The invention relates to substrate sections provided with a pressure-sensitive adhesive surface which are sealed in bags to protect against degradation of the active ingredients. The pressure-sensitive adhesive surface is covered by a carrier layer which at least partially projects further than said adhesive surface. The carrier layer is subdivided by an incision which forms a removal aid. During storage, adhesive in cold flow can escape through this incision, causing adhesion to the bag. Said substrate sections are characterised in that the carrier layer is configured as two carrier-layer sections (2, 3) which overlap in their adjoining areas (4), in order to improve storage stability by preventing the adhesive from escaping.
