Processes for drying topcoats and multicomponent composite coatings on metal andpolymeric substrates

摘要

The present invention provides processes for drying and/or curing topcoatings 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 minutes and the substrate temperature is increased at a predetermined rate to achieve a specified peak temperature, such that a dried and/or cured coating is formed upon the surface of the substrate.