Process for the preparation of absorbent materials
AssigneeKimberly-Clark Worldwide, Inc.
InventorJay C. Hsu
Life of this patent
Estimating the term…
Abstract
Methods are provided for preparing absorbent material, comprising providing non-broken down and uncut recycled fiber sludge having a moisture content of greater than about 40%; pelletizing said recycled fiber sludge to form wet pellets; and drying said wet pellets. The absorbent material is particularly useful as an industrial-grade waste liquid absorbent and/or an animal litter.
Claims13
A method for preparing an absorbent material comprising:
- (a) providing non-broken down and uncut recycled fiber sludge having a moisture content of greater than about 40% to about 70% by weight;
- (b) pelletizing said recycled fiber sludge to form wet pellets by extruding the recycled fiber sludge through a die utilizing an extrusion force that is tangential to the surface of the die;
- and
- (c) drying said wet pellets.
A method for preparing an absorbent material comprising:
- (a) providing recycled fiber sludge having a moisture content of greater than about 50% to less than about 70% by weight;
- (b) pelletizing said recycled fiber sludge to form wet pellets by extruding the recycled fiber sludge through a die utilizing an extrusion force that is tangential to the surface of the die;
- and
- (c) drying said wet pellets.
A method of absorbing a liquid comprising the step of contacting the liquid with an absorbent material wherein said absorbent material is prepared by a process comprising:
- (a) providing non-broken down and uncut recycled fiber sludge having a moisture content of greater than about 40% to about 70% by weight;
- (b) pelletizing said recycled fiber sludge to form wet pellets by extruding the recycled fiber sludge through a die utilizing an extrusion force that is tangential to the surface of the die;
- and
- (c) drying said wet pellets.
Dependencies are inferred from the claim text.