公开(公告)号：US06572735B1

公开(公告)日：2003-06-03

申请号：US09643803

申请日：2000-08-22

申请人： Palani Raj Ramaswami Wallajapet ,  Ronald Lee Edens ,  Cheryl Ann Mocadlo ,  Sheng-Hsin Hu ,  Dmitry Yavich ,  David Michael Kale

发明人： Palani Raj Ramaswami Wallajapet ,  Ronald Lee Edens ,  Cheryl Ann Mocadlo ,  Sheng-Hsin Hu ,  Dmitry Yavich ,  David Michael Kale

IPC分类号： D21F1100

CPC分类号： D21H21/22 ,  A61L15/425 ,  A61L15/60 ,  D21H21/20

摘要： A wet-formed composite defining latent voids and macro-cavities, the wet-formed composite having a basis weight greater than about 100 grams per square meter and a density of about 0.06 grams per cubic centimeter or more. The wet-formed composite comprises fibers and superabsorbent material, with the superabsorbent material present in an amount of about 10 dry weight percent or less, specifically about 5 dry weight percent or less, and particularly about 2 dry weight percent or less, but more than 0, based on the total dry weight of fibers and superabsorbent material present in the wet-formed composite. By virtue of the superabsorbent material having been allowed to swell and then shrink during the making of the wet-formed composite, macro-cavities are created. Densification compresses the macro-cavities. The resulting composite expands upon wetting and exhibits good absorbency properties.