Patterned fibrous substrates
Patterned fibrous substrates having a plurality of individual fibers, a first region, and a second region are provided. The patterned fibrous substrates have a plurality of individual fibers of the first region having a first diameter and a plurality of individual fibers of the second region have a second diameter, wherein the first diameter is less than the second diameter. The individual fibers of the first region and the individual fibers of the second region are substantially free of bonds, other than primary bonds. The first region has a first C.I.E. L* score, and the second region has a second C.I.E. L* score, according to the Color Test Method. The first C.I.E. L* score is different than the second C.I.E. L* score.
1 . A patterned fibrous substrate comprising a plurality of individual fibers, a first region, and a second region;
wherein a plurality of individual fibers of the first region have a first diameter according to the Fiber Diameter Test Method, wherein a plurality of individual fibers of the second region have a second diameter according to the Fiber Diameter Test Method, and wherein the first diameter is less than the second diameter;
wherein the individual fibers of the first region have an average aspect ratio of between about 1 and about 1.28, according to the Aspect Ratio Test Method;
wherein the individual fibers of the second region have an average aspect ratio of between about 1.3 and about 3.5, according to the Aspect Ratio Test Method;
wherein the first region has a first C.I.E. L* score, according to the Color Test Method;
wherein the second region has a second C.I.E. L* score, according to the Color Test Method;
and wherein the first C.I.E. L* score is different than the second C.I.E. L* score.
2 . The patterned fibrous substrate of claim 1 , further comprising a plurality of primary bonds disposed in the first region and the second region.
3 . The patterned fibrous substrate of claim 2 , wherein the patterned fibrous substrate is free of bonds other than the plurality of primary bonds.
4 . The patterned fibrous substrate of claim 1 , wherein the patterned fibrous substrate is formed from a single nonwoven web.
5 . The patterned fibrous substrate of claim 1 , wherein the patterned fibrous substrate consists of a single fiber type.
6 . The patterned fibrous substrate of claim 1 , wherein the first region does not overlap the second region.
7 . The patterned fibrous substrate of claim 1 , further comprising a plurality of primary bonds disposed in the first region and the second region, wherein the plurality of fibers of the fibrous substrate are substantially unattached outside of the plurality of primary bonds.
8 . The patterned fibrous substrate of claim 1 , wherein an absolute difference between the first C.I.E. L* score and the second C.I.E. L* score (ΔL*) is greater than 4.
9 . The patterned fibrous substrate of claim 1 , wherein the individual fibers comprise mono-component polypropylene fibers.
10 . The patterned fibrous substrate of claim 1 , wherein the patterned fibrous substrate consists of mono-component polypropylene fibers.
11 . The patterned fibrous substrate of claim 1 , wherein the individual fibers comprise bi-component fibers having a sheath/core structure, wherein a sheath of the fibers comprises polyethylene, and wherein a core of the fibers comprises polypropylene and/or polyester.
12 . The patterned fibrous substrate of claim 11 , wherein the core of the fibers comprises a pigment.
13 . The patterned fibrous substrate of claim 1 , wherein the fibrous substrate is free of apertures.
14 . The patterned fibrous substrate of claim 1 , wherein the first region has a first opacity, according to the Opacity Test Method, wherein the second region has a second opacity, according to the Opacity Test Method, and wherein the first opacity is different than the second opacity.
15 . The patterned fibrous substrate of claim 14 , wherein a difference between the first opacity and the second opacity is between about 5% and about 60%, according to the Opacity Test Method.
16 . An absorbent article comprising the patterned fibrous substrate of claim 1 , wherein the patterned fibrous substrate forms at least a portion of one of: an outer cover, a topsheet, a front ear, a back ear, a front belt, a back belt, a waistband, and a fastener landing zone.
17 . A laminate comprising the patterned fibrous substrate of claim 1 , wherein the laminate comprises a second substrate, wherein a portion of the second substrate has a second substrate C.I.E. L* score, according to the Color Test Method; and wherein the first C.I.E. L* score is greater than the second substrate C.I.E. L* score.
18 . The laminate of claim 17 , wherein the second substrate is a film.
19 . A patterned fibrous substrate comprising a plurality of individual fibers, a first region, and a second region;
wherein a plurality of individual fibers disposed in the first region have a first diameter according to the Fiber Diameter Test Method, wherein a plurality of individual fibers disposed in the second region have a second diameter according to the Fiber Diameter Test Method, and wherein the first diameter is less than the second diameter;
wherein the individual fibers of the first region have an average aspect ratio of between about 1 and about 1.28, according to the Aspect Ratio Test Method;
wherein the individual fibers of the second region have an average aspect ratio of between about 1.3 and about 3.5, according to the Aspect Ratio Test Method;
wherein the first region has a first opacity, according to the Opacity Test Method, wherein the second region has a second opacity, according to the Opacity Test Method, and wherein the first opacity is different than the second opacity.
20 . The patterned fibrous substrate of claim 19 , wherein a difference between the first opacity and the second opacity is between about 5% and about 60%, according to the Opacity Test Method.
21 . The patterned fibrous substrate of claim 20 , wherein the second opacity is greater than the first opacity.
22 . The patterned fibrous substrate of claim 19 , wherein the plurality of fibers consist of a single fiber type.
23 . The patterned fibrous substrate of claim 19 , wherein the plurality of fibers comprise mono-component polypropylene fibers.
24 . The patterned fibrous substrate of claim 19 , wherein the plurality of fibers comprise bi-component fibers having a sheath/core structure, wherein a sheath of the fibers comprises polyethylene, and wherein a core of the fibers comprises polypropylene.
25 . The patterned fibrous substrate of claim 24 , wherein the core of the fibers comprises a pigment.
26 . An absorbent article comprising the patterned fibrous substrate of claim 19 ,
wherein the patterned fibrous substrate forms at least a portion of one of: an outer cover, a topsheet, a front ear, a back ear, a front belt, a back belt, a waistband, and a fastener landing zone.