A fiber reinforced core panel having a first side and an opposing second side. The core panel contains a series of adjacent low density strips having at least three faces and having a length to width aspect ratio of at least 5:1. The longitudinal axis of the low density strips are substantially parallel...http://www.google.fr/patents/US8157937?utm_source=gb-gplus-shareBrevet US8157937 - Method of making a fiber reinforced core panel
