Thus, releasing {HEAD ~ the synthetic resin sheet} from {TAIL ~ the embossing surface} and forming an undercut in the synthetic resin sheet 
Thus , releasing { HEAD ~ the synthetic resin sheet } from { TAIL ~ the embossing surface } and forming an undercut in the synthetic resin sheet
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH