Frp tubular body and its method of production

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 70/44 (2006.01) B29B 11/14 (2006.01) B29C 70/34 (2006.01) B29C 70/54 (2006.01) B32B 1/08 (2006.01)

Patent

CA 2363382

A production method for an FRP cylindrical body, characterized by comprising the steps of disposing a resin diffusion medium and a reinforcing fiber base material on the outer or inner periphery of a cylindrical or sold core, covering the medium and the base material with an airtight material before vacuumizing the inside, and injecting resin for diffusion in a surface direction of the medium and for impregnation into the base material; an FRP cylindrical body characterized in that an FRP layer and a resin diffusion medium are integrated with each other concentrically; and an FRP cylindrical body comprising two or more peripherally-split members which are integrally joined; whereby it is possible to produce even long or large-diameter FRP cylindrical bodies easily and at low costs.

L'invention concerne un procédé permettant de produire un corps cylindrique en plastique renforcé de fibre de verre. Ce procédé est caractérisé par les étapes suivantes : on applique un produit de diffusion de résine et un matériau de support à base de fibres de renforcement sur la périphérie externe ou interne d'un noyau cylindrique ou plein, on recouvre le produit et le matériau de support d'un matériau étanche à l'air puis on forme le vide à l'intérieur du matériau et on injecte la résine afin qu'elle se diffuse à la surface du produit de diffusion et imprègne le matériau de support. L'invention concerne également un corps cylindrique en plastique renforcé de fibre de verre comprenant au moins deux éléments présentant des divisions périphériques, assemblés en un seul bloc. Ce procédé permet également de produire de manière aisée et peu coûteuse des corps cylindrique en plastique renforcé de fibre de verre de longueur ou de diamètre importants.

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