Methods for forming a fluted composite
First Claim
1. A method for making a fibrous layer, comprising:
- refining cellulosic fibers to provide refined fibers, wherein the cellulosic fibers comprise crosslinked cellulosic fibers;
combining the refined fibers with a dispersion medium to provide a fibrous slurry;
depositing the fibrous slurry on a foraminous support to provide a wet composite;
introducing an adsorbent material into said wet composite at a plurality of points, said absorbent material having an absorbent capacity greater than the refined cellulosic fibers; and
drying the wet composite to provide a fibrous layer.
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Abstract
Methods for forming an absorbent fibrous composite containing absorbent material dispersed in bands through the composite and along the composite'"'"'s length are disclosed. The methods generally include depositing a fibrous slurry on a foraminous support to form a web and depositing or injecting absorbent material into the web across its width to provide a web having absorbent material in bands along the composite'"'"'s length. Drying the web provides a fluted absorbent composite. In one embodiment, the method is a wetlaid method and in another embodiment, the method is a foam-forming method. Preferably, the methods are twin-wire forming methods.
104 Citations
19 Claims
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1. A method for making a fibrous layer, comprising:
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refining cellulosic fibers to provide refined fibers, wherein the cellulosic fibers comprise crosslinked cellulosic fibers;
combining the refined fibers with a dispersion medium to provide a fibrous slurry;
depositing the fibrous slurry on a foraminous support to provide a wet composite;
introducing an adsorbent material into said wet composite at a plurality of points, said absorbent material having an absorbent capacity greater than the refined cellulosic fibers; and
drying the wet composite to provide a fibrous layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for making a fibrous layer, comprising:
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refining cellulosic fibers to provide refined fibers, wherein the cellulosic fibers comprise combining the refined fibers with a dispersion medium to provide a fibrous slurry;
moving a first foraminous element in a first path;
moving a second foraminous element in a second path;
passing a first portion of the fibrous slurry into contact with the first foraminous element;
passing a second portion of the fibrous slurry into contact with the second foraminous element;
forming a fibrous web from the slurry by withdrawing liquid from the slurry through the first and second foraminous elements;
introducing and absorbent material into said fibrous web at a plurality of points, said absorbent material having an absorbant capacity greater than the refined cellulosic fibers; and
drying the web provide a fibrous layer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification