Kao Corporation

Hidekazu Ito

Takao Koyama

Kenji Ishiguro

Ken Nemoto

Yasuyuki Okuda

Hisanori Watanabe

Takahiro Arimura

Hiroshi Inada

A disposable diaper comprising a liquid permeable topsheet, a liquid impermeable backsheet, and a liquid retentive absorbent memberand having a substantially oblong shape, the absorbent memberin the crotch portion having a middle absorbent portionwhich occupies the middle 3/7 of the width of the absorbent memberand side absorbent portionswhich each occupy the outermost 1/7 of the width of the absorbent member, wherein each side absorbent portionhas a larger unit absorption capacity than the middle absorbent portion, hydrophobic sheetsandare disposed on the lateral outer edge of each side absorbent portionto cover from the upper to lower surfaces of the edge, and an elastic memberis disposed in the part having each side absorbent portionin the longitudinal direction of the side absorbent portion

Disposable diaper

A disposable diaper comprising a fluid-permeable topsheet, a fluid-impermeable backsheet and a fluid-retentive absorbent core interposed between the topsheet and the backsheet, the disposable diaper being formed in a substantially vertically elongated configuration and having a stomach side, a back side and a crotch region positioned between the stomach side and the back side, wherein a second absorbent core is disposed at an outside region of each opposite side edge of the absorbent core at the crotch region along a longitudinal direction of the diaper, and an elastic member is disposed at the region where the second absorbent core is disposed along a longitudinal direction of the diaper.

Disposable diaper with improved leak prevention properties

Disposable diaper including lateral side cores

The present invention has a configuration such that a plurality of leg portion elastic members are arranged around the respective leg openings of a disposable diaper so that the respective leg portion elastic members are not connected or cross each other in a crotch portion, the minimum width of an absorbent article body at the crotch portion is within the range of from 250 to 350 mm, and the opposite side edges in the width direction of the absorbent article body in the crotch portion bend towards the external surface of the diaper, when worn. As a result, the ability for absorbing a large amount of body waste can be easily ensured, and the performance of preventing leakage from the crotch portion can be easily improved.

Disposable diaper having leg flap absorbent articles

A disposable diaper including a fluid-permeable topsheet, a fluid-impermeable backsheet and a fluid-retentive absorbent core interposed between the topsheet and the backsheet, the disposable diaper being formed in a substantially vertically elongated configuration and having a stomach side, a back side and a crotch region positioned between the stomach side and the back side, wherein a second absorbent core is disposed at an outside region of each opposite side edge of the absorbent core at the crotch region along a longitudinal direction of the diaper, and an elastic member disposed at the region where the lateral absorbent cores are disposed along a longitudinal direction of the diaper.

An absorbent article includes a liquid-permeable topsheet, a liquid-impermeable antileakage sheet, a liquid-retentive absorbent core, having a substantially elongate shape, and having upstanding guards formed on longitudinal left and right opposing side portions of the absorbent article, the upstanding guards are provided with a plurality of upstanding guard elastic members so as to form a gather over the entire region in the widthwise direction of the upstanding guard, the upstanding guard is sectioned into a free end region, a central region and a basal end region so as to trisect it in its widthwise direction, and the stress of the free end region is larger than that of the other regions.

Growing community of inventors

Tochigi, Japan

Hidekazu Ito