Process for the Manufacture of a Leaktight Bladder of a Type IV Tank, and Type IV Tank

摘要

The present invention relates to a process for the manufacture of a bladder ( 2 ) of thermoplastic polymer for leaktightness to the gases of a type IV composite tank ( 1 ) and to a type IV tank ( 1 ) capable of being obtained by this process. The process of the invention comprises a stage of polymerization of a precursor monomer of said thermoplastic polymer to give said thermoplastic polymer in a rotating mold heated to a working temperature greater than or equal to the melting point of said monomer and lower than the melting point of said polymer, so as to form said bladder ( 2 ) by polymerization of said monomer coupled to rotomolding and without melting of the thermoplastic polymer obtained.