Integrated permeation channel membrane structure

The present invention relates to a filtration membrane envelope (3) comprising a 3D spacer fabric (7) having upper and lower surfaces (9, 10) bound together and spaced apart by monofilament threads (11), said 3D spacer fabric being interposed between two membrane layers and forming a permeation channel (12), the invention relates to a 3D spacer fabric comprising an upper fabric surface and a lower fabric surface, said upper fabric surface and lower fabric surface being respectively cast on said upper fabric surface and lower fabric surface of said 3D spacer fabric, and wherein said upper fabric surface and lower fabric surface are at least partially embedded in said film layer, thereby forming an upper and lower anchoring portion (13, 14), characterized in that said anchoring portion has a minimum thickness of 100 microns. 本发明涉及一种过滤膜封套(3)，该过滤膜封套包括3D间隔织物(7)，该3D间隔织物具有通过单丝线(11)绑在一起且间隔开的上表面和下表面(9，10)，所述3D间隔织物插设在两个膜层之间，并且形成渗透通道(12)，其中，所述膜层分别浇铸在所述3D间隔织物的所述上织物表面和下织物表面上，并且其中，所述上织物表面和下织物表面至少部分地嵌入在所述膜层中，从而形成上锚固部分和下锚固部分