Novel intermediate material intended to limit the...

B - Operations – Transporting – 29 – B

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B29B 11/16 (2006.01) B32B 5/26 (2006.01) D04B 21/20 (2006.01) D05B 1/06 (2006.01) D04H 3/10 (2006.01)

Patent

CA 2743014

The invention relates to an intermediate product intended for the production of a composite part in combination with a resin matrix, formed by at least two unidirectional sets of reinforcing yarns, the yarns of each set extending in a different direction, whereby the sets are interlinked by means of stitching or knitting using at least one stitching or knitting yarn. The invention is characterised in that the stitching or knitting yarn has a yarn count of less than or equal to 30 dTex, preferably less than or equal to 25 dTex, in accordance with standard EN ISO 2060.

La présente invention concerne notamment un produit intermédiaire, destiné à la réalisation de pièce composite par association avec une matrice de résine, constitué d'au moins deux nappes unidirectionnelles de fils de renfort, les fils de chacune des deux nappes s'étendant dans une direction différente, dans lequel les nappes sont liées entre elles, par couture ou tricotage au moyen d'au moins un fil de couture ou tricotage, caractérisé en ce que ledit fil de couture ou tricotage présente un titre, déterminé selon la norme EN ISO 2060, inférieur ou égal à 30dTex, préférentiellement inférieur ou égal à 25dTex.

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