Method for manufacturing a bowling pin

A method for manufacturing a plastic bowling pin using a first mold having a first molding cavity of a smaller dimension than the predetermined outside dimension of the bowling pin and having a first pair of axial rods each having a predetermined diameter and displaceable into and from the first molding cavity along a longitudinal axis, and a second mold having a second molding cavity of a substantially same dimension as the outside dimension of the bowling pin and having a pair of second axial rods each having a predetermined diameter and displaceable into and from the second molding cavity along a longitudinal axis comprising:

• molding a core portion of the bowling pin by forcing molten synthetic resin to be flowed into the first molding cavity of the first mold after the first pair of axial rods has been inserted into the first molding cavity forming a substantial void in said bowling pin from both top and bottom of said bowling pin;
• removing the first pair of axial rods therefrom after the synthetic resin has been solidified;
• and
• molding a skin layer on the external surface of the molded core portion by forcing molten synthetic resin to be flowed into a space between the external surface of the molded core portion and the second molding cavity of the second mold after the molded core portion has been positioned relative to the second molding cavity with inserting the second pair of axial rods into apertures formed in the core portion by the first pair of axial rods and forming apertures in said top and bottom of said bowling pin requiring a plug in each aperture.