Back to results
US 6,632,386 B2Granted
In-line heat treatment of homofilament crimp fibers
AssigneeKimberly-Clark Worldwide, Inc.
InventorsJeffrey David Shelley, Kurtis L. Brown
Life of this patent
Estimating the term…
Abstract
Stable, heat-set, helically crimped fibers are economically produced with in-line fabric deposition and heat setting and are uncompacted to retain their loft.
Claims29
A method of making a lofty nonwoven fabric layer, comprising:
- creating a layer of crimped fibers;
- and
- traversing the layer of crimped fibers through a diffuse flow of heated air at a temperature, flow rate, and traversal rate sufficient to set the crimps of the fibers without substantial melt bonding or relaxation of the fibers.
A method of making a lofty nonwoven fabric layer, comprising:
- creating a layer of substantially continuous filament crimped fibers;
- and
- traversing the layer of crimped fibers through a diffuse flow of heated air at a temperature, flow rate, and traversal rate sufficient to set the crimps of the fibers without substantial melt bonding or relaxation of the fibers.
A method of making a lofty nonwoven fabric layer, comprising:
- creating a layer of meltspun crimped fibers;
- and
- traversing the layer of crimped fibers through a diffuse flow of heated air at a temperature, flow rate, and traversal rate sufficient to set the crimps of the fibers without substantial melt bonding or relaxation of the fibers.
Dependencies are inferred from the claim text.