Patent ID: 8420001
Filing Date: 2013-04-16
Classification: B29C,B29K,B33Y

Abstract:
1. A process for the manufacture of a three-dimensional object from a polymer in powder form by means of selective electromagnetic irradiation sintering, the process comprising the steps of: (i) selecting a powder comprising a polyaryletherketone (PAEK) polymer or copolymer having a melt viscosity in a range of 0.2 to 1.0 kN*s/m (ii) subjecting the powder comprising the PAEK polymer or copolymer of step (i) to selective sintering by means of electromagnetic radiation to form the object; and (iii) after completion of the object, cooling said object from a temperature which is 1-50° C. lower than a melting temperature T wherein the final crystallinity of the manufactured three-dimensional object is within a range of 5 to 45%.