Method of producing polytrimethylene terephthalate staple...

Details Method of producing polytrimethylene terephthalate staple... Method of producing polytrimethylene terephthalate staple...

D - Textiles, Paper

01

F

D01F 6/62 (2006.01)

Patent

CA 2433005

A method for producing polytrimethylene terephthalate short fiber, which comprises melt-spinning a polytrimethylene terephthalate based polymer, taking the spun fiber off via a take-up roller, holding the fiber as an unstretched tow in a can under a such a condition that the undrawn tow has a water content of 0.5 to 12 wt % and the the circumstance around the undrawn tow has a temperature of 35 ~ C or lower, and then subjecting the tow to a drawing step.

La présente invention concerne un procédé de production d'une fibre courte de polytriméthylène téréphtalate consistant à filer par fusion un polymère à base de polytriméthylène téréphtalate, à enlever la fibre filée à l'aide d'un rouleau d'appel du tissu, à maintenir la fibre sous la forme d'un câble pour fibres discontinues non déformé dans un récipient de sorte que le câble non étiré présente une teneur en eau comprise entre 0,5 et 12 % en poids et que l'environnement enveloppant le câble non étiré présente une température égale ou inférieure à 35 ·C, puis à soumettre le câble à une étape d'étirage.

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