Manufacture of synthetic filaments

A method for the manufacture of potentially crimpable, synthetic linear polymer filaments which comprises the steps of (A) melt spinning a plurality of filaments, (B) initially partially cooling the hot filaments evenly with a stream of radial outflowing quence gas over a distance commencing from the spinneret and extending 3 to 10 inches below it, and (C) asymmetrically cooling the filaments further by causing them to contact a continuously renewed thin film of liquid less than the thickness of the filaments which liquid is at a temperature effectively below that of the filaments after step (B), the filaments contacting the film of cooler liquid in such manner that one side only of each filament contacts the film of liquid.