ENVIRONMENTALLY FRIENDLY REACTIVE FIXTURE TO ALLOW LOCALIZED SURFACE ENGINEERING FOR IMPROVED ADHESION TO COATED AND NON-COATED SUBSTRATES

• Main Authors: STRACCIA ANN, HOLUBKA JOSEPH W, HAACK LARRY P
• Format: Patent
• Language: English
• Published: 09.08.2007
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

The present invention provides a method of increasing the surface energy of an article having a polymeric surface increasing the relative amount of nitrogen atoms or oxygen atoms within a portion of the surface to form a nitrogen or oxygen enriched surface layer. The method of the invention is advantageously applied to a vehicle body frame to facilitate adhesion of a windshield. In another embodiment of the invention a method for inhibiting sealer redeposition is provided in which a plastic component in an automobile is treated prior to being subjected to the various paint preprocessing baths.