Bottles, containers and other articles are formed from polypropylene compositions that include a reheating agent, such as antimony, carbon black, graphite, titanium, copper, manganese, iron, tungsten, graphite, infra-red absorbing dyes or other infra-red absorbing material. The reheating time for the...http://www.google.fr/patents/US7303795?utm_source=gb-gplus-shareBrevet US7303795 - Molding of polypropylene with enhanced reheat characteristics
Molding of polypropylene with enhanced reheat characteristics
