Disposable body fluid absorbent article having longitudinal side groove
First Claim
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1. An absorbent article, comprising:
- a liquid-permeable topsheet; and
a liquid-absorbent core having an upper surface covered by said topsheet and a lower surface, said core further having indented regions arranged along two lines extending longitudinally along transversely opposite sides of said core, said lines being spaced apart from each other by a distance gradually increasing from a minimum at a longitudinally middle point thereof to a maximum at longitudinally opposite ends thereof, the lines longitudinally dividing said core into a central region confined between the lines and two side regions each located between one of the lines and the respective one of the transversely opposite sides of said core;
wherein said core comprises a plurality of indentations arranged along said lines, each of said indentations having side walls extending from an opening formed on the upper surface toward the lower surface and ending at a bottom, a portion of said core confined between said bottom and said lower surface defining one of the indented regions; and
said core contains a fibrous component in said indented, central and side regions, and a density of the fibrous component in the indented regions is lower than in the central and side regions.
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Abstract
A disposable body fluid absorbent article includes a liquid-absorbent core. The core is provided in the vicinity of opposite side edges extending in a longitudinal direction with depressed regions tapering from an upper surface toward a lower surface of the core. A density of the core components in the depressed regions is lower then or equal to a density of the core components in the remaining region of the core.
126 Citations
21 Claims
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1. An absorbent article, comprising:
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a liquid-permeable topsheet; and
a liquid-absorbent core having an upper surface covered by said topsheet and a lower surface, said core further having indented regions arranged along two lines extending longitudinally along transversely opposite sides of said core, said lines being spaced apart from each other by a distance gradually increasing from a minimum at a longitudinally middle point thereof to a maximum at longitudinally opposite ends thereof, the lines longitudinally dividing said core into a central region confined between the lines and two side regions each located between one of the lines and the respective one of the transversely opposite sides of said core;
wherein said core comprises a plurality of indentations arranged along said lines, each of said indentations having side walls extending from an opening formed on the upper surface toward the lower surface and ending at a bottom, a portion of said core confined between said bottom and said lower surface defining one of the indented regions; and
said core contains a fibrous component in said indented, central and side regions, and a density of the fibrous component in the indented regions is lower than in the central and side regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An absorbent article, comprising:
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a liquid-permeable topsheet; and
a liquid-absorbent core having an upper surface covered by said topsheet and a lower surface, said core further having indented regions arranged along two lines extending longitudinally along transversely opposite sides of said core, said lines being spaced apart from each other by a distance gradually increasing from a minimum at a longitudinally middle point thereof to a maximum at longitudinally opposite ends thereof, the lines longitudinally dividing said core into a central region confined between the lines and two side regions each located between one of the lines and the respective one of the transversely opposite sides of said core;
wherein said core contains a fibrous component and a non-zero density of the fibrous component in the indented regions is lower than in the central and side regions; and
a plurality of said indented regions are arranged at intervals along each of said lines. - View Dependent Claims (17, 18, 19)
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20. An absorbent article, comprising:
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a liquid-permeable topsheet; and
a liquid-absorbent core having an upper surface covered by said topsheet and a lower surface, said core further having indented regions arranged along two lines extending longitudinally along transversely opposite sides of said core, said lines being spaced apart from each other by a distance gradually increasing from a minimum at a longitudinally middle point thereof to a maximum at longitudinally opposite ends thereof, the lines longitudinally dividing said core into a central region confined between the lines and two side regions each located between one of the lines and the respective one of the transversely opposite sides of said core;
wherein said core comprises a plurality of indentations arranged alone said lines, each of said indentations having side walls extending from an opening formed on the upper surface toward the lower surface and ending at a bottom, a portion of said core confined between said bottom and said lower surface defining one of the indented regions;
said core contains a fibrous component and a density of the fibrous component in the indented regions is lower than in the central and side regions;
the openings of the indentations arranged successively alone each of said lines are contiguous so that to form at least two groves each extending along one of said lines; and
a depth of at least one of the grooves gradually decreases from the longitudinally middle point of the respective line toward the longitudinally opposite ends thereof. - View Dependent Claims (21)
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Specification