12.01.16
Makoto Ichikawa, Kanonji, Japan; and Nobuhiro Tagawa, Kanonji, Japan.
Assigned to Unicharm Corporation, Ehime, Japan.
Filed: 10/10/12
Issued: 11/1/16
A pants-type wearing article having a longitudinal direction and a transverse direction being orthogonal to the longitudinal direction, comprising: a chassis; and a liquid-absorbent structure, wherein: the chassis defines a front waist region, a rear waist region and a crotch region of the pants-type wearing article, said crotch region extending between the front and rear waist regions and having concave lateral edges, the chassis has a skin-facing surface and a non-skin-facing surface, the chassis is formed from: a base sheet defining the front and rear waist regions and the crotch region continuously in the longitudinal direction; and front and rear waist sheets spaced apart from each other in the longitudinal direction and defining together with the base sheet the front and rear waist regions; the chassis having: multilayer zones in the front and rear waist regions and at least a portion of the crotch region close to the front waist region, which multilayer zones are composed of the base sheet and the front and rear waist sheets layered with each other; a monolayer zone in a central segment of the crotch region which is formed of the base sheet alone, the base sheet alone forming the outermost non-skin-facing surface in the central segment of the crotch region; and a boundary between the multilayer zone and the monolayer zone extends in the transverse direction; the liquid-absorbent structure being affixed to the skin-facing surface of the chassis and extending in the longitudinal direction at least in the crotch region; and the multilayer zone includes corners each surrounded by the boundary, an intermediate inner end of the front waist region which is located between outer lateral edges of the front waist region extending in the longitudinal direction and extends partially toward the crotch region, a joint region in which the liquid-absorbent structure is bonded to the chassis and the concave lateral edge of the crotch region, wherein the boundary extends across the joint region.
Assigned to Unicharm Corporation, Ehime, Japan.
Filed: 10/10/12
Issued: 11/1/16
A pants-type wearing article having a longitudinal direction and a transverse direction being orthogonal to the longitudinal direction, comprising: a chassis; and a liquid-absorbent structure, wherein: the chassis defines a front waist region, a rear waist region and a crotch region of the pants-type wearing article, said crotch region extending between the front and rear waist regions and having concave lateral edges, the chassis has a skin-facing surface and a non-skin-facing surface, the chassis is formed from: a base sheet defining the front and rear waist regions and the crotch region continuously in the longitudinal direction; and front and rear waist sheets spaced apart from each other in the longitudinal direction and defining together with the base sheet the front and rear waist regions; the chassis having: multilayer zones in the front and rear waist regions and at least a portion of the crotch region close to the front waist region, which multilayer zones are composed of the base sheet and the front and rear waist sheets layered with each other; a monolayer zone in a central segment of the crotch region which is formed of the base sheet alone, the base sheet alone forming the outermost non-skin-facing surface in the central segment of the crotch region; and a boundary between the multilayer zone and the monolayer zone extends in the transverse direction; the liquid-absorbent structure being affixed to the skin-facing surface of the chassis and extending in the longitudinal direction at least in the crotch region; and the multilayer zone includes corners each surrounded by the boundary, an intermediate inner end of the front waist region which is located between outer lateral edges of the front waist region extending in the longitudinal direction and extends partially toward the crotch region, a joint region in which the liquid-absorbent structure is bonded to the chassis and the concave lateral edge of the crotch region, wherein the boundary extends across the joint region.