| 摘要 |
A double-walled container (1) comprising: an inner layer (4) with an upper opening (4b) that connects to the content storage section (S); an outer layer (5), which accommodates the inner layer (4) and has pores (6) in the mouth (5a) for introducing external air between the outer layer and the inner layer (4); and a pouring cap (3) that is provided with a content-pouring opening (9) and is fitted on the mouth (5a) of the outer layer (5). The double-walled container is provided with a pouring channel (16) that connects the storage section (S) with the pouring opening (9). In addition to the double-walled container being provided with an inner stopper (12) that is fitted in the upper opening (4b) and a check valve (21A) for opening and closing the pouring channel (16), the lower edge portion of the cylindrical wall (7) of the pouring cap (3) that covers the outer circumference of the mouth (5a) is fitted on the outer circumferential surface of the outer layer (5) so as to provide air flow regions (32, 33) inside the pouring cap (3), and a constricted passage (35) is provided in the pathway from an external air introduction hole (31), which connects the air flow regions (32, 33) to the outside, to the pores (6) via the air flow regions (32, 33). |
