B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/183, 32/36
B05D 7/24 (2006.01) B29B 15/12 (2006.01) B29C 70/50 (2006.01)
Patent
CA 2016370
The invention is concerned with a method and an apparatus for impregnating fibre bundles by means of molten or liquid resin in manufacturing a fibre-reinforced material, which material comprises one or more fibre bundles in which each fibre is surrounded by matrix resin, by impregnating a continuous web of one or more fibre bundles with a 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 forcing it to flow through a channel ending at an impregnation point, the channel containing at least one section having decreasing cross-section and/or the channel having a cross-section sufficiently narrow to cause shear forces to impinge on the liquid resin, thus decreasing viscosity therein.
Cette invention concerne une méthode et une installation d'imprégnation de faisceaux de fibres au moyen de résine fondue ou liquide pour la fabrication de matériau renforcé de fibres, ledit matériau étant composé de faisceaux de fibres dont chaque fibre est enrobée complètement de résine. L'imprégnation se fait sur une bande continue fibres formant un ou plusieurs faisceaux. Le refroidissement et la solidification de la matrice de résine se font par voie mécanique ou chimique. Avant l'étape d'imprégnation, la résine fondue ou liquide est soumise à des forces de cisaillement à son expulsion forcée par un passage débouchant sur le point d'imprégnation, ledit passage comportant au moins un étranglement et/ou ayant une section suffisamment petite pour forcer le cisaillement de la résine et, partant, sa fluidification.
Borealis A/s
Marks & Clerk
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