A process for increasing the surface tension ("wettability") of a silicone
element crosslinked by polyaddition from a liquid composition containing
one or more .alpha.,.omega.-dimethylvinylpolydimethylsiloxanes (PDMS),
one or more
poly(dimethyl)(methylhydrogenosiloxy)-.alpha.,.omega.-dimethylhydrogenosi-
loxanes, and a platinum crosslinking catalyst. The silicone surface is
treated with a homogeneous atmospheric plasma using a plasma spraying
apparatus having a rotating head with one or more plasma nozzles that are
offset relative to the axis of rotation, each one being capable of
generating a plasma jet whose axis is parallel to said axis of rotation.
The articles to which the invention relate include composites of flexible
substrate (e.g. textile)/silicone coating. Application: adhesive bonding
of silicone surfaces crosslinked by .ident.Si--H/.ident.Si-vinyl
polyaddition.