  We study the kink-antikink scattering within the double sine-Gordon model. In
the numerical simulations we found a critical value $v_{cr}$ of the initial
velocity $v_{in}$, which separates two different scenarios: at $v_{in}<v_{cr}$
the kinks capture each other and form a bound state, while at $v_{in}>v_{cr}$
the kinks pass through each other and escape to infinities. We obtain
non-monotonous dependence of $v_{cr}$ on the model parameter $R$. Besides that,
at some initial velocities below $v_{cr}$ we observe formation and interaction
of the so-called oscillons (new phenomenon), as well as escape windows
(well-known phenomenon).
