Every injection mold design has to have a gate, or an opening through which the molten plastic is injected into the cavity of the mold. The type and size of gate plays a very significant role in the process of injection molding and must not be overlooked.” (Ray Hough, 1/22/2011)
(Wikipedia, Injection Molding, 1/22/2011)

Injection Molding
Injection Molding Edge Gates
Processing
   

Recent US Patents

10/12/2010
7,811,654
Gate-processed moldings

Shoji and Fujii  of Mitsubishi Electric, Japan have developed a method for cutting off a gate formed, on resin moldings, during molding where  an introducing section is molded on the gate for cutting off the gate. (RDC 1/10/2011)