| 摘要 |
A process for coating a substrate is provided which includes the following steps: (a) applying a waterborne base coat composition to a surface of the substrate; (b) applying infrared radiation at a power density of 1.5-30.0 kW/m<2 >and a first air stream simultaneously to the base coat composition such that a pre-dried base coat is formed upon the surface of the substrate; and (c) applying a second air stream in the absence of infrared radiation to the base coat composition such that a dried base coat is formed upon the surface of the substrate. Various embodiments of the invention are disclosed including continuous, batch, and semi-batch processes, which may include additional process steps, such as subsequent application of a topcoat. The process may be used to coat a variety of metal and polymeric substrates, for example, those associated with the body of a motor vehicle.
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