| 摘要 |
A liquid bag comprising a bag main body substantially cylindrically formed of soft thermoplastic resin sheet, a liquid received in this bag main body, a first port formed in the bag main body to introduce a gas into the bag main body, a gas introducing passageway for introducing the gas, which is introduced from this first port, into the liquid, and a second port formed in the bag main body to feed gas, which has passed through the liquid, and/or liquid into the outside, wherein the gas introducing passageway is partition-formed by hot-welding a portion of the bag main body, and fine passageways are formed to allow the gas introduced through the first port to bubble in the liquid.
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