Method of construction of moulded products

Details Method of construction of moulded products Method of construction of moulded products

B - Operations, Transporting

29

C

B29C 70/46 (2006.01) A61F 2/60 (2006.01) B29C 70/20 (2006.01) B29C 70/22 (2006.01) B32B 5/12 (2006.01)

Patent

CA 2530990

A method of construction of a moulded product which includes the steps of impregnating non-metallic fibres in epoxy resin whereby said impregnated fibres may be arranged to form a sheet of said fibres; cutting a plurality of pre-pregs from said sheet; forming successive layers of said pre-pregs so that said layers are arranged in stacked relationship (preferably formed of pre- pregs having fibres arranged in an intersecting orientation which alternate with pre-pregs having fibres arranged in a longitudinal and/or latitudinal orientation) in a mould cavity of a compression mould; compression moulding at elevated temperature; and removing the moulded product from the compression mould. There is also provided a moulded product per se as well as a moulded product formed by the method of construction. The moulded product is preferably a prosthetic device including a J-shaped pylon (11) and sole plate (23).

L'invention concerne un procédé de production d'un produit moulé consistant à imprégner des fibres non métalliques en résine époxy, ces fibres imprégnées pouvant être agencées afin de former une feuille de fibres; à couper une pluralité de préimprégnés à partir de ladite feuille; à former des couches successives de pré-imprégnés de sorte que ces couches sont empilées (de préférence formées de préimprégnés comprenant des fibres agencées selon un sens d'intersection alternant avec des préimprégnés comprenant des fibres agencées selon un sens longitudinal et/ou transversal ) dans une cavité de moule de compression; à comprimer le moulage à une température élevée; et à retirer le produit moulé du moule de compression. L'invention concerne également un produit moulé per se ainsi qu'un produit moulé formé au moyen du procédé de production. Le produit moulé est, de préférence, un dispositif prosthétique comprenant une prothèse verticale en forme de J (11) et une plaque de semelle (23).

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