Patent ID: 8414823

Claim:
A process for producing a container consisting of a layer (1) and a top layer (2), wherein said layer (1) comprises polycarbonate and said top layer (2) comprises polyarylethersulfone or polyarylsulfone comprising a) melting polycarbonate on an extruder at a temperature of 230 to 320° C., b) melting polyarylethersulfone or polyarylsulfone on a further extruder, c) shaping the melts obtained from steps a) and b) by coextrusion into a tube and enclosing said tube in a mould, d) inflating said tube inside said mould and pressing said tube against the wall of said mould to form the shape of the container, and e) trimming and cooling the container obtained from d), wherein the top layer (2) forms the interior layer of the container.