PA-6 films were
prepared as a multilayer film by bubble film sheet co-extrusion (130 8C–14,000 kPa), identi-
fied according to the layers distribution as control and active casings by adding 3% (w/w) of
silver–zinc crystals to obtain a film with good barrier and mechanical properties. DSC, DMTA
and SEM were also evaluated for determining the effects of microparticles in the polymeric
matrix.