03.06.18
Satoru Sakaguchi, Kanonji, Japan.
Assigned to Unicharm Corporation, Ehime, Japan.
Filed: 12/28/12
Issued: 2/6/18
A disposable diaper, comprising: a front waistline portion, a rear waistline portion, a crotch portion positioned between the front waistline portion and the rear waistline portion, an absorber spanning the crotch portion and extending in the front waistline portion and the rear waistline portion, a product longitudinal direction from the front waistline portion towards the rear waistline portion, and a product width direction perpendicular to the product longitudinal direction, a sheet-shaped elastic element provided in the rear waistline portion, wherein the sheet-shaped elastic element is a stretchable sheet including a stretching portion stretchable in the product width direction, the absorber comprises: an absorber core, a low rigidity portion, wherein a basis weight of the low rigidity portion is lower than a basis weight of a remaining part of the absorber, or the low rigidity portion is a portion where the absorber core does not exist, side portions located outside and on opposite sides of the low rigidity portion in the product width direction, a non-stretching portion that is unstretchable in the product width direction, and a pair of stretch control portions, wherein a stretch of the stretch control portions in the product width direction is more controlled than that of the other portions, the non-stretching portion is provided, in the product longitudinal direction, between the crotch portion and the stretching portion, the stretching portion overlaps at least a part of the low rigidity portion in a plan view of the disposable diaper when the diaper is flatly developed, the low rigidity portion is arranged between the pair of stretch control portions in the product width direction, the low rigidity portion extends in the product longitudinal direction up to a rear end of the absorbent core in the rear waistline portion, a width of the low rigidity portion in the product width direction increases, in the product longitudinal direction, towards the rear end of the absorbent core in the rear waistline portion, and the sheet-shaped elastic element straddles the low rigidity portion and the side portions.
Assigned to Unicharm Corporation, Ehime, Japan.
Filed: 12/28/12
Issued: 2/6/18
A disposable diaper, comprising: a front waistline portion, a rear waistline portion, a crotch portion positioned between the front waistline portion and the rear waistline portion, an absorber spanning the crotch portion and extending in the front waistline portion and the rear waistline portion, a product longitudinal direction from the front waistline portion towards the rear waistline portion, and a product width direction perpendicular to the product longitudinal direction, a sheet-shaped elastic element provided in the rear waistline portion, wherein the sheet-shaped elastic element is a stretchable sheet including a stretching portion stretchable in the product width direction, the absorber comprises: an absorber core, a low rigidity portion, wherein a basis weight of the low rigidity portion is lower than a basis weight of a remaining part of the absorber, or the low rigidity portion is a portion where the absorber core does not exist, side portions located outside and on opposite sides of the low rigidity portion in the product width direction, a non-stretching portion that is unstretchable in the product width direction, and a pair of stretch control portions, wherein a stretch of the stretch control portions in the product width direction is more controlled than that of the other portions, the non-stretching portion is provided, in the product longitudinal direction, between the crotch portion and the stretching portion, the stretching portion overlaps at least a part of the low rigidity portion in a plan view of the disposable diaper when the diaper is flatly developed, the low rigidity portion is arranged between the pair of stretch control portions in the product width direction, the low rigidity portion extends in the product longitudinal direction up to a rear end of the absorbent core in the rear waistline portion, a width of the low rigidity portion in the product width direction increases, in the product longitudinal direction, towards the rear end of the absorbent core in the rear waistline portion, and the sheet-shaped elastic element straddles the low rigidity portion and the side portions.
