The invention relates to a pressure-sensitive adhesive. Provision is made for this pressure-sensitive adhesive to comprise (a) a first layer of a first polyacrylate pressure-sensitive adhesive containing at least 50% by weight, based on the first polyacrylate pressure-sensitive adhesive, of an acrylic and/or methacrylic ester of the formula CH.sub.2.dbd.CH(R.sub.1)(COOR.sub.2); (b) a second layer comprising (b1) a polyacrylate containing at least 50% by weight, based on the polyacrylate, of an acrylic and/or methacrylic ester of the formula CH.sub.2.dbd.CH(R.sub.1)(COOR.sub.2, and (b2) at least 15% by weight, based on the second layer, of chalk; and (c) a third layer of a second polyacrylate pressure-sensitive adhesive containing at least 50% by weight, based on the second polyacrylate pressure-sensitive adhesive, of an acrylic and/or methacrylic ester of the formula CH.sub.2.dbd.CH(R.sub.1)(COOR.sub.2) in each formula R.sub.1 is H or CH.sub.3 and R.sub.2 is an alkyl chain having 1 to 20 carbon atoms.