| 摘要 |
<p>PURPOSE: To provide manufacture of a vacuum heat-insulating panel which is constituted to reduce the occurrence of an uneven surface during vacuum exhaust. CONSTITUTION: Manufacture of a vacuum heat-insulating panel is such that a core material 24 formed in such a manner to fill breathable bag with powdery filler is contained in an outer wrapping bag 22 having gas barrier properties and thereafter, gas is exhausted so that the interior of the outer wrapping bag 22 is forced into a vacuum state, and the outer wrapping bag 22 is sealed to a vacuum heat-insulating panel 14. During exhaust, gas is simultaneously exhausted through two opening parts 22a and 22b, positioned facing each other, of the outer wrapping bag 22.</p> |
