| 摘要 |
PROBLEM TO BE SOLVED: To provide a head space purging method for a container with which an appearance of a product is improved, inspection of a hermetic property of the container is easy, and a flavor of contents is not deteriorated due to dissolution of carbon dioxide gas into the contents. SOLUTION: The head space of the container filled with the contents is replaced with a nitrous oxide gas or a mixture of the nitrous oxide gas and a nitrogen gas. COPYRIGHT: (C)2004,JPO&NCIPI
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