SAFETY PLUG Russian patent published in 2015 - IPC B65D41/00 B65D41/28 B65D39/02 F16K1/12 

FIELD: packaging industry.

SUBSTANCE: invention relates to means for sealing bottles, but can be used for sealing other containers for liquid and bulk products. The safety plug 1 is mounted on the bottle 2 with an annular projection 3, radial ribs 4. The safety plug 1 consists of a depositing funnel 5 with a pipe 6, a lid 7 with a retainer 8, a metal cap 9, a gasket 10 with a seat 11, a valve 12. The seat 11 has elastic elements 13 limiting the channels 14 when the valve is open. The conical surface 17 of the valve disc deforms the elastic elements 13 and closes the channels 14. When opening the bottle 2 the lid 7 is removed, the elastic elements 13 lift the valve 12 and the pressure above and below the valve 12 is aligned.

EFFECT: improvement of sealing.

2 dwg