Disposable diaper with tubular liquid-distributing passage
First Claim
1. A disposable diaper having a front waist region, a rear waist region and a crotch region extending between said front and rear waist regions, said diaper comprising:
- a liquid-absorbent core having an upper surface facing a wearer'"'"'s skin and a lower surface facing away from the wearer'"'"'s skin and extending over said crotch region and further into said front and rear waist regions;
a liquid-pervious first sheet having an upper section covering said upper surface of said core and a lower section covering said lower surface of said core; and
a liquid-impervious second sheet lying outside said lower section of said first sheet;
said upper section of said first sheet extending upwardly, in a vicinity of a longitudinal center line bisecting a transverse dimension of said diaper, from said upper surface of said core so as to define a tubular liquid passage extending in a longitudinal direction along said longitudinal center line; and
said tubular liquid passage extending at least from said front waist region toward said crotch region.
1 Assignment
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Accused Products
Abstract
A disposable diaper includes a liquid absorbent core having upper and lower surfaces and extending over a crotch region and further into front and rear waist regions, a liquid-pervious first sheet having an upper section covering the upper surface of the core and a lower section covering the lower surface of the core, and a liquid-impervious second sheet lying outside the lower section of the first sheet. The core is formed with a slit extending completely through in the thickness direction from the upper surface to the lower surface and extending in the longitudinal direction from the front waist region to the crotch region. The upper and lower sections of the first sheet define a tubular liquid passage extending along a longitudinal center line from the front waist region to the crotch region.
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Citations
20 Claims
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1. A disposable diaper having a front waist region, a rear waist region and a crotch region extending between said front and rear waist regions, said diaper comprising:
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a liquid-absorbent core having an upper surface facing a wearer'"'"'s skin and a lower surface facing away from the wearer'"'"'s skin and extending over said crotch region and further into said front and rear waist regions;
a liquid-pervious first sheet having an upper section covering said upper surface of said core and a lower section covering said lower surface of said core; and
a liquid-impervious second sheet lying outside said lower section of said first sheet;
said upper section of said first sheet extending upwardly, in a vicinity of a longitudinal center line bisecting a transverse dimension of said diaper, from said upper surface of said core so as to define a tubular liquid passage extending in a longitudinal direction along said longitudinal center line; and
said tubular liquid passage extending at least from said front waist region toward said crotch region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A disposable diaper having a front waist region, a rear waist region and a crotch region extending in a longitudinal direction of said diaper between said front and rear waist regions, said diaper comprising:
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a liquid-absorbent core having an upper surface facing a wearer'"'"'s skin and a lower surface facing away from the wearer'"'"'s skin, said core extending in the longitudinal direction from said front waist region to said rear waist region via said crotch region;
an upper liquid-pervious sheet section covering at least said upper surface of said core; and
a lower liquid-impervious sheet disposed below said lower surface of said core;
said upper liquid-pervious sheet section comprising an upwardly convex portion which is located in a vicinity of a longitudinal center line bisecting a transverse dimension of said diaper and upwardly spaced from the upper surface of said core so as to define a passage between said upwardly convex portion and the upper surface of said core. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification