Disclosed is a preferred mold design for producing plastic, injection molded preforms, which may be blow-molded into a container of a final, desired shape. A preferred mold includes a combination of hardened material components and high heat transfer material components to provide a mold having good...http://www.google.com.au/patents/US7367795?utm_source=gb-gplus-sharePatent US7367795 - Injection mold having a wear resistant portion and a high heat transfer portion
