Abstract: An adhesive tape section having an adhesive region and designed as a polygon having a number of sides and the same number of grip tabs arranged around the adhesive region, or designed as a circle, the adhesive region occupying a central portion of said circle, and a grip tab occupying an outer portion of said circle. The adhesive tape section, when bonded to a substrate, forms a bond with the substrate, which bond is releasible from the substrate by pulling on at least on of said grip tabs in the plane of the bond to stretch the adhesive tape section in the plane of the bond thereby to release the adhesive tape section from the substrate.

Abstract: Core for winding self-adhesively coated materials in web form, wherein the outer contour of the core is formed by at least one substantially round, self-contained segment, the ends of which run together in an edge, with a) the round segment being shaped convexly with respect to the axis of the core, b) the normals to the surface of the round segment being aligned substantially orthogonally with respect to the axis of the core, c) the edge being aligned substantially parallel with respect to the axis of the core and the core having a recess on the inside, so that the roll together with the core can be fitted on commercially available adhesive tape dispensers which have cylindrical core holders.