| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a tube having good mechanical and electric characteristics as a conventional product in which the sagging of a polyamide acid solution by its own weight and the generation of roughness and lifting of the surface of the tube and prevented. SOLUTION: In this method for manufacturing a polyimide tube 11 in which a polyamide acid solution is supplied to the inside surface of a cylindrical mold, a bullet-shaped or spherical traveling body is made to travel along the inside peripheral surface coated with the solution, the polyamide acid is converted into an imide, and a synthetic resin powder is dispersed in the solution to make it thixotropic. |
