| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a foam molded article which can control the dissolved concentration of carbon dioxide gas in a polyurethane foam raw material and can stably control an expansion ratio.SOLUTION: A method for manufacturing a foam molded article includes, in a low density foaming method where carbon dioxide gas is mixed into a polyurethane foam raw material mainly comprising a polyol to form foams, a step of mixing the carbon dioxide gas into the polyurethane foam raw material and then introducing the polyurethane foam raw material into a decompression measurement device, and measuring a coefficient of cubic expansion of foams of the carbon dioxide gas in a polyol formed when pressure is reduced. |
