Apparatus for initiating compressive treatment of a running length of flexible material wherein the material is confined against a moving drive surface by a confining surface and then retarded by a retarding surface located downstream of the confining surface and spaced from the drive surface. The material...http://www.google.com.au/patents/US3975806?utm_source=gb-gplus-sharePatent US3975806 - Apparatus for compressively treating flexible sheet materials
