Disposable pants-type body fluid absorbent wearing article

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, comprising front and rear waist regions and a crotch region combined to define a pants-like shape having a waist-opening and a pair of leg-openings, wherein a body fluid absorbent panel provided in said front waist region extends in said longitudinal direction and 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 disposable pants-type body fluid absorbent wearing article being characterized in that:

• said body fluid absorbent panel comprises a body fluid absorbent core, a liquid-pervious sheet used to wrap said core, 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 along side edges of said body fluid absorbent pad 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;
• and
• said front and rear waist regions are provided along said peripheral edges of said leg-openings with second elastic members attached under tension thereto so as to intersect said side edges of said body fluid absorbent pad and 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.