Patent ID: 10159938

Abstract:
A module includes a bonded portion in which the hollow-fiber-membranes are bonded and fixed together by potting material at least in an end portion of each of the hollow-fiber-membranes. Each of the hollow-fiber-membranes has a resin impregnation portion in which resin is impregnated into an outer surface side of each of the hollow-fiber-membranes at least in the end portion where each of the hollow-fiber-membranes is bonded and fixed together. In the end portion of the hollow-fiber-membranes, a leading edge of the resin impregnation portion toward the other end of each of the hollow-fiber-membranes is located closer to the other end than a leading edge of the bonded portion toward the other end. The thickness of the resin impregnation portion in the direction of the wall thickness of the hollow-fiber-membranes is 10 to 70% with respect to the thickness of the hollow-fiber-membranes.