A machine and method for treating a web by longitudinal compressive action, by pressing a web against a driven roll to drive it into a treatment cavity bounded by the roll and an overlying surface, followed by application of retarding forces by extrusion in which the extrusion orifice is arranged with...http://www.google.fr/patents/US4894196?utm_source=gb-gplus-shareBrevet US4894196 - Method and apparatus for longitudinal compressive treatment of webs
Method and apparatus for longitudinal compressive treatment of webs
