METHOD FOR PRODUCING FIBER FOR RUBBER REINFORCEMENT

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a rubber-reinforcing polyester fiber having excellent process-passing performance in twisting step, treating step and forming step without causing the processing troubles such as scum formation and stably giving a flexible treated cord having excellent adhesiveness to a rubber.

SOLUTION: An oily solution containing an amine compound is applied to a spun yarn obtained by the melt-spinning of a polyester fiber, the coated fiber is hot-drawn and a treating liquid containing an epoxy compound is applied to the product. The treating liquid comprises (A) 5-60 pts.wt. of an epoxy compound having ≥4 epoxy groups in one molecule and (B) 40-95 pts.wt. of an epoxy compound having 2-3 epoxy groups in one molecule, and the amount of applied solid component of the epoxy compound is 0.01-0.5 wt.% based on the fiber yarn. Preferably, the fiber is heat-treated at 25-65°C for ≥96 hr after applying the treating liquid containing the epoxy compound and the hardness of the mixed epoxy resin composed of the treating liquid is 65-85.

COPYRIGHT: (C)2007,JPO&INPIT