The separation of a lower mold from an upper mold in an injection molding machine is either temporarily paused or carried out at a lower speed so as to maintain deformation of a thin component within a permissible range, while a jet of air is applied to help remove the thin component from the upper mold....http://www.google.fr/patents/US5868978?utm_source=gb-gplus-shareBrevet US5868978 - Injection molding method for thin components
