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