JP2010075464A5 - - Google Patents

Claims (6)

A liquid-permeable surface sheet;
A liquid impervious sheet;
Between the liquid-permeable surface sheet and the liquid-impermeable sheet, an absorber formed by an aggregate of absorbent materials interposed so as to extend from the ventral part to the dorsal part, and
A pocket formed of at least one of a low-weighted portion having a lower basis weight of absorbent material than the surroundings and a non-weighted portion having no absorbent material provided in the absorber;
An excretion display unit that is provided between the absorber and the liquid-impermeable sheet and changes color by contact with excretory liquid;
A disposable diaper with
The pocket extends in an elongated shape along the front-rear direction so as to include the excretion position in the widthwise center of the absorber,
The excretion display part is configured such that a part extending in the front-rear direction along the side edge of the pocket is defined as the excretion position so that a part or all of the width direction overlaps with a non-pocket part located beside the pocket. Including in the front-rear direction range,
A disposable diaper characterized by that. When the total length of the diaper is L, the front-rear distance between the center of the diaper and the front end of the excretion indicator is DA, and the front-rear distance between the center of the diaper and the rear end of the excretion indicator is DB ,
0.3L / 2 ≦ DA ≦ 0.5L / 2
0.3L / 2 ≦ DB ≦ 0.5L / 2
The disposable diaper according to claim 1, wherein When the front-rear direction length of the excretion display unit and Y _1, the length of the pocket and Y _2,
0.5Y ₁ ≦ Y ₂ ≦ 1.5Y ₁
And the disposable diaper of Claim 2 with which 50% or more of the front-back direction range in which the said excretion display part is arrange | positioned overlaps with the front-back direction range in which the said pocket is arrange | positioned.   It has a hydrophobic part that covers the surface side of the excretion display part, and excretion liquid that has permeated the absorber is configured to pass through or wrap around the hydrophobic part to reach the excretion display part. The disposable diaper according to claim 3.   The surface sheet has a large number of transmission holes in a predetermined range including a portion overlapping the pocket, and the portion overlapping the pocket is not joined to a member adjacent to the lower side at least in the center in the width direction. The disposable diaper of any one of Claims 1-4 in which the accommodation space which continues from the back surface of the said surface sheet to the inside of the said pocket is formed. The absorbent material is pulp fiber and superabsorbent polymer,
The absorbent body is wrapped by a liquid-permeable packaging sheet,
The excretion indicator is a liquid-impervious hot melt adhesive containing a color-changing substance that changes color by contact with excretory liquid, ink that changes color by contact with excretion components, or ink that dissolves by contact with excretion components. It is formed by being applied to the absorbent body side of the adhesive sheet,
The disposable diaper of any one of Claims 1-5.