Pultrusion process for manufacturing a fibre reinforced composite article for a wind turbine blade

Abstract

The present invention relates to a pultrusion process for manufacturing a fibre reinforced composite article (64). The process comprises the steps of impregnating a fibre material, such as fibre rovings or fibre tows, with a resin to form a resin-impregnated pultrusion string (109), pulling the resin-impregnated pultrusion string through a die (107) and applying heat to the resin-impregnated pultrusion string (109) to form an at least partially cured pultrusion string. A surface (115, 116) of the at least partially cured pultrusion string is treated with a primer composition comprising a silane compound to form a primer-treated pultrusion string, and the primer-treated pultrusion string is cut to provide the pultruded composite article (64).

Dependencies are inferred from the claim text.