Patent ID: 7939005
Filing Date: 2011-05-10
Classification: B29C,B29L

Abstract:
1. Apparatus for forming an object from a dose of plastics, comprising a punch, a die arrangement provided with a cavity for receiving said dose and with at least two parts reciprocally movable for shaping an outer undercut portion of said object, a chamber arrangement containing at least one fluid for applying a clamping force so as to keep said at least two parts in contact, wherein it further comprises a conduit arrangement for supplying said chamber arrangement with said at least one fluid, said conduit arrangement leading into a first chamber and a second chamber of said chamber arrangement so that said at least one fluid increases discontinuously said clamping force from an initial force applied by means of said first chamber when said dose is substantially contained in said cavity, to a final force applied by means of said second chamber when said at least two parts shape said undercut portion.