Patent ID: 8883283

Claim:
A laminated product that forms a deformable cellular structure, comprising: an upper band and a lower band both oriented in a same main direction, the upper and lower bands comprise fibres embedded in a resin matrix that are unidirectional, oriented parallel to a direction X, wherein the resin matrix is a thermosetting resin that is a vinyl ester resin; and between the two bands and connecting the upper band and the lower band in zones referred to as anchoring zones, a series that extends in the direction X of cylindrical structures, referred to as connecting cylindrical structures, that are non-touching in the direction X and are not connected together in the direction X, wherein each connecting cylindrical structure comprises a plurality of elementary cylinders having their generatrix oriented along an axis Y perpendicular to the direction X, said elementary cylinders being fitted one inside the other and interconnected to one another in each anchoring zone, wherein the elementary cylinders are concentric cylinders, wherein the elementary cylinders are composite cylinders comprising glass fibres embedded in the resin matrix, and wherein an average distance d, measured in the direction X, between two consecutive connecting cylindrical structures is such that a ratio d/D is between 0.10 and 0.50, where D is an outer diameter of the connecting cylindrical structures.