Multi-ply fibrous structures and methods for making same

Patent metadata

Field	Value
Publication number	US-9701101-B2
Application number	US-201414268211-A
Country	US
Kind code	B2
Filing date	May 2, 2014
Priority date	May 19, 2009
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

Embossed multi-ply fibrous structures and methods for making such embossed multi-ply fibrous structures are provided.

First claim

What is claimed is:

1. An embossed multi-ply fibrous structure comprising 10% or less total embossed area, wherein two or more plies of the embossed multi-ply fibrous structure are adhesively bonded together in a face-to-face relationship such that the embossed multi-ply fibrous structure comprises a maximum unbonded area of less than 34 mm×34 mm as determined by the Maximum Unbonded Area Test Method wherein the embossed multi-ply fibrous structure comprises at least one line embossment, the line embossment having at least one discrete region that is void of adhesive and at least one discrete region comprising adhesive, and wherein less than 100% of the line embosses have a length greater than 5 mm.

2. The embossed multi-ply fibrous structure according to claim 1 wherein the maximum unbonded area is oriented in the machine direction.

3. The embossed multi-ply fibrous structure according to claim 1 wherein the maximum unbonded area is oriented in the cross machine direction.

4. The embossed multi-ply fibrous structure according to claim 1 wherein the maximum unbonded area is located immediately adjacent to an edge of the embossed multi-ply fibrous structure.

5. The embossed multi-ply fibrous structure according to claim 1 wherein the embossed multi-ply fibrous structure comprises one or more transverse lines of weakness.

6. The embossed multi-ply fibrous structure according to claim 5 wherein the maximum unbonded area is located immediately adjacent to at least one of the transverse lines of weakness.

7. The embossed multi-ply fibrous structure according to claim 1 wherein the discrete region of adhesive is positioned between the line element embossment's termini.

8. The embossed multi-ply fibrous structure according to claim 1 wherein the line element embossment comprises two discrete regions of adhesive that are positioned at the line element embossment's termini.

9. The embossed multi-ply fibrous structure according to claim 1 wherein the line element embossment comprises at least one discrete region of adhesive positioned between the two discrete regions of adhesive.

10. The embossed multi-ply fibrous structure according to claim 8 wherein the two discrete regions of adhesive are spaced 10 mm or less apart from each other.

11. The embossed multi-ply fibrous structure according to claim 1 wherein the line element embossment exhibits a length of greater than 5 mm.

12. The embossed multi-ply fibrous structure according to claim 1 wherein the embossed multi-ply fibrous structure comprises a plurality of line element embossments wherein at least 50% of the line element embossments exhibit a length of greater than 5 mm.

13. The embossed multi-ply fibrous structure according to claim 1 wherein the embossed multi-ply fibrous structure comprises at least one dot embossment.

14. The embossed multi-ply fibrous structure according to claim 13 wherein the dot embossment comprises at least one discrete region of adhesive that covers less that the entire surface area of the dot embossment.

15. The embossed multi-ply fibrous structure according to claim 1 wherein at least 0.2% of the total embossed area comprises line element embossments and at least 0.2% of the total embossed area comprises dot embossments.

16. The embossed multi-ply fibrous structure according to claim 15 wherein the ratio of line element embossment area to dot embossment area is greater than 1.

17. The embossed multi-ply fibrous structure according to claim 1 wherein the fibrous structure is in the form of a convolutely wound roll comprising transverse lines of weakness that segment the fibrous structure into separable units.

18. The embossed multi-ply fibrous structure according to claim 1 wherein the embossed multi-ply fibrous structure exhibits a ratio of plybond strength to plybond area of the embossed multi-ply fibrous structure of greater than 100 g/in/% plybond area.

Assignees

• Procter & Gamble

Inventors

• Mcneil Kevin Benson
• Buschur Patrick John
• Mellin Andre
• Byrne Thomas Timothy
• Conroy Mark Stephen

Classifications

• B32B2307/718

  Weight, e.g. weight per square meter · CPC title

• B32B37/30 Primary

  Partial laminating · CPC title

• B32B5/26 Primary

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• D21H27/40

  at least one of the sheets being non-planar, e.g. crêped (crêping or corrugating paper B31F) · CPC title

• B32B2250/26

  All layers being made of paper or paperboard · CPC title