Method for producing a sealing tape roll, comprising: - providing a foam-barrier layer web which comprises at least one soft foam body able to recover after compression and at least one barrier layer, wherein the foam-barrier layer web has a top side, a bottom side and two side flanks (50, 52) connecting the top side and the bottom side, wherein a transverse direction of the foam-barrier layer web runs parallel to the bottom side of the foam-barrier layer web from one side flank to the other side flank, and wherein a longitudinal direction of the foam-barrier layer web is oriented parallel to the bottom side of the foam-barrier layer web and perpendicular to the transverse direction, and wherein the at least one barrier layer extends, substantially rectilinearly, only from the top side of the foam-barrier layer web in the direction of the bottom side of the foam-barrier layer web, but does not extend on the top side of the foam-barrier layer web; - compressing at least one predetermined portion of the foam-barrier layer web in a targeted manner and, as a result, deforming the at least one barrier layer in such a way that it has, at least in an upper region, a curved or angled form; - additionally compressing the entire foam-barrier layer web during the targeted compression or after the targeted compression so as to maintain the curved or angled form of the at least one barrier layer that is obtained during the targeted compression; and - forming a sealing tape roll by (i) winding up the foam-barrier layer web in the compressed state about an axis of rotation to form the sealing tape roll; or (ii) winding up the foam-barrier layer web in the compressed state about an axis of rotation to form an intermediate roll and severing the intermediate roll at one or more locations in an axial direction in order to create a plurality of sealing tape rolls which are less wide than the intermediate roll; or (iii) severing the compressed foam-barrier layer web in the longitudinal direction to form compressed foam-barrier layer strips and winding up the compressed foam-barrier layer strips about an axis of rotation (A, A') to form individual sealing tape rolls. - providing a foam-barrier layer web which comprises at least one soft foam body able to recover after compression and at least one barrier layer, wherein the foam-barrier layer web has a top side, a bottom side and two side flanks (50, 52) connecting the top side and the bottom side, wherein a transverse direction of the foam-barrier layer web runs parallel to the bottom side of the foam-barrier layer web from one side flank to the other side flank, and wherein a longitudinal direction of the foam-barrier layer web is oriented parallel to the bottom side of the foam-barrier layer web and perpendicular to the transverse direction, and wherein the at least one barrier layer extends, substantially rectilinearly, only from the top side of the foam-barrier layer web in the direction of the bottom side of the foam-barrier layer web, but does not extend on the top side of the foam-barrier layer web; - compressing at least one predetermined portion of the foam-barrier layer web in a targeted manner and, as a result, deforming the at least one barrier layer in such a way that it has, at least in an upper region, a curved or angled form; - additionally compressing the entire foam-barrier layer web during the targeted compression or after the targeted compression so as to maintain the curved or angled form of the at least one barrier layer that is obtained during the targeted compression; and - forming a sealing tape roll by (i) winding up the foam-barrier layer web in the compressed state about an axis of rotation to form the sealing tape roll; or (ii) winding up the foam-barrier layer web in the compressed state about an axis of rotation to form an intermediate roll and severing the intermediate roll at one or more locations in an axial direction in order to create a plurality of sealing tape rolls which are less wide than the intermediate roll; or (iii) severing the compressed foam-barrier layer web in the longitudinal direction to form compressed foam-barrier layer strips and winding up the compressed foam-barrier layer strips about an axis of rotation (A, A') to form individual sealing tape rolls. (i) winding up the foam-barrier layer web in the compressed state about an axis of rotation to form the sealing tape roll; or (ii) winding up the foam-barrier layer web in the compressed state about an axis of rotation to form an intermediate roll and severing the intermediate roll at one or more locations in an axial direction in order to create a plurality of sealing tape rolls which are less wide than the intermediate roll; or (iii) severing the compressed foam-barrier layer web in the longitudinal direction to form compressed foam-barrier layer strips and winding up the compressed foam-barrier layer strips about an axis of rotation (A, A') to form individual sealing tape rolls.