| 摘要 |
PURPOSE:To adhere a reinforcing material to a base material, cause a foamable material to be foamed and harden a resin material efficiently by a method wherein a reinforcing material containing a thermosetting resin material and a foamable material is adhered to a base material before coating the base material, and is foamed and hardened by using the heat supplied at the time of drying a coated material. CONSTITUTION:Press working of an outer panel 2 and an inner panel 5 for a door 1 or the like and assembling thereof are conducted in a car body assembling step. In a coating step B, a pretreating step 20 for carrying out degreasing, washing, a chemical conversion treatment or the like, a drying step 21, an under- coating step 22, a baking step 23, an intermediate coating step 24, a baking step 25, a top coating step 26, a baking step 27, an inspecting and touching-up step 28, etc. in that order are provided. Before the coating step B, the reinforcing material 13 containing a thermosetting resin material 11a and a foamable material 14 is adhered to the base material 2a for forming a panel at a part where stiffness is required. Then, a tunnel formed reinforcing rib 12 is provided as one body with the base material 2a by using the heat supplied for drying in the coating step B. |
