Release liner for repositionable adhesive articles

A release liner comprising:

• a carrier substrate;
• a thermoplastic polymer layer applied on one side of the carrier substrate;
• and
• a release layer applied on the thermoplastic polymer layer on the side opposite to the carrier substrate;
• wherein the thermoplastic polymer layer and the release layer include a network of ridges which result in elevations of the surface of the release liner on the side of the release layer;
• wherein the surface on the side of the release layer has a roughness at least between the ridges, such that it has a plurality of pits,
• wherein the average number of pits per an area of 3.4 mm2 of the plan view of the release liner surface is at least 50 as determined with a confocal 3D laser scanning microscope at a magnification of 100, wherein only pits are counted, which extend at least to a level of 10.0 μm above the deepest point of the deepest pit within said area of 3.4 mm2, and with the proviso that pits having a joint cross-sectional area in the plan view of the release liner surface at the level of 10.0 μm above the deepest point of the deepest pit are counted as a single pit, and
• wherein the pits are stochastically distributed at least between the ridges on the surface of the release liner.