Method of manufacturing wind turbine blade and prepreg sheet therefor

The present invention relates to a pre-impregnated fibrous sheet (20a, 20b) extending in a longitudinal direction and a transverse direction and comprising a first fibrous layer (21) forming part of an upper surface of the pre-impregnated fibrous sheet and a second fibrous layer (22) forming part of a lower surface of the pre-impregnated fibrous sheet wherein the first fibrous layer is pre-impregnated with a tackifier. The invention further relates to a method of manufacturing a blade shell component or a wind turbine blade comprising a pre-fabricated spar cap (100) and a plurality of pre-impregnated fibrous sheets (20a, 20b) arranged to obtain improved adhesion between the blade shell (80) and the pre-fabricated spar cap, in particular when the prefabricated spar cap is impregnated with vinyl ester or epoxy resin and the blade mold is infused with polyester resin. 本发明涉及预浸渍纤维片(20a，20b)，其在纵向方向和横向方向上延伸，并包含形成该预浸渍纤维片的上表面的部分的第一纤维层(21)和形成该预浸渍纤维片的下表面的部分的第二纤维层(22)，其中该第一纤维层用增粘剂进行预浸渍。本发明进一步涉及制造叶片壳体构件或风力涡轮机叶片的方法，所述叶片壳体构