| 摘要 |
<p>A production method for a double-structure container having a clearance between an inner tube and an outer tube thereof, wherein, in order to facilitate production thereof and reduce production costs, an inner tube (4A) is disposed inside an outer tube (4B) with a clearance (4C) therebetween, solid inclusion (4D) is held in at least one tube-axis-direction segment in the clearance (4C), and the outer tube (4B) is subjected to spinning in that condition to concurrently change the sections of the inner and outer tubes (4A, 4B).</p> |
