| 摘要 |
PROBLEM TO BE SOLVED: To cleanly take out contents without waste without need for tilting a container at a desired flow rate free from contact with an atmosphere by including a content supply mechanism comprising an outer vessel formed of a pressure-resistant container having rigidity and an inner vessel formed of a flexible container for taking out the contents at a desired flow rate. SOLUTION: A double-structured container A comprises an outer vessel 10 and an inner vessel 11 wherein the outer vessel 10 is pressure-resistant with rigidity and is equipped with a fluid inlet while a material of the vessel may be preferably rigid plastic, metal or the like and formed with a circular or polygonal cross section, and pressure-resistance is required. A mechanism for supplying fluid at a desired pressure to a space between the outer vessel 10 and the inner vessel 11 with a content supply mechanism D connected for discharging, at a constant pressure, contents of a pressure transmission mechanism B for supplying fluid at a constant pressure to the space between the inner vessel 11 and the outer vessel 10 is located on an upper part of the outer vessel 10. A discharge tube is extended inside the inner vessel 11 from an upper end opening to the vicinity of a container bottom, whereby a 1iquidlike object inside is discharged to an upper part by reduced pressure from the lowest part of the discharge tube.
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