Canvas-rubber complex, v-ribbed belt using it and method of...

F - Mech Eng,Light,Heat,Weapons – 16 – H

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F16H 7/02 (2006.01) B29D 29/10 (2006.01) B32B 25/02 (2006.01) F16G 1/28 (2006.01) F16G 5/20 (2006.01)

Patent

CA 2122939

A canvas-rubber complex provided on an upper face of a tension rubber on a back side of a V-ribbed belt is composed of a covering canvas, impregnation rubber with which the covering canvas is impregnated, an outer rubber layer which is applied to a first face of the covering canvas which is located on the back face's side of the belt, an inner rubber layer which is applied to a second face of the covering canvas which is the back of the first face, and an adhesion rubber layer disposed on a side of the inner rubber layer for adhering the canvas-rubber complex to the upper face of the tension rubber. Among the rubber elements excepting the adhesion rubber layer, at least the outer rubber layer is formed of a rubber composition including as main ingredients thereof CR polymer, hard carbon and conductive carbon.

n complexe toile-caoutchouc posé sur la face supérieure d'un caoutchouc de traction au dos d'une courroie en V crantée est composé d'une toile de revêtement, d'un caoutchouc d'imprégnation dont la toile est imprégnée, d'une couche de caoutchouc extérieure appliquée à une première face de la toile de revêtement qui est située au dos de la courroie, d'une couche de caoutchouc intérieure appliquée à une deuxième face de la toile de revêtement qui est à l'endos de la première face, et d'une couche de caoutchouc d'adhérence posée d'un côté de la couche de caoutchouc intérieure pour faire adhérer le complexe toile-caoutchouc à la face supérieure du caoutchouc de traction. Parmi les éléments de caoutchouc, à part la couche de caoutchouc d'adhérence, au moins la couche de caoutchouc extérieure est formée d'un composé de caoutchouc comprenant, comme principaux ingrédients, le polymère CR, du carbone de trempe et du carbone conductible.

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