Improved nozzle tip for high melt pressure applications

Details Improved nozzle tip for high melt pressure applications Improved nozzle tip for high melt pressure applications

B - Operations, Transporting

29

C

B29C 45/20 (2006.01)

Patent

CA 2680767

An improved nozzle for high melt pressure applications includes an inner body portion having a melt channel, the inner body portion having an inlet face and a melt outlet; an outer body portion having a seal face, with the outer body portion inducing a compressive force on the inner body portion at least during operation of the nozzle; the plane of the inlet face of the inner body portion intersecting the outer body portion, resulting in no part of the inner body portion extending beyond the seal face of the outer body portion; and the inner and outer body portions having different relative thermal conduction and expansion coefficients.

L'invention concerne une buse améliorée destinée à des applications sous pression de fusion élevée, laquelle inclut une partie de corps interne comportant un canal de fusion, la partie de corps interne possédant une face d'orifices d'entrée et un orifice de sortie pour la fusion ; une partie de corps externe possédant une face d'étanchéité, la partie de corps externe induisant une force de compression sur la partie de corps interne au moins pendant le fonctionnement de la buse ; le plan de la face d'orifice d'entrée de la partie de corps interne coupant la partie de corps externe, ce qui résulte en ce qu'aucune pièce de la partie de corps interne ne s'étend au delà de la face d'étanchéité de la partie de corps externe ; et enfin des parties de corps interne et externe présentant une conduction thermique relative et des coefficients de dilatation différents.

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