Abstract:
Described herein is apparatus for applying processing solution to a photographic material using a spray bar. The spray bar can be used to meter processing solution and/or air onto the material being processed, to agitate and/or mix processing solutions on the material using air jets, to air knife the material to remove processing solutions therefrom, and to dry the material.
Abstract:
A method and apparatus for two-side coating of a light base weight printing paper web containing mechanical pulp or recycled fiber. The first side of a web (5) is coated in a first coating station (1), the coating applied to the first side is dried at least partially in a first dryer unit (3). The second side of the web (5) is coated subsequent to the drying of the first side in a second coating station (2), and the coating applied to the second side is dried at least partially in a second dryer unit (4). Both coatings are formed by applying a required amount of coating mix onto the perimeter of respective soft film-coating rolls (22) and subsequently transferring the coat film to the web (5) in a nip (N.sub.1) formed between a respective backing roll (24) and the respective soft film-coating roll (22).
Abstract:
An apparatus for simultaneous electrical discharge treatment and adhesive application to a polymer component. The apparatus includes a jig having an electrically conductive region and a dispenser having an electrically grounded dispensing tip with a dispenser orifice which functions as an electrode as it is moved across an upper surface of the polymer component in close proximity thereto. During such movement, the tip coacts with the jig which underlies the component and to which high voltage is applied to create an electrical discharge which is directed onto the component and makes the surface thereof susceptible to bonding with adhesive applied to the component from the tip virtually simultaneously with the discharge.
Abstract:
A method and apparatus for applying adhesive onto a porous web having opposed first and second sides, comprises at least one adhesive dispenser which applies adhesive in a first direction onto an adhesive application area located on the first side of the web. An air blower directs a stream of pressurized air through an opening in a plate over which the porous web passes so that the air stream contacts the second side of the porous web in an area opposite the adhesive application area. This prevents bleed-through of adhesive through the porous web without affecting the pattern of adhesive on the first side thereof.
Abstract:
A marking head for applying a marking composition to locations on elements. The marking head has a marking rod with a marking end and a motor for reciprocating the marking rod through a chamber filled with a marking fluid. The marking fluid is uniformly applied to the marking end of the marking rod by the use of a diffuser and a rod scaper each of which are positioned adjacent to the chamber filled with the marking fluid.
Abstract:
A batch of seed materials is film-coated with a gas- and water-permeable, thin, adherent, uniform non-phytotoxic continuous surface film of a polymeric film-former, by (a) establishing and continuously maintaining a unit compact volume of moisture-containing viable seed materials in a state of continuous agitation and (b) continuously spraying and coating this unit compact volume of seed materials with an adjusted essentially steady predetermined flow rate of a liquid solution or suspension of a polymeric film-former, while simultaneously (i) continuously positively drying the coated seed materials by continuously directing a predetermined flow rate of a gaseous feedstream thereagainst that is at a controlled temperature less than that would adversely affect the viability thereof, (ii) continuously monitoring the temperature within the unit compact volume of seed materials in a state of continuous agitation and (iii) continuously maintaining a moisture content in the final product coated seed materials essentially at the same level as that in the uncoated seed materials, and whereby (c) the final product film-coated seed materials have essentially the same shapes as the corresponding uncoated seed materials.
Abstract:
Excessive heat-generating current levels produced in semiconductive materials by electrostatically assisted coating apparatus employed to, for example, improve the uniformity of a coating applied to such materials are avoided by passing an auxiliary current through said semiconductive materials in the same region and in a direction opposite to that of the current produced by said electrostatically assisted coating apparatus such that the difference between the said current produced by said electrostatically assisted coating apparatus and the said auxiliary current is less than or equal to a predetermined value.
Abstract:
A device for laying down a plastic bead on an essentially plane surface of a part consists of a table supporting a movable frame having a drive track. The drive track cooperates with a pinion rotatable about an axis fixed to table so as to drive the frame. The part is mounted on the frame. A slotted rod is fixed to the frame and cooperates with a roller mounted on the table for preventing the frame from rotating about itself. A gun for depositing the bead is positioned above the axis of the drive pinion. As the drive pinion rotates the frame, the gun will deposit a bead on the part mounted on the frame along a line corresponding to the contour of the drive track.
Abstract:
Machine and method for applying liquid coatings to cylindrical articles such as plastic continues, in which each article during movement by a rotary transport is caused to spin about its cylindrical axis and a liquid coating is applied to the cylindrical surface of the spinning container. A wiper spreads the coating uniformly and a drier dries the coating. The ratio of orbital movement of the containers and the rate and direction of spin of the containers may be adjusted and controlled.
Abstract:
A novel method and apparatus for manufacturing magnet wire in a continuous process by which coatings of a flowable resin material may be applied concentrically to a moving elongated filament in thicknesses of about 16 mils or less. The filament can be a bare copper or aluminum conductor having round or rectangular configuration or an insulated conductor upon which a top or an intermediate coat of material is desirably applied. Coatings of one and two mils also can be applied by the method of the invention. By the method and apparatus of the invention, magnet wire can be manufactured by continuously drawing the wire to size, annealing the wire, if necessary, insulating the wire with one or more coats of flowable resin material, curing the resin material, if necessary, hardening the resin material, and spooling the wire for shipment, without interruption at speeds limited only by the filament pay-off and take-up devices used. The apparatus of the invention utilizes the flowable resin material to center the filament in a die, the size of the die controls the thickness of the coat to be applied. In the apparatus of the invention, only the resin material being applied to the filament is in contact with the filament. Thus, the mechanical wear normally associated with centering dies used in extrusion process and like devices is completely eliminated. Further, the apparatus and method of the invention can be used to apply coats several times thinner than is possible with conventional extrusion apparatus and of materials different than those conventionally extruded onto filaments. In specific embodiments using heat softenable materials or melts, curing is no longer required; and thus, the need for curing, catalytic burners and the like as well as all concerns regarding atmospheric pollution are eliminated. The coated filaments and magnet wire made by the apparatus and in accordance with the method of the invention have coatings which are surprisingly concentric and continuous when compared to magnet wire made by conventional methods and apparatus.