| 摘要 |
PROBLEM TO BE SOLVED: To provide a double container making variation in a foam quality small by preventing counter flow of content fluid remaining in an expanded material, and further simplified in a structure.SOLUTION: A double container 1A is provided with a non-return valve 5 which includes: a cylindrical body 5a partitioning an interval between a liquid inflow port 4b and an air inflow port 4g between an inside plug 4A and a dispensing cap 7A, and surrounding and holding an expanded material 6; a liquid valve body 5c closing the liquid inflow port 4b by being connected to an internal surface of the cylindrical body 5a, and on the other hand, opening the liquid inflow port 4b by compressing a storage space S; an air valve body 5d closing the air inflow port 4g by being connected to an external surface of the cylindrical body 5a, and on the other hand, opening the air inflow port 4g by compressing an inner space N; and an air outflow port 5e penetrated into the cylindrical body 5a and opened toward a lateral face of the expanded material 6 so as to flow air from the air inflow port 4g.SELECTED DRAWING: Figure 1 |
