A flexible structure includes a plurality of starch filaments. The structure includes at least a first region and a second region, each of the first and second regions having at least one common intensive property selected from the group consisting of density, basis weight, elevation, opacity, crepe...http://www.google.com/patents/US7029620?utm_source=gb-gplus-sharePatent US7029620 - Electro-spinning process for making starch filaments for flexible structure