C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 5/06 (2006.01) B65H 57/16 (2006.01) D01D 11/02 (2006.01) D01F 11/14 (2006.01) D06M 15/233 (2006.01) D06M 15/31 (2006.01) D06M 15/356 (2006.01) D06M 15/41 (2006.01) D06M 15/423 (2006.01)
Patent
CA 2432532
A method for the production of a multifilament carbon fibre-based longitudinal reinforcing element, designed to be incorporated in a rubber-based item. Said method comprises the following steps, whereby untwisted carbon fibres are plunged into an impregnating bath containing a solution of resorcinol-formaldehyde resin and rubber latex, the impregnated fibres are then dried and the dried fibres are subsequently twisted. The inventive method is characterised by the fact that it also comprises a step, during the impregnation step, consisting in opening out the carbon fibres by spreading out the constituent filaments thereof in such a way that each fibre has an increased surface area on which the impregnation can be performed.
Procédé de fabrication d'un élément de renfort longitudinal à base de fibre de carbone multifilamentaire, destiné à être incorporé dans un article à base de caoutchouc, incluant les étapes suivantes, consistant, à partir de fibres de carbone sans torsion : à plonger les fibres dans un bain d'imprégnation contenant une solution de résine de résorcinol-formaldéhyde et de latex de caoutchouc ; à sécher les fibres imprégnées ; à retordre les fibres séchées,caractérisé en ce qu'il comporte également une étape consistant à assurer, pendant l'étape d'imprégnation, une ouverture des fibres de carbone par l'étalement des filaments les constituant, de sorte que chaque fibre présente une surface accrue sur laquelle peut s'effectuer l'imprégnation.
Brouillette & Associes/partners
Sovoutri Societe Voultaine de Transformes Industriels
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