Force-introduction point in core composites and method for...

B - Operations – Transporting – 29 – C

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B29C 70/86 (2006.01) B29C 70/08 (2006.01) B29C 70/24 (2006.01)

Patent

CA 2537651

The invention relates to the configuration and production of force- introduction points in core composites using reinforcement elements that traverse the thickness of said core composite. The reinforcement elements that traverse the thickness of the core composite are provided in the vicinity of the force-introduction points. The reinforcement elements (e.g. stitched fibres) are preferably incorporated by means of a stitching process and a stitching needle. After the stitching process, the cover layers (a and c), which preferably consist of textile semi-finished products and the hole produced by the passage of the needle, together with the reinforcement element are impregnated with a liquid polymer matrix, creating the material union of the core material and the cover layers.

L'invention concerne la configuration et la réalisation de zones d'induction de forces dans des panneaux sandwich, ces zones étant obtenues au moyen d'éléments d'armature qui traversent le panneau sandwich dans le sens de l'épaisseur. La région où se trouve une telle zone d'induction de forces, dans le panneau sandwich, est pourvue d'éléments d'armature qui traversent ledit panneau dans le sens de l'épaisseur. L'incorporation d'éléments d'armature (par exemple de fils de couture) peut se faire, de préférence, selon une technique de couture et à l'aide d'une aiguille de couture. Après le processus de couture, les couches de couverture (a et c) qui sont constituées, de préférence, de demi-produits textiles, ainsi que la paroi du trou de passage, y compris les éléments d'armature, sont imprégnés d'une matière matricielle polymère liquide, la matière centrale se fixant simultanément, par liaison de matière, aux couches de couverture.

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