Patent ID: 7311516
Filing Date: 2007-12-25
Classification: B29C,B29D,B29L,Y10S

Abstract:
1. A disk-substrate molding die including: a first base die; a second base die which is placed to face the first base die; a first low heat-conductivity member secured to the first base die; a stamper secured on the first low heat-conductivity member; a second low heat-conductivity member secured on the second base die; and a ring-shaped restriction member which is fit on one of the first low heat-conductivity member and the second low heat-conductivity member and is in slidable contact therewith, wherein: an end portion of the ring-shaped restriction member is positioned within a region of an outer peripheral side surface of the low heat-conductivity member which is in slidable contact therewith, the low heat-conductivity member, which is in slidable contact with the ring-shaped restriction member, covers the outer peripheral side surface of the corresponding base die, and one of the first and second base dies has a slot which receives an extending end portion of the corresponding low heat-conductivity member when the corresponding low heat-conductivity member extends to a position which covers wholly the outer peripheral side surface of the corresponding base die.