PROCESSES FOR DRYING TOPCOATS AND MULTICOMPONENT COMPOSITE COATINGS ON METAL AND POLYMERIC SUBSTRATES

摘要

The present invention provides processes for drying and/or curing topcoating s and multicomponent composite coatings applied to surfaces of metal or polymeric substrates which include applying infrared radiation and warm, low velocity air simultaneously to the coating for a period of at least about 30 seconds and increasing the substrate temperature at a predetermined rate to achieve a specified peak temperature. Infrared radiation and hot air are applied simultaneously to the coating for a period of at least about 3 minut es and the substrate temperature is increased at a predetermined rate to achiev e a specified peak temperature, such that a dried and/or cured coating is form ed upon the surface of the substrate.