The method involves making a hollow blow molded thermoplastic article having an integral handle. An unblown preform of polyethylene terephthalate (PET) is inserted into a blow mold and thereafter stretched by a stretch rod. Blow gas is then injected into the interior of the preform when the blow mold...http://www.google.co.uk/patents/US6733716?utm_source=gb-gplus-sharePatent US6733716 - Method of making a stretch/blow molded article (bottle) with an integral projection such as a handle
