US Patent 7208429 - Nanoparticles for toilet tissues or paper towels

http://www.freepatentsonline.com/7208429.html

This patent from Procter+Gamble teaches applying nanostructured material toward the achievement of better toilet paper. Claims 1 and 13 read:

1. A finished fibrous structure comprising a solid additive comprising a nanoparticle additive wherein the solid additive is present on a surface of the finished fibrous structure at a greater level by weight than within the finished fibrous structure and wherein the finished fibrous structure exhibits a stretch at peak load of at least about 10%.

13. A finished fibrous structure comprising a solid additive comprising a nanoparticle additive wherein the solid additive is present on a surface of the finished fibrous structure at a greater level by weight than within the finished fibrous structure and wherein the finished fibrous structure exhibits a density of less than about 0.10 g/cm^3.