Absorbent layer structure
AssigneeSCA Hygiene Products AB
InventorTed Guidotti
Life of this patent
Estimating the term…
Abstract
An absorbent layer structure for use as an absorbent body in an absorbent article includes a first surface layer having cellulose fluff pulp, a second surface layer having cellulose fluff pulp, and an inner layer arranged between the surface layers having a mixture of cellulose fluff pulp and 5-90% by weight superabsorbent material, the cellulose fluff pulp in the surface layers having a mat strength which is lower than the mat strength in the inner layer by at least 1 N measured at a weight per unit area of 300 g/m2 and a bulk of 4.5 cm3/g or less and preferably a mat strength which is lower than the mat strength in the inner layer by at least 2 N measured at a weight per unit area of 300 g/m2 and a bulk of 4.5 cm3/g or less.
Claims23
An absorbent article including an absorbent layer structure for use as an absorbent body in an absorbent article, the absorbent layer structure comprising:
- a first surface layer comprising cellulose fluff pulp;
- a second surface layer comprising cellulose fluff pulp;
- and
- an inner layer arranged between the first and second surface layers, the inner layer comprising a mixture of cellulose fluff pulp and 5-90% by weight superabsorbent material;
- wherein the cellulose fluff pulp in the first and second surface layers has a mat strength which is lower than the mat strength of the inner layer by at least 1 N when all three layers are measured at a weight per unit area equal to or about 300 g/m2 and a bulk equal to or about 4.5 cm3/g, and the weight per unit area of each measured layer is within 10% of each layer and the bulk of each measured layer is within 10% of each layer, and
- the cellulose fibers in at least one of the surface layers have a coating of a substance which reduces the number of fiber-fiber bonds in the cellulose fluff pulp.
Dependencies are inferred from the claim text.