TECHNICAL FIELD The present invention relates to an improvement in a cap structure of a container in which a container containing a liquid such as an injection solution is sealed with a sealing material such as a rubber stopper and the opening portion and the sealing material are covered with a cap. A cap structure of a container of the present invention is characterized in that a cap body such as a vial bottle is provided with a hollow annular peripheral wall portion having an upper surface opened with a part of the upper wall surface of the cap protruding upward, The back surface of the pressing surface portion having the pressing surface abuts against the abutting surface at the upper end of the peripheral wall portion and the pressing main body portion is fixed in the hollow of the annular peripheral wall portion and the elastic force of the sealing member And a pressing portion made of a synthetic resin at least the pressing surface portion of which is colored in a predetermined color, wherein the annular peripheral wall portion has an annular circumferential wall formed with an annular And the thin portion of the second electrode is formed.本発明は、注射用薬液等の液体を収納した容器をゴム栓等のシール材で密封し、その開口部とシール材とをキャップで覆うようにした容器のキャップ構造の改良に関する。本発明の容器のキャップ構造は、バイアル瓶等のキャップが、キャップ上壁面の一部で上向きに突設されて上面が開口した中空の環状周壁部を設けた金属製のキャップ本体と、前記環状周壁部の上端の衝合面に、押圧面を有する押圧面部の裏面が衝合すると共に、押圧本体部が環状周壁部の中空内に固定され、該押圧本体部の下方にシール部材の弾性力に抗してシール部材を押圧する下方突部を有し、少なくとも押圧面部が所定の色に着色された合成樹脂製の押圧部とからなり、前記環状周壁部の外周壁の基部に沿って環状の薄肉部が形成されていることを特徴とする。
