Disclosed herein is a method for manufacturing a chassis web for a disposable pant article, the method comprising providing a first base web (1 ′) continuous in a machine direction (MD)； Attaching a continuous elastic waistband component (4) to a first base web (1 ') in an attachment region (5) extending to (MD)； a continuous first base web (1') and a continuous waist Attaching a continuous second base web (1 ″) to the band component (4) to cover at least the continuous waistband component (4), whereby the first side edge (12) and the second A synthetic base web (11) having a side edge (13) is formed, and the attachment region (5) includes a first side edge (12) and a synthetic base web (11). Spaced apart from at least one of the second side edge (13), step a； by cutting along cutting lines that extend through the attachment area (5) in the machine direction (MD) (L C) Cutting the synthetic base web (11) and the attached waistband part (4), thereby having a first side edge (12) and a first panel portion (18) and a first waistband. A first panel web (8) comprising a portion (28) and a second panel web (9) having a second side edge (13) and comprising a second panel portion (19) and a second waistband portion (29) The first panel web (8) and the second panel web (9) are formed of a first waistband portion (28) and a second waistband portion (2 9) extending sideways and facing each other and extending in the machine direction (MD)； shifting the position of the first panel web (8) and the second panel web (9) in the cross machine direction (CD) Thereby causing the first panel web (8) and the second panel web (9) to be brought into contact with each other in the cross machine direction (CD) with the first cut edge (38) and the second cut edge (39). The first side edge (12) and the second side edge (13) of the first panel web (8) and the second panel web (9) face each other in the cross machine direction (CD). Connecting the first side edge (12) of the first panel web (8)
