Structural member
AssigneeToto Ltd.
InventorsMorio Hosokawa, Tatsuya Koga
Life of this patent
Estimating the term…
Abstract
A structural member 10 has a base material 100 and a protective film 200 covering the surface S1 of the base material 100. When a section obtained by cutting the base material 100 perpendicularly to the surface S1 thereof is defined as a cross-section, a shape of a line corresponding to the surface S1 of the base material 100 in the cross-section is defined as a surface shape, and Fourier transformation is performed on a function representing the surface shape, and the transformed function is drawn as a graph with wavelength (μm) on a horizontal axis, an average slope of the graph in a range where the wavelength is 30 μm or less is 0.0050 or less.
Claims5
A structural member comprising:
- a base material, and
- a protective film covering a surface of the base material,
- wherein,
- when a section obtained by cutting the base material perpendicularly to the surface thereof is defined as a cross-section,
- a shape of a line corresponding to the surface of the base material in the cross-section is defined as a surface shape, and
- Fourier transformation is performed on a function representing the surface shape, and the transformed function is drawn as a graph with wavelength (μm) on a horizontal axis,
- an average slope of the graph in a range where the wavelength is 30 μm or less is 0.0050 or less.
Dependencies are inferred from the claim text.