Patent ID: 8945081
Filing Date: 2015-02-03
Classification: A61F

Abstract:
1. A disposable wearing article comprising: a longitudinal direction; a transverse direction orthogonal to said longitudinal direction; a front waist region; a rear waist region; a crotch region extending between said front and rear waist regions; a waist-opening; a pair of leg-openings; annular elastic waist panels defining said front and rear waist regions; and a liquid-absorbent structure attached to the inner surface of said elastic waist panel to define at least a part of said crotch region; side edges of the front and rear waist regions being put flat together and joined to each other at seam spots extending in the longitudinal direction; said rear waist region comprising a rear waist main section joined to the front waist region through the seam spots and a buttocks-covering section lying adjacent to said crotch region below the seam spots; said rear waist main section being divided into an upper area lying adjacent to said waist-opening and a lower area lying adjacent to said crotch region; a tensile stress per unit width dimension in said buttocks-covering section being lower than a tensile stress per unit width dimension in said lower area of said rear waist main section; said front waist region being divided into an upper area lying adjacent to said waist-opening and a lower area lying adjacent to said crotch region; and said lower area of said front waist region and said lower area of said rear waist main section being contiguous between said front and rear waist region; wherein a tensile stress per unit width of said lower area of said front waist region is equal to a sum of a tensile stress per unit width of said lower area of said rear waist main section and a tensile stress per unit width of said buttocks-covering section, said front waist region includes a plurality of elastic elements associated therewith arranged to extend in said transverse direction and spaced one from another in said longitudinal direction; said rear waist section includes a plurality of elastic elements associated therewith arranged to extend in said transverse direction and spaced one from another in said longitudinal direction; said buttocks-covering section includes a plurality of elastic elements each in a form of a string or a strand associated therewith arranged to extend in said transverse direction and spaced one from another in said longitudinal direction; and a spacing among said elastic elements associated with said buttocks-covering section is larger than a spacing among said elastic elements associated with said front waist region and said rear waist main section.