| 摘要 |
PROBLEM TO BE SOLVED: To prevent contents from scattering or falling around when the contents are fed into a throw-in port of a tank, a reaction container or the like from a discharge port of a flexible container. SOLUTION: A rubber ring 6 in a concaved section having an indented part 5 at the inside with the inner diameter d at its upper part being smaller than the inner diameter D at the front end of a throw-in port 7 of a throw-in container is fitted into a discharge port 2 or fitted from the outside to a cylindrical resin film 4. Then, the discharge port 2 or the cylindrical resin film 4 of the flexible container 1 is connected to the throw-in port 7 with the discharge port 2 or the cylindrical resin film 4 applied along the outer circumferential face of the throw-in port 7 and with the indented part 5 of the ring fitted onto the outer circumferential face at the upper end of the throw-in port 7 by utilizing elasticity of the rubber ring 6. Since the inner diameter d of the discharge port 2 or the cylindrical resin film 4 narrowed down by the rubber ring 6 at the front end of the throw-in port becomes smaller than the inner diameter D at the front end of the throw-in port, throwing-in of contents into the throw-in container can be made easily and safely without making any waste with a slack, if produced at the discharge port 2 or the cylindrical resin film 4, raised up with hands.
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