TREATMENT OF 6-NYLON CORD WITH ADHESIVE

摘要

PURPOSE:To prevent the lowering of the strength of a dip cord and the lowering of the adhesive strength of cord and rubber, by heat-treating a twist cord of super-strong 6-nylon fiber under specific condition under tension and applying an adhesive to the cord. CONSTITUTION:A twist cord (composed of 6-nylon fiber having a stock fiber strength of >=12g/d) is treated in a stretch heat-treatment zone 1 under a condition satisfying the formula T>=84/S-80 [T is temperature ( deg.C) and S is tension (g/d)] and then subjected to dip treatment. The dipping liquid satisfies the relationship of y>=-0.75x-0.274Z<2>+4.282Z+16.8 [x is solid content (wt.%) in the dipping liquid; y is ratio (wt.%) of the total weight of resorcinol and formaldehyde to the latex in the dipping liquid; Z is ratio (wt.%) of vinylpyridine latex based on the total weight of vinylpyridine latex and styrene butadiene copolymer latex in the latex of the dipping liquid].