Abstract: Spray coating, particularly flat spray coating of circuit boards. Applicant's method of conformal coating, eliminates "railroading" at the edges of the flat spray web and assures precise control of the amount of coating material placed on the circuit board surface.The method includes longitudinally advancing a pressurized coating over a surface to be coated, while simultaneously feeding the coating in a flat spray pattern, and triggering feeding "ON/OFF" so as to proportion the amount of coating being fed onto the surface and to reduce "fishtail" at the edges of the flat spray pattern.

Abstract: The surface quality and luster of galvanized wire produced by the gas jet wiping method and cooled by jets of a cooling fluid may be improved by exposing the wire to a reactive gas atmosphere containing sulphide or chloride radicals after the wire has passed through the gas jet wiping nozzle and before it is contacted by the cooling fluid. The wire is exposed to the reactive gas atmosphere for a sufficient length of time to form a protective surface coating of metal sulphide or chloride.

Abstract: A novel method and apparatus is disclosed for the coating of a support or moving web using curtain coaters during the start-up and shut-down of a free falling liquid curtain. The apparatus is typically a catch pan positioned between a first and second edge guide and in close proximity to a support. The catch pan includes a main catch pan surface and first and second opposing sides each having a shim projecting out along the upper edge thereof and into contact with the first and second edge guides, respectively. Each shim strips liquids from the adjacent edge guide, and then directs such liquids onto the catch pan surface during start-up and shut-down without the deposition of excess liquids on the support, web, or coating roller. Means are provided for retracting the catch pan and controlling the falling curtain during start-up, and for inserting the catch pan for intercepting the falling curtain during shut-down.

Abstract: A method of coating small parts comprises placing the parts (18) on a surface capable of being moved, e.g. a conveyor (12), spraying the parts with coating composition, heating the parts to set the coating composition, moving the surface an amount sufficient to invert the parts, and repeating the sequence a multiplicity of times. An apparatus for coating small parts which comprises a movable surface (12), spray means (22), and heating means (24) wherein the movable surface comprises a conveyor belt shaped so as to invert the parts, especially a catenary curve.

Abstract: Apparatus for maintaining a relatively placid pool of liquid coating material in the trough between two nipped rolls comprises a pair of deckles, one disposed near either end of the nipped rolls, each of the deckles having an edge generally conforming to a segment of the adjacent roll to effectively form an end of the trough formed by the rolls. At least one of the deckles has one or more openings which permit the liquid coating material to flow laterally out of the trough and through the deckle at a rate proportional to the depth of the coating material in the trough. Controlling the lateral outward flow of material from the trough stabilizes both the turbulence of the liquid coating material in the trough and the surface condition of the coating material.

Abstract: Skis are waxed by a heated sole plate 18 with a porous insert 42 which is flexibly applied to the gliding surface and can be shifted in a longitudinal direction. The insert absorbs wax 50 from a tub 48 heated to a pasty consistency. Porous sheet material 46 may be applied between the sole and the gliding surface. The treatment can include the removal of remnants of old wax from the gliding surface, which is absorbed by the sheet material and softened by heating the gliding surface with the sole. The wax penetrates into the micro cavities of the ski bottom coating and any scratches in it, and the sheet material ensures that a smooth, flat and flexible layer is formed on the gliding surface.

Abstract: A method for the preparation of a stable silica organosol in a hydrophobic organic solvent is proposed. The method comprises (a) hydrolyzing a tetraalkoxy silane, e.g. tetraethoxy silane, in an alcoholic medium in the presence of a limited amount of water and ammonia as a catalyst under controlled conditions so as to produce a silica alcosol in which the silica particles satisfy the requirements that the alkoxy groups and silanolic hydroxy groups are bonded to the silicon atoms on the surface in densities of at least 3.5 .mu. moles/m.sup.2 and not exceeding 2 .mu. mmoles/m.sup.2, respectively, and the specific surface area S given in m.sup.2 /g and the average particle diameter D given in nm of the silica particles satisfy the relationship of S.times.D.gtoreq.5000, D being 1 nm or larger, and (b) admixing the alcosol of silica particles with an organosilicon compound selected from the group consisting of the compounds represented by the general formula R.sub.4-n SiX.sub.n, (R.sub.3 Si).sub.

Abstract: A disposable vehicle cover constructed of a porous flexible sheet material, optionally consisting of porous and non-porous layers, adapted to conform generally to the shape of a vehicle body and optionally includes at least one removable, tear-out section, adapted to expose a predetermined portion of a vehicle, and optionally also includes at least one impact absorbing, foam strip which is positioned longitudinally along a side of a vehicle when the cover is in use.

Abstract: A short dwell coater apparatus is disclosed for coating a web with a coating material, the web moving contiguously with a rotating backing roll. The apparatus includes a housing which is disposed on the opposite side of the web relative to the backing roll. The housing defines a chamber is connected to a pressurized source of coating material. The chamber is exposed to the web such that the web supported by the backing roll is coated with the coating material during passage of the web past the coating chamber. Each of a first and second weir extend in a cross-machine direction such that the coating chamber is bounded by the weirs and the web moving between the weirs. The first and second weirs define respectively first and second overflow gaps. The arrangement is such that during use of the apparatus, when the web moves past the coating chamber, coating material is coated onto the web while excess coating material overflows through the first and second gaps for recirculating through the coating chamber.

Abstract: An apparatus useful for continuous pan coating of edible cores which includes a coating drum arranged for rotation around an inclined axis and having an inlet opening at the upper axial end of the coating drum for reception of the edible cores, and a discharge opening at the lower axial end of the drum, so that the force of gravity urges the cores through the drum. The apparatus also includes a means for continuously driving the drum, means for providing coating material to the cores at a controllable rate, and means for delivering drying gas, such as air, to the cores also at a controllable rate while the cores are in the drum. The present invention has at least one after-treatment drum likewise arranged for rotation around an inclined axis and having an inlet opening at the upper axial end of the after-treatment drum and a discharge opening at the lower axial end, as well as a means for continuously driving the cores from the coating drum to the first after-treatment drum.

Abstract: In a device for alternatively one- or double-sided coating of a running paper web the final evening-out of the coating is made in a smoothing nip including a first roll and a counter member. The device includes means for leading the web from below upwards into the smoothing nip. At a considerable distance before the smoothing nip, there is a coating substance applicator including an applicator chamber, where the coating substance is brought into a substantially non-pressurized contact with the running web for adhering thereto and travelling therewith upwards to the smoothing nip. The web moves linearly from the applicator to the smoothing nip.

Abstract: A method of forming a coating on a web. A coating mixture includes a continuous phase of a first material and a second material contained in microcapsules. The first material and the second material interact to form the coating. The coating mixture is applied to a face of the web. The web is passed between a back-up member and a doctor blade so that the doctor blade levels the coating mixture on the web and crushes the microcapsules to cause mixing of the materials on the web to form the coating on the web.

Abstract: An adhesive supply unit is provided with a tank having fins which maximize the heat exchange area of the tank for melting hot melt adhesive. Each fin features a cut out which is of such a size and shape as to allow the placement of a block of unmelted adhesive in the tank while at the same time maximizing the surface area of the fins to improve heat transfer. An electronics control unit is located adjacent one end of the tank and has a fan located in the top of the cabinet over the control unit which fan blows in ambient air from the outside downwardly over the electronic controls contributing to an efficient cooling of the electronics. A coupler is used to align the pump and air motor located on the bottom of the device consists of a sleeve which supports the shaft and an outer bore which fits into corresponding bores in both the air motor and pump thereby aligning all three items and providing a sealing function as well.

Abstract: Disclosed is a coating apparatus for applying a resist or developing solution to a semiconductor wafer. This coating apparatus comprises a plurality of nozzles supplied with various resist from a resist source and each adapted to drip the different solution onto the wafer, a vessel in which the nozzles is kept on stand-by, while maintaining the liquids in a predetermined state in the vicinity of discharge port portions of the nozzles, when the nozzles need not be operated, and a nozzle operating mechanism for selecting one of the nozzles kept on stand-by in the vessel, and transporting the selected nozzle to the location of the wafer, whereby the resist is applied to the wafer by means of only the nozzle transported by the nozzle operating mechanism.

Abstract: A photographic resin-coated paper having no iron hoop-like upheaval can be produced by coating a running paper substrate with a molten resin while oscillating a die of extruder right and left.

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: A nodulizing machine for use in an apparatus for making loose fill insulation from mineral fibers comprises an input portal, a conduit containing a plurality of blades and an output portal. Apparatus for making loose fill insulation from mineral fibers comprises a duct extending from a source of the mineral fibers to the nodulizing machine of the present invention. The apparatus includes flow rate control means to control the flow rate of air and mineral fibers in the apparatus. A process for making loose fill insulation from mineral fibers in association with the apparatus of the invention is also disclosed.

Abstract: Apparatus and a method is shown for continuously, in an on-line production, applying a layer of coating material to the horizontal upper surface of a fiber glass blanket and the opposed vertical edge surfaces in a generally even layer and curing the applied material to form surface and edge coated fiber glass duct liner material.

Abstract: A spray painting device having a first spray mechanism and a second spray mechanism located downstream of the first spray mechanism in an assembly line along which an automobile body is conveyed. A spray head of the first spray mechanism is fixed at a constant height when spraying paint onto a side outer panel portion which is situated over a front or rear wheel of the automobile chassis, and is moved up and down when spraying paint onto a side outer panel portion which is not situated over the front or rear wheel. A spray head of the second spray mechanism is located so that a constant distance is maintained between the spray heads and the side outer panel to spray a uniform coat of paint onto the side outer panel.

Abstract: Method and apparatus for dispensing coating material on a moving substrate, such as a paper or cardboard web or the surface of a roll or the like, wherein the coating material is introduced into the coating apparatus before a coating nip and applied to the substrate through a slit of the coating apparatus directly onto the surface of the moving substrate. The coating nip and slit of the coating apparatus are formed so that a coating material smoothing member of the coating apparatus is directly supported against the moving substrate in a manner such that the free flow aperture of the slit at the coating nip is confined by the moving substrate and the surface of the smoothing member.