wherein the continuous fibers for forming the windings of the layers are enclosed by a matrix made of a thermosetting plastics material or {HEAD ~ a matrix} made of {TAIL ~ a thermoplastic polymer}, and 
made of
wherein the continuous fibers for forming the windings of the layers are enclosed by a matrix made of a thermosetting plastics material or { HEAD ~ a matrix } made of { TAIL ~ a thermoplastic polymer } , and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH