The utility model provides a mould heap, injection mold that is used for the prefab of the radial flange in molding area to and the molding system, the prefab is used for forming the container of taking the lid, beverage can for example. The mould is piled including a plurality of mould male parts, mold core portion male part, drawing of patterns ring, die cavity male part and runner male part, and their configurations are for working in coordination in order to prescribe a limit to the molding chamber when fixing a position in the molding structure for at molding prefab wherein. The mould ispiled including a plurality of die parting lines, and it is injectd between the mould male part to hold its relative motion, but make their with respect to each other shift towards demoulding structure, so that take out the prefab. The molding chamber is injectd between drawing of patterns ring sum die cavity male part including the flange part that is used for the radial flange of molding, this flange part. The die cavity of injecing between drawing of patterns ring and die cavity male part breaks away from the die parting line edge rather than the flange part extension in the direction follow molding chamber of quadrature basically.