Selectively depositing polymerization initiator and applying crosslinkable monomer on coated support for covering

Abstract From the Canadian patent

The processes of the invention comprise depositing onto a foamable or non-foamable support, in a first zone a coating or, print containing at least one first polymerisation initiator and in a second zone which can optionally partially encompass the first zone, a coating based on a crosslinkable monomer containing at least one second polymerisation initator at least two of the, initiators being different and being triggered either by different effects or by one and the same effect but by different spectral zones. The coatings are subjected to a pre-gelling and at least, locally, a graining operation a polymerisation of the first zone, so as to fix its appearance and a gelling which, by …