| 摘要 |
<p>PROBLEM TO BE SOLVED: To execute formation with ease in a simple process, improve the manufacturing yield, and decrease the manufacturing cost by conducting formation in the interior surface of a cylindrical body even in heat-compressed air. SOLUTION: A cylindrical body 4 provided with a disk-like flange portion 5 at its lower end and a gas escaping hole 7 on its exterior face is vertically installed in a chamber 3, and then a cylindrical body 8 is fittingly placed in the cylindrical body 4. A lid member 9 is mounted on the upper end face of both the cylindrical body 4 and cylindrical body 8. Subsequently, heat-compressed air is introduced into the chamber 3 and, while softening the cylindrical body 8 by the agency of air, the interior surface of the cylindrical body 8 is put close contact with the exterior peripheral face of the cylindrical body 4.</p> |
