System and method for blow molding plate components for articles of footwear

A blow molding system comprising:

• a first extruder extruding a first material;
• an end die receiving the first material from the first extruder and including an inner portion, an outer portion, and a passage disposed between the inner portion and the outer portion through which the first material flows before exiting the end die as a parison;
• a controller operably coupled with the inner portion to selectively move the inner portion relative to the outer portion between an extended state and a retracted state to adjust a width of the passage;
• and
• a mold assembly defining a mold chamber having an opening at one end that receives the parison, the mold assembly including a plurality of mold cavities each facing the mold chamber and defining a profile of at least one sole component of an article of footwear.