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