SPIRAL MEMBRANE ELEMENT AND END MEMBER FOR SPIRAL MEMBRANE ELEMENT

原文（中国語）

A spiral membrane element includes an element body, an end member, and an exterior material. The end member includes a body portion having a first protrusion, and a skirt portion located between the element body and the exterior material, and satisfies at least one selected from the group consisting of the following requirements (1) to (3): (1) the first protrusion has a cut-in portion and a part of the exterior material is placed into at least a part of the cut-in portion; (2) the skirt portion has at least one of a hole and a through hole, and a part of the exterior material is placed into at least a part of at least one of a hole and a through hole; and (3) the first protrusion has a recess, and a part of the exterior material is placed into at least a part of the recess.