BOTTLE CAP FOR BOTTLE FOR LIQUID Russian patent published in 2024 - IPC B65D41/28 B65D47/18 B65D51/16 

FIELD: packing and storage.

SUBSTANCE: invention relates to the field of making bottles for liquid and in particular to a bottle cap for a liquid bottle. A bottle cap for a liquid bottle comprises a cap body and a plug body secured in the cap body. In the body of the cap there is an air hole and the body of the pipette; the body of the plug is made of a flexible material. Plug body includes a cylindrical straight insert at one end and a liquid outlet end in a normally closed state, in the cap body there is a cylindrical air guide wall and a straight insert end, which comes into contact with the cylindrical air guide wall, when the internal pressure at the end of the straight insert is higher than the external pressure, in this case the end of the straight insert is sealed with the wall of the cylindrical air guide, and the liquid outlet end is deformed for opening, which provides interaction between the inner part of the straight insert end and the drop hole. When the internal pressure of the end of the straight insert is lower than the external pressure, the end of the direct insert is compressed, providing interaction between the internal part of the end of the direct insert and the air hole.

EFFECT: providing smooth liquid instillation and return of the bottle under the liquid to its initial state, which increases stability of the bottle cap usage.

10 cl, 10 dwg