| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a substance, for friction material, which consists of resin-impregnated strings whose fuzzing is prevented, and whose rubber content can be arbitrarily set. There is no problem even if the strings have knots. SOLUTION: This is a method for producing a substance, for friction material, which consists of 'blending rubber'-attached, resin-impregnated strings which were prepared by attaching 'blending rubber' G onto resin-impregnated strings 2 which were prepared by impregnating a thermosetting resin in base fiber bundles. This method uses extruder D which has (1) hole T penetrating from one end to the other and (2) nozzle N adjacent to the opening of the other end of hole T. Resin-impregnated string 4 is passed through hole T, with continuously extruding 'blending rubber' G through nozzle N to form rubber string 3, which is then attached onto resin-impregnated string 2. The inner diameter of hole T can set large, so that resin-impregnated string 2 can pass through extruder D smoothly, and it is possible to adjust the rubber content by the size and number of the opening of nozzle N. |
