| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material manufacturing method which is capable of efficiently and collectively manufacturing a large amount of vacuum heat insulating materials and suitable for mass production. <P>SOLUTION: A plurality of cores 2 separated from each other and disposed on a substantially same plane are covered by a laminate film 5 of gas barrier property, and the inside of the laminate film 5 is evacuated. A multi-core vacuum heat insulating material 18 having a heat-bonded portion 17 on the laminate film 5 located around each core is manufactured so that each of the plurality of cores 2 is located in an independent space. Next, the heat-bonded portion 17 of the laminate film 5 is cut so as to remain the heat-bonded portion of the predetermined width between the core and the heat-bonded portion. Since a desired vacuum heat insulating material is cut off from the multi-core vacuum heat insulating material 18, a large number of vacuum heat insulating materials or plurality of kinds of vacuum heat insulating materials of different size and shape can be manufactured in one evacuation of a vacuum packaging machine, and the vacuum packaging machine can be efficiently operated. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
