Stable disposable absorbent structure
AssigneePersonal Products Company
InventorHeinz A. Pieniak
Life of this patent
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Abstract
A disposable absorbent product is provided in the form of a layered structure. A first fibrous layer of resilient fibers contains superabsorbent and is superposed on a layer of hydrophilic material. The layers are unpressed and slit followed by extrusion to open the slits to provide apertures. The structure is used as the absorbent core in diapers, sanitary napkins, wound dressings and the like.
Claims11
An absorbent product comprising a layered structure, which structure is comprised of a first fibrous layer substantially of resilient fibers and containing at least about 10% by weight superabsorbent and a second layer of hydrophilic porous material, said layers being substantially coextensive superposed one on the other and subjected to at least about 200 psi pressure in the presence of from about 10% to about 50% moisture to form said structure, said structure being provided with longitudinally parallel slits in staggered rows, said slits being at least about 0.5 inch in length, said rows being from about 0.1 to about 0.5 inches apart, said slit structure being extended transversely to provide an apertured structure, and said apertured layered structure being sandwiched between a liquid-impermeable barrier and a liquid-permeable facing.
Dependencies are inferred from the claim text.