| 摘要 |
An apparatus and use thereof for melt spinning multifilament yarns from fiber-forming polymers at windup speeds of at least 2000 m/min is disclosed. The apparatus has a spinnerette, a cooling element for solidifying the filaments, a convergence element for the filaments and a wind-up element and having, at least between the spinnerette and the convergence element, an essentially vertical spinline. The cooling element is a porous tube which is open in the spinning direction and concentric relative to the spinline. The porous tube has disposed downstream of it a further, non-porous tube. It is particularly advantageous for the porous tube to have a length from 10 to 800 mm. It is particularly advantageous for the further, non-porous tube disposed downstream of the porous tube to have a length from 200 to 800 mm.
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