Method for producing injection molded and centrally apertured disc records

A method for forming a disc record having an annular recorded region surrounding a centering aperture therein;

• said method comprising the steps of:
• (A) injecting heated material into an annular cavity defined by a pair of mold halves through a sprue passage located at the center of said annular cavity and defined by a sprue bushing and an end portion of a punch;
• and said annular cavity and said sprue passage forming, respectively, said centrally apertured record and a sprue;
• (B) locking said punch in place while said annular cavity is displaced relative to said sprue passage so that said sprue is severed from said record along the peripheral surface of said punch end portion;
• (C) separating said mold halves to open said annular cavity while said sprue is resting on said punch end portion and while said record is held by said punch end peripheral surface;
• (D) actuating a sprue ejector member to eject said sprue from said punch end portion;
• and
• (E) actuating a record ejector member to eject said record from said punch peripheral surface.