Abstract: A tube including at least one cylindrical element made of a pultruded fibrous material impregnated with a thermoplastic matrix, at least one additional fibrous reinforcement, partially or completely surrounding the cylindrical element(s), the fibers contained in the additional fibrous reinforcement being positioned along an axis different from the longitudinal axis of the cylindrical element, the total content of fibers of the tube being of between 40% and 70% by volume, with respect to the volume of the matrix and of the fibers contained in the tube.

Abstract: A tank for containing a pressurized fluid, including at least one cylindrical element made of a pultruded fibrous material impregnated with a thermoplastic matrix, a first cap placed at one end of at least one cylindrical element closing it, a second cap placed at the other end of at least one cylindrical element, fitted with an orifice intended to make possible the entry and the exit of the fluid, and at least one additional fibrous reinforcement, partially or completely surrounding the cylindrical element(s) and optionally the caps, the fibers contained in the additional fibrous reinforcement being positioned along a different axis from the longitudinal axis of the cylindrical element, the total content of fibers of the tank being of between 40% and 70% by volume, with respect to the volume of the matrix and of the fibers contained in the tank.

Abstract: A multilayer structure, intended for the transportation, for the distribution or for the storage of a gas, in particular hydrogen, including, from the inside toward the outside, N composite reinforcing layer(s), deposited on one another, and being of a fibrous material in the form of continuous fibers which is impregnated by a composition of at least one semicrystalline thermoplastic polymer P1, the M.p. of which, as measured according to ISO 11357-3:2013, is greater than or equal to 150° C., or at least one amorphous thermoplastic polymer, the Tg of which is greater than 80° C., N being of from 1 to 2000 layers, and an outer sealing layer (1) cohesive with the outermost composite reinforcing layer (2) and including a composition of the at least one thermoplastic polymer P1, the composition of the outer sealing layer (1) resulting from at least the outermost composite reinforcing layer (2) cohesive with the sealing layer.

Abstract: A method for preparing composite parts, including a step of depositing at least one band of fibrous material impregnated with a thermoplastic polymer on a substrate, by means of a main heating system selected from the following two systems: a preheating system (1) and a heating system (2), in combination with at least one secondary heating system selected from: a heating system (3), a post-heating system (4), a heating system (5), and a preheating system (6), or by means of the two main heating systems (1) and (2), the substrate being previously devoid of any deposited band or comprising at least one band n?1 of said fibrous material, the thermoplastic polymer being amorphous, with a Tg such that Tg?80° C., or semicrystalline, with a Tm?150° C.

Abstract: Impregnation of a fibrous material made from continuous fibres with a thermoplastic polymer matrix, the fibrous material comprising a thermoplastic sizing polymer and, before impregnation, an initial width. The method comprises an expansion step which is carried out by means of at least two tensioning members (E) and a heating system SC for heating the tensioning members and/or the fibrous material, the expansion being from 1.5 to 5 times the initial width. The expanded fibrous material is cooled below the Tg of the thermoplastic sizing polymer by means of a cooling system before being brought into contact with the thermoplastic polymer matrix.