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AssigneeKimberly-Clark Worldwide, Inc.
InventorsRichard Norris Dodge, II, Clifford Jackson Ellis, Connie Lynn Hetzler, Eric Scott Kepner, Sylvia Bandy Little, Lawrence Howell Sawyer
Estimating the term…
There is provided a surge material for personal care products comprising a layered structure of at least one relatively high permeability layer on a top side toward a wearer and at least one relatively low permeability layer where the structure has a capillary tension range between about 1 and 5 cm with a differential capillary tension of at least about 1 cm from top to bottom. The surge material should have a high permeability layer with a permeability of at least 1000 Darcys and a low permeability layer with a permeability of less than 1000 Darcys. The surge material should also have a said high permeability layer which has a permeability of at least 250 Darcys greater than the low permeability layer. Such a layered structure should have a first insult run-off value of at most 30 ml from a 100 ml insult delivered at 20 ml/second. Such a surge material is useful in personal care products like diapers, training pants, absorbent underpants, adult incontinence products, feminine hygiene products and the like.
A surge material for personal care products comprising a layered structure of at least one relatively high permeability layer on a top side toward a wearer and at least one relatively low permeability layer, wherein said structure has a capillary tension range between about 1 and 5 cm with a differential of at least about 1 cm from top to bottom.
The surge material of claim I wherein said high permeability layer has a permeability of at least 1000 Darcys and said low permeability layer has a permeability of less than 1000 Darcys.
A surge material for personal care products comprising a layered structure of at least one relatively high permeability layer on a side toward a wearer and at least one relatively low permeability layer, wherein said relatively high permeability layer has a capillary tension range between about 1 and 2.5 cm and said relatively low permeability layer has a capillary tension range between about 2.5 and 5 cm.
A surge material for personal care products comprising a layered structure of at least one relatively high permeability layer on a side toward a wearer and at least one relatively low permeability layer, wherein said relatively high permeability layer is comprised of conjugate sheath/core microfibers and has a permeability at least 500 Darcys greater than said low permeability layer and a capillary tension range between about 1 and 2 cm, and said relatively low permeability layer comprises homopolymer microfibers and has a capillary tension range between about 2.5 and 5 cm, wherein at least one of said layers has an orientation of at least 3:1 in MD:CD.
Dependencies are inferred from the claim text.