An apparatus for continuously forming a cyclically contoured and densified air-laid fibrous web having alternately spaced relatively high basis weight narrow regions and relatively low basis weight wide regions. This web can be severed by spaced transverse cuts into uniform, contoured articles such as...http://www.google.es/patents/US4388056?utm_source=gb-gplus-sharePatente US4388056 - Apparatus for continuously making an air-laid fibrous web having patterned basis weight distribution
Apparatus for continuously making an air-laid fibrous web having patterned ...
