What to do if the glass bottle cap is too tight and cannot be opened

Glass bottles are a commonly used container, and sometimes canned chili sauce, jam, salad dressing, etc. purchased in glass bottles are sealed and difficult to open. The following methods can be used to solve these problems:

1. Inverted method: Invert the glass bottle and vigorously tap the bottom of the bottle with the palm of your hand 3-5 times. After tapping, the bottle cap can be opened. 2. Hot water immersion method: Place the glass bottle in hot water, let it sit for 3-5 minutes, and then cover it with a thousand towels to unscrew the bottle cap. The bottle cap will expand when heated, and it is easy to open after expansion. 3. Knocking method: Regardless of the type of glass bottle, when the cap cannot be opened, gently tap the bottle cap to gradually loosen it, and then open it again. 4 Knife breaking method: Use metal knives or sharp tools such as spoons, chopsticks, keys, etc. to locate the gap between the glass bottle and the bottle cap, and pry the bottle cap along the edge of the bottle mouth glass. The method is similar to opening a beer bottle cap. Before touching, wrap it with a tissue to increase the friction coefficient.

5. Capper opening method: Select a suitable model of capper based on the size of the bottle cap, place the serrated part on the bottle cap, and rotate it by hand.

Why can't the glass bottle cap be opened

The reason why glass bottle caps often cannot be opened is mainly because there is no excess air inside the bottle, resulting in an imbalance of internal and external atmospheric pressure. The bottle is in a negative pressure state, and the bottle cap is sucked by the glass bottle, so it cannot be opened

Of course, it may also be due to the tight sealing of the glass bottle cap, which makes it difficult to open with personal strength. It may also be due to oil or sweat on the hands, which makes it difficult to open with force.