Why do some hot water after hot water bottles, the lid is easy to bounce
Must be water is too hot, and the steam.You have not filled with hot water Mainly gas heat bilges cold shrink
Increasing the roughness of the lid.Lots of hot water in the cover cover good in a while
This is mainly due to heat the bottle contains certain air, you are in the lid of a cover some fast, compressed air, produce certain pressure, so the cap is bounce. You can slowly covered or sideways cover would not have appeared.
