Tissue sheets, such as are useful for facial or bath tissue, can be embossed with a fine scale embossing pattern to increase bulk with a minimal loss in strength. The fine scale embossing pattern contains at least about 15 discrete intermeshing embossing elements per square centimeter...http://www.google.fr/patents/US5702571?utm_source=gb-gplus-shareBrevet US5702571 - Soft high bulk tissue
