A method and apparatus for monitoring and controlling the longitudinal and lateral deformation and the lateral position of a moving web of plastic film material which is laminated to a moving web of paper material to form a laminated composite....http://www.google.es/patents/US4610739?utm_source=gb-gplus-sharePatente US4610739 - Method and device for providing longitudinal and lateral stretch control in laminated webs
Method and device for providing longitudinal and lateral stretch control in ...