Rubber-based pressure sensitive adhesive foam

A pressure sensitive assembly comprising:

• 1) a core layer comprising a pressure sensitive adhesive foam comprising
• a) from 30 wt % to 70 wt % of a rubber-based elastomeric material,
• b) from 10 wt % to 45 wt % at least one hydrocarbon tackifier,
• c) from 0.1 wt % to 10 wt % of a crosslinking additive selected from the group of multifunctional (meth)acrylate compounds, and
• d) from 2 wt % to 30 wt % of a filler material selected from the group consisting of microspheres, expandable microspheres, gaseous cavities, glass beads, glass microspheres, glass bubbles and any combinations or mixtures thereof;
• and
• e) optionally, from 1 wt % to 40 wt % plasticizer selected from the group consisting of polyisobutylenes,
• wherein the hydrocarbon tackifier(s) and/or the plasticizer(s) have a Volatile Organic Compound (VOC) value of less than 1000 ppm, when measured by thermogravimetric analysis by measuring the weight loss during 30 minutes at 90° C;
• and
• wherein the pressure sensitive adhesive foam is crosslinked with the crosslinking additive and electron beam radiation;
• and
• 2) a first skin layer comprising a second pressure sensitive adhesive, wherein the first skin layer is not a foam.