| abstract |
Disclosed is a far-infrared shielding material having high far-infrared reflectivity, high transparency, and good radio wave transmission. A metal particle-containing layer containing at least one kind of metal particles, the metal particles having 60% by number or more of hexagonal or circular plate-like metal particles, and the wavelength of the far-infrared shielding material A far-infrared shielding material in which a ratio (B / A) of a maximum reflectance B (%) in an infrared light region having a wavelength of 3 μm or more to a reflectance A (%) at 550 nm is 3 or more. [Selection figure] None |