| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vacuum heat insulating panel, which causes no trouble in filling of urethane foam and causes no defective sealing part in manufacture of a heat insulating case body. SOLUTION: In a vacuum heat insulating panel in which a core material 2 made of a plate type porous substance is surrounded by a covering material 1 provided with a gas barrier property, the covering material 1 is provided with inward bend parts 1a-1d folded back inward in the left and right ends of the two opposed thickness faces of the core material 2, and between the inward bend part in the left end and that in the right end, an auxiliary sheet 12 provided with a thickness substantially equivalent to that of the covering material 1 folded back inward is inserted, and then, the covering material 1 on the upper and lower sides of the core material 2 are stuck together via the auxiliary sheet 12.</p> |
