Reinforcement member comprising a structural adhesive on a polyester carrier

A reinforcement member comprising:

• a foamable heat curable structural adhesive on one or more outer surfaces of a hollow carrier member and covering at least 50% of the carrier member to form one ring with the carrier member and connect to the carrier member free of seams, the heat curable structural adhesive foaming to not more than about 200% of its original unexpanded volume, wherein the carrier member has a cross-section that does not comprise a constant thickness over its entire extension;
• wherein the carrier member comprises a fiber-reinforced polyester material having a first aromatic polyester and a second aromatic polyester, and the content of the fibers is within the range of about 65±5 wt.-%, relative to the total weight of the fiber-reinforced polyester material and at least 99 wt.-% of the carrier member is composed of the fiber-reinforced polyester material relative to the total weight of the fiber-reinforced polyester material;
• wherein the fiber-reinforced polyester material has a degree of crystallinity of at least 60%,
• wherein the fibers are associated into bundles with a polyamide terpolymer binder and the fibers have an average length in the range of about 100±50 μm;
• wherein the carrier member has an E-modulus of at least about 15 Gpa that is maintained independent of relative humidity of the ambient air;
• wherein the heat curable structural adhesive forms a non-uniform coating along the carrier member so that an outer shape of the reinforcement member differs from an outer shape of the carrier member.