Multilayer pressure-sensitive adhesive assembly

Abstract

The present disclosure relates to a multilayer pressure sensitive adhesive assembly comprising at least a first pressure sensitive adhesive layer and a second pressure sensitive adhesive layer adjacent to the first pressure sensitive adhesive layer, wherein the first pressure sensitive adhesive layer and the second pressure sensitive adhesive layer comprise a polymer base material selected from the group of polyacrylates, wherein the second pressure sensitive adhesive layer has a thickness no greater than 250 micrometres and comprises silica nanoparticles having an average particle size no greater than 400 nm when measured by Dynamic Light Scattering (DLS) techniques according to the test method described in the experimental section, and wherein the first pressure sensitive adhesive layer has a thickness in a range from 250 to 5000 micrometres and is substantially free of particulate filler material. According to another aspect, the present disclosure is directed to an article comprising a medium surface energy substrate and a multilayer pressure sensitive adhesive assembly as described above adjacent to the medium surface energy substrate. In another aspect, the present disclosure relates to the use of a multilayer pressure sensitive adhesive assembly as described above for the bonding to a medium surface energy substrate or a high surface energy substrate.

Dependencies are inferred from the claim text.