Disposable diaper
First Claim
Patent Images
1. A disposable diaper comprising:
- a liquid-pervious topsheet;
a liquid-impervious backsheet;
a liquid-absorbent core covered with an absorbent and diffusive sheet and disposed between said topsheet and said backsheet;
said core being formed on a side of said topsheet with at least one groove depressed in a direction from a side of said topsheet toward a side of said backsheet and said groove has a bottom and side walls both covered with said topsheet;
said core containing water-absorbent fibers and superabsorbent polymer particles; and
said water-absorbent fibers and superabsorbent polymer particles being partially disposed between said topsheet and said backsheet along said bottom of said groove.
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Abstract
A disposable diaper is composed of a liquid-permeable topsheet, a liquid-impermeable backsheet and a liquid-absorbent core. The core is formed with grooves each depressed in a direction from the side of a topsheet toward the side of a backsheet. The core contains water-absorbent fibers and superabsorbent polymer particles. These fibers and particles are disposed between portions of the topsheet covering bottoms and side walls of the grooves, and portions of the backsheet respectively opposed to the corresponding portions of the topsheet.
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9 Claims
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1. A disposable diaper comprising:
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a liquid-pervious topsheet;
a liquid-impervious backsheet;
a liquid-absorbent core covered with an absorbent and diffusive sheet and disposed between said topsheet and said backsheet;
said core being formed on a side of said topsheet with at least one groove depressed in a direction from a side of said topsheet toward a side of said backsheet and said groove has a bottom and side walls both covered with said topsheet;
said core containing water-absorbent fibers and superabsorbent polymer particles; and
said water-absorbent fibers and superabsorbent polymer particles being partially disposed between said topsheet and said backsheet along said bottom of said groove. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification