Water-absorbent structure and process for making the same

Details Water-absorbent structure and process for making the same Water-absorbent structure and process for making the same

2006-11-14

2006-11-14

Xu, Ling (Department: 1775)

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

C428S119000, C428S034200, C428S311110, C422S310000, C422S310000, C422S310000

Reexamination Certificate

active

07135215

ABSTRACT:
A water-absorbent structure comprises an assembly of thermoplastic synthetic fibers, cellulose-based fibers, super-absorbent polymer and water-pervious sheets wrapping these components together. The assembly is a honeycomb construction having a plurality of through-holes and normally in a compressed state. Upon water permeation into the water-absorbent structure, the super-absorbent polymer is swollen and softened and the assembly is swollen so that the through-holes restore the initial state before the assembly has been compressed.

REFERENCES:
patent: 4500315 (1985-02-01), Pieniak et al.
patent: 5547747 (1996-08-01), Trokhan et al.
patent: 5643238 (1997-07-01), Baker
patent: 2003/0104748 (2003-06-01), Brown et al.
patent: 2003/0135181 (2003-07-01), Bednarz et al.
patent: WO 98/36720 (1998-08-01), None
Patent Abstracts of Japan vol. 0142, No. 61 (C-0725), Jun. 6, 1990 & JP 2 074254 A (Uni-Charm Corp), Mar. 14, 1990.

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