发明名称 Disposable diaper
摘要 A disposable diaper includes a chassis, front and rear waist regions, and a crotch region between the front and rear waist regions and a liquid-absorbent structure extending at least in the crotch region. The chassis includes a pair of first leg elastics, and a pair of second leg elastics. The first leg elastics are arranged so as to be rectilinear in the longitudinal direction. The second leg elastics are arranged at a distance from the longitudinal axis as viewed in the transverse direction larger than a distance from the longitudinal axis at which the first leg elastics are arranged and have rectilinear portions extending in the longitudinal direct at least in a portion of the crotch region close to the front waist region and curved portions spaced apart outwardly from each other from the rear waist region side ends of the rectilinear portions.
申请公布号 US9408759(B2) 申请公布日期 2016.08.09
申请号 US201314403742 申请日期 2013.06.03
申请人 UNICHARM CORPORATION 发明人 Sasayama Kenichi;Katsuragawa Kunihiko
分类号 A61F13/15;A61F13/49 主分类号 A61F13/15
代理机构 Hauptman Ham, LLP 代理人 Hauptman Ham, LLP
主权项 1. A disposable diaper having a longitudinal direction and a transverse direction, and a longitudinal axis extending in the longitudinal direction to bisect a dimension in the transverse direction, the disposable diaper comprising: a chassis including a skin-facing surface and a non-skin-facing surface, a front waist region, a rear waist region, a crotch region lying between the front and rear waist regions, and a liquid-absorbent structure extending in the longitudinal direction at least in the crotch region, wherein the chassis further includes a first sheet,a second sheet,a pair of first leg elastics and a pair of second leg elastics, both said pairs being interposed between the first sheet and the second sheet so as to be symmetric about the longitudinal axis,a main portion, anda pair of lateral elastic regions folded so as to face the main portion and attached to only front and rear ends of the main portion in the longitudinal direction, the first leg elastics and the second leg elastics are arranged in the lateral elastic regions, the first leg elastics are arranged at a first distance from the longitudinal axis as viewed in the transverse direction, the second leg elastics are arranged at a second distance from the longitudinal axis as viewed in the transverse direction, the second distance larger than the first distance, the second leg elastics have rectilinear portions extending in the longitudinal direction at least in a portion of the crotch region close to the front waist region, andcurved portions extending from the rectilinear portions toward the rear waist region and curved away from each other in the transverse direction, a portion of the crotch region close to the rear waist region has first non-contractile regions respectively lying between the first leg elastics and the second leg elastics, the rear waist region includes a pair of elastic belt panels extending outwardly from lateral edges of the chassis in the transverse direction; anda waist pocket panel through which inner lateral edges of the respective lateral elastic regions are connected to each other, each of the elastic belt panels is provided with a plurality of first waist elastics spaced apart from each other in the longitudinal direction and extending in the transverse direction, the waist pocket panel is provided with a plurality of second waist elastics spaced apart from each other in the longitudinal direction and extending in the transverse direction, the rear waist region has second non-contractile regions lying between the respective elastic belt panels and the waist pocket panel, and the first non-contractile regions and the second non-contractile regions are contiguous to each other in the longitudinal direction.
地址 Ehime JP