PROBLEM TO BE SOLVED: To provide a method of connecting a lid which permits an increase in internal pressure to be restrained when a liquid, a powder or grains are packed in a container body and then the lid is to be attached thereto.SOLUTION: The container body 2 and the lid 3 are connected under an atmosphere of negative pressure lower than the atmospheric pressure. Connecting the lid reduces the internal capacity and makes the internal pressure almost equal to the atmospheric pressure. That is, the internal pressure when the lid is connected does not become higher than the atmospheric pressure, a liquid filling the interior does not leak from between the container body and the lid and the lid does not bend, tending to come off.COPYRIGHT: (C)2010,JPO&INPIT【課題】容器本体に液体、粉体、又は粒体を詰め、その後、蓋体を取付ける場合に内圧の上昇を抑えることが出来る蓋体の結合方法を提供する。【解決手段】大気圧より低いマイナス圧の雰囲気下で容器本体2と蓋体3を結合する。蓋体を結合することで内容積が小さくなり、大気圧にほぼ等しくなる。すなわち、蓋体結合状態での内部圧力は大気圧より高くならず、内部に充填された液体が容器本体と蓋体の間から漏れることはなく、又、蓋体が外れようとして曲がることもない。【選択図】図2
