Mondi Ag

Helmut Schönfelder

Wilhelm Munninger

Rolf Krekel

The present invention inter alia relates to a release liner, which comprises according to an embodiment, 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. The thermoplastic polymer layer and the release layer include a network of ridges resulting in elevations of the surface of the release liner. The surface on the release layer side has a roughness at least between the ridges, such that it has a plurality of pits. The average number of pits per an area of 3.4 mmof the plan view of the release liner surface is at least 50. The pits extend at least to a level of 10.0 μm above the deepest point of the deepest pit within said area.

Growing community of inventors

Thansau, Germany

Helmut Schönfelder