Method of making absorbent particles

Details Method of making absorbent particles Method of making absorbent particles

1991-10-07

1992-12-15

Isabella, David

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

604365, A61B 1315

Patent

active

051712377

ABSTRACT:
An absorbent mixture, as made from fibers formed into a fibrous web and a polymerizable, cross-linkable material, in a liquid carrier. The material, when polymerized and cross-linked, results in a superabsorbent polymer. The material, in the liquid carrier, is dispersed within the fibrous web, as dispersed inclusions, and is polymerized and cross-linked in situ, within the fibrous web, so as to form a composite web comprising the fibrous web and the superabsorbent polymer, as dispersed particles, at least some of which are bound to fibers from the fibrous web. The composite web is ground, so as to cause some of the superabsorbent polymers to become particulate while fragments of the superabsorbent polymer remain bound to fibers from the fibrous web. Before the composite web is ground, it may be provided with a fibrous layer or fibrous layers in intimate contact therewith, and also compressed.

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patent: 4540454 (1985-09-01), Pieniak
patent: 4573988 (1986-03-01), Pieniak
patent: 5002814 (1991-03-01), Knack et al.

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