| 摘要 |
PURPOSE: To obtain a roller of good extrusion properties and superior resistance to crack at the time of molding. CONSTITUTION: A copolymer of tetrafluoroethylene and perfluoroethyl vinyl ether or a copolymer of tetrafluoroethylene and perfluoromethylvinyl ether is used as fluorine resin for a roller, and the outer periphery of a core bar 2 is coated with an elastic body layer 3 such as silicone rubber, over the outer periphery of which fluorine resin of thickness of 0.1mm or less is applied for coating. |
