Abstract: A release liner having a generally flat first substrate, with a first side and a second side. The first side includes a first coating, providing release against a pressure-sensitive adhesive, when that pressure sensitive adhesive is contacted with the first side. The release liner also includes a. second, preferably solvent-free, curable coating for application to the second side of the release liner. That coating comprises a mixture, the mixture having two pre-polymer components, the first pre-polymer component comprising at least one monomer, and the second pre-polymer component comprising either (a) at least one oligomer or (b) at least one soluble resin. The coating further comprises insoluble non-mineral type particles within that mixture. The insoluble non-mineral type particles preferably comprise an insoluble polymer powder, and most preferably an insoluble polyamide powder.