| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonwoven fabric for a semipermeable membrane support which can provide good adhesion of a semipermeable membrane to a support, can make thickness of the semipermeable membrane uniform and does not undergo penetration of a coating solution through the nonwoven fabric.SOLUTION: A nonwoven fabric for a semipermeable membrane support is a nonwoven fabric mainly composed of organic synthetic fibers and has a semipermeable membrane supported on one surface thereof, wherein each of a coating surface of the nonwoven fabric, which is a surface to be coated with the semipermeable membrane, and a non-coating surface of the nonwoven fabric, which is a surface opposed to the coating surface, has a Bekk smoothness degree of 5 seconds or more and internal bond strength of the nonwoven fabric falls within the range from 0.4 to 0.8 N×m as measured in the sheet lateral direction. |
