion significantly greater than that of the liquid resin forming material. Substantially all of the additive particles are encapsulated with the liquid resin forming material to a preselected thickness. A pool of the resulting mixture is formed on the blanket. The blanket is advanced at a rate sufficient to create movement of the additive particles within the pool and maintain the additive particles in suspension. Part of the liquid resin forming material is migrated through the blanket substantially uniformly prior to gelling of the liquid resin forming material to form a continuous resin matrix within the blanket. Also, apparatus forming the structure as well as the structure itself.

Abstract: A coating apparatus having an extrusion type coating head to form a coating on the surface of a support by extruding a coating liquid continuously or successively from a slit, wherein the slit is tapered so as to expand or become wider gradually from its inlet end so as to allow the coating liquid to be extruded toward its outlet end and apply the coating liquid onto the surface of the support and wherein an opening slit width (d1) at the inlet end of the slit and an opening slit width (d2) at the outlet end thereof satisfies the following relations:5% .ltoreq.[(d2-d1)/d1].times.100.ltoreq.20%.The arrangement of the slit can form a coating in a uniform film thickness by preventing the occurrence of irregularities or streaks on the surface of the coating or by suppressing a variation in film thickness.

Abstract: The invention relates to a molten metal plating apparatus comprising a roller rotatably supported by a bearing in a molten metal bath, the roller having a shaft sliding portion, the bearing having a sliding portion, both the shaft sliding portion and the sliding portion being made of ceramic sintered body, at least one of both the shaft of the roller and the bearing being made of a ceramic sintered body containing a solid lubricating material. The invention also relates to a die casting machine having a sleeve and a plunger tip both made of ceramic sintered bodies at least one of which contains a solid lubricating material. The bearing for the roller, the sleeve and the tip may be formed of a composite body having a ceramic sintered body portion and and a metal portion secured and fitted thereto by an intermediate member which is elastically and plastically deformed at the time of the usage. The composite structure formed by fitting is usable for other applications.

Abstract: A continuous process for manufacturing a coated fiber reinforced pultruded article or coated extrudate and the coating composition for use in this process. The coating composition includes an isocyanate resin, at least one active hydrogen-containing resin and at least one solvent having an evaporation rate equal to or less than about 0.5. The process and coating composition of the present invention produce fiber reinforced plastic articles having smooth, adherent surface coatings.

Abstract: As a device used to paint a pattern such as a band, stripe or streak on the surface of an elongate and thin base material continuously supplied, a painting device is composed of at least a painting groove provided across the moving direction of the base material continuously supplied and having an opening formed along its both ends with a width wider than the width of the above-described base material in a manner not to be closed by the base material, a primary pipe communicated with the painted groove and a secondary pipe linked with the primary pipe, so that different kinds of paints are filled into the painting groove through the primary and secondary pipes to paint a pattern such as a band, stripe or streak over the whole surface of the base material in motion.

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 method and apparatus for applying a coating to a continuous length of tubing. A coating chamber having entry and exit ports substantially encloses a portion of the tubing while permitting the tubing to pass continuously therethrough. Airflow into the coating chamber through the exit port strips excess coating material from the tubing surface. Air is withdrawn from the coating chamber by vacuum pumps through one or more separation chambers which separate entrained particles or droplets of coating material from the air. The coating chamber is preferably disposed at a distance from the separation chamber(s). The vacuum line connecting the coating chamber with the separation chamber(s) is preferably flexible or breakable. The separation chambers are preferably capable of being operated in series or in parallel. Adjustable masks are preferably provided at the entry and exit ports of the coating chamber. A seal is preferably provided at the entry port.

Abstract: An applicator is disclosed for inserting a substance into a body cavity. An apparatus for coating paper and a method of forming the paper into an applicator are also disclosed. The applicator is especially useful for inserting a catamenial tampon into a woman's vagina. The applicator includes a tubular member formed from at least one layer of paper which has an exterior surface. The tubular member is capable of holding the substance which is to be inserted. The exterior surface of the tubular member is coated with a water-insoluble coating which is comprised of from between about 95 to about 98 percent by weight of a polymeric material and from between about 2 to about 5 percent by weight of a slip agent. The coating provides the tubular member with a dry coefficient of kinetic friction ranging from between about 0.35 to about 0.56 and a wet coefficient of kinetic friction ranging from between about 0.78 to about 1.06.

Abstract: A coater head has a housing which defines a coating pond supplied with coating under pressure. A plurality of bars extend within the coating pond in the cross-machine direction, and are spaced parallel to one another in the machine direction. A paper web is engaged against a backing roll, and travels through the coating pond past a metering blade which applies coating from the pond to the web. The bars induce a turbulent flow which shears bubbles of air entrained in the coating pond, thereby reducing the bubble diameters and air-induced imperfections in the coating. Greater machine speed, which tends to entrain more air, induces greater shear at the bars which causes bubble size to be more greatly reduced.

Abstract: A novel method of applying paints and other coatings is disclosed which can be carried out by forcibly inserting a cloud of coating particles carried by at least one inert gas into a laser beam attenuated by defocusing. At least one of the inert gases serves as a shield against combustion and can be directed downwardly in addition to a sideway spreading and spraying action. The pressure of the inert gas pushes the particles down onto the substrate. As soon as the particles are energized by the laser beam, they melt and begin to flow while at that exact instant, the coating particles come into contact with the substrate to avoid any possible dissipation of the laser energy. The coating material compositions can be altered by increasing the melting time of the particles even though a short melting time is preferred for achieving a fast coating process.

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: An improved extrusion coater having at least two coater slots for applying one or more magnetizable layers to a flexible nonmagnetic substrate is described. The upper lip of the outlet orifice is recessed relative to the lower lip and, in addition, the edge of a right parallelepiped magnet which has a gradient of more than 400 A/cm.sup.2 in the direction of the extruder slot, resulting in a stabilized liquid cushion, is arranged opposite the outlet orifice for the dispersions from the extrusion coater, on the other side of the substrate. It is thus possible to apply very thin layers and to make the meniscus insensitive to interfering forces. To reduce the edge bead, a stripping plate (13) which is extended beyond the range of the upper or lower lip of the extrusion coater, in the direction of the coated material web (1), is mounted at both coating edges, a minimum distance of from 0.05 to 0.8 mm between the surface (19) of the stripping plate (13) and the coated material web being established (FIG. 1).

Abstract: An apparatus for applying treating liquor to a traveling textile web having a vat containing treating liquor and a plurality of web guiding rolls submerged in the treating liquor and arranged in a substantially vertical sequence with adjacent rolls being in contact to form nips therebetween. The upper rolls are supported in the vat for resting under their own weight on the lower roll to apply pressure at the nips on the textile web. A drive motor drives at least one of the rolls with the other rolls being driven by surface contact with the drive roll for positive feed of the traveling web at a uniform surface speed through the treating liquor. Guide rolls guide the textile web to the vat at substantially the same surface speed as that of the plurality of rolls. A pair of driven squeeze rolls above the treating liquor form a nip through which the textile web is guided as it travels from the treating liquor, with squeeze rolls being driven at substantially the same surface speed as the guide rolls.

Abstract: A metering rod type coating applicator is provided with a metering rod having its peripheral surfaced texture to a texture in a range of Ra 0.06 to Ra 1.6 to improve the application of coating to a moving surface and permit uniform coating application using higher solids content coatings and/or lower coat weights. Preferably, the rod will be rotated at a speed significantly higher than that conventionally used and preferably with a peripheral velocity in the range of about 15 to 20 m/min.

Abstract: In-line flat-rolled steel cleansing and finishing apparatus is disclosed which enable flat-rolled steel, as supplied with surface areas contaminated with iron fines and other debris from gauge reduction operations, to be continuously processed in-line, free of interruptions for cleansing purposes. Continuous-strip apparatus is disclosed which enable in-line continuous-strip cleansing in a manner which decreases iron fines carried by strip surfaces to a desired level while providing for continuous uniform cleansing. Carry-over of iron fines from the cleansing operations so decreases such that iron content of a coating means is decreased resulting in improved corrosion-protection coating. Diminishing iron content in a hot-dip galvanizing bath increases efficiency of aluminum additions and diminishes iron-aluminum dross.