Disposable absorbent article
AssigneeLivedo Corporation
InventorTaichiro Suzuki
Life of this patent
Estimating the term…
Abstract
A disposable absorbent article includes an absorbent mat between a liquid-permeable top sheet and a liquid-impermeable back sheet. The absorbent mat includes a sheet-shaped water-absorbent layer that contains a water-absorbent resin powder but that does not contain pulp fibers; and a fiber assembly layer that contains a water-absorbent resin powder and pulp fibers in this order from a top sheet side. The sheet-shaped water-absorbent layer includes a plurality of water-absorbent resin presence regions in each of which the water-absorbent resin powder is wrapped; and a plurality of water-absorbent resin powder absence regions each being formed between the two adjacent water-absorbent resin powder presence regions.
Claims16
A disposable absorbent article, comprising:
- an absorbent mat between a liquid-permeable top sheet and a liquid-impermeable back sheet, the absorbent mat having a top sheet side immediately juxtaposed to the top sheet, the absorbent mat comprising, in the order recited from the top sheet side, a sheet-shaped water-absorbent layer that contains a water-absorbent resin powder but that does not contain pulp fibers;
- and a fiber assembly layer that contains a water-absorbent resin powder and pulp fibers;
- wherein
- the sheet-shaped water-absorbent layer includes a plurality of water-absorbent resin powder presence regions in each of which the water-absorbent resin powder is wrapped, a plurality of water-absorbent resin powder absence regions each being formed between the two adjacent water-absorbent resin powder presence regions;
- the water-absorbent resin powder contained in the sheet-shaped water-absorbent layer is wrapped in a plurality of nonwoven fabrics;
- the nonwoven fabrics of the sheet-shaped water-absorbent layer are joined to one another in the water-absorbent resin powder absence regions to form sealing portions;
- and
- the sealing portions are configured so as to be kept completely sealed when the sheet-shaped water-absorbent layer absorbs a bodily fluid.
A disposable absorbent article, comprising:
- a top sheet having a first side;
- one or more water-absorbent sheets forming a water-absorbent layer, each of the water-absorbent sheets containing water-absorbent resin powder and not containing pulp fiber, the water absorbent layer having a first water absorbent layer side situated next to the first side of the top sheet and a second water absorbent layer side distal to the first side of the top sheet, wherein the water absorbent sheets comprise:
- a first nonwoven fabric
- a second nonwoven fabric a plurality of water-absorbent resin powder presence regions in each of which the water-absorbent resin powder is wrapped in between the first nonwoven fabric and the second nonwoven fabric,
- a plurality of water-absorbent resin powder absence regions each formed between adjacent water-absorbent resin powder presence regions;
- a fiber assembly layer comprised of one or more fiber assemblages, the fiber assembly layer having a first fiber assembly layer side situated next to the second water absorbent layer side and a second fiber assembly layer side distal to the second water absorbent layer side, the fiber assemblages being comprised of water-absorbent resin powder and pulp fibers;
- and
- a liquid-impermeable back sheet situated next to the second fiber assembly layer side, wherein
- the first nonwoven fabric and the second nonwoven fabric of the water-absorbent sheets are bonded to one another in the water-absorbent resin powder absence regions to form sealing portions, and the sealing portions are configured so as to be kept completely sealed when the sheet-shaped water-absorbent layer absorbs a bodily fluid.
Dependencies are inferred from the claim text.