Absorbent articles that provide warmth
AssigneeKimberly-Clark Worldwide, Inc.
InventorRoger Quincy
Life of this patent
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Abstract
An absorbent article that contains a warmth-providing substrate is provided that is capable of generating heat upon activation. Specifically, the substrate is coated with an exothermic composition that may be formed from a variety of different components, including oxidizable metals, carbon components, binders, electrolytic salts, and so forth. The oxidizable metal is capable of undergoing an exothermic, electrochemical reaction in the presence of oxygen and water to generate heat. In some cases, the exothermic composition is anhydrous, i.e., generally free of water, to reduce the likelihood of premature activation prior to use.
Claims30
An absorbent article that comprises a substantially liquid-impermeable layer, a liquid-permeable layer, and an absorbent positioned between said substantially liquid-impermeable layer and said liquid-permeable layer, the absorbent article further comprising an exothermic coating that is formed from an oxidizable metal powder and is capable of activation in the presence of oxygen and moisture to generate heat, wherein said exothermic coating is generally free of water prior to activation.
A personal care absorbent article that comprises:
- a liquid-permeable liner;
- a breathable outer cover;
- an absorbent positioned between said liner and said outer cover;
- and
- optionally, a ventilation layer positioned between said breathable outer cover and said absorbent;
- wherein said breathable outer cover, said ventilation layer, or both, comprise an exothermic coating that is formed from an oxidizable metal powder and is capable of activation in the presence of oxygen and moisture to generate heat, wherein said exothermic coating is generally free of water prior to activation.
A diaper that comprises:
- a liquid-permeable bodyside liner;
- a breathable outer cover;
- an absorbent positioned between said liner and said outer cover;
- a surge layer positioned between said liner and said absorbent;
- and
- optionally, a ventilation layer positioned between said outer cover and said absorbent;
- wherein said breathable outer cover, said ventilation layer, or both, comprise an exothermic coating that is formed from an oxidizable metal powder, carbon component, binder, and metal halide, and wherein said exothermic coating is capable of activation in the presence of oxygen and moisture to generate heat, wherein said exothermic coating is generally free of water prior to activation.
Dependencies are inferred from the claim text.