US 2010/0063471 A1Published application

Disposable diaper

OwnerHironao Minato, Kaiyo Nakajima +1inventors

InventorsHironao Minato, Kaiyo Nakajima, Naoko Takada

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Abstract

A disposable diaper[[1]] is provided with a skin-contactable sheet piece[[33b]] above a liquid-pervious topsheet[[32]]. The skin-contactable sheet piece[[33b]] is formed with openings extending in a back-and-forth direction through which body waste is guided toward the topsheet[[32]] and both lateral zones[[40]] of the sheet piece[[33b]] on both sides of these openings as viewed in a transverse direction B are provided with elastic members[[37]] attached under tension. Outside the skin-contactable sheet piece[[33b]] as viewed in the transverse direction B, leak-barriers[[58]] are provided and the lateral zones [[40]] of the skin-contactable sheet piece[[33b]] are bonded to the leak-barriers[[58]] along regions defined between proximal edges and free edges of the respective leak-barriers[[58]].

A disposable diaper comprising:

a crotch region having a back-and-forth direction and a transverse direction;
a front waist region extending forward from said crotch region;
a rear waist region extending rearward from said crotch region;
a body fluid absorbent core being provided below a liquid-pervious sheet and above a liquid-impervious sheet in said crotch region;
a skin-contactable sheet piece having an opening allowing body waste to pass therethrough and extending in said back-and-forth direction being provided above said liquid-pervious sheet with opposite end zones of said skin-contactable sheet piece as viewed in said back-and-forth direction fixed to said front waist region and said rear waist region, respectively, so that peripheral zone surrounding said opening is spaced upward from said liquid-pervious sheet to prevent said liquid-pervious sheet from coming in contact with a wearer's skin in said peripheral zone surrounding said opening, wherein said disposable diaper being characterized in that:
said skin-contactable sheet piece comprises a pair of lateral zones extending in said back-and-forth direction on both sides of said openings as viewed in said transverse direction, each of said lateral zones being provided with at least a single elastic member extending along the outer periphery of said opening in said back-and-forth direction and attached under tension to said skin-contactable sheet piece;
said crotch region and said front and rear waist regions are further provided outside said skin-contactable sheet piece as viewed in said transverse direction with leak-barriers extending in said back-and-forth direction, each of said leak-barriers comprising a fixed proximal edge extending in said back-and-forth direction, a deformable free edge extending in parallel to said fixed proximal edge and provided with an elastic member extending in said back-and-forth direction and attached under tension thereto and front and rear fixed ends opposed in said back-and-forth direction;
and
each of said lateral zones of said skin-contactable sheet piece being bonded to associated said leak-barrier in a region defined between said proximal edge and said free edge and also is bonded to said liquid-pervious sheet in a region defined between both ends in said back-and-forth direction.

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Abstract

Claims3