ns in the method according to FIGS. 1a and 1b;FIG. 5A, 5B and 5C still more enlarged fragmentary views in section illustrating the crystalline conditions in the wall of an article shaped under the respective conditions a, b and c of FIGS. 2Ba, 2Bb and 2Bc.FIG. 6 is a diagrammatic view for a stabilizing and transport motion transfering means useful in connection with the method of the invention for