| 摘要 |
Disclosed is a bottle cap for vacuum preservation, comprising a cap main body consisting of a cylindrical cap tube inserted in a vessel, and a holder part extended from an end, located at a vessel inlet, of the cap tube; a piston airtightly inserted in the cap main body and axially sliding along the cap main body to release air in the vessel; and a valve member positioned in an end, located in the vessel, of the cap main body. The holder part is bent in such a way that its bent part is parallel to the cap tube, and the valve member opens and closes an air hole for introducing and releasing air in the vessel according to movement of the piston. The bottle cap can avoid disadvantages of deterioration of contents in the vessel, inconvenience of separately storing a pump, and loss of the pump. Furthermore, the vessel is readily vacuumized using the bottle cap. |
