The present invention refers to a transdermal delivery device comprising a backinglayer (11), at least one adhesive layer (12), and a release liner coated with aUV-cured highly crosslinked silicone (13). The present invention also refersto a method of preparing a transdermal delivery device comprising a backing layer(11), at least one adhesive layer (12), and a release liner coated with a UV-curedsilicone (13).