The blade according to claim 1 wherein the at least one part of the at least one spar bar which is housed in said shell is surrounded by a film of polyetherimide resin.

• 刀片根据权利要求1 ，其中至少有一部份的至少有一石酒吧是住在说，壳牌是包围电影聚醚酰亚胺树脂。