| 摘要 |
PROBLEM TO BE SOLVED: To provide a bathtub cover which is highly insulative, lightweight, and easy to use.SOLUTION: A rectangular bathtub cover covers the top of a bathtub having an inside edge rectangular in plan view when seen from above. The bathtub cover includes a lower side skin material facing the bathtub, an top skin material facing the lower side skin material, and a fibrous material set between the top skin material and the lower side skin material and having a linear expansion coefficient smaller than the linear expansion coefficients of the top skin material and the lower side skin material, and the direction in which fibers of the fibrous material are extended is parallel to a diagonal direction of the bathtub cover. |
