| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bag thinning a fiber-based heat insulating material by simple operation and maintaining its state. <P>SOLUTION: When the bag 1 is de-aired, the fiber-based heat insulating material M is flattened out. After that, even if a suction pipe 2 is pulled out of a sleeve 12, air does not enter the bag 1 since the sleeve 12 is formed by cohesively laying two films on each other, and the two films stay in close contact with each other even after the suction pipe 2 is pulled out, so that the flattened state is maintained for a long time. <P>COPYRIGHT: (C)2011,JPO&INPIT |
