PRODUCTION OF POLYESTER FIBER FOR RUBBER REINFORCEMENT

摘要

PROBLEM TO BE SOLVED: To obtain a polyester fiber for rubber reinforcement capable of solving problems caused in a production process for the polyester fiber, improving the yarn manufacturing properties and operating efficiency in order to produce the polyester fiber and good in adhesion by applying an epoxy compound thereto for improving an epoxy compound thereto for improving the adhesion to rubber. SOLUTION: This method for producing a polyester fiber for rubber reinforcement comprises applying a treating agent containing an amine compound polyester fiber between the final drawing roller and the relaxing roller and then applying a treating agent containing an epoxy compound to the polyester fiber just after separating from the relaxing roller when the melt-spun polyester fiber with the drawing roller, subsequently carrying out the relaxing treatment with the relaxing roller controlled to <=140 deg.C and then winding the polyester fiber with a winder in the method for producing the polyester fiber for rubber reinforcement.