US 5,961,506 AGranted

Absorbent body in an absorbent product

AssigneeMolnlycke AB

InventorsTed Guidotti, Christina Steger, Urban Widlund, Eje Osterdahl

Life of this patent

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Abstract

An absorbent body for use in an absorbent product such as a diaper, incontinence pad, sanitary napkin or the like and which comprises a liquid acquisition portion and a liquid storage portion adjacent thereto. The liquid acquisition portion has a cover layer which covers at least substantial portions of the liquid storage portion and at least one portion which is located at the assumed wetting area of the absorbent body and extends into the underlying liquid storage portion. The material in the liquid acquisition portion has a mean pore size which is greater than the mean pore size of the liquid storage portion. The absorbent body has a high instantaneous absorption, even upon repeated wetting and a low rewetting.

Claims26

Dependent claims

Absorbent body for use in an absorbent product, said absorbent body comprising:

a liquid acquisition portion and a liquid storage portion (12) adjacent thereto,
a first absorbent structure, which has a first effective mean pore size, being arranged in the liquid storage portion and
one or more second absorbent structures, each of said one or more second absorbent structures having a larger effective mean pore size than the first mean pore size, being arranged in the liquid acquisition portion
wherein said liquid acquisition portion comprises at least one well located at the assumed wetting area of the absorbent body, said well extending depth-wise into the underlying liquid storage portion as well as a cover layer which covers at least substantial portions of the liquid storage portion, said one or more second absorbent structures being arranged in said at least one well and said cover layer, and
wherein said at least one well comprises two or more wells distributed over the assumed wetting area of the absorbent body.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/648,137Filed 21 May 1996
Priority: SE 930432029 Dec 1993
Granted: 5 Oct 1999
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61F 13/532
Having a homogeneous composition through the thickness of the pad: inhomogeneous in the plane of the pad
A61F 13/53743
Characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer: characterised by the position of the…
A61F 2013/15422
Characterized by quantifiable properties: density
A61F 2013/530481
Characterised by the absorbing medium: having superabsorbent materials, i.e. highly absorbent polymer gel materials