| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material having a through-hole, by which material, the drop of a degree of vacuum is suppressed by preventing the intrusion of the outside air from the periphery of the through-hole. <P>SOLUTION: The vacuum heat insulating material having a through-hole is composed of a base material 21 having the through-hole formed thereon, a cylindrical element 31 fitted into the through-hole, and a skin material 41 which covers the base material 21 without closing the hole of the cylindrical element 31 and is deposited to the periphery of the hole of the cylindrical element 31 and has sealed the enclosed base material retaining space 48 in the state that the air inside the space has been discharged. Annular projections 34 at both ends of the cylindrical element cut into the heat adhesive inner layers 43 of the skin materials. Gas barrier layers 37 provided over the area from the outside peripheral surface to both ends of the cylindrical element are brought into close contact with gas barrier layers 45 of the skin material at the portions of the annular projections. Further, adhesive portions 35 at both ends of the cylindrical element, the portions not covered with the barrier layers, are adhered to the inner layers 43 of the skin materials. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
