| 摘要 |
PURPOSE:To save the time for removing a covering material used at masking. CONSTITUTION:When a heat insulating material is sprayed to a bathtub 1 outer surface other than the bottom faces of a plurality of leg parts protruded on the bottom face of the bathtub 1, the bathtub 1 is turned upside down, plate bodies 2 are placed on the bottom faces of the leg parts provided on the bottom face of the bathtub 1 turned upside down to cover the bottom faces of the leg parts with the plate bodies 2, a beam body 3 covered with a film 32 is placed on each plate body 2, extending over each plate body 2, and the heat insulating material is then sprayed onto the bathtub 1 outer surface. |
