Injection molding apparatus for producing plastic lids

A mold apparatus for injection molding of plastic parts having tops and depending skirts comprising, a cavity mold part defining at least one main cavity for one of said plastic parts, a core mold assembly complementary with said cavity mold part, said core mold assembly including an outer core mold part defining a center opening, an outer ejector part positioned for movement within said center opening of said outer core mold part, said outer ejector part and said outer core mold part defining at least one supplemental sidewall cavity in communication with said main cavity, and an inner stem ejector part positioned Within said outer ejector part, said outer ejector part and said inner stem ejector part being movable relative to said outer core mold part and also relative to one another, means for moving said outer core mold part and said outer ejector part between a molding position defining said at least one supplemental sidewall cavity and an open position wherein said outer core mold part and said outer rejector part are separated, a stripper part positioned adjacent said outer core mold part, means for moving said stripper part into engagement with such skirt of such one of such plastic parts when said outer core mold part and said outer ejector part are in such open position to rotate and move said plastic part from said at least one supplemental sidewall cavity.