Polyester filaments and method for manufacturing same

PCT No. PCT/FR97/01193 Sec. 371 Date May 25, 1999 Sec. 102(e) Date May 25, 1999 PCT Filed Jul. 3, 1997 PCT Pub. No. WO98/01609 PCT Pub. Date Jan. 15, 1998The invention concerns polyester filaments and method for manufacturing same. More particularly it concerns a filament made of glycol ethylene pol...

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Bibliographic Details
Main Authors ERIC ROCHE, PHILIPPE LAPERSONNE, FRANCK BOUQUEREL
Format Patent
LanguageEnglish
Published 02.02.1998
Edition6
Subjects
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS,ROPES OR THE LIKE
MECHANICAL FINISHING OF YARNS OR ROPES
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
TEXTILES
WARPING OR BEAMING
YARNS
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Summary:PCT No. PCT/FR97/01193 Sec. 371 Date May 25, 1999 Sec. 102(e) Date May 25, 1999 PCT Filed Jul. 3, 1997 PCT Pub. No. WO98/01609 PCT Pub. Date Jan. 15, 1998The invention concerns polyester filaments and method for manufacturing same. More particularly it concerns a filament made of glycol ethylene polyterephtalate or polynaphtalate having high mechanical properties, and a method for stretching polyester filaments. It is obtained by a stretching process comprising two steps including a first step in which a low stretching ratio is applied, to cause minimal crystallization of the polymer and, a second step with a high stretching ratio. The global stretching ratio can reach values higher than 12. The filament has in particular an expanded elastic range that enables the improvement of its useful properties, for instance for manufacturing screen printing grids.
Bibliography:Application Number: AU19970035463