Method and system for preparing densified lignocellulosic...

B - Operations – Transporting – 27 – N

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B27N 1/00 (2006.01) B02C 7/00 (2006.01) B02C 13/00 (2006.01) C08J 5/06 (2006.01) D21B 1/04 (2006.01) C08H 8/00 (2010.01) C08L 97/02 (2006.01)

Patent

CA 2712415

A method of preparing lignocellulosic fibre aggregates from a densified mass of lignocellulosic fibre, such as densified bales, for use in manufacturing high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites, or articles made of the high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites is provided. The method includes: (a) feeding densified forms of lignocellulosic fibre into a size reduction device; and size reducing the lignocellulosic fibres so as to produce dense lignocellulosic fibre aggregates having an average size profile suitable for use in manufacturing high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites, or articles made of the high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites. The density of the lignocellulosic fibre is generally maintained throughout the method. A system for preparing lignocellulosic fibre in accordance with the method is also provided.

La présente invention concerne un procédé de préparation d'agrégats de fibres lignocellulosiques à partir d'une masse densifiée de fibres lignocellulosiques telle que des balles densifiées, agrégats destinés à la fabrication de composites thermoplastiques contenant des fibres lignocellulosiques à haute performance, recyclables et moulables, ou d'articles réalisés à partir de ces composés. Le procédé consiste notamment à (a) introduire des formes densifiées de fibres lignocellulosiques dans un dispositif de fragmentation et fragmenter les fibres de manière à obtenir des agrégats denses de fibres lignocellulosiques ayant un profil de taille moyenne convenant pour une utilisation dans la fabrication de composites thermoplastiques qui contiennent des fibres lignocellulosiques à haute performance, recyclables et moulables, ou d'articles réalisés à partir de ces composés. La densité des fibres lignocellulosiques est généralement maintenue pendant tout le procédé. L'invention concerne également un système permettant de préparer des fibres lignocellulosiques par le procédé décrit.

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