Question

The extrusion die for a polyethylene parison used in blow molding has a mean diameter of 24.0 mm. The size of the ring opening in the die = 2.2 mm. The mean diameter of the parison is observed to swell to a size of 28.0 mm after exiting the die orifice. If the diameter of the blow-molded container = 130 mm, determine (a) the corresponding wall thickness of the final container and (b) the inside diameter of the parison.

Answer 1