| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a resin film, in which the resin film of which the particulate density is gradually different in a thickness direction is easily manufactured. <P>SOLUTION: This invention relates to the method of manufacturing resin films, in which a resin film 2 containing particulates 21, of which the density of particulates 21 is gradually different in a thickness direction, is manufactured by a solution casting film forming method, wherein a resin solution for use contains the particulates 21 and transparent resin 22, and a solvent of the resin solution contains a good solvent and a poor solvent for the transparent resin, and the poor solvent content of the solvent is 30 to 80 mass%, and the solvent content of the transparent resin is 300 to 500 mass%, and the particulates are more easily dispersed in the poor solvent than the good solvent. <P>COPYRIGHT: (C)2010,JPO&INPIT |
