| 摘要 |
A coating method for forming a laminated coating film including a lower layer formed on a base material and an upper layer formed on the lower layer including: preparing a thermosetting coating material as a lower layer-coating material and preparing a thermosetting coating material as an upper layer-coating material; forming an uncured laminated coating film by applying the lower layer-coating material and the upper layer-coating material on the base material using a wet-on-wet technique; and simultaneously curing the lower layer-coating material and the upper layer-coating material by baking the uncured laminated coating film. In the preparation step, the lower layer-coating material and the upper layer-coating material are selected so that an absolute value of a difference in shrinkage ratio between the lower layer and the upper layer coating materials is 2.0% or smaller at a late stage of the baking step. |
