Kopperschmidt-mueller Gmbh & Co. Kg

Bollhoff Verfahrenstechnik Gmbh & Co. Kg

Range Und Heine Gmbh

Werner Heine

Thomas Muller

Helmut Kurz

An arrangement for coating an object with water soluble or water dilutable coating materials during a spraying process, has an elongated collecting wall adjacent the object to be sprayed located in a coating region, a collection member connected to a lower portion of the wall, a unit for at least partially cooling the the wall and the collection member located in the coating region, and at least one air moisturizing unit located in the coating region.

Arrangement for coating objects with water soluble and water diluteable coating materials

Successive plate-like substrates are transported in a horizontal plane on a first conveyor beneath a first spray coating device on their way toward an inverting device which turns successive substrates through 180.degree. and deposits them on the supporting elements of a second conveyor which advances the once coated substrates beneath a second spray coating device. The twice coated substrates are advanced through a drying zone wherein they are acted upon at both sides by infrared heaters which expel the surplus of moisture. The supporting elements are in mere linear or point contact with the coated undersides of inverted substrates above the second conveyor. Such supporting elements can engage uncoated marginal portions of the substrates or the coated portions of undersides of substrates above the second conveyor. Coating material which bypasses the substrates is intercepted and collected, and the supporting elements are cleaned at regular intervals.

Apparatus for coating both sides of plate-like substrates

Apparatus for electrostatic spray coating of plate-like substrates, particularly printed circuit boards, has one or more endless conveyors or one or more conveyors of finite length with one or two pairs of strip-shaped holding elements for the edges of substrates. The holding elements engage a substantial part or the entire edge of the substrate which is transported through one or more spray coating stations. Each holding element is made of or contains an electrically conductive material, and the holding elements are grounded, at least during travel through the coating station or stations. The holding elements can engage the edges of substrates by friction or they are coated with an adhesive so that they adhere to the edges of the substrates.

Method of electrostatically spray coating edge-supported substrates

Apparatus for spray coating plate-like or otherwise configurated workpieces has an endless apertured conveyor which transports a series of workpieces along a horizontal path beneath a rotary atomizer which sprays coating material onto the advancing workpieces. The coating material which bypasses the workpices and passes through the apertures of the conveyor impinges upon and gathers on a web of paper or non-woven fibrous material which is advanced at a speed less than the speed of the conveyor so that the web can be used with great economy because it is or can be advanced at a rate such that, or only when, its portion which is in the path of sprayed coating material cannot gather and retain additional coating material.

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Winnenden, Germany

Werner Heine