D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
D01D 5/253 (2006.01) D01D 5/24 (2006.01)
Patent
CA 2456054
A synthetic polymer filament is characterized by a four-sided void that extends centrally and axially through the filament. Each apex of the void extends toward the approximate midpoint of one side of the exterior configuration of the filament. The four-sided void has a modification ratio in the range from about l.2 to about 2.0 and occupies from about five percent 5% to about thirty percent 30% of the cross sectional area of the filament. A spinneret plate for producing the thermoplastic synthetic polymer filament has a cluster of four orifices centered about a central point. Each orifice includes a generally isosceles triangle-shaped major portion from which extends a pair of legs, each leg of one orifice being spaced from the leg of an adjacent orifice to define a gap therebetween.
L'invention concerne un filament polymère synthétique caractérisé par une cavité à quatre côtés s'étendant de manière centrale et axiale à travers le filament. Chaque sommet de la cavité s'étend vers le point médian proche d'un côté de la configuration externe du filament. La cavité à quatre côtés présente un rapport de modification oscillant entre environ 1,2 et environ 2,0 et occupe entre environ 5 % et environ 30 % de la zone de section transversale du filament. Une plaque de filière permettant de produire le filament polymère synthétique thermoplastique comporte un groupe de quatre orifices entourant un point central. Chaque orifice comprend une partie principale en forme de triangle normalement isocèle à partir de laquelle s'étendent une paire de jambes, chacune étant espacée de la jambe de l'orifice adjacent de manière à définir un écart intermédiaire.
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
Invista Technologies S.a.r.l.
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