Biodegradable absorbent articles
AssigneeEveryone's Earth Inc.
InventorsNicole M. Richards, Thomas C. Kallish
Life of this patent
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Abstract
A biodegradable, disposable absorbent article, such as a diaper, having a non-woven inner layer of natural fibers and a non-woven outer layer of natural fibers and a treatment applied to at least one surface thereof. The treatment includes at least one compound selected from the group consisting of waxes, urethanes, silicones, fluorocarbons, and non-fluorochemical repellants. The absorbent article has a core of natural fibers or fibrous material, and optionally polyacrylate superabsorbent particles, positioned between the inner layer and the outer layer. The article may contain polylactic acid films between the layers.
Claims20
A disposable absorbent article comprising:
- a non-woven inner layer consisting of natural fibers;
- a hydrophobic non-woven outer layer, the hydrophobic non-woven outer layer consisting of:
- natural fibers treated with an internal hydrophobic agent;
- and
- an external hydrophobic surface treatment applied to a surface of the non-woven outer layer, the external hydrophobic surface treatment selected from the group consisting of waxes, urethanes, silicones, fluorocarbons, non-fluorochemical repellants applied to at least one surface thereof;
- a core comprising natural fibers or fibrous material positioned between the inner layer and the outer layer, and
- an acquisition/distribution layer comprised of polylactic acid between the non-woven inner layer and the core.
A biodegradable diaper comprising:
- a non-woven inner layer comprising cotton;
- a hydrophobic non-woven outer layer, the hydrophobic non-woven outer layer comprising:
- cotton treated with an internal hydrophobic agent, wherein the internal hydrophobic agent is a dendrimer wax;
- and
- an external hydrophobic surface treatment applied to a surface of the non-woven outer layer, the external hydrophobic surface treatment selected from the group consisting of waxes, urethanes, silicones, fluorocarbons, and non-fluorochemical repellants and combinations thereof;
- and
- an absorbent core comprising cotton and polyacrylate superabsorbent particles positioned between the inner layer and the outer layer.
A disposable absorbent article, comprising:
- a non-woven inner layer comprising natural fibers;
- a hydrophobic non-woven outer layer, the hydrophobic non-woven outer layer comprising:
- natural fibers treated with an internal hydrophobic agent;
- and
- an external hydrophobic surface treatment applied to a surface of the non-woven outer layer, the external hydrophobic surface treatment selected from the group consisting of waxes, urethanes, silicones, fluorocarbons, non fluorochemical repellants applied to at least one surface thereof;
- and
- a core comprising natural fibers or fibrous material positioned between the non-woven inner layer and the non-woven outer layer, the core comprising:
- a corrugated absorbent structure of absorbent material comprising natural fibers or fibrous material, the corrugated absorbent structure having a plurality of alternating peaks and valleys, the plurality of alternating peaks and valleys providing a fluid retainment space in the core,
- wherein the treatment is applied to the non-woven outer layer at 100% to 200% by weight add on.
Dependencies are inferred from the claim text.