This utility model discloses a soy sauce
bottle cap. The lower cap is mounted on the soy sauce
bottle, and its lower and upper sidewalls are respectively provided with a first outer edge and a second outer edge. The upper cap includes a bottom ring and a flip-top hinged to the bottom ring. A step is provided on the inner wall of the bottom ring. The upper end of the flip-top has a through hole penetrating its body, and an annular groove is provided inside the flip-top next to the through hole. The bottom ring is fitted onto the lower part of the lower cap, and the step abuts against the lower end of the first outer edge. The flip-top is fitted onto the upper part of the lower cap, and the second outer edge is interference-fitted into the annular groove. A filter layer is disposed inside the flip-top and covers the through hole. This utility model allows
fermentation gases generated during soy sauce storage to be discharged through the through hole on the flip-top. The filter layer provides a
barrier effect, enabling slow
discharge,
filtration, and adsorption, preventing the accumulation of
fermentation gases in the soy sauce
bottle due to prolonged periods without opening the cap, and preventing gas from rushing out when the flip-top is opened.