The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 05, 2003

Filed:

Apr. 26, 2001
Applicant:
Inventors:

Fung-jou Chen, Appleton, WI (US);

Jeffrey Dean Lindsay, Appleton, WI (US);

Jian Qin, Appleton, WI (US);

Yong Li, Appleton, WI (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 1/315 ; A61F 1/320 ; B01D 3/900 ; B32B 7/12 ;
U.S. Cl.
CPC ...
A61F 1/315 ; A61F 1/320 ; B01D 3/900 ; B32B 7/12 ;
Abstract

Disclosed is a fibrous absorbent structure that is wet stable and has large void volume with a density below the critical density of the fiber employed. In one embodiment, the fibrous absorbent uses open-celled foam technologies to keep the fibrous structure expanded and bonded. In other embodiments, the resulting fibrous structure resembles an open-celled polymeric foam, with fibers serving as struts stabilized by binder material. In another embodiment, the resulting fibrous structure is filled with hydrophilic open-celled foams with the cell size substantially smaller than the fibrous pores. Such a wet-stable, high void volume fibrous absorbent can be used in a disposable product intended for the absorption of fluid such as body fluid, including extensible absorbent articles.


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