Paper making and fiber liberation – Processes and products – Synthetic fiber
Reexamination Certificate
2006-07-11
2006-07-11
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes and products
Synthetic fiber
C162S072000, C162S158000, C162S168100, C162S165000, C008S116100, C008S116400
Reexamination Certificate
active
07074301
ABSTRACT:
The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is obtainable by reacting pulp in the sheet or fluff form with one or more reagents selected from organic molecule having acid and aldehyde functional groups “acid aldehydes.” The invention also relates to a method of producing the cross-linked fiber. The method includes heating the treated cellulosic fibers to promote intrafiber cross-linking. The cross-linked fibers are characterized by having an improved centrifuge retention capacity, fluid acquisition rate, resiliency, absorbent capacity, absorbency under load, and other absorbent properties. The inventive cross-linked fibers are useful in forming absorbent composites, and in particular absorbent cores for use in absorbent articles.
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Chmielewski Harry J.
Hamed Othman A.
McBee Dana B.
Hug Eric
Hunton & Williams LLP
Rayonier Products and Financial Services Company
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