first only the area of {HEAD ~ said sheet} which will become {TAIL ~ the outside surface} of said closed end is coated with a flexible coating composition which gives a matte finish, minimizing specular reflectance of light from said area, 
become
first only the area of { HEAD ~ said sheet } which will become { TAIL ~ the outside surface } of said closed end is coated with a flexible coating composition which gives a matte finish , minimizing specular reflectance of light from said area ,
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL 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 OTH OTH OTH OTH OTH