| 摘要 |
PROBLEM TO BE SOLVED: To provide a spiral pattern membrane element capable of effectively preventing adhesion from deteriorating at sealed sections while maintaining an effective membrane area without extending the coating width of an adhesive and its manufacturing method. SOLUTION: In the spiral pattern element provided with a cylindrical roll R where a separating membrane 1, a feed side channel material 2, and a penetrated side channel material 3 that are spirally wound in a lamination around a central porous pipe 5 and the sealed section that prevents the mixture of a feed side fluid and a penetrated side fluid, the separating membrane 1 that is opposed through the material 3 has both-end sealed sections 11 formed by the adhesive on at least both ends in an axial direction, and the contact surfaces of the membrane 1 positioned at the both-end sealed sections undergo roughening treatment. COPYRIGHT: (C)2006,JPO&NCIPI
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