{HEAD ~ The first polymer} contains a polymer having at least 70% α olefin units and is characterized by {TAIL ~ a melting temperature} lower than the melting temperature of the exterior surface portion of the core 
{ HEAD ~ The first polymer } contains a polymer having at least 70 % α olefin units and is characterized by { TAIL ~ a melting temperature } lower than the melting temperature of the exterior surface portion of the core
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH