Polyester fiber

Details Polyester fiber Polyester fiber

D - Textiles, Paper

01

F

18/622

D01F 6/62 (2006.01)

Patent

CA 1037673

IMPROVED POLYESTER FIBER Abstract of the Disclosure An improved polyester filament (i. e,, a principally polyethylene terephthalate filament) suitable for use in commercial applications is provided having a unique internal structure. The filament possesses an interconnected highly oriented crystalline microstructure coextensive with its length coexisting with an interdispersed substantially disoriented non-crystalline phase. The filament microstructure imparts inter alia a propensity for the filament to undergo a low degree of shrinkage under a high degree of force at an elevated temperature as evidenced by a modulus ratio (as defined) of at least 0.1. The filament exhibits a relatively high initial modulus, coupled with a relatively high crystalline orientation function, and a relatively low amorphous orienta- tion function. - 1 -

210009

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