Method and molding tool for producing structural parts made...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 70/54 (2006.01) B29C 33/06 (2006.01) B29C 35/08 (2006.01) H05B 6/80 (2006.01)

Patent

CA 2734618

Disclosed is a method for producing a part (1) comprising at least one layer (2) of fiber-reinforced composite mate-rial (4). Said method encompasses at least the following steps: a) the at least one layer (2) of polymerizable fiber-reinforced com-posite material (4) is arranged in a shape (5) that has a base (6) and a plurality of elevations (7); b) at least one mold (8) is placed so as to be in contact with at least one elevation (7), said mold (8) having a microwave-sensitive material (10) at least on one con-tact surface (9) towards the at least one elevation (8); c) the at least one elevation (7) is polymerized by irradiating the at least one mold (8) with microwaves (3). The mold used particularly has a stable three- dimensional shape (11). Said mold (8) has a contact surface (9) for the part (1), and at least the contact surface (9) is made of microwave-sensitive material (10).

L'invention concerne un procédé de fabrication d'une pièce (1) comportant au moins une couche (2) à matériau composite (4) renforcé par des fibres, lequel procédé comprend au moins les étapes suivantes : a) mise en forme de ladite au moins une couche (2) en matériau composite (4) polymérisable renforcé par des fibres, la forme (5) obtenue présentant une surface de base (6) et une pluralité de saillies (7); b) mise en contact d'au moins un outil de formage (8) avec au moins une saillie (7), au moins une surface de contact (9) de l'outil de formage (8) qui se trouve en vis-à-vis de ladite au moins une saillie (7) étant constituée d'un matériau (10) sensible aux micro-ondes; c) polymérisation de ladite au moins une saillie (7) par exposition dudit au moins un outil de formage (8) à des micro-ondes (3). L'outil de formage utilisé est en particulier un outil de formage présentant une forme tridimensionnelle (11) stable, l'outil de formage (8) comportant une surface de contact (9) pour la pièce (1) et au moins la surface de contact (9) étant constituée d'un matériau (10) sensible aux micro-ondes.

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