Patent ID: 8419874

Claim:
A method of making diapers from a continuous sheet of a chassis sheet having a desired width dimension continuously fed, said method comprising: forming said continuous sheet of said chassis sheet at a distance in a width direction from an imaginary center line bisecting said width dimension of said continuous sheet of said chassis sheet with let-through openings for passage of feces at a regular pitch, each of said let-through openings having a shape substantially symmetric about an imaginary vertical line extending orthogonally to said imaginary center line; bonding absorbent panels, each having an absorbent core previously bonded to a middle section of a sheet piece having an area larger than the area of said absorbent core and positioned so that said absorbent core may face said let-through opening for the passage of feces and extend across said imaginary center line in said width direction so as to be substantially symmetric about said imaginary vertical line, to said continuous sheet of said chassis sheet web along the outer peripheral edge of said absorbent core to provide an assembly of said continuous sheet of said chassis sheet and said absorbent panels; coating the surface of said chassis sheet web opposite to the surface to which said absorbent panels have been bonded with hot melt adhesive so that the adhesive coated region may be defined between said imaginary center line and said let-through opening so as to be substantially symmetric about said imaginary vertical line; folding said continuous sheet of said chassis sheet in two along said imaginary center line with said surface coated with the hot melt adhesive inside and partially bonding said continuous sheet of said chassis sheet to itself; and cutting said assembly of said continuous sheet of said chassis sheet and said absorbent panels along said imaginary vertical line defined between each pair of the adjacent absorbent panels at said regular pitch to obtain said diapers.