An adhesive (211) is applied in such a curved trajectory that an angle formed by a tangent line (ml) and an axis (Ax) fells within a range of ± 90° in a plan view of a web (7) obtained by the overlapping a first web (7A) and a second web (7B). The tangent line (nl) is drawn at any point on the trajectory of the adhesive (211). The axis (Ax) is orthogonal to a trailing g-side~(L1 or L2 ) of-a pressing region, in which the web (7) is pressed by an upper roller (121), in a con¬veyance direction (MD).
