If the lunch box lid is sucked, you can try the following methods to solve it:
Hot water soaking method: Turn the lunch box upside down and soak it in hot water, or directly pour boiling water on the lid, and use the principle of thermal expansion and contraction to loosen the lid. Remember to be careful not to get burned!
Reheating method: If the lunch box cannot be opened after being heated in the microwave, you can try to heat it again and then open it while it is hot. In this way, the air inside expands and the lid is easy to open.
Wait for cooling or soak in cold water: If the lunch box is hot, you can patiently wait for it to cool for a while, or soak the lunch box in cold water, and use the contraction effect to create a gap between the lid and the lunch box.
Lubrication or degassing method: Squeeze some detergent in the gap between the lid and the lunch box to increase lubrication, or find a small tool to gently pry open the edge of the lunch box to release some air.
