{HEAD ~ A coinjection molding system} for injecting {TAIL ~ skin and core material} into a mold cavity 
for injecting
{ HEAD ~ A coinjection molding system } for injecting { TAIL ~ skin and core material } into a mold cavity
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH