| 摘要 |
PROBLEM TO BE SOLVED: To produce a space filled with atmosphere of low oxygen, by difference of specific gravity of gases, with an opening part for taking in and out of a container, and seal a content in the container, for allowing packaging with a low oxygen condition at high speed.SOLUTION: A gas having specific gravity different from that of atmospheric air, as an inert gas, is used, for constructing such a structure in which, the gas is easily separated from the atmospheric air by difference of the specific gravity, thereby a space filled with a low oxygen atmosphere is created while having an opening part, and sequentially containers are taken in and taken out from the opening part, and a content is sealed in each container.SELECTED DRAWING: Figure 1 |
