A process for applying a chemical additive, such as a softener, to a fibrous web comprises the steps of: providing a fibrous web having a first side and a second side opposite to the first side; providing a chemical additive; depositing the chemical additive only to the first side of the fibrous web;...http://www.google.de/patents/US6126784?utm_source=gb-gplus-sharePatent US6126784 - Process for applying chemical papermaking additives to web substrate
