A method for manufacturing an elongated composite material object, such as a wind turbine blade spar

摘要

A method for manufacturing an elongated composite material object, such as a part for a wind turbine blade, for example a wind turbine blade spar, having the following steps: providing a first strip including a resin; providing a second strip including a fibrous material, but not including any resin; providing an elongated tool, such as a mandrel; winding the first and second strips around the tool simultaneously, and finally; allowing at least a part of the resin provided by the first strip, to impregnate the fibrous material of the second strip, thus forming the elongated composite material object. The first strip may also have fibrous material in addition to the resin, and the quantity of resin may be sufficient to fully impregnate the fibrous material in both the first and second strips. The step of winding may involve providing each strip 11, 21 on a separate roll 1, 2 rotatably mounted on a carrier 4 and rotating the carrier around the tool 3 in direction A while sliding it along in direction B.