Porous resin film and ink jet recording medium

摘要

A porous resin film which is obtained from a compound prepared by kneading a composition comprising 30 to 100% by weight of a thermoplastic resin comprising a hydrophilic thermoplastic resin and 0 to 70% by weight of an inorganic and/or an organic powder in an intermeshing twin-screw extruder at a screw shear rate of 300 sec−1 or higher and which has a liquid absorbing capacity of 0.5 ml/m2 or more as measured in accordance with the method specified in Japan TAPPI Standard No. 51-87.