| PATENT CLAIMS |
Drafting rubber roller which is used as a top roller set on a metal roller to make a fiber bundle into yarn between said rubber roller & metal roller, characterized in that rubber roller is soft rubber roller having an outer surface, a rubber hardness 60-80 degrees, & having a thin amorphous quartz membrane provided on at least portion of outer surface, said amorphous quartz membrane being formed by heating an organic solvent soln of perhydropolysilazane, said membrane having a thickness 0.05-5 microns
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