Spirally wound single-ply web products having a chemical additive applied to at least one surface exhibit desirable roll bulk characteristics and softness properties. The rolled products can be made from a single-ply tissue web formed according to various processes. Once formed, the web is subjected...http://www.google.de/patents/US7470345?utm_source=gb-gplus-sharePatent US7470345 - Rolled paper product having high bulk and softness
