| abstract |
(57) [Summary] [Object] An object of the present invention is to fabricate a braided fiber or a polyester fiber or an aramid fiber, which has been RFL-bonded, into a blade or a spiral shape without deteriorating the bonding performance with rubbers. It is to reduce the frictional force of and improve workability. [Structure] After treating the polyester fiber with a first treatment agent containing a polyepoxide compound and a rubber latex, A method of subsequently treating with a second treatment agent containing a special chlorophenol compound and resorcinol-formalin rubber latex (RFL), wherein the special chlorophenol compound contained in the second treatment agent contains parachlorophenol and resorcinol. Compounds co-condensed with formaldehyde, which are represented by a specific structural formula and have a specific molecular weight distribution profile mainly composed of trinuclear (I), pentanuclear (II), and 7-nuclear (III) And 5 to 20% by weight of polytetrafluoroethylene (PT) based on the RFL solid content. A method for treating fibers, wherein an aqueous dispersion of FE) is added to the second treatment agent. |