Paper diaper and method for manufacturing extensible sheet used in the diaper

A method for manufacturing an elastic sheet, comprising:

• making a laminate by a process comprising disposing a plurality of elastic members in an extended state between upper and lower sheets;
• passing the laminate between a first roller and a second roller opposed to the first roller, wherein the first roller includes a first region in which a plurality of convex portions are provided on a surface of the first roller and a second region in which the plurality of convex portions are not provided on a surface of the first roller, the convex portions are arranged at intervals in rows extending along an axial direction of the first roller, and the plurality of rows are arrayed along a circumferential direction of the roller in the first region;
• and
• cutting the elastic members of the laminate by the convex portions of the first roller using at least one of heat and pressure, wherein the convex portions are arranged so as to overlap along the circumferential direction of the first roller such that each of the elastic members is cut;
• wherein the cutting is performed such that portions of the laminate corresponding to the first region of the first roller where the elastic members are cut alternate with portions of the laminate corresponding to the second region of the first roller where the elastic members are not cut along a feeding direction in which the laminate is fed through the first and second rollers.