Process for making multi-ply fibrous structure-containing articles
Articles, for example multi-ply fibrous structure-containing articles such as multi-ply sanitary tissue products, containing two or more fibrous structure plies, and more particularly to multi-ply articles containing two or more fibrous structure plies having a plurality of fibrous elements wherein the articles exhibit improved bulk and absorbent properties compared to known articles and methods for making same, are provided.
1. A process for making a multi-ply fibrous structure-containing article, the process comprising the steps of:
a. embossing a fibrous structure ply by passing the fibrous structure ply through a high definition emboss nip such that the resulting multi-ply fibrous structure-containing article exhibits a Core Height Value of greater than 0.60 mm as measured according to the Surface Texture Analysis Test Method to form an embossed fibrous structure ply comprising an embossment; and
b. bonding the emboss fibrous structure ply with at least one other fibrous structure ply by a water-resistant bond separate from the embossment of the embossed fibrous structure ply to form a multi-ply fibrous structure-containing article, wherein void volume exists between the bonded fibrous structure plies of the multi-ply fibrous structure-containing article.
2. The process according to claim 1 wherein the multi-ply fibrous structure-containing article comprises a plurality of fibrous elements.
3. The process according to claim 2 wherein the fibrous elements comprise a plurality of filaments.
4. The article according to claim 2 wherein the fibrous elements comprise a plurality of fibers.
5. The article according to claim 2 wherein the fibrous elements comprises a plurality of fibers and filaments commingled together.
6. The process according to claim 1 wherein the embossed fibrous structure ply is a co-formed fibrous structure ply.
7. The process according to claim 1 wherein the embossed fibrous structure ply is a wet-laid fibrous structure ply.
8. The process according to claim 1 wherein the wet-laid fibrous structure ply comprises pulp fibers and synthetic staple fibers.
9. The process according to claim 1 wherein the embossed fibrous structure ply is a direct formed fibrous structure ply.
10. The process according to claim 1 wherein the other fibrous structure ply is a co-formed fibrous structure ply.
11. The process according to claim 1 wherein the other fibrous structure ply is a wet-laid fibrous structure ply.
12. The process according to claim 1 wherein the wet-laid fibrous structure ply comprises pulp fibers and synthetic staple fibers.
13. The process according to claim 1 wherein the other fibrous structure ply is a direct formed fibrous structure ply.
14. The process according to claim 1 wherein the multi-ply fibrous structure-containing article exhibits a Core Height Difference Value of greater than 0.50 mm as measured according to the Surface Texture Analysis Test Method.
15. The process according to claim 1 wherein the other fibrous structure ply is a non-embossed fibrous structure ply.
16. The process according to claim 1 wherein the high definition emboss nip comprises a high definition emboss roll having an emboss element having a height of greater than 0.60 mm.
17. The process according to claim 1 wherein the step of bonding comprising passing the embossed fibrous structure ply and other fibrous structure ply through a bonding nip.
18. The process according to claim 17 wherein the bonding nip comprises a thermal bond roll.
19. The process according to claim 1 wherein the water-resistant bond comprises a thermal bond.
20. The process according to claim 1 wherein the water-resistant bond comprises a water-resistant adhesive bond.