| 摘要 |
A container (1) , such as a bottle or jar, comprises a product chamber(9) for containing a product. The product chamber has a product opening (7) that opens into the exterior. A closure member (11) is releasable mounted on the product opening(7) . The container(l) further comprises an additive chamber(20) for containing an additive. The container (1) comprises a pressure valve (27) that connects the additive chamber (20) and the product chamber (9) with each other. The pressure valve (27) has a closed position when the pressure (pi) inside the product chamber (9) is higher than the pressure (p2) inside the additive chamber(20) , and has an open position for discharging additive from the additive chamber (20) into the product chamber (9) whan the pressure (pi) inside the product chamber (9) is lower than the pressure (p2) inside the additive chamber(20) . The pressure(pl) inside the product chamber(9) is higher than the ambient pressure (patm) and the pressure (p2) inside the additive chamber (20) is both lower than the pressure (pi) inside the product chamber (9) and higher than the ambient pressure (patm) . |
