POROUS SHEET PRODUCTION METHOD AND A POROUS SHEET PRODUCED THEREBY

摘要

The present invention provides a porous sheet production method comprising the steps of: a) producing a polymer resin sheet comprising a supercritical extraction target substance which dissolves in a supercritical fluid; and b) forming pores in the polymer resin sheet by pouring a supercritical fluid into the polymer resin sheet and thereby extracting the supercritical extraction target substance comprised in the polymer resin sheet. The present invention also provides a porous sheet produced by means of the method.