Patent ID: 6241931
Filing Date: 2001-06-05
Classification: B29C,B29L

Abstract:
A threaded lid injection mold comprising:a cavity mold portion defining the outer shape of an injection molded lid;a core mold portion defining the inner shape of the injection moulded lid, the cavity and core mold portions mating to define the shape of the lid and including means for injecting plastic into the mold to form the lid and means for separating the mold portions to permit removal of the molded lid;the core mold portion including a stationary thread forming annular ring and a co-axial rotatable center section located inside the annular ring, the center section including axially disposed engagement surfaces for turning the molded lid upon rotation of said center section after a lid has been molded and the mold portions have been separated; anddrive means for rotating the center section.