| 摘要 |
<p>A fluororesin tube 30 of the present invention has a tensile strength of 80 N/mm 2 or more in both of the circumferential direction and the axial direction. The fluororesin tube 30 is produced by winding with two or more turn of a fluororesin film 20 having a thickness T of 2.5 µm or less (particularly 2.0 µm or less) to form a lamination. At least an outermost layer of the tube is fused to a layer immediately thereunder and a rising height H of the fluororesin film at the end-of-winding side 21 is always 0.1 µm or more and 2.0 µm or less when measured at any position of the side 21. A level difference D of the end-of-winding side 21 of the fluororesin tube is preferably more than or equal to sum of the film thickness T and 0.1 µm, and less than or equal to 3.0 µm (particularly 2.3 µm) when measured at any position of the side 21.</p> |
