REINFORCING FIBER FOR RUBBER

摘要

PURPOSE:To obtain the subject fiber capable of providing belts having a high dedendum strength even when used at a high temperature and speed for a long period without causing peeling or cracking by forming a layer containing a water-soluble condensate of resorcin formaldehyde and specific two kinds of copolymer latexes on a glass fiber core wire. CONSTITUTION:The objective fiber is obtained by forming the first layer containing a water-soluble condensate of resorcin formaldehyde, a vinyl pyridine- styrene-butadiene copolymer latex and an acrylonitrile-butadiene copolymer latex on a core wire composed of glass fiber, and further the second layer containing a hydrogenated nitrile rubber having 30-50wt.% acrylonitrile group content and 2-40 iodine value and a crosslinking agent on the first layer.