{HEAD ~ The second layer} is applied to {TAIL ~ at least a portion} of the first layer and contains a second polymer 
is applied to
{ HEAD ~ The second layer } is applied to { TAIL ~ at least a portion } of the first layer and contains a second polymer
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH