초록 ▼

A V-ribbed belt A is made up of a compression rubber 3, an adhesion rubber 1 laminated to the upper surface of the compression rubber 3, and a plurality of tension members 2 fixed by rubber of the adhesion rubber 1 to be held in place in the adhesion rubber 1 and arranged in the direction of the len

A V-ribbed belt A is made up of a compression rubber 3, an adhesion rubber 1 laminated to the upper surface of the compression rubber 3, and a plurality of tension members 2 fixed by rubber of the adhesion rubber 1 to be held in place in the adhesion rubber 1 and arranged in the direction of the length of the belt. The upper surface of the adhesion rubber 1 is covered with a covering fabric-rubber composite B. All the rubber sections of the composite B are composed of a rubber compound formed by incorporating 5 to 15 phr of an adhesive prepared by mixing resorcinol or denatured resorcinol with a methylene donor, into H-NBR. The adhesion rubber 1 and the compression rubber 3 are composed of a rubber compound whose principal components are ACSM and carbon for achieving good belt back-face drive in high-temperature environment.

대표청구항 ▼

[ The invention claimed is:] [1.] A V-ribbed belt comprising (a) a compression rubber, (b) an adhesion rubber laminated to the upper surface of said compression rubber, and (c) a tension member fixed by rubber of said adhesion rubber to be held in place in said adhesion rubber and arranged in the di

[ The invention claimed is:] [1.] A V-ribbed belt comprising (a) a compression rubber, (b) an adhesion rubber laminated to the upper surface of said compression rubber, and (c) a tension member fixed by rubber of said adhesion rubber to be held in place in said adhesion rubber and arranged in the direction of the length of said V-ribbed belt wherein a plurality of grooves with a cross-section of vee shape are formed in the lower surface of said compression rubber, continuously extending in the direction of the length of said V-ribbed belt and wherein the upper surface of said adhesion rubber is covered with a covering fabric-rubber composite;said covering fabric-rubber composite including:a covering fabric;an impregnated rubber introduced into said covering fabric;an impregnated rubber introduced into said cover fabric;an upper rubber layer applied onto the upper surface of said covering fabric;a lower rubber layer applied onto the lower surface of said covering fabric; andan adhesive rubber layer applied onto the lower surface of said lower rubber layer and providing adhesion of said covering fabric-rubber composite to the upper surface of said adhesion rubber;wherein at least said upper rubber layer of said rubber sections of said covering fabric-rubber composite is composed of a rubber compound that has resistance to abrasion/viscosity and resistance to heat cracking, and whereinsaid rubber compound is a compound formed by incorporating 5 to 15 phr of an adhesive prepared by mixing resorcinol or denatured resorcinol with a methylene donor, into H-NBR (hydrogenated acrylonitrile-butadiene rubber).