Patent ID: 7150625

Claim:
A system for forming a hole through a compression area of a blow molded article, the system comprising: a mold having at least a first mold part and a second mold part, the first and second mold parts adapted to move toward each other in a closing direction to close the mold and adapted to move apart in an opening direction to open the mold, the mold having a gap between the first mold part and the second mold part defining the compression area when the mold is closed; a moveable outer core pin; an outer bore disposed inside the mold and adapted to house the outer core pin therein, the outer bore and the outer core pin having a pin axis generally oriented transverse to the opening direction and the closing direction; and a pin support disposed inside the mold adjacent the outer bore along the pin axis; wherein an end face of the outer core pin and the pin support partially define boundaries of the gap; wherein the outer core pin moves toward and strikes the pin support along the pin axis to cut out a portion of the compression area during the blow molding process to provide a hole in the blow molded article; and wherein the end face of the outer core pin includes a sharp perimeter to cut the portion of the compression area when moving toward the pin support.