Method and Apparatus for Applying a Coating on a Substrate

• Main Authors: PERSOONS ROSITA, GEERINCKX ERIC, GEDOPT JAN
• Format: Patent
• Language: English
• Published: 04.09.2008
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; NOZZLES; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

A method for applying a coating ( 4 ) on a substrate ( 1 ), includes: -scanning a laser beam ( 2 ) along a line on the surface of said substrate. The method also includes supplying a coating forming material from a supply system ( 3 ), the system moving along the same line as the laser beam but coming up behind the laser beam, so that the coating forming material is deposited on a spot which has previously been heated by the laser beam to a temperature above the melting temperature of the coating forming material. Substantially no physical contact occurs between the laser beam and the coating forming material. Preferably, the method further includes a second step of scanning the surface a second time with the laser beam, without adding coating forming material during the second step.