| 摘要 |
PROBLEM TO BE SOLVED: To prevent development of crack and corrosion of a metal core material even when the metal core material is employed, by a method wherein a foam molding is performed by pouring a phenolic resin compound liquid after a core material, the surface of which is covered with a buffering sheet, is installed in a mold so as to integrally mold the core material and a phenolic resin foam. SOLUTION: The surface of a core material 1 made of wood, metal or the like is covered with a buffering sheet 2. In succession, after the core material 1 covered with the buffering sheet 2 is arranged at the central part of a mold 5, a foam molding is carried out by pouring a phenolic resin compounding liquid in the mold. A preferable mold temperature is 30-100 deg.C and a preferable hardening time is 5-60min. The mold 5 has a space 9, within which a silicone rubber mold 8 is housed. Further, the mold 5 consists of two openable and closable mold members 7a and 7b for arranging and removing the silicone rubber mold 8 and a bung hole, through which the phenolic resin compounding liquid is poured. The silicone rubber mold 8 is a tubular body having a handle-like cut-opened part 10 bisected along a longitudinal split line for unloading a molded body. |
