| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide such structure in which a sheathing material is not damaged by a core material having a surface layer hardened by an inorganic binder of a vacuum heat insulating material or an edge and a ridge of the core material used by cutting to a predetermined dimension. <P>SOLUTION: The core material is composed of the core material 31 of a single layered fibrous material layered product, and a coating layer 32 of a flexible fibrous material. After the core material 31 is covered with the coating layer 32, the core material 31 is arranged in the sheathing material 33 having a deposited film layer 33f, etc. inside to manufacture the vacuum insulating material by decompressing and sealing the inside of the sheathing material 33. Since a workpiece particle 31a of the core material 31 hardened with the binder, and a foreign substance 31b are directly brought in contact with the sheathing material 33, the sheathing material 33 is not damaged, it becomes easy to handle in manufacturing process of the vacuum insulating material itself, and it is easy to handle in each manufacturing process at assembling the vacuum insulating material into a refrigerator box body and door, so that a highly reliable refrigerator can be manufactured. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
