Disclosed is a preferred mold design for producing plastic, molded preforms, which may be blow-molded into a container of a final, desired shape. A preferred mold includes a temperature control system for maintaining the preform mold at a desired temperature. The temperature control system can pass fluid...http://www.google.es/patents/US7578668?utm_source=gb-gplus-sharePatente US7578668 - Mold assembly having a pressure reducing device
