| 摘要 |
Provided is an apparatus for producing hard polyurethane foam by a froth process having a foaming agent supply means that quantitatively supplies the inert gas as a foaming agent and a foaming means that discharges a hard polyurethane foam obtained by forming a foaming polyol composition, in which the foaming agent supply means has a pressure-reducing valve that reduces and adjusts the pressure of the inert gas and a needle valve that adjusts the flow rate of the inert gas, the foaming means has a compression cylinder for compressing and supplying the polyol composition, a regulation means that regulates the supply of the inert gas to the foaming means is provided between the foaming means and the foaming agent supply means, and a control means that controls the regulation means by sensing the operation of the compression cylinder is connected to the regulation means.
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