| 摘要 |
PROBLEM TO BE SOLVED: To realize a bathtub free from feeling of pressure even when two persons simultaneously take a bath by visually looking large. SOLUTION: A chamfered surface 4 inclined toward the inside of a bathtub is formed between an upper edge surface 2 of a bathtub main body 1 and an inner surface of the bathtub at the whole periphery of the bathtub. This bathtub unit is molded to expand a ridgeline 5 of the surface 2 of the main body 1 and the surface 4 outward to increase the width of the chamfered surface near the center of the bathtub and to reduce a distance between the opposed inner surfaces near the center of the bathtub to be shortest. |
