Patent ID: 8535599

Claim:
A method for forming a blow-molded container comprising: providing a two or more piece mold having a body including: a bottom section for forming the container bottom; sidewall section for forming a plurality of sidewalls; a spout section for forming a spout; a neck section for forming an upwardly converging neck member coupling the sidewalls to the spout having a convex radius transition section of approximately three inches in a container having an overall height of approximately ten inches; a die having an annular opening; a hollow mandrel positioned within the die annular opening so the opening between the die annular opening and the mandrel has a gap of about 0.006 inches and an angle of about 15°-18°; forming a parison by introducing a thermoplastic material in liquefied form through the opening between the die and the mandrel; moving said mold pieces to a closed position proximate to the die so the parison assumes an ovoid cross-section whereby the outer surfaces of the parison are positioned approximately equidistant from the interior surface of said mold; inflating said parison though the blow pin thereby bringing said parison into contact with the interior surfaces of said mold forming a container; permitting said container to cool; and, ejecting said container from said mold.