| 摘要 |
PURPOSE:To omit the removal operation of an squeezed out urethane layer, and to improve productivity and profitability by preventing the generation of the squeezed at urethane layer. CONSTITUTION:In an expansion molding die composed of a foaming core die 12 and a foaming cavity die 11, a sealing member 17 with a through-hole formed to a core material 14 set to the foaming core mold and a projection 19 elastically joined with the side edge of an end section 18 is installed to the mold surface of the foaming core mold. The generation of an extruded urethane layer due to the flowing-in of urethane into a clearance between the core material 14 and the mold surface of the core mold is prevented by the sealing member 17. |
