COMPOSITE HOLLOW FIBER MEMBRANE AND METHOD FOR MANUFACTURING SAME

• Main Authors: LEE, AH REUM, MOON, HEEWAN, LEE, JAE HUN, SHIN, YONGOL
• Format: Patent
• Language: English; French; Korean
• Published: 09.07.2015
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

Disclosed are a composite hollow fiber membrane, which has improved water permeability and peeling-off strength, and a method for manufacturing the same. The composite hollow fiber membrane according to the present invention comprises: a tube-shaped polymer membrane having an outer surface and an inner surface; and a tube-shaped knitted fabric arranged between the outer surface and the inner surface of the polymer membrane, wherein the tube-shaped knitted fabric is manufactured using a plurality of raw yarns, each of the raw yarns comprises a first multifilament and a second multifilament, the first multifilament comprises multiple first monofilaments each having a fineness of 3 to 50 deniers, and the second multifilament comprises multiple second monofilaments each having a fineness of more than 0.4 and less than 3 deniers. L'invention concerne une membrane à fibre creuse composite, qui a une perméabilité à l'eau et une résistance au décollement améliorées, et son procédé de fabrication. La membrane à fibre creuse composite selon la présente invention comprend: une membrane polymère en forme de tube ayant une surface externe et une surface interne; et un tissu tricoté en forme de tube disposé entre la surface externe et la surface interne de la membrane polymère, le tissu tricoté en forme de tube étant fabriqué en utilisant une pluralité de fils bruts, chacun des fils bruts comprenant un premier multifilament et un second multifilament, le premier multifilament comprenant de multiples premiers monofilaments ayant chacun une finesse de 3 à 50 deniers, et le second multifilament comprenant de multiples seconds monofilaments ayant chacun une finesse de plus de 0,4 et de moins de 3 deniers. 향상된 수투과도 및 박리강도를 갖는 복합 중공사막 및 그 제조방법이 개시된다. 본 발명의 복합 중공사막은 외표면 및 내표면을 갖는 튜브형 고분자막, 및 상기 고분자막의 외표면 및 내표면 사이에 배치된 튜브형 편물을 포함하되, 상기 튜브형 편물은 복수의 원사들로 제조되고, 상기 원사들 각각은 제1 멀티필라멘트 및 제2 멀티필라멘트를 포함하고, 상기 제1 멀티필라멘트는 3 내지 50 데니어의 섬도를 각각 갖는 다수의 제1 모노필라멘트들을 포함하며, 상기 제2 멀티필라멘트는 0.4 초과 3 미만의 데니어의 섬도를 각각 갖는 다수의 제2 모노필라멘트들을 포함한다.