Method for producing composite parts by multicomponent...

B - Operations – Transporting – 29 – C

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Details

B29C 45/16 (2006.01) B29C 45/14 (2006.01) B62D 25/08 (2006.01) B62D 29/04 (2006.01)

Patent

CA 2437805

The invention relates to a method for producing composite parts that consist of at least one base body (1) and at least one first thermoplastic element (4; 5; 6) and one second thermoplastic element (2; 3) which are interlinked with the base body (1) by injection molding. The parts (2; 3) and (4; 5; 6) consist of different plastic materials. The composite parts are produced by inserting the base body (1) into a multicomponent injection molding tool that comprises at least two separate melt line systems and at least two cavities for the first part (2; 3) and the second part (4; 5; 6). The different plastic materials are simultaneously injected into the cavities, said cavities being kept separate from each other during injection molding by the contour of the base body (1) and by special sealing edges of the injection molding tool that contact the contour of the base body (1).

La présente invention concerne un procédé de réalisation de pièces composites comprenant au moins un corps de base (1) et au moins une première partie en matière thermoplastique (4; 5; 6) et une seconde partie en matière thermoplastique (2; 3) qui sont reliées au corps de base (1) par moulage par injection. Selon l'invention, les parties (2; 3) et (4; 5; 6) sont constituées de matières plastiques différentes. Pour leur réalisation, le corps de base (1) est disposé dans un outil de moulage par injection à composantes multiples comprenant au moins deux systèmes séparés de guidage de masse en fusion et au moins deux cavités destinées à la première (2; 3) et à la seconde partie (4; 5; 6), et les matières plastiques différentes sont ensuite injectées simultanément dans les cavités, les cavités étant séparées, lors du moulage par injection, par le contour du corps de base (1) et par des arêtes d'étanchéité spéciales de l'outil de moulage par injection, lesdites arêtes venant en contact avec le contour du corps de base (1).

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