DEFECT INSPECTION SYSTEM AND DEFECT INSPECTION METHOD FOR POROUS HOLLOW FIBER MEMBRANES, POROUS HOLLOW FIBER MEMBRANE, AND METHOD FOR PRODUCING POROUS HOLLOW FIBER MEMBRANE

摘要

The present invention provides a defect inspection apparatus and a defect inspection method that allows easy and efficient inspection of a defect of a porous hollow fiber membrane. The defect inspection apparatus for a porous hollow fiber membrane of the present invention includes: a container storing a fluid; a passage member that is configured such that a hollow fiber membrane travel passage, which allows the porous hollow fiber membrane to pass therethrough continuously, is formed thereinside and the passage member being disposed in the fluid to thereby fill the passage with the fluid; a restriction means that restricts travel of the porous hollow fiber membrane such that the porous hollow fiber membrane passes through the fluid in the hollow fiber membrane travel passage of the passage member; a fluid suction means that flows the fluid in the hollow fiber membrane travel passage to thereby lower the pressure of the fluid in the hollow fiber membrane travel passage; and an air bubble detection means that detects an air bubble that is released into the fluid from a defect of the porous hollow fiber membrane. A defect inspection method for a porous hollow fiber membrane using the abovementioned defect inspection apparatus.