Put the ordinary rubber band on the bottle cap, so that when opening the can, it will increase some friction, so that the hand will not slip easily, which will make the force greater, and it will be easier to open the can, and it will not be impossible to open it because of slipping.

2. Heating method

Put a towel or rag soaked in hot water on the bottle cap for about 5 minutes, and open the bottle cap by using the principle of thermal expansion and cold contraction.

3. Material beating method

Put the cans on a hard floor, preferably a slate floor, gently touch the bottle cap with a little force several times, and then you can easily unscrew the lid by hand.

Extended data:

Precautions for warm water bag:

1, not suitable for pouring boiling water, hot water of about 90 degrees Celsius is just right, which can prevent rubber from aging in advance.

2, don't fill it too full, just fill it to 2/3 of the thermos bottle, then pump the air out of the bag and tighten the plug.

3. Pour off the water after use, and then blow some air to prevent the inner wall from sticking and hanging upside down.