| 摘要 |
PURPOSE:To enable to hold predetermined pressure over a long period with a simplified mechanism, by charging a powdery body as a main component in a pressure-resisting vessel equipped with an ejection valve, and packing said vessel with liquefied gas to atomize the powdery body. CONSTITUTION:A pressure-resisting vessel equipped with an ejection valve may be one, e.g. an air sol bomb equipped with an air sol valve, having strength enough to resist deformation under 13kg/cm<2>G and breakdown under 15kg/cm<2>G. As a powdery body, calcium carbonate, sodium bicarbonate, diatom, zeolite, etc. having a particle size of 10mum-0.3mm. may be used. The pressure-resisting vessel is packed with the powdery body having apparent specific gravity of about 0.2- 1 in an amount of about 70-95vol%. On the other hand, about 0.5-10mol/l liquefied gas of pressure of about 4.8-8.0kg/cm<2>G at 35 deg.C is poured as said liquefied gas in the cavity of the pressure-resisting vessel. Hence, an excellent pressurized condition can be held over a long period with satisfactory performance of ejection.
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