A process for making a closure assembly includes placing a closure cap portion in a compression mold, introducing a melt of elastomer, pressing the melt into a septum against the cap and applying a foil barrier against the septum. The process may be performed in a rotary compression molding apparatu...http://www.google.es/patents/US5961911?utm_source=gb-gplus-sharePatente US5961911 - Process for manufacture of closure assembly
