{HEAD ~ The sheet} 24 may either be a plain thermoplastic material or {TAIL ~ a thermoplastic material} reinforced with fibers 
{ HEAD ~ The sheet } 24 may either be a plain thermoplastic material or { TAIL ~ a thermoplastic material } reinforced with fibers
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH