| 摘要 |
A center-portion molding member (21) having a center-portion transfer shape surface (30) and a side wall surface (211) is inserted and fitted in a frame-portion molding member (38) having a frame-portion transfer shape surface (23) to form a part of a cavity (28). The center-portion molding member (21) has a groove portion (212) in the side wall surface (211). The groove portion (212) protrudes from the frame-portion transfer shape surface (23). Before injected resin transfers a shape of the center-portion transfer shape surface (30), the side wall surface (211) of the center-portion molding member (21) is sealed with the resin to form, between the center-portion transfer shape surface (30) and the resin, a space (39) in which gas is confined. |
