Method for manufacturing fibre-reinforced material

B - Operations – Transporting – 05 – D

Patent

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117/183, 32/36

B05D 7/24 (2006.01) B29B 15/12 (2006.01) B29C 70/50 (2006.01)

Patent

CA 2016369

A method is disclosed for impregnating fibre bundles with molten or liquid resin in manufacturing a fibre-reinforced material, which material comprises fibre bundle or bundled groups of fibres, wherein each fibre is surrounded by matrix resin, by impregnating a continuous web of one or more fibre bundles with molten or liquid resin and solidifying said resin by cooling or chemical reaction. Before said impregnation the molten or liquid resin material is made subject to shear forces by bringing it to flow between two closely nearby surfaces which are in moving relationship into each other.

La présente invention a pour objet une méthode pour imprégner des faisceaux de fibres de résine en fusion ou liquide dans la fabrication d'un matériau renforcé de fibres, le matériau en question étant constitué de faisceaux de fibres ou de fibres groupées, dans lesquels chacune des fibres est enveloppée d'une matrice de résine obtenue par imprégnation d'une bande continue constituée d'un ou de plusieurs faisceaux de fibres de résine en fusion ou liquide, opération suivie de la solidification de la résine en question par refroidissement ou par réaction chimique. Avant l'opération d'imprégnation, la résine en fusion ou liquide est exposée à des forces de cisaillement par circulation de la résine entre deux surfaces adjacentes animées d'un mouvement l'une par rapport à l'autre.

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