While {HEAD ~ the tips} of the heat emission part 20 protrudes from {TAIL ~ the surface} of the support part 30, they do not protrude far enough to interfere with the insertion into the roller 40 
protrudes from
While { HEAD ~ the tips } of the heat emission part 20 protrudes from { TAIL ~ the surface } of the support part 30 , they do not protrude far enough to interfere with the insertion into the roller 40
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH