A process for forming a sheet material having a fibrous surface and the sheet material produced thereby; the fibers are produced by deposition of a heated, thermally sensitive material on to a substrate, which is transported at a velocity approximately equal to the velocity of the material being deposited,...http://www.google.com.au/patents/US5618583?utm_source=gb-gplus-sharePatent US5618583 - Sheet material having a fibrous surface and method of making the same
