Disposable Diaper

Abstract

A diaper is provided on its inner side with a tufted sheet strip assembly. The assembly comprises a plurality of sheet strips, a sheet-like base member to which fixed end zones of the respective sheet strips are permanently bonded, and elastically biasing means adapted to space a transversely intermediate zone of the sheet-like base member from the inner side of the diaper.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a partially cutaway plan view showing a diaper according to the present invention;

FIG. 2 is a scale-enlarged diagram illustrating a part of FIG. 1;

FIG. 3 is a sectional view taken along the line III-III in FIG. 1;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a view similar to FIG. 4, showing the diaper as put on the wearer's body;

FIG. 6 is a view similar to FIG. 1, showing one preferred embodiment of the present invention;

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is a view similar to FIG. 1, showing another preferred embodiment of the present invention;

FIG. 9 is a sectional view taken along the line IX-IX in FIG. 8;

FIG. 10 is a perspective view partially showing an embodiment of a sheet strip assembly;

FIG. 11 is a perspective view partially showing another embodiment of the sheet strip assembly; and

FIG. 12 is a perspective view partially showing still another embodiment of the sheet strip assembly.

Claims

1. A disposable diaper comprising a crotch region having a back-and-forth direction and a transverse direction orthogonal to said back-and-forth direction, a front waist region extending forward from said crotch region and a rear waist region extending rearward from said crotch region, these regions respectively having inner surfaces and outer surfaces opposed to said inner surfaces wherein a tufted assembly comprising a plurality of sheet strips is attached to said inner surface in any one of said regions so as to extend in said transverse direction in orthogonal relationship with a center line extending in said back-and-forth direction so as to bisect widths of respective said regions, said disposable diaper further comprises: said assembly comprising a plurality of sheet strips, a sheet-like base member extending in said transverse direction and supporting thereon said sheet strips each having at least one end zone thereof permanently bonded to said sheet-like base member, and elastically biasing means adapted to space at least a transversely middle zone of said sheet-like base member from said inner surface in a direction defined from said outer side toward said inner surface.

2. The diaper defined by claim 1, wherein at least a part of said sheet-like base member constituting said assembly is elastically stretchable/contractible in said transverse direction and, in stretched state, end zones of said sheet-like base member opposed to each other in said transverse direction are bonded to said inner surface so as to ensure that said sheet-like base member serves as said elastically biasing means.

3. The diaper defined by claim 1, wherein said inner surface of said diaper is provided with a pair of leak-barrier cuffs extending along transversely opposite side edges of said crotch region and further into said front and rear waist region, each of said leak-barrier cuffs having a fixed edge bonded to said inner surface and a free edge extending in parallel to said fixed edge and cooperating with an elastic member stretched in said back-and-forth direction and bonded in such stretched state to said free edge, and said end zones of said sheet-like base member opposed to each other in said transverse direction are bonded to respective said free edges so as to ensure that said free edges serve as said elastically biasing means.

4. The diaper defined by claim 1, wherein said inner surface of said diaper is provided with an elasticized sheet including a first elastic member and a second elastic member extending so as to intersect with each other and to describe a X-shape in said crotch region, said first and second elastic members have lateral zones extending from said crotch region toward said front waist region and said rear waist region and a joint zone joining respective lateral zones to each other, respective said lateral zones being bonded to said inner surface while said joint zone is left free from said inner surface and includes the intersection of said first elastic member and said second elastic member, said elasticized sheet being elastically stretchable/contractible in directions in which said first elastic member and said second elastic member extend, said assembly lies further inside said elasticized sheet and being bonded to said joint zone so as to ensure that said elasticized sheet serves as said elastically biasing means.