Method for producing a sealing tape roll and sealing tape

A method for producing a sealing tape roll, comprising the following steps in the order given:

• providing a foam-barrier layer web, which comprises a plurality of foam strips arranged next to each other in a transverse direction, wherein a barrier layer is arranged between each pair of adjacent foam strips, wherein the foam-barrier layer web has a top surface, a bottom surface, and two side surfaces connecting the top surface and the bottom surface together, and wherein a longitudinal direction of the foam-barrier layer web is parallel to the bottom surface of the foam-barrier layer web and transverse to the transverse direction;
• applying a cover layer to the top surface and/or bottom surface of the foam-barrier layer web to form a coated foam-barrier layer web;
• parting the cover layer in the longitudinal direction in an area of at least two foam strips and a certain distance away from each barrier layer adjacent to these two foam strips, thus forming subsections of the cover layer, wherein a subsection of the cover layer at least partially covers at least two adjacent foam strips, wherein parting of the cover layer comprises introducing at least one cut into the cover layer, wherein the at least one cut is introduced only into the cover layer, or the at least one cut is introduced into the cover layer and penetrates into the associated foam strip, and wherein the depth of the at least one cut in the foam strip is a maximum of ⅓ of a thickness of the foam strip between the top surface and the bottom surface of the foam-barrier layer web;
• and
• forming a sealing tape roll by:
• (i) winding up the coated foam-barrier layer web around a rotational axis into a sealing tape roll;
• or (ii) winding up the coated foam-barrier layer web around a rotational axis into an intermediate roll and parting the intermediate roll at one or more points in an axial direction to produce a plurality of sealing tape rolls, which are narrower than the intermediate roll;
• or (iii) parting the coated foam-barrier layer web in the longitudinal direction to form foam-barrier layer strips and winding up the foam-barrier layer strips around a rotational axis into individual sealing tape rolls.