Nonwoven materials having a pattern incorporated into the materials are disclosed. The nonwoven materials may be, for instance, tissue webs, meltspun webs such as meltblown webs or spunbond webs, bonded carded webs, hydroentangled webs, and the like. The pattern may be incorporated into the webs using...http://www.google.es/patents/US7252870?utm_source=gb-gplus-sharePatente US7252870 - Nonwovens having reduced Poisson ratio
