| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tube having high resistance to fuel permeability and high flexibility. <P>SOLUTION: The tube 11 comprises a barrier layer 12 containing a metaxylilene group-containing polyamide resin and a soft resin having solubility to the metaxylilene group-containing polyamide resin and softer than the metaxylilene group-containing polyamide resin, and a polyamide resin layer 13. The soft resin accounts for 10 wt.% to 30 wt.% of the entire amount of the barrier layer 12, and a flexural modulus in an absolute dry state at 23°C according to an ASTM D790 of the soft resin is 2,000 MPa or less. Thus, the barrier layer 12 has the high fuel permeability and the high flexibility. Further, the tube has the polyamide resin layer 13. Thus, the shape of the tube 11 can be held without losing the high fuel permeability and the high flexibility of the barrier layer. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
