A unitary polymer substrate having a plurality of microfibers projecting from a surface is provided. The presence of the microfibers greatly increases the surface area and can impart a cloth-like feel to the surface. The projecting microfibers may have a variety of forms, including frayed-end microfibers,...http://www.google.com.au/patents/US6605332?utm_source=gb-gplus-sharePatent US6605332 - Unitary polymer substrate having napped surface of frayed end microfibers
