MULTIFILAMENT YARNS OF THERMOPLASTIC POLYMERS BASED ON TETRAFLUOROETHYLENE, AND FIBERS OBTAINED THEREFROM

MULTIFILAMENT YARNS OF THERMOPLASTIC POLYMERS BASED ON TETRAFLUOROETHYLENE, AND FIBERS OBTAINED THEREFROM

A multifilament yarn of a thermoplastic polymer based on tetrafluoroethylene, having high mechanical strength and dimensional stability at high temperatures (200-250.degree.C), is prepared by melt extrusion through a die characterized by a hole density comprised between 10 and 150 holes/cm2 and pro-...

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Bibliographische Detailangaben
Hauptverfasser: MIANI, MARIO, AJROLDI, GIUSEPPE, VITA, GIANDOMENICO
Format: Patent
Sprache:eng ; fre
Schlagworte:
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
TEXTILES
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Beschreibung
Zusammenfassung:A multifilament yarn of a thermoplastic polymer based on tetrafluoroethylene, having high mechanical strength and dimensional stability at high temperatures (200-250.degree.C), is prepared by melt extrusion through a die characterized by a hole density comprised between 10 and 150 holes/cm2 and pro- vided with a cooling system of the emerging yarn of high effi- ciency and uniformity. The multifilament yarn can be subsequently drawn to obtain a fiber with even further improved tensile strength and modulus.