A method of providing papermaking fibers with durable curl comprising: a) introducing papermaking fiber into a rotatable drum adapted for operation at elevated pressure; b) rotating the drum containing the papermaking fiber while maintaining: i) the fiber in aqueous dispersion having a consistency of...http://www.google.es/patents/US7390378?utm_source=gb-gplus-sharePatente US7390378 - Method of curling fiber and absorbent sheet containing same
Method of curling fiber and absorbent sheet containing same