Advanced engineering resin and wood fiber composite

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 5/04 (2006.01) B29B 9/14 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2242326

The invention relates to a composition comprising an engineering resin and wood fiber composite that can be used in the form of a linear extrudate or thermoplastic pellet to manufacture structural members. The resin/wood fiber composite structural members can be manufactured in an extrusion process or an injection molding process. The linear extrudate or pellet can have a cross section of any arbitrary shape, or can be a regular geometric shape. The pellet can have a volume of at least about 12 mm3. Preferably the pellet is a right cylindrical pellet having a minimum radius of about 1.5 mm and a minimum length of 1 mm weighing at least 14 mg. The invention also relates to the environmentally sensitive recycle of waste streams. The resin/wood fiber composite can contain an intentional recycle of a waste stream comprising polymer flakes or particles or wood fiber. The waste stream can comprise, in addition to resin, other thermoplastics fibers, adhesive, paint, preservative, or other chemical stream common in the wood- window or door manufacturing process, or mixtures thereof.

L'invention porte sur une composition comprenant un composite de résine industrielle et de fibres de bois utilisable sous forme d'extrudats linéaires ou de pastilles thermoplastiques obtenus par extrusion ou moulage par injection pour la fabrication d'éléments structurels. Les extrudats linéaires ou les pastilles peuvent présenter tout type de section y compris des sections géométriques régulières. Les pastilles, d'un volume minimal de 12 mm<3>, se présentent de préférence sous la forme d'un cylindre droit d'un rayon minimal d'environ 1,5 mm, d'une longueur minimale de 1 mm, et d'un poids minimal de 14 mg. L'invention porte également sur le recyclage sensible à l'environnement courants de déchets contenant des flocons ou particules de polymères ou des fibres de bois. Lesdits déchets peuvent comprendre en plus des résines, d'autres matières thermoplastiques, des fibres des adhésifs, des peintures, des agents préservateurs, et d'autres produits chimiques intervenant normalement dans les processus de fabrication des portes et fenêtres de bois, ou leur mélange.

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