Abstract: A method of making a rubber composition. The method includes the steps of: providing fibers of a desired length; treating the fibers with a treating liquid made up of a nitrile rubber-modified epoxy resin and an alkylphenol•formaldehyde resin; and dispersing the treated fibers in rubber.

Abstract: A method of bonding an ethylene•&agr;-olefin rubber composition with a fiber material. The method includes the steps of adhesion treating the fiber material with a resorcinol-formalin-rubber latex with an ethylene•&agr;-olefin elastomer latex and vulcanization bonding the adhesion-treated fiber material together with an unvulcanized ethylene•&agr;-olefin rubber composition.

Abstract: A power transmission belt having a body with a length, an inside, an outside, and laterally oppositely facing side surfaces. The body has a) a cushion rubber layer in which at least one load carrying element is embedded so that the at least one load carrying element extends lengthwise relative to the body, and b) a compression rubber layer. Fabric material is provided on one of the inside and outside of the body. The fabric material is treated with a mixture of carbon-black-dispersed liquid and resorcinol-formalin-latex liquid.

Abstract: A method of bonding an ethylene•&agr;-olefin rubber composition with a fiber material. The method includes the steps of adhesion treating the fiber material with a resorcinol-formalin-rubber latex with an ethylene•&agr;-olefin elastomer latex and vulcanization bonding the adhesion-treated fiber material together with an unvulcanized ethylene•&agr;-olefin rubber composition.

Abstract: A method of bonding an ethylene•&agr;-olefin rubber composition with a fiber material. The method includes the steps of adhesion treating the fiber material with a resorcinol-formalin-rubber latex with an ethylene•&agr;-olefin elastomer latex and vulcanization bonding the adhesion-treated fiber material together with an unvulcanized ethylene•&agr;-olefin rubber composition.

Abstract: A method of making a rubber composition. The method includes the steps of: providing fibers of a desired length; treating the fibers with a treating liquid made up of a nitrile rubber-modified epoxy resin and an alkylphenol.formaldehyde resin; and dispersing the treated fibers in rubber.

Abstract: A power transmission belt having a body with a length, an inside, an outside, and laterally oppositely facing side surfaces. The body has a) a cushion rubber layer in which at least one load carrying element is embedded so that the at least one load carrying element extends lengthwise relative to the body, and b) a compression rubber layer. Fabric material is provided on one of the inside and outside of the body. The fabric material is treated with a mixture of carbon-black- dispersed liquid and resorcinol-formalin-latex liquid.

Abstract: A method of bonding an ethylene•&agr;-olefin rubber composition with a fiber material. The method includes the steps of adhesion treating the fiber material with a resorcinol-formalin-rubber latex with an ethylene•&agr;-olefin elastomer latex and vulcanization bonding the adhesion-treated fiber material together with an unvulcanized ethylene•&agr;-olefin rubber composition.

Abstract: A heat treatment device including a handling chamber that has a carriers feed in/out opening for carriers holding plural sheets of objects to be treated parallelly vertical, a vertical heat treatment furnace for heat treating the objects and a posture changer for swinging the carriers near the carriers feed in/out opening of the handling chamber on a rotational center into a territory of lower sides of the carriers to change the posture of the objects to be treated from the vertical position to the horizontal position. The heat treatment device also has a carriers storage unit disposed above the posture changing means for storing a plural number of posture changed carriers, conveying device for conveying the carriers between the storage unit and the posture changing device and the heat treatment furnace side. Also, provided is a transferrer for transferring the objects-to-be-treated to/from an objects-to-be-treated holder for loading and unloading into/out of the heat treatment furnace side.