Abstract: Provided is a poly(aryl-ether-ketone) (PAEK) powder suitable for use in a method for building objects layer-by-layer by electromagnetic radiation-generated sintering, which is obtained from a thermal pretreatment at a temperature between 260° C. and 290° C. and which has a melting temperature which is stable, at the build temperature, and below or equal to 330° C.

Abstract: The invention relates to a poly(aryl-ether-ketone) (PAEK) powder, for use in a method for building objects layer-by-layer by electromagnetic radiation-generated sintering, said powder being characterized in that it is obtained from a thermal pretreatment at a temperature comprised between 260° C. and 290° C., preferably between 280° C. and 290° C., and in that it has a melting temperature which is stable, at the build temperature, and below or equal to 330° C., preferably below or equal to 320° C., and more preferably below or equal to 310° C.

Abstract: Provided is a poly(aryl-ether-ketone) (PAEK) powder suitable for use in a method for building objects layer-by-layer by electromagnetic radiation-generated sintering, which is obtained from a thermal pretreatment at a temperature between 260° C. and 290° C. and which has a melting temperature which is stable, at the build temperature, and below or equal to 330° C.

Abstract: The present invention relates to a coextrusion tie comprising 10 to 35 weight % of a polymer (A) itself composed of a blend of 80 to 20 weight % of a metallocene polyethylene (A1) with a density of between 0.865 and 0.915 and of 20 to 80 weight % of a non-metallocene LLDPE polyethylene (A2), the blend of polymers (A1) and (A2) being cografted by an unsaturated carboxylic acid or its derivative, the content of which in the said blend is between 30 and 100 000 ppm; 40 to 60 weight % of a styrene/butadiene/styrene block copolymer (B) with 50 to 90 mol % of styrene; and 20 to 35 weight % of PE (C); the total making 100%, the blend of (A), (B) and (C) being such that the MFI or melt flow index (ASTM D 1238, 190° C., 2.16 kg) is between 0.1 and 10 g/10 min. The present invention also relates to a multilayer structure comprising a layer of tie according to the invention and to the objects comprising such a structure.