Abstract: A six-roll impregnator applies resin to only one side of a fabric. The resin is then pressed through the fabric, after which a pair of rolls squeezes excess resin from the fabric. In this manner, no air is entrapped within the fabric during the impregnation process.

Abstract: An apparatus for applying coating material in the form of stripes onto a film traveling in a predetermined direction is provided with a coating material nozzle which effuses coating material while supporting the film. The contact support surface of the nozzle in contact with the film is a flat surface, along which the film travels. The coating material nozzle has thereon applicator grooves for uniformly forming the cross-sectional shape of coating material applied in the form of stripes onto the film. Effusion ports or discharge ports for coating material are provided in the bottom surface of the applicator grooves. Coating material is fed to the coating material nozzle through a gear pump, which is adapted to control the coating material supply so that the coating material within the applicator grooves has a pressure lower than atmospheric pressure.

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

Abstract: In order to clean the support region at the bottom end of a doctor element which is clamped to a support and is thereby held to the surface of spreadable material to be doctored, the leaf spring doctor element is removable from a stop on the support against which the leaf spring is clamped in operation by a plate pusher. The support is shaped to have a groove extending along the width of the stop and the support for the doctor element. A sidewall of the groove is defined in a ledge that is movable along the support and along the groove. The sidewall supports oscillation pulse transmitters. A liquid pulse transmitting medium in the groove transmits the oscillations across the grove to the area of the leaf spring support to be cleaned. The oscillation pulse transmitters may be a series of transmitters extending along the sidewall along the groove or may comprise a long bar shaped oscillator which is oscillated at its ends.

Abstract: Apparatus is provided for carrying out a varnish impregnation method wherein a sheet-like base material is sequentially passed through a low-viscosity liquid storage region storing a low-viscosity liquid such as a solvent, a thermal syphon region, and a varnish storage region storing a varnish, the thermal syphon region being positioned between the low-viscosity liquid storage region and varnish storage region and communicating with both regions at air tight seals closed by liquid surfaces, and heating the base material in the thermal syphon region to vaporize the low-viscosity liquid impregnated in the base material. When the base material passes through the low-viscosity liquid, air contained in the base material is replaced with the low-viscosity liquid and discharged outside the apparatus. The low-viscosity liquid impregnated in the material is vaporized in the thermal syphon region.

Abstract: In the operation of a hot metallizing furnace for lengths of metal, in particular metal strip, in which the length of metal to be coated is passed from above through the upper zone of a smelt of a coating material located in a smelt container, the smelt container can be heated by means of an induction coil made up of partial coils arranged axially on top of one another. During hot metallizing the upper partial coil(s) is/are connected to a medium frequency source of electricity in a single-phase manner. For the removal of the deposits which accumulate in the lower area of the smelt vessel, the lower partial coil(s) is/are connected to a three-phase current mains frequency source of electricity. The agitated deposits are then removed from the smelt using a collecting vessel.

Abstract: A dispenser for containing and dispensing samples of a cosmetic product delivered by a roll of paper emerging from the dispenser in a predetermined sequence includes a housing for use with a C-shaped flange and a lid provided with a respective C-shaped flange juxtaposed with the flange of the housing having studs preventing the emerge of the paper above a predetermined length.

Abstract: The apparatus has a spindle rod on which a supply roll of wallcovering is placed, a tensioning rod under which the wallpaper is entrained as it is drawn from the supply roll, a powered take-up roll on which the wallpaper is rolled up, and provisions to readily reposition the tensioning rod so as to force the wallpaper to pass under water contained in a tray. Quick-release fastening devices permit the apparatus to be readily assembled to constitute a carry case with all parts contained, subsequently quickly opened and put into operation, and subsequently the water tray and rods snapped out for cleaning. All parts, including all the structural members, can be easily carried to a sink, tub, or yard hose for rinsing.

Abstract: A doctor for the application of fluent material to a substrate (8), such as a material web has a pressing part (3) extending in the longitudinal direction of the application apparatus (application width), which comprises a working edge (30) passing over the application width (7), an actuator on the pressing part (3) along the working edge (30) and movable by means of a magnetic field, comprising at least one electromagnet and/or permament magnet (20), which together with the pressing part (3) forms a pressing unit (4).

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

Abstract: An apparatus for producing a tape superconductor of a compound superconductor type wherein the apparatus includes a first wire constructed of the superconducting compound material which is melted to form a bead. The bead is then wiped on a tape substrate to form a layer as the substrate is fed by the bead. Finally, the layer is cooled and a tape superconductor is formed.

Abstract: An apparatus for solder joining metal tapes to form laminated metal tapes comprises an alignment box having a base and a sidewall means extending therefrom to define a tapered inner channel extending through the box. The tapered channel having an entrance end and narrowing to an exit end. At least one tapered wall extending from the base and within the inner channel to define subchannels that are spaced at the entrance end and converge into the inner channel before the exit end. The sidewall means and tapered wall extending from the base to respective wall tops, and a cover extending over the channel and subchannels is mounted on the wall tops. The base, sidewalls, inner wall, and cover being configured to form the channel and subchannels to have a first preselected distance between the base and cover that is greater than the width of the tapes.

Abstract: The invention concerns a device and method for limiting of the width of coating in coating of paper or board. The coating agent is spread onto a moving base to be coated by means of a coating device provided with a grooved coating bar. The coating agent is spread substantially only over the width of the web and any coating agent extending substantially beyond the web width is scraped off the base to be coated with the aid of smooth end areas fitted at both ends of the coating bar. The invention is also related to a device for carrying out the method.

Abstract: An application device for applying a liquid such as a magnetic coating liquid to the surface of a continuously moving web in which the amount of chipping of the surface portions of the outlet portion of the coating head thereof, and hence the amount of streaking in the applied layer of liquid, are remarkably reduced. The outlet portion of the application head is made of a very hard alloy, preferably tungsten carbide, containing crystal grains of a carbide 5 .mu.m or less in mean diameter conjoined to each other by a metal, preferably cobalt in an amount of 12% or less.

Abstract: A flame-sprayed layer comprising 1.0 to 1.5% by weight of C, 2.0 to 4.0% by weight of B, 2.0 to 4.0% by weight of Si, 1.0 to 6.0% by weight of Fe, 10.0 to 16.0% by weight of W, 5.0 to 21.0% by weight of Cr and 10.0 to 15.0% by weight of Ni, with the balance being Co, is formed on the surface of an immersion member for a hot dip galvanizing bath. This surface layer has improved corrosion resistance and abrasion resistance and an excellent peeling resistance (adhesion), and the life of the immersion member is prolonged and a galvanization product having a uniform quality and having no flaws can be prepared by using an immersion member having this flame-sprayed surface layer. These effects are enhanced when the formed flame-sprayed layer is heated at a temperature-elevating rate of 10.degree. to 100.degree. C./hr and maintained at a pre-heating temperature of 300.degree. to 600.degree. C. for at least 0.5 hour, the fusing treatment is conducted at a temperature of at least 1000.degree. C.

Abstract: A coating material and apparatus in which the edge portions of the web being coated are supported off the edge portions of the coating head. In one embodiment, recesses are formed in the edge portions of the coating head, while in another embodiment a fluid is jetted towards the edge portions of the web. With the invention, scratching and the like of the edge portions of the web are eliminated, and the web is coating to a uniform thickness in the width direction thereof.

Abstract: The coating head substantially comprises an elastic blade thrust against the paper sheet which is transported by a rotating cylinder, and a chamber fit for containing a coating suspension which is delimited by a portion of the outer surface of the cylinder and by the blade and which communicates with a feeding line of the suspension; moreover, said chamber is delimited by a deflector plate, the position of which, in relation to the cylinder, can be adjusted so as to define an exhaust port for the coating suspension between it and the surface of the cylinder; according to the invention, the deflector plate is provided with a blocking element which can be elastically deformed and fit for limiting the passage of the coating suspension through said exhaust port, said element presenting a free edge facing the cylinder which is parallel to the cylinder axis.

Abstract: An extrusion-type applicator device continuously applying a liquid to a carrier film moving with a predetermined linear velocity and a predetermined running direction includes a head having a bore disposed parallel to the axis of the head for receiving the liquid, a slot connecting the bore with a surface of the head, a back edge portion disposed adjacent to the slot on the upstream side of the slot and having a chamfer whose width is less than or equal to about 50.mu.m but larger than the diameter of each grain of the material of the back edge portion, and a doctor edge portion disposed adjacent to the slot on the downstream side of the slot with respect to the direction, the doctor edge portion having a chamfer with a width of about 2 to 3 .mu.m provided at the upstream edge of the surface of the doctor edge portion. The applicator device can be modified to simultaneously apply a plurality of liquids to a carrier to produce a plurality of films thereon.

Abstract: A sizing machine capable of maintaining a sizing liquid at a desired temperature by controlling the supply of steam into a cavity box containing the sizing liquid is provided with a sizing liquid consumption measuring system capable of accurately measuring a sizing liquid consumption. The sizing liquid consumption measuring system measures a sizing liquid consumption automatically by measuring the quantity of water added to the sizing liquid contained in the cavity box by steam supplied into the cavity box, and the level of the sizing liquid in the cavity box.

Abstract: A hot dip metal strip coating apparatus includes at least one roll submerged in a bath of molten coating metal for guiding the strip through the bath. The submerged rolls are mounted on the ends of support arms by bearings including a pair of substantially flat metal surfaces disposed in planes parallel to and spaced from the horizontal axis of the roll shaft, with the planes of the flat surfaces intersecting one another at an angle within the range of about 60.degree. to about 135.degree.. The flat bearing surfaces are oriented to contact the roll shaft tangentially, with the load in the strip and the flat bearing surfaces supporting the roll during coating and the bearing permitting the free flow of liquid metal between the bearing and shaft on each side of the tangential line of contact of each flat surface with the shaft.

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

Abstract: A method for manufacturing a magnetic recording medium or the like and an applicator device for applying a coating to manufacture a magnetic recording medium resulting in the production of a recording medium having a uniform coating of magnetic liquid without streaking. In one embodiment, the flow index A expressed by an equation (1) below and in which L, V and .gamma.

Abstract: A coater for a web of material, especially a web of paper or cardboard, that travels around a backing roll, with a doctor blade that presses against the backing roll and with components for adjusting the pressure that are distributed along the doctor and affect different areas along it. The adjusting components are piezotranslators (16).

Abstract: On a coating device, at the mouth originating from the chamber for the coating substance, there is provided, between said mouth and the backing roll or web, a cover body which on its surface near the mouth forms an outlet channel that extends away from the space through which at the doctor blade flows the coating substance. This outlet channel has a throttle effect. Additionally, the cover body forms relative to the doctor blade a second throttle channel which is located relatively close to the smoothing edge of the doctor blade. At the outlet of the second throttle channel, the cover body preferably extends into a point which is arranged relatively close to the backing roll or web. The outlet channel can suitably be formed between a base body and the cover body, with the base body ending at a distance from the doctor blade that is maximally 10 mm greater than the clearance of the second throttle channel.

Abstract: A paper coating system is characterized by an upstream dip roll applicator that applies an excess layer of liquid coating material onto a surface of a paper web, and an improved downstream doctor assembly for metering and leveling the coating on the web. The doctor assembly includes a doctor blade having a tip extended against and across the web and a shear plate, upstream of the blade, having a surface extending across and defining a gap with the web. An elongate chamber defined between the shear plate and blade extends across the web, and excess coating removed from the web by the blade flows into the chamber. Coating is drained from and uniformly along a lower end of the chamber at a rate to maintain an eddy current pool of coating in an upper end of the chamber immediately upstream of the blade/web nip, but to prevent formation of a liquid seal in the gap.

Abstract: Method and apparatus for applying a liquid film of controlled thickness to a paper web. The apparatus is in the form of a flexible blade coater having a flexible blade fixed at one end and bearing against a backing roll (with interposed web) at a free end. The blade has independent loading means, preferably pneumatic. An intermediate loading means applies a first load intermediate the fixed and free ends which serves primarily and substantially independently to establish blade geometry or tip slope. A second loading means positioned near the free end of the blade primarily and substantially independently establishes tip load for a given geometry established by the first loading means. The compound loading arrangement allows a wider range of finer control of coating film thickness.

Abstract: There is disclosed an apparatus for coating sheet material. The apparatus includes a rotatable backing roll (4) upon which a sample of sheet material may be mounted to form a cylinder, a coating head (9) including a blade (22), an outlet (21b) for dispensing a coating composition and a supply means (18) for supplying a coating composition to the outlet (21b) in the region of the coating edge of the blade (22), and means for enabling the coating head (9) to be moved in operation parallel to the axis of rotation of the backing roll (4) and in contact with the sheet material mounted thereon whilst the backing roll (4) is rotated, whereby a strip of sheet material may be coated of resultant helical form, wherein the supply means (18) includes an element which comprises a matrix of tubular passageways (19) longitudinally disposed with respect to the flow of coating composition through the coating head (9).

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: In processes in which protective metal coating materials are applied to iron-based substrates in the form of liquid films which are then solidified by cooling, the metal coating can be contacted with a roll such as a tower roll, conveyor roll or guide roll, while the coating material is capable of transfer, by the use of a roll having an exterior ceramic barrier or surface having a thickness of at least about 20 microns whereby the surface of the coated substrate is not unduly adversely affected.

Abstract: A continuous hot-dip plating apparatus has a roll assembly having superior resistance to erosion caused by the hot melt plating metal, as well as high resistance to wear of the shaft and bearings, which are immersed in the hot melt of the plating metal. A ceramic material is mounted on the sliding portions of the metallic roll shaft to make sliding contact with the metallic bearings and/or on the sliding surfaces of the metallic bearings which contact the metallic roll shaft. A clearance is left between the shafts and bearings to hold molten metal thereinbetween for lubrication.

Abstract: A frictionless strip support for supporting a metallic strip conveyed along a feed path in a treatment process. The support including at least one hydrostatic chute including a plurality of confined hydrostatic chambers having apertures therein for a supply of a pressurized treatment liquid such as molten metal, and at least one pair of hydrostatic guides positioned downstream of the hydrostatic chute. Each hydrostatic guide has a confined hydrostatic chamber with apertures therein for supply of a pressurized treatment liquid such as liquid metal. The frictionless support also includes a pump of supplying the pressurized treatment liquid through the apertures and to the confined chambers such that the treatment fluid maintains the strip spaced from the hydrostatic chute and the hydrostatic guides by hydrostatic force of the pressurized liquid normal to the strip surface as the strip is conveyed across the hydrostatic chute and the hydrostatic guides.

Abstract: A slot die head for emitting a coating fluid onto a moving web has a slot orifice, the exit end of which is defined by replaceable inserts, the downstream one of which, relative to the direction of web movement, has a wiping flange cantilevered from a hinge portion thereof. The flange is disposed in use in facing relationship with the web and extends downstream from the slot orifice, so as to be resiliently hingedly movable in directions substantially normal to the web surface for maintaining constant shear levels across the coated area.

Abstract: The doctor device has a profile member pivotally mounted to a retaining member that is carried on a mount. Vertical movement of the mount causes angular displacement of the profile member thereby changing the material applicaton area disposed adjacent and upstream of the doctor. The doctor is either a doctor blade or roll doctor. In the case of a roll doctor, a receptacle is formed in the profile member and the roll doctor is magnetically retained with the receptacle. During application of a material to an application surface with the roll doctor, the roll doctor is magnetically attracted to the application surface by a second magnetic device located beneath the application surface or work surface.

Abstract: Apparatus is provided for carrying out a varnish impregnation method wherein a sheet-like base material is sequentially passed through a low-viscosity liquid storage region storing a low-viscosity liquid such as a solvent, a thermal syphon region, and a varnish storage region storing a varnish, the thermal syphon region being positioned between the low-viscosity liquid storage region and varnish storage region and communicating with both regions at air tight seals closed by liquid surfaces, and heating the base material in the thermal syphon region to vaporize the low-viscosity liquid impregnated in the base material. When the base material passes through the low-viscosity liquid, air contained in the base material is replaced with the low-viscosity liquid and discharged outside the apparatus. The low-viscosity liquid impregnated in the material is vaporized in the thermal syphon region.

Abstract: Presented is an easily portable, compartmentalized apparatus for aiding in the preparation of prepasted wallpaper for hanging on a surface. The apparatus has a wallpaper storage and delivery area, a wallpaper length measuring system, a wetting chamber, a cutting bar, and a sealable relaxation chamber for maintaining the wallpaper in a wetted state to permit relaxation of the wallpaper before hanging.

Abstract: A coating apparatus for applying plastic coatings onto a planar substrate includes an elongate coating head defining therein an elongate distribution channel having a length corresponding to a width of a substrate to be coated, the coating head also defining a coating gap for discharging a coating material from the distribution channel. First and second supply channels are respectively connected between respective pumps and different portions of the distribution channel for respectively supplying first and second coating materials to the distribution channel. A mixing zone is formed in the distribution channel by a partition or a hollow conical body, each of which forms a mixing gradient extending along the length of the mixing zone. Ideally, the pumps for the first and second coating materials provide these materials with the same pressure within the mixing zone.

Abstract: The invention provides an apparatus for coating a solution on a tape-shaped flexible support which is moved so as to run along a top surface of coating head. The coating head is slitted so as to form a front edge surface, a back edge surface in order in the moving direction of the flexible support, and a slit therebetween so that the solution is extruded through the slit of the coating head to the flexible support. In this configuration, at least a part of the back edge surface projects beyond the tangent line at the downstream end of the front edge surface.

Abstract: A tray is provided for dispensing and wetting pre-pasted wallpaper. The tray features a trough and a dispenser rod for holding a roll of wallpaper. The wallpaper can be extended to a desired length and cut directly from the dispenser rod. The cut wallpaper is then placed on a shelf adjacent to a trough containing a wetting agent. The wallpaper is passed under the shelf and through the trough being guided by a guide submersed in the trough to ensure proper wetting. The paper is then withdrawn from the trough and hung on the desired surface.

Abstract: An apparatus for applying a thin layer of a coating material (2) to a web of material (4) passing over a counter-pressure roller (3), with a slot nozzle device (1) includes a vertical nozzle box (5) with an upper nozzle slot (7) between inlet (8) and outlet (9) nozzle lips and a laterally mounted storage tank (6) for coating material (2). In order to keep the layer thickness the same and without coating flaws and thickened edges according to the operating speed and fluctuations in thickness of the web of material (4), the storage tank (6) is mounted on the nozzle box (5) in such a way that the liquid level of the coating material (2) in the storage tank (6) and in the nozzle box (5) is essentially the same. Furthermore, appropriately in the nozzle box (5) is provided a driven continuous conveyor roller (10) mounted eccentrically in a roller chamber (11) in the path of the coating material ( 2).

Abstract: There is provided cross-head type die apparatus for applying a substantially concentric insulating layer to a conductor passing therethrough. Die assembly elements of novel structural combination are disposed within the substantially cylindrical cross-head such that they are in axial alignment with each other and the cross-head. In particular, a die insert or die tip has a front portion which tapers inwardly to substantially a point and includes an outlet orifice to guide the conductor along a passline towards a die orifice. A flow guide has a respective internal surface which tapers rearwardly to form a die orifice on its front surface. Cooperatively tapered surfaces securely fit the flow guide and the die tip within the cross-head axial bore such that a space is formed between the internally tapered surface of the flow guide and the front portion of the die tip. The die orifice and the outlet orifice of the die tip are axially aligned due to their respectively tapered fits within the cross-head.

Abstract: A container attachment device for applying plaster or cement to a tape passes the tape through a pail of wet cement or plaster and has a doctor blade to control the thickness and evenness of the wet cement on the tape. The device comprises an elongate housing having a clip to engage the side of a pail or the like adapted to contain wet cement or the like, the housing extending into the interior of the pail. An arm extends outwards from a top portion of the housing above the clip. The arm has a support adapted to hold a roll of tape. Rollers are provided on the elongate body for guiding tape from the roll down to the lower end of the elongate housing in the pail, and upwards out of the pail, and the doctor blade ensures that an even thickness of wet cement or the like is applied to the tape before leaving the pail.

Abstract: A labor saving taping system for use during the installation of gypsum wallboard, whereby the seam between a pair of adjacent drywall panels can be easily and reliably taped with paper drywall tape that has been pre-coated with wet adhesive mud. This system comprises the detachable interconnection of a frame and a mud reservoir. The drywall tape is fed from a supply roll and threaded along the frame for total emersion in the reservoir so as to receive a coating of mud on both sides thereof. The system also includes a taping tool comprising a hollow housing and a shaft around which the mud-coated drywall tape can be wound for storage and later use.

Abstract: A coating apparatus for coating an object with a coating material in a coating direction includes a holder adapted to be mounted on a controllable support member, a shaft slidably supported in the holder, and a head member mounted on the shaft for angular movement in a direction transverse to the coating direction, the head member having a sliding surface for slidable contact with the object and a coating material outlet positioned forwardly of the sliding surface in the coating direction. In another embodiment, the head member has sliding legs for sliding contact with the object at front and rear positions in the coating direction, at least one of the sliding legs having a recess defined therein to provide a gap between the sliding leg and the object, the gap having a prescribed width in a direction transverse to the coating direction.

Abstract: Disclosed is a coating head for coating a solution on a flexible support which is moved so as to run along a coating surface of the coating head. The coating surface is slitted so as to form a front face, a back face in order in the moving direction of the flexible support, and a slit therebetween so that the coating head extrudes the solution through the slit to the flexible support. The front face has an arc surface with a curvature radius of r.sub.1 and the back face wholly forms an arc surface with a curvature radius of r.sub.2 in the following equations 3 mm <r.sub.2 < 20 mm and 1 mm <r.sub.1 <r.sub.2 /2. Further, at least a part of the back face projects beyond the tangent line at the downstream end of the front face.

Abstract: An extrusion-type liquid application device having a simple construction but in which the width of the coating slit can easily be adjusted, even during a coating operation. Thick members are mounted on the doctor portion of a coating head extending perpendicular to the liquid discharge portion of the coating head. The thick members have acting portions at their upper ends abutting the surface of the doctor portions, central fulcrum portions, and opposite end portions provided with adjusting members. By adjusting the adjusting members, the slit width can be adjusted.

Abstract: A towel dispenser contains two rolls of paper. A bar on the front, when pushed, delivers a short length of wet towel and a short length of dry towel, simultaneously. It also guides the towel dispensed from one of the rolls through a bath of antiseptic hand-cleansing solution. It also releases the system to enable pulling an additional length of toweling from each of the two rolls. Upon release, either towel can be pulled out further manually to produce about ten more inches of towel. The toweling is delivered from both rolls simultaneously, but the towels are used in sequence, the wet towel first and the dry towel next.

Abstract: A saturator of the type comprising a chamber situated between a chamber defining element and a mandrel, in which a web is moved between the chamber defining element and the mandrel to impregnate the web with a saturant contained in the chamber includes at least one saturant delivery port which extends across substantially the entire width of the chamber or the entire width of one of the saturating zones if the chamber defines a plurality of saturating zones. In this way, uniformity of saturation across the chamber is improved. An insert is removably mounted to the chamber defining element such that a surface of the insert defines a wall of the chamber.

Abstract: A known device for continuously coating a web (1) of material traveling around a backing roller (2), especially a web of paper or cardboard, with a resilient doctor blade (3) that is secured at the foot to a pivoting doctor beam (4) and with an element (10) for supporting the doctor blade above where it is secured to the side that faces away from the backing roller, whereby the attachment (8) of the foot of the doctor blade can be set independently of the supporting element to adjust the pressure of the doctor blade against the backing roller. The device has means (13-22) for pivoting the doctor beam to compensate for the change in the angle of the point of the doctor blade that results when the foot of the doctor blade is set.

Abstract: An apparatus for immersing circuit boards in a liquid. The apparatus of the invention generally comprises (a) a conveyor for moving circuit boards along a predetermined path and (b) an immersion pan positionable about at least a portion of said conveyor and operative to hold a quantity of liquid therein such that circuit boards passing along the conveyor will become immersed in said liquid. The conveyor portion of the apparatus may comprise a "roller conveyor" having a series of vertically opposed roller pairs. The immersion pan portion of the apparatus will preferably fit beneath the conveyor and will be provided with an infusion of liquid such that liquid will rise within the pan, thereby submerging at least a portion of the conveyor. Circuit boards moving along the conveyor path will thus become immersed in and pass through the liquid. The liquid may be allowed to cascade over one or more edges of the immersion pan.

Abstract: This publication describes a short-dwell coater for coating a web with coating mix against a rotating backing roll. The coater comprises a support structure, a feeder means adapted to the front lip for feeding the coating mix into an application zone formed between the backing roll and the support structure, and an actual doctor blade, adapted into the support structure to press against the web, with which blade the excess coating mix passing over form the application zone can be removed. According to the invention, a separate predoctoring blade is adapted at a short distance before the actual doctor blade in the machine direction of the web for smoothing out disturbances in the coating mix flow before the mix proceeds up to the actual doctor blade.