| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing a heat insulating board, wherein lowering of a temperature in a bath can be much more suppressed and keeping a space for storing a cover becomes easy by reducing thickness and weight under maintaining a heat insulation property at the same level or higher than the so far conventional one and also maintaining rigidity with no deformation. <P>SOLUTION: The dies 26 is moved to the combining direction, whereby the sheet like resin 22 containing a vacuum heat insulating material 1 is held in a cavity formed in the die under combined state. Air is introduced from a nozzle 27, whereby softened sheet like resin 22 is expanded to the outer direction and pressed to the inner surface of the cavity of the die to form a heat insulating board having a predetermined shape. In this stage, a hot-melt adhesive 25 is previously coated on a surface of the vacuum heat insulating material 1, and thus the sheet like resin 22 and the vacuum heat insulating material 1 are adhered to each others. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
