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