Method of recycling bonded fibrous materials and synthetic...

D - Textiles – Paper – 21 – B

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D21B 1/32 (2006.01)

Patent

CA 2426014

A method of recycling bonded fibrous materials, the method includes the steps of: providing pieces of bonded fibrous materials, the pieces having sizes that are adapted for suspension in a liquid; suspending the discrete pieces of bonded fibrous materials in a liquid; applying mechanical work to the liquid suspension of discrete pieces to generate hydraulic pressure and mechanical shear stress conditions sufficient to hydraulically fragment the bonded fibrous materials into fibers and fiber-like components; and separating substantially individual fibers and fiber-like components from the liquid. The method is used to produce recycled synthetic fibers and fiber-like materials that have at least one thread element composed of synthetic material having at least one irregular distorsion generated by hydraulic fracture of the thread element to separate it from a bonded fibrous material while the bonded fibrous material is suspended in a liquid.

L'invention concerne un procédé de recyclage de matières fibreuses non tissées consistant : à fournir des pièces de matières fibreuses non tissées d'une taille telle que lesdites pièces sont aptes à être suspendues dans un liquide ; à suspendre les pièces discrètes de matières fibreuses non tissées dans un liquide ; à exercer un travail mécanique sur les pièces discrètes suspendues dans le liquide afin de générer une pression hydraulique et des états de force de cisaillement mécaniques suffisants pour fragmenter, par voie hydraulique, les matières fibreuses non tissées en fibres et en composés fibreux ; et à séparer sensiblement ces fibres et les composés fibreux du liquide. Ce procédé est utilisé afin d'obtenir des fibres synthétiques et des matériaux fibreux recyclés comprenant au moins un fil composé de matière synthétique comportant au moins une déformation irrégulière générée par une fragmentation hydraulique du fil pour le séparer d'une matière fibreuse non tissée pendant que cette dernière est suspendue dans un liquide.

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