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US 8,945,081 B2Granted
Disposable wearing article
AssigneeUnicharm Corporation
InventorShunsuke Takino
Life of this patent
Estimating the term…
Abstract
A disposable wearing article having a rear waist region which includes a rear waist main section facing a front waist region and a buttocks-covering section lying adjacent to a crotch region. The rear waist main section is divided into an upper area lying adjacent to a waist-opening and a lower area lying adjacent to the crotch region wherein a tensile stress per unit width dimension in the buttocks-covering section is lower than a tensile stress per unit width dimension in the lower area of the rear waist main section.
Claims8
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.
20 more elements
Dependencies are inferred from the claim text.