| 摘要 |
PURPOSE:To simplify the manufacturing operation of a hollow FRP molding and to enhance the quality of the molding. CONSTITUTION:In the preparation of a hollow FRP molding by injecting a resin in a mold filled with a preform fiber base material, a through-hole is provided to the wall part of the fiber base material forming a hollow part and a mold 14 provided with the air introducing hole 9 communicating with the through-hole is used to send compressed air into the hollow part of the fiber base material through the piercing hole of the fiber base material and the air introducing hole 9 of the mold 14 after the injection of the resin. |
