Patent ID: 11873791

Abstract:
A material core (100) for wind turbine blade, comprising: a core body (101); a first groove (102) extending from a first side (104) of the core body (101), in a first direction (106), into a depth d1 in the core body (101); and a second groove (103) extending from a second side (105) of the core body (101) facing away from the first side (104), in a direction opposite to the first direction (106), into a depth d2 in the core body (101), wherein the second groove (103) is parallel to the first groove (102), and wherein: d2=t−d1+x, 1 mm≤x<d1, wherein t is a thickness of the core body (101), and wherein a distance between the first and second grooves is o, wherein: 1 mm≤o≤5 mm.