| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a foamed molded product capable of rapidly removing the excess gas in the foamed cells of the foamed molded product and capable of efficiently performing a post process. SOLUTION: In the manufacturing method of the foamed molded product, a workpiece W obtained by foam molding is housed in a pressure container 11, the pressure container 11 is reduced in pressure by a vacuum means equipped with a vacuum tank 12 and a vacuum device 13, the excess gas in the foamed cells 3, 3, etc. of the workpiece W is removed and the workpiece W is aged until the gas pressure in the foamed cells 3, 3, etc. becomes the pressure in the vicinity of atmospheric pressure. The evacuation of the pressure container 11 is preferably performed in a state that the workpiece W is heated by the heater 16 installed in the pressure container 11. It is preferable to reduce the pressure in the pressure container 11 at a stroke by opening the on-off valve 15 of the piping 14 for connecting the pressure container 11 and the vacuum tank 12. COPYRIGHT: (C)2007,JPO&INPIT
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