| 摘要 |
PROBLEM TO BE SOLVED: To effectively eliminate foam existing in a head space without damaging a container, simultaneously defoam and replace with a gas to speed up, and improve the gas replacement ratio of a container having a narrow mouth. SOLUTION: A heated and moistened replacement gas of 100°C or lower is obtained by a method either by passing a replacement gas directly through heating water, or indirectly heating the gas by a heating medium and then passing through the heating water, or indirectly heating the gas by the heating medium and then spraying vapor into the heated replacement gas. The heated and moistened replacement gas is sprayed toward a container mouth by a heated and moistened replacement gas spraying part 3 as a replacement gas spray stream 26 into the container 40 and as a shield gas spray stream 27 for surrounding its circumference. COPYRIGHT: (C)2004,JPO
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