B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 70/44 (2006.01) B29C 33/30 (2006.01) B29C 33/52 (2006.01) B29C 43/52 (2006.01) B29C 70/34 (2006.01) B29C 33/38 (2006.01) B29C 33/40 (2006.01) B29C 33/44 (2006.01)
Patent
CA 2254091
The invention concerns a method for making hollow parts (1) in composite laminated hot-polymerised material (6), said parts (1) comprising curving walls (3, 3a, 3b, 3c) enclosing and forming recesses (2), and optionally non-curving walls (30), i.e. not forming recesses. The method is characterised in that it consists in using mould cores (11) coated (13) with silicon elastomer of sufficient thickness, the thermal expansion of the silicon elastomer coating (13) ensuring the compression of the composite material (6) against the mould (7) walls (10).
L'invention propose un procédé de fabrication de pièces creuses (1) en matériau composite stratifié polymérisé à chaud (6), lesdites pièces (1) comportant des parois enveloppantes (3, 3a, 3b, 3c) entourant et formant des cavités (2), et éventuellement des parois non enveloppantes (30), c'est à dire ne formant pas de cavités. Un tel procédé est remarquable en ce qu'on utilise des noyaux (11) recouverts d'une couche (13) d'élastomère silicone d'épaisseur (e) suffisante, la dilatation thermique de la couche (13) d'élastomère silicone assurant la compression de la matière composite (6) contre les parois (10) du moule (7).
Aircelle
Goudreau Gage Dubuc
Hispano Suiza Aerostructures
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