Preferably the blade is urged against the web with a force not exceeding {HEAD ~ 0.20 kgf} per {TAIL ~ centimeter width} of web 
Preferably the blade is urged against the web with a force not exceeding { HEAD ~ 0.20 kgf } per { TAIL ~ centimeter width } of web
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH