Absorbent materials having improved structural stability in dry and wet states and making methods therefor
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United States of America Patent
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May 4, 2004
Grant Date -
Mar 27, 2003
app pub date -
Oct 12, 1998
filing date -
Apr 24, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An absorbent material having substantially improved structural stability in the dry and wet states. The absorbent materials are significantly less susceptible to handling losses of absorbent gelling particles during manufacturing operations. The absorbent material also is not subject to shifting of the absorbent gelling particles during or after swelling by fluids. The absorbent material comprises absorbent gelling particles comprising (a) a water-insoluble absorbent hydrogel-forming polymer; (b) a polycationic polymer bonded to the absorbent gelling particles at the surface thereof; (c) glue microfibers dispersed in the absorbent gelling particles; and (d) a carrier layer bonded to the absorbent gelling particles through the glue microfibers. The invention further relates to a method of making the absorbent materials, and the absorbent articles comprising the absorbent materials.
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