Polyester filament having excellent antistatic properties and process for preparing the same
 A polyester filament in which a polyether-polyester block copolymer is dispersed as fine striae along the filament axis, at least one of which is substantially endless. Process for preparing the same includes a melt spinning apparatus with static mixing elements interposed between separate molten polymer feed passageways and spinneret holes. 
Toray Industries, Inc.
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Y10S Y10S D01F D01D D01F
additional additional inventional inventional inventional
Masanori Itaru Tadakazu Tuneo Hideo Kiyoshi
Takeuchi Nakamura Endo Hanada Komatsu Nakagawa