Polytetrafluoroethylene real twist yarn and method of producing the same

European Patent Office Patent

PATENT NO 2290140
APP PUB NO EP-2290140-A1
SERIAL NO

10006252

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Abstract

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The PTFE real twist yarn of the present invention is a PTFE real twist yarn (41) obtained by twisting a polytetrafluoroethylene (PTFE) multi-filament slit yarn. The yarn has a circular cross-section with a circularity in the range of 10/8 to 10/10, where the circularity is expressed by the ratio between the major axis width and the minor axis width, the average fineness of filaments (42) is in the range of 1.5 to 200 dtex, a fineness D is in the range of 50 to 6000 dtex, and a twist coefficient K expressed by Formula (1) is in the range of 10000 to 35000: t ¢ w ¢ i ¢ s ¢ t c ¢ o ¢ e ¢ f ¢ f ¢ i ¢ c ¢ i ¢ e ¢ n ¢ t K = n ¢ u ¢ m ¢ b ¢ e ¢ r o ¢ f t ¢ w ¢ i ¢ s ¢ t ¢ s T × t ¢ h ¢ e f ¢ i ¢ n ¢ e ¢ n ¢ e ¢ s ¢ s D o ¢ f t ¢ h ¢ e P ¢ T ¢ F ¢ E r ¢ e ¢ a ¢ l t ¢ w ¢ i ¢ s ¢ t y ¢ a ¢ r ¢ n 1 / 2 where the number of twists T denotes the number of twists per meter and the fineness D is a total fineness.

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Patent Owner(s)

Patent OwnerAddress
YEU MING TAI CHEMICAL INDUSTRIAL CO LTDTWTAICHUNG

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Inventor(s)

Inventor Name Address
HUANG JAMES TAICHUNG TAIWAN
KUO WEN-I TAICHUNG TAIWAN
CHOU CHIN-CHUN TAICHUNG TAIWAN
CHOU CHIN-CHA TAICHUNG TAIWAN
LEI-TI HUANG TW

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