Fibrous structures and methods for making same
Fibrous structures and more particularly to fibrous structures that have a surface containing a surface pattern having a plurality of parallel line elements, such as sinusoidal parallel line elements, and methods for making same are provided.
1. A fibrous structure comprising a surface comprising a surface pattern, wherein the surface pattern comprises a plurality of parallel line elements, wherein at least one parallel line element exhibits a non-constant width along its length, wherein the plurality of parallel line elements are arranged in the surface pattern such that a first zone comprising a series of a first portion of the parallel line elements having the same width is formed and a second zone comprising a series of a second portion of the parallel line elements having the same width different from the width of the first portion of the parallel line elements is formed such that the first and second zones differ in one or more of the following properties: CD stress/strain slopes, CD modulii, and combinations thereof.
2. The fibrous structure according to claim 1 wherein all of the plurality of parallel line elements exhibit a non-constant width along their lengths.
3. The fibrous structure according to claim 1 wherein two or more of the parallel line elements exhibit identical widths along their lengths.
4. The fibrous structure according to claim 1 wherein the surface pattern comprises a series of parallel line elements.
5. The fibrous structure according to claim 1 wherein two or more of the parallel line elements are wet textured.
6. The fibrous structure according to claim 1 wherein two or more of the parallel line elements comprise line element embossments.
7. The fibrous structure according to claim 1 wherein the plurality of parallel line elements comprise a plurality of parallel sinusoidal line elements.
8. The fibrous structure according to claim 7 wherein at least one parallel sinusoidal line element comprises a crest that differs in width than an adjacent transition portion of the sinusoidal line.
9. The fibrous structure according to claim 8 wherein the crest exhibits a constant width along the crest's length.
10. The fibrous structure according to claim 7 wherein at least one parallel sinusoidal line element comprises a trough that differs in width than an adjacent transition portion of the sinusoidal line.
11. The fibrous structure according to claim 10 wherein the trough exhibits a constant width along the trough's length.
12. The fibrous structure according to claim 7 wherein at least one parallel sinusoidal line element comprises a transition portion between an adjacent crest and trough that exhibits a non-constant width along the transition portion's length.
13. The fibrous structure according to claim 7 wherein the at least one parallel sinusoidal line element comprises a crest and a trough that exhibit the same width.
14. The fibrous structure according to claim 7 wherein the plurality of parallel sinusoidal line elements are identical so that they are oriented to form a series of the same region of different parallel line elements.
15. The fibrous structure according to claim 1 wherein the plurality of parallel line elements are substantially oriented in the fibrous structure's machine direction.
16. The fibrous structure according to claim 15 wherein the surface pattern is oriented at an angle of from about 20° to about 70° with respect to the fibrous structure's machine direction.
17. The fibrous structure according to claim 15 wherein the surface pattern is oriented at an angle of from about −10° to about 10° with respect to the fibrous structure's machine direction.
18. The fibrous structure according to claim 17 wherein the first zone exhibits a first CD stress/strain slope and the second zone exhibits a second CD stress/strain slope such that the difference between the greater of the first and second CD stress/strain slopes and the lesser of the first and second CD stress/strain slopes is greater than 1.1 as measured according to the Tensile Strength and Elongation Test Method described herein.
19. A sanitary tissue product comprising a fibrous structure according to claim 1 .
20. A fibrous structure comprising a first zone and a second zone, wherein the first zone exhibits a first CD stress/strain slope and the second zone exhibits a second CD stress/strain slope such that the difference between the greater of the first and second CD stress/strain slopes and the lesser of the first and second CD stress/strain slopes is greater than 1.1 as measured according to the Tensile Strength and Elongation Test Method described herein.