| 摘要 |
PROBLEM TO BE SOLVED: To change the film thickness of a pressure bag in a planning stage by technical effect capable of forming an inflection point according to a planning value to a tubular member without making the inflection point difficult to form and forming the rough surface to the inflection point forming part by an air stagnation. SOLUTION: In a pressure bag 3 for internal pressure molding, the film thickness of the inflection part 8 corresponding to the inflection point after molding and curing of a thermosetting resin sheet 4 wound around an outer periphery is formed so as to become less than the circumferential film thickness. |
