A void fill material (10) can be formed from ordinary scrap cardboard into an interlocking packaging material. Each piece of the material (10) has a primary section (20) defining a primary plane. In a preferred embodiment, a first, second and third finger (22, 24, 26) extend from the primary section...http://www.google.es/patents/US5188880?utm_source=gb-gplus-sharePatente US5188880 - Void fill material
