Polyester yarn production

Details Polyester yarn production Polyester yarn production

D - Textiles, Paper

01

D

18/622

D01D 5/10 (2006.01) D01D 5/088 (2006.01) D01F 6/62 (2006.01)

Patent

CA 1037672

ABSTRACT A method and apparatus are disclosed for the production of a novel industrial polyester filament yarn of improved uniformity wherein a plurality of filaments are melt-spun into a heated zone coupled with controlled cooling. The yarn produced has improved long and short term Uster uniformity and improved uniformity of physical properties, particularly breaking strength, as shown by a reduced standard deviation of breaking strength. The yarn is produced by melt spinning into a heated zone which maintains the filaments molten for intervals below the spinneret face and subsequently quenching the filaments with a radial outflow of cooling gases, thereby producting a low birefringence yarn which is capable of being drawn at high draw ratios to high tenacities.

146417

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