MOLD

摘要

A mold (1) is provided with a cavity (11). The cavity (11) has a side surface (121), a bottom surface (122), and a corner surface (113). The corner surface extends from the lower end of the side surface to a side end of the bottom surface. In a cross-sectional view, the corner surface is located inside both an imaginary surface formed by extending the side surface and an imaginary surface formed by extending the bottom surface. Also, in the cross-sectional view, the corner surface is formed by disposing circular arc-shaped curved surfaces (131, 132) in such a manner that the curved surfaces extend in steps from the lower end of the side surface toward the side end of the bottom surface so as to be recessed obliquely downward and outward.