Disposable diaper and process for making the same
AssigneeUni-Charm Corporation
InventorsYoshikazu Shingu, Hirotomo Mukai
Life of this patent
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Abstract
A disposable diaper includes a pair of wings formed with a nonwoven fabric. Each of the wings is formed on its circumferentially outer edge with fastener sections each including a male member as a component of so-called mechanical fastener. The fastener sections are folded back onto inner surface of the wing so that only a portion of hooks constituting the male member are releasably engaged with the component fibers of the nonwoven fabric protruding toward the hooks.
Claims4
A disposable diaper comprising a liquid-pervious topsheet, a liquid-impervious backsheet and a liquid-absorbent core disposed between these two sheets so as to configure a front waist region, a rear waist region and a crotch region extending between these two waist regions in a longitudinal direction of the diaper wherein said rear waist region is formed on transversely opposite sides thereof with first wings extending outward in a circumferential direction intersecting said longitudinal direction and said wings are formed with fastener sections extending outward in said circumferential direction and provided on inner surfaces thereof with male members as components of mechanical fasteners, wherein:
- each of said wings has inner and outer surfaces of which at least said inner surface is formed with a nonwoven fabric;
- each of said fastener sections is folded back onto the inner surface of said wing so that said male member may be opposed to said nonwoven fabric of said inner surface and a plurality of hooks forming said male member may be releasably engaged only with a portion of fibers forming said nonwoven fabric protruding from said inner surface toward said male member.
A process for making a disposable diaper composed of a front waist region, a rear waist region and a crotch region extending between these two waist regions in the longitudinal direction of the diaper, said rear waist region being formed on transversely opposite sides thereof with wings extending outward in a circumferential direction intersecting said longitudinal direction, said wings being formed with fastener sections extending outward in said circumferential direction and said fastener sections being folded back, with inner surfaces thereof inside, in said circumferential direction so that male members of mechanical fasteners attached to inner surfaces of said fastener sections may be in contact with inner surfaces of said wings, said process comprising the steps of:
- forming inner and outer surfaces, at least said inner surfaces of said wings by a nonwoven fabric;
- and
- locally pressing said nonwoven fabric from the inner surface toward the outer surface thereof in its region being in contact with said male members so that fibers forming said nonwoven fabric partially protrude toward said male members and be releasably engaged only with a portion of a plurality of hooks forming said male members.
Dependencies are inferred from the claim text.