Cans can not be opened can be used to turn them upside down, and then use the palm of the bottom of the bottle a few more times, so that you can unscrew the lid of the can. You can also soak the can in warm water and use the principle of thermal expansion and contraction to open the jar. Or you can put a towel over the top of the canning lid, which can be easily unscrewed after increasing the friction.

1. Pat method: you can put the canning jar upside down on the desktop, and then forcefully pat the bottom of the canning jar, this method can also be the canning jar lid can be easily opened.

2. Lighter: you can use this lighter, grill the edge of the lid of the canning jar, canning jar lids are heated evenly, and then unscrew the lid of the canning jar, this method can also be the lid of the canning jar can be easily opened.

3. The use of friction, we prepare a dry towel, the towel will cover the top of the canning jar lid, which can play a role in increasing the friction of the edge, and then press the hand on the top of the towel, you can open the canning jar lid, very simple.

4. First of all, we will cans upside down, in the hands of the grip, and then with the palm of the hand hard in the bottom of the bottle more than a few shots, so that the bottle by the impact of the air inside the vibration will occur, which will hit the cap, so that it also has some loosening up, so then twisted it will be easy to unscrew, this method is also more commonly used in life.

5. You can also prepare a basin of warm water, and then will not be able to open the head in the basin inside the soaking, so that after a period of time will be removed from the glass jar, dry the water on it, you can make a strong hand to unscrew. Here is the use of the principle of thermal expansion and contraction, the same can easily open the can.