| 摘要 |
PROBLEM TO BE SOLVED: To preclude ride comfort in a vehicle from worsening and decrease the hazard of low internal pressure CBU. SOLUTION: At the inside surface of an inner liner 19, a heat insulating layer 23 is formed, which has a number of independent bubbles 21 and consists chiefly of a high molecular material M, and the independent bubbles 21 are formed inside the hollow glass beads 25 dispersed in the high molecular material M. COPYRIGHT: (C)2008,JPO&INPIT
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