Method and device for the manufacture of yarns, cords, strips, strips sections, etc, sharp edges, starting from plastic masses, dispersionset of emulsions, artificial and natural

摘要

530,379. Extrusion nozzles. KOLNISCHE GUMMIFADENFABRIK VORM. F. KOHLSTADT & CO., and EILFELD, F., (trading as EILFELD F. [Firm of]) June 6, 1939, No. 16570. Convention date, July 9, 1938. [Classes 70 and 87 (ii)] [Also in Group IV] In forming sharpedged thread, profiled strips &c. by extrusion of a plastic material or a coagulable substance, the extrusion nozzle is formed so that the edges leave the nozzle before the side surfaces. A squareshaped nozzle opening is formed by cutting along the lines c'-c' in a hemispherical depression b in a flat plate. The sides of the opening may have the form shown at d or be curved, and may be conically-widened towards the exit.