POROUS POLYVINYLIDENE FLUORIDE RESIN FILM AND PROCESS FOR PRODUCING THE SAME

摘要

A porous hollow fiber polyvinylidene fluoride resin membrane, characterized in that the membrane has a unitary three-dimensional network structure entirely composed of a polyvinylidene fluoride resin and has an inside diameter of 1.5 - 5 mm and a wall thickness of 0.5 - 2 mm and in that the relationship between membrane bubble point and water flux per unit wall thickness is on or above the curve shown in FIG. 1.