| 摘要 |
PURPOSE: To obtain a roller having good extruding characteristics at the time of molding and an excellent resistance to cracking. CONSTITUTION: In a roller, an outer periphery of a core 2 is covered with an elastic body layer 3 of a silicone rubber or the like, and the outer periphery thereof is further covered with a fluororesin of 0.1mm or less thickness. As the fluororesin, a terpolymer of tetrafluoroethylene, hexafluoropropylene, and perfluoroalkyl vinyl ether is used. |
