| 摘要 |
PROBLEM TO BE SOLVED: To provide a filtering structure having a small number of parts.SOLUTION: In a resin molding 1 provided by expansion-molding, via a mold, a resin material so as to form a void section 30 possessing many voids 30A in the interior thereof and to form, as a surface layer, a skin layer 20, an inflow port 21 for streaming a fluid into the void section 30 and an outflow port 22 for streaming out the fluid having streamed into the void section 30 are formed within the skin layer 20 to that the inflow port 21 and the outflow port 22 communicate with the void section 30. |
