The present invention provides a profiling process which allows for the material sheet to be profiled so that the surface is minimally affected and only slight plastic deformation of the material occurs, and yet uniform three-dimensional structuring takes place. Additionally, the present invention allows...http://www.google.es/patents/US6221299?utm_source=gb-gplus-sharePatente US6221299 - Structuring process that stiffens and protects the surface of thin material webs
Structuring process that stiffens and protects the surface of thin material webs
