POLY-TRIMETHYLENE TEREPHTHALATE SOLID CORE FIBRILLATION-RESISTANT FILAMENT HAVING A SUBSTANTIALLY TRIANGULAR CROSS SECTION, A SPINNERET FOR PRODUCING THE FILAMENT, AND A CARPET MADE THEREFROM

In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance "a" from the axis of the filament. Each rounded tip has a radius su...

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Bibliographische Detailangaben
Hauptverfasser:	SAMUELSON, H. VAUGHN, CHANG, JING CHUNG, SAMANT, K. RANJAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPINNING TEXTILES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance "a" from the axis of the filament. Each rounded tip has a radius substantially equal to a length "b". Each tip lies on a circumscribed circle having a radius substantially equal to a length (a + b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length "c". The filament has a denier-per-filament in the range 10 < "dpf" < 35; the distance "a" lies in the range 0.00025 inches (6 micrometers) < "a" < 0.004 inches (102 micrometers); the distance "b" lies in the range from 0.00008 inches (2 micrometers) < "b" < 0.001 inches (24 micrometers); the distance "c" lies in the range from 0.0003 inches (8 micrometers) < "c" < 0.0025 inches (64 micrometers); and the modification ratio ("MR") lies in the range from about 1.1 < "MR" < about 2Ø In still another aspect the present invention is directed to a spinneret plate having a plurality of orifices formed therein for forming the solid core fibrillation-resistant, synthetic polymeric filament. Each orifice has a center and three sides with each side terminating in a first and a second end point and with a midpoint therebetween. The sides can be either concave or linear connected by either a circular or a linear end Dans un premier aspect l'invention concerne un filament polymère synthétique, résistant à la fibrillation avec noyau solide présentant trois côtés convexes de longueur sensiblement égale. Les côtés passent à travers des pointes sensiblement arrondies centrées d'une distance « a » à partir de l'axe du filament. Chaque pointe arrondie possède un rayon sensiblement égal à une longueur « b ». Chaque pointe repose sur un cercle circonscrit de rayon sensiblement égal à une longueur (a + b) et le point médian de chaque côté repose sur un cercle inscrit de rayon sensiblement égal à une longueur « c ». Le filament présente un nombre de deniers par filament de l'ordre de 10 < "dpf" < 35 ; la distance « a » est dans la fourchette de 0,00025 pouce (6 microns) < "a" < 0,004 pouce (102 microns); la distance « b » est dans la fourchette de 0,00008 pouce (2 microns) < "b" < 0,001 pouce (24 microns); la distance « c » est dans la fourchette de 0,0003 pouce (8 microns) < "c" < 0,0025 pouce (64 microns); et le rapport de modification ("MR") est dans la fourch