Hollow polymer fibers using rotary process

Details Hollow polymer fibers using rotary process Hollow polymer fibers using rotary process

D - Textiles, Paper

01

D

D01D 5/24 (2006.01) D01D 5/18 (2006.01)

Patent

CA 2239066

In a method for producing hollow polymer fibers (20), molten polymer is supplied to a rotating polymer spinner having a peripheral wall (14). The spinner rotates so that molten polymer is centrifuged through a first tube (24) extending through the peripheral wall of the spinner to form fibers. Gas is introduced into the interior of the molten polymer to form hollow polymer fibers. The hollow polymer fibers are then collected as a product such as a mat. The hollow polymer fibers produced by the method are microfibers having an average outside diameter of from about 2.5 microns to about 62.5 microns.

Dans un procédé permettant de produire des fibres plastiques creuses (20), un polymère fondu est amené à un panier centrifugeur rotatif pour polymère, comportant une paroi périphérique (14). Le panier centrifugeur tourne de façon à faire passer le polymère fondu, par centrifugation, dans un premier conduit (24) traversant la paroi périphérique du panier centrifugeur, afin de former des fibres. On introduit un gaz à l'intérieur du polymère fondu pour former des fibres plastiques creuses. Puis on rassemble celles-ci sous forme d'un produit tel qu'un mat. Les fibres plastiques creuses produites par ce procédé sont des microfibres ayant un diamètre externe moyen compris entre 2,5 et 62,5 microns.

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