{HEAD ~ The sheet} may include a chemically resistant additive to provide chemical resistance to {TAIL ~ at least part} of the protective membrane 
{ HEAD ~ The sheet } may include a chemically resistant additive to provide chemical resistance to { TAIL ~ at least part } of the protective membrane
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH