Foam in solution among surface active agent
Particles of antifoaming agent on the surface or
collected particles are adhered.
Adhered particles of antifoaming agent expands
on the foam surface.
And they invade the foam membrane, disturb molecular
arrangement of the foam membrane, or replace with
the foam membrane formation molecules, and they
increase surface-free energy of the foam membrane.
From that, they emit gases from the weak parts of
the foam membrane.
