Method of molding a reinforced article

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 33/10 (2006.01) B29C 45/00 (2006.01) B29C 45/46 (2006.01) B29C 70/14 (2006.01) B29C 70/28 (2006.01) B29C 70/62 (2006.01) B29C 70/88 (2006.01)

Patent

CA 2402795

A method of molding a reinforced article (100) for optimizing heat transfer, electrical conductivity and/or structural integrity is provided. A mold assembly is first provided which is capable of forming an article (100) of a desired configuration, which may include a base (112) and upstanding fins (114). The desired positioning of the filler within the molded article (100) is determined according to the thermal, electrical or structural needs of the article (100). An input gate (116) and output gate vent (118) is formed in the mold assembly to insure positioning of the filler as desired. Polymer, loaded with reinforced filler, is introduced into the mold assembly via the input gate (116). Polymer is positioned in the mold assembly with the reinforcing filler being substantially parallel and aligned with the flow path. A bottom surface (120) of base (112) is provided with flush thermal communication with a heat generating device which may be positioned in the area designated (122).

L'invention concerne un procédé de moulage d'article (100) renforcé destiné à optimiser le transfert de chaleur, la conductivité électrique et/ou l'intégrité structurale. Un ensemble moule (300) capable de former un article (100) de configuration voulue peut comprendre une base (112) et des lamelles (145) verticales. Le positionnement voulu de la charge dans l'article (100) moulé est déterminé en fonction des besoins thermiques, électriques ou structuraux de l'article (100). Un orifice d'entrée (116) et un évent (118) de sortie sont formés dans l'ensemble moule (300) pour assurer un positionnement voulu de la charge. Un polymère chargé de charge renforçante est introduit dans l'ensemble moule (300) par l'orifice d'entrée (116). Le polymère est positionné dans l'ensemble moule (300), la charge renforçante étant sensiblement parallèle au trajet d'écoulement et alignée sur celui-ci. L'article (100) est finalement éjecté de l'ensemble moule (300). Une surface inférieure (120) de la base (112) est en contact thermique et affleuré avec un dispositif chauffant qui peut être placé dans la zone désignée (122).

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