Abstract:
In a device for applying flowable substances (6) to a flat support by means of a magnetically applied coating cylinder (4), the mechanism (1, 14) producing the magnetic application force, as well as the coating cylinder (4), are arranged obliquely in relation to the vertical direction (3). A system (5) for feeding the substance (6) to be applied is provided for the coating cylinder (4).
Abstract:
A system for forming a textured surface on a geomembrane (12) includes support surface (20), a first set of rollers (14, 16) for passing the geomembrane, a heater (22) positioned in proximity to the desired surface of the geomembrane to heat the geomembrane to a desired temperature, and a particle distributor (26) positioned above the geomembrane to apply solid particles of desired size and geometry onto the surface of the geomembrane. A second set of rollers (40) is positioned adjacent to the surface to receive the particle-coated geomembrane after the particles have been distributed thereon. The heater includes a preheater (22) positioned on one side of the particle distributor and a postheater (24) positioned on an opposite side of the particle distributor. The preheater (22) serves to elevate a temperature of the surface of the geomembrane prior to receiving particle thereon, while the postheater serves to bond the distributed particles onto the surface of the geomembrane.
Abstract:
A coater incorporates a die (42), a reservoir (46), a gravure cylinder (48), and a doctor blade (50) for applying coating fluid to a moving surface (44). The flow rate of coating fluid to the gravure cylinder (48) is controlled to equal the rate at which coating fluid is consumed by the coating process. This eliminates the need to recycle surplus coating fluid. The coating fluid can be quickly and conveniently replaced with a solvent in the reservoir (46) when coating is not being performed to reduce the occurence of coating defects arising from excessive evaporation of solvent and premature solidification of coating fluid.
Abstract:
The invention is directed to preventing an amount of coating from being locally increased at the end of an area being coated, and making a thickness of coating precisely constant over the entire area being coated. A spacing between a D roller (4) and a C roller (1) is switched in two steps, large and small, at suitable time intervals. A thick coating layer (6a) on the C roller (1), controlled when a spacing between the D roller (4) and the C roller (1) is large, is transferred and applied to a backing sheet (3) in a state, in which a B roller (2) and the C roller (1) contact each other through the backing sheet (3). A spacing between the B roller (2) and the C roller (1) is enlarged in synchronization with thin coating layer (6c) on the C roller (1), which is controlled when a spacing between the D roller (4) and the C roller (1) is small, reaching a position of transfer, so that the coating is prevented from being transferred and applied to the backing sheet (3).
Abstract:
A method for depositing continuous cohesive, nongranular tightly adhering deposits on a substrate; deposits made from a starting material which is a small particle material such as diamond powder; or powders of complex materials such as superconducting materials such as of the Y-B-C-O type; discrete deposits may be made and thereafter built up on the substrate.
Abstract:
A process and apparatus therefore for forming a layer of metal on a substrate which comprises the steps of: forming a bath of a molten metal in a vessel (18); circulating the molten metal in the vessel (18) such that the molten metal is projected in the form of a standing wave (22) above the upper surface of the vessel; transporting a substrate (14) along a path which traverses the upper surface of the vessel (18); and transferring the projected molten metal to one surface of the substrate either directly by directly contacting the projected molten metal with the surface of the substrate or indirectly by transferring the projected metal to a transfer roll (24) which in turn transfers the molten metal to substrate (14) which is in contact with the roll (24). The thickness of the metal coating is controlled by means of a horizontally and vertically adjustable chilling roll (26) contacting the uncoated surface of the substrate (14).
Abstract:
A layer of coating material (104) is applied to a rotating applicator roller (100) which deposits the layer on a substrate (112) like thin foils, laminates, paper and cardboard being moved passed it. The substrate (112) is forced against the rotating roller (100) by a stream of gas (A) delivered against the underside of the substrate (112).
Abstract:
Apparatus for applying a coating of an insulation lacquer to a moving surface of a strip comprises a rotatable roller (6) whose surface defines a multiplicity of cells and a reservoir (10) containing a bath of heated organic or organic/inorganic insulating lacquer in which a part of the roller (6) surface is immersed when rotating. Insulating lacquer enters the cells of the roller (6) surface and excess lacquer is wiped from the roller surface. A rotatable applicator roll having a substantially plain surface free of grooves or other indentations is rotated with its surface in contact with the surface of the lacquer carrying roller whereby lacquer present in the cells of the roller (6) is transferred to the surface of the applicator roll (1). The surface to be coated is moved continuously past and in contact with the roll surface to apply a uniform coating of lacquer to that surface. The strip is preferably a strip of non-oriented electrical steel.
Abstract:
The invention concerns a device for wet coating, in particular printed circuit boards with lacquer using at least one applicator roller (20,21) sparing at least one edge area of the printed circuit board. The device uses a ductor (R) situated between a lacquer reservoir and the printed circuit board that can move in an axial direction, one edge of which touches the applicator roller (20,21). The ductor (R) is designed so that in particular it is possible to also remove excess lacquer, for example photo-resistant lacquer from a multilayer board, from both longitudinal edges of the printed circuit board without any residue. This is also possible for multilayer boards of varying widths in particular. By laterally displacing the lacquer from the respective peripheral edges of both applicator rollers (20,21) that are to kept free of lacquer, this lacquer is directly fed back into a lacquer reservoir via the outer edge area of the pertaining applicator roller without leading to, as in previously known solutions, an accumulation of lacquer, dirtying and breaking-down of the machine.
Abstract:
The invention concerns a method for application of an adhesive or equivalent onto a moving material web, wherein the adhesive is applied by means of at least one applicator device (20) through at least one nozzle (30) onto the face of the material web to consititute an adhesive strip (G) in the longitudinal direction of the material web (W). In the method, the material web (W) is made to run at an invariable distance from the nozzle (30) end placed next to the material web (W). The adhesive is passed onto the material web (W) through the nozzle (30) in the applicator head (31) of the applicator device (20), and the applicator head (31) and the nozzle (30) for the adhesive are washed for the next cycle of use in a container space (23) in the applicator device (20). Further, the invention concerns a device for application of an adhesive or equivalent onto a moving material web (W), which device (20) comprises frame constructions (21, 22, 23), an adhesive-applicator head (31), a container spaced (23), and at least one adhesive nozzle (30). The applicator head (31) is provided with a support face (38) or support faces (34, 35), over which the material web (W) is passed so that the adhesive nozzle (30) is placed at a invariable distance from the material web (W). The device (20) comprises means (32, 33, 34) for transferring the applicator head (31) into the container space (23) and means (24) for washing same. Also, the invention concerns an adhesive nozzle for an adhesive-applicator device.