| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for replacing a gas to a powder granular substance capable of efficiently making the gas substitute for the powder granular substance by a simple mechanism in a short time and suitable for an automatic line. SOLUTION: A casing 7 making a bag 1 being a container under an open condition where a powder 3 is filled exist in a semi-sealed atmosphere, a substituting gas introducing path 8 for introducing the replacing gas into the casing 7, and a pressure oscillation granting means 9 for granting a pressure oscillation into the casing 7, are installed, and the pressure oscillation is granted while the substituent gas is flowed in the semi-sealed atmosphere. As going-in and -out of the gas into a mass of the powder 3 is repeated thereby and the gas substituting for the powder 3 which fills the bag 1 is performed, it is possible to simplify the apparatus itself, and a period for maintenance can be lengthened. It is possible to prevent the powder 3 from flying up caused by mechanical vibration or the like, and there exists no possibility of generating a contamination of the environment, fault of sealing or the like. COPYRIGHT: (C)2005,JPO&NCIPI
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