| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a high accuracy hollow molding in a short time. SOLUTION: A mold 2 which is placed in a hollow molding material 1, a pressure reducing apparatus 6 for reducing pressure in the material 1, a heating apparatus 14 for heating a part of the material 1 which is received in the mold (near the middle of the material 1), a pressure container 3 which at least received the part received in the mold, and a pressurizing apparatus 7 which increases the pressure in the container 3 are provided. Since the pressure difference between the inside and outside of the material 1 can be set up to be greater than the atmospheric pressure by actuating both the apparatus 6 and the apparatus 7, the material 1 can be adhered to the mold 2 without repeating heating and molding even at a low molding temperature slightly exceeding the softening point of the material 1. |
