Patent ID: 6277231
Filing Date: 2001-08-21
Classification: B29C,B29D,B29L

Abstract:
A process for manufacturing a honeycomb structure made of a thermally fusible material, comprising:continuously extruding, with the aid of a multislot die, parallel sheets of the thermally fusible material inside a cooling chamber, with the creation of a seal between longitudinal edges of the parallel sheets and walls of the chamber, the various sheets defining, among themselves and with the walls of the chamber, compartments;creating, in the chamber and from an end located on a die side, a vacuum in every other compartment so as to deform and attract, in pairs the extruded sheets in order to carry out localized welding over their entire height;filling, from the end located on the die side, every other compartment, these alternating with the above compartments, with a liquid coolant; andalternating, in each compartment, the creation of a vacuum and the filling with the liquid coolant in order to obtain a solidified honeycomb structure in the cooling chamber, the solidified honey comb structure having cells perpendicular to an extrusion direction.