A cap for mounting on an aerosol container, which is able to automatically release
the gas remaining therein with a simple action, when the container is to be discarded,
said cap comprising a top plate member having a periphery connected to an upper
end portion of a tubular body, wherein said top plate member has an aperture and
a lid for closing the aperture, said lid has a fixed end which is connected to
a margin of the aperture through a bendable line, such that the lid is able to
turn from a first position in which the lid closes the aperture, to a second position
in which the lid is protruding into the tubular body member so as to get in touch
with a top face of the discharge head that is depressed downwardly, and the top
plate member also has a stopper for fixing the lid in the second position so as
to keep the discharge head in such a pressed state.
