| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fire door in which countermeasures against fire are taken even in a wiring cavity by a simple means in wiring cables such as an electric cord and an optical cable inside the fire door. <P>SOLUTION: This fire door is provided with the cavity for wiring the cables, and the cables installed in the cavity, wherein the cable is constituted to have a heat expansive coating layer covering the outer peripheral surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
