Patent ID: 8992819
Filing Date: 2015-03-31
Classification: B29C,B29L,F03D,F05B,Y02E,Y02P

Abstract:
1. A method for making a wind turbine rotor blade part with a prefabricated main spar cap, the method comprising the steps of: providing a mold having a blade root end and a blade-tip end; inserting at least one outer root reinforcement layer made of a fibrous material into the mold; arranging the prefabricated main spar cap on the at least one outer root reinforcement layer; arranging, in the mold, at least one inner root reinforcement layer made of a fibrous material on the main spar cap; closing the mold; extracting air from the mold through at least one extraction channel arranged at a lateral distance from the main spar cap; feeding a liquid plastics material through a first sprue channel which has a plurality of outlet openings below the main spar cap; and, feeding a liquid plastics material through a second sprue channel which has a plurality of outlet openings above the main spar cap.