US Patent No.: 8,585,670 B2 
Inventor(s): Shunsuke Takino, Kagawa, Japan.
Company: Uni-Charm Corporation, Ehime, Japan.
Filed: 7/11/08
Issued: 11/19/13

A disposable pants-type body fluid absorbent wearing article having a longitudinal direction, a transverse direction and a vertical direction being orthogonal one to another, the wearing article comprising: front and rear waist regions and a crotch region combined to define a waist-opening and a pair of leg-openings, a body fluid absorbent panel extending in said longitudinal direction, wherein the body fluid absorbent panel is affixed to sheet members defining respective inner surfaces of said front and rear waist regions, and wherein said front and rear waist regions are elasticized along a peripheral edge of said waist-opening and respective peripheral edges of said leg-openings, said body fluid absorbent panel comprises a body fluid absorbent core, a liquid-pervious sheet and a liquid-impervious sheet, said core being sandwiched between the liquid-pervious sheet and the liquid-impervious sheet, a body fluid absorbent pad extending in said longitudinal direction and bonded to respective said inner surfaces of said front and rear waist regions, and flaps formed by the liquid-pervious sheet and the liquid-impervious sheet along side edges of said body fluid absorbent pad and opposed in said transverse direction, said flaps respectively comprising proximal edges being contiguous to said side edges of said body fluid absorbent pad and extending in said longitudinal direction and free edges, each at a distance from said body fluid absorbent pad in said transverse direction, extending in parallel to said proximal edges, wherein said free edges are provided with first elastic members attached under tension thereto, said front and rear waist regions comprise second elastic members extending in the transverse direction, said second elastic members being provided along said peripheral edges of said leg-openings and attached under tension thereto so as to intersect said side edges of said body fluid absorbent pad, regions of said flaps in which said free edges of said flaps developed outward in said transverse direction overlap said second elastic members are affixed to said inner surfaces of said front and rear waist regions, and an inner surface, facing toward the body fluid absorbent core, of the liquid-pervious sheet and an inner surface of the liquid-impervious sheet are directly bonded together.