| abstract |
Composite material comprising a base liner and a removable surface layer attached to the liner using a pressure-sensitive adhesive, wherein the base liner has a surface layer on its surface located near the pressure-sensitive adhesive which is more difficult to cut than the rest of the base lining material, so that when the composite material is cut with a punch to be able to selectively remove parts of the surface layer, the cookie cutter does not penetrate not in the lining beyond a predetermined limit. |