Blade and wind power generation equipment

The utility model discloses a protective film, a blade and wind power generation equipment, the protective film comprises a base material and a bonding layer, the widths of a base section, a transition section and an end section of the base material in the length direction of the base material are sequentially reduced, particularly, the width of the transition section is gradually reduced, and the transition section and the end section are arranged in the tip area of the blade. The gradually narrowing design of the base material can effectively reduce bubbles and wrinkles between the protective film and the blade when the protective film is pasted. And the adhesion between the blade and the protective film is better. In addition, due to the arrangement of the protective film, the strength of the blade can be improved, especially the strength of the front edge area of the blade tip. 本申请公开了一种保护膜、叶片及风力发电设备，保护膜包括基材以及粘接层，基材沿其长度方向的基础区段、过渡区段以及端部区段的宽度依次减小，特别是过渡区段的宽度是逐渐变小的，过渡区段和端部区段设置在叶片的尖端区域，上述基材的渐窄设计可有效减少保护膜粘贴时与叶片之间