The extruded coating layer 4 may preferably be in a thickness of 50 μm at {HEAD ~ maximum} in {TAIL ~ view} of working efficiency 
in
The extruded coating layer 4 may preferably be in a thickness of 50 μm at { HEAD ~ maximum } in { TAIL ~ view } of working efficiency
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH