An extruded plastics material net bag, formed by a tubular body which in the flattened state defines two superimposed sheets, in each of which there are two reinforced longitudinal lateral web portions close to the lateral edges of the bag and a reinforced longitudinal central web portion substantially...http://www.google.fr/patents/US4753538?utm_source=gb-gplus-shareBrevet US4753538 - Net bag of extruded plastics material
