Pole and method for its manufacture

Details Pole and method for its manufacture Pole and method for its manufacture

B - Operations, Transporting

32

B

B32B 1/08 (2006.01) B29C 53/42 (2006.01) B29C 70/30 (2006.01) B29C 70/44 (2006.01) E04H 12/02 (2006.01) B29C 53/56 (2006.01)

Patent

CA 2269548

A pole (1), for example a flagpole, is made of a material which is mainly made up of a first component, such as glass, and a second component, such as a polymer. The two components enter into the material as premade composite fibres formed by both components, in the form of a web (2) of rovings. The polymer is a thermoplastic polymer, for example polypropylene, and the pole is made of the composite fibres under heat stress which softens the polymer and thereby joins the composite fibres so that they, after cooling, assume fixed shape. In this way, for example a flagpole which is less expensive than a conventional flagpole of for example glass-fibre reinforced polyester and which, at the same time, has just as good properties, can be manufactured.

Cette invention se rapporte à un poteau (1), par exemple du type mât porte-drapeau, qui est constitué par un matériau fait essentiellement d'un premier composant, par exemple du verre, et d'un second composant, par exemple un polymère. Ces deux composants entrent dans le matériau comme fibres composites préfabriquées formée par deux composants, sous la forme d'une bande (2) de mèches discontinues. Le polymère est un polymère thermoplastique, par exemple du propylène, et ce poteau est fabriqué à partir de ces fibres composites sous contrainte thermique, ce qui ramollit le polymère et amalgame ainsi les fibres composites, pour que celles-ci, après refroidissement, adoptent une forme fixe. On peut fabrique ainsi par exemple un mât porte-drapeau qui est moins coûteux que les mâts porte-drapeau traditionnels par exemple en polymère renforcé par des fibres de verre et qui en même temps possèdent des propriétés aussi bonnes.

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