| 摘要 |
PROBLEM TO BE SOLVED: To manufacture an oil-containing pellet for obtaining a plastic molding in which lubricating oil is continuously stably oozed out from a surface of the molding and to manufacture a retainer for a rolling bearing in which lubricating oil is oozed out at continuously stable speed from a surface of the retainer. SOLUTION: The method for manufacturing an oil-containing resin comprises the steps of previously melt kneading synthetic resin and lubricating oil in the case of melt kneading the resin such as polyamide resin or the like, fiber- like oil conductive material such as solid glass fiber or hollow polyester fiber and lubricating oil, then adding the fiber-like oil conductive material to the mixture, and melt kneading them. This melt kneading can adopt melt kneading using a biaxial extruder. A method for manufacturing a retainer for a rolling bearing comprises the step of injection molding an oil-containing pellet. |
