Blow molding trimming

摘要

A blow molded container ( 10 ) having a trimmed nonround opening ( 12 ) is blow molded from a preform ( 36 ) and then positioned by a positioner ( 50 ) of a nonround trimmer ( 16 ) that includes a rotary driven arm assembly ( 56 ) having a knife holder ( 60 ). A guide ( 66 ) guides the knife holder ( 60 ) in a nonround path to perform the trimming.