| 摘要 |
It is provided a polyester cord for reinforcement of rubber suitable to the use for tire cap ply where a high elastic modulus is available and heat-resisting adhesive property and strength retaining rate upon exposure to high temperature for long time in rubber are significantly improved and also to provide a method for producing the same. A method for production of polyester cord for reinforcement of rubber, characterized in that, in bestowing adhesive property to rubber on a polyester fiber material, four members of a treating solution containing a carrier, an aqueous solution of a blocked isocyanate, a dispersion of an epoxy compound and a mixed solution of resorcinol-formaldehyde-latex are combined as a treating solution and said polyester fiber material is subjected to a treatment by means of a one-stage or two or more multi-stage treatment, wherein said polyester fiber material is treated with a first treating solution compounded at least with a treating solution containing a carrier, then treated with a second treating solution where at least a mixed solution of resorcinol-formaldehyde-latex is compounded and, after treating with the second treating solution in the final stage, a thermal treatment under a normalizing tension adjusted to not less than 0.2 cN/dtex is carried out.
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