Mitsuboshi Belting Ltd.

Tsuyoshi Takehara

Manabu Mitsutomi

Yoshihito Noborikawa

Toshimichi Takada

Takashi Kinoshita

Keiji Takano

Susumu Takaba

Takeshi Kimura

Kazuyo Kojima

Yusuke Suzumegano

Sumiko Takeuchi

Nozomu Shigemitsu

A production method for producing a frictional power transmission belt containing an extensible layer forming a belt back surface, a compressive rubber layer formed on one surface of the extensible layer and frictionally engaging at the lateral surface thereof with pulleys, and a tension member embedded between the extensible layer and the compressive rubber layer along the belt length direction. A surface of at least a part of the compressive rubber layer to be in contact with pulleys is coated with a fiber/resin mixture layer that contains a resin component and heat-resistant fibers having a softening point or a melting point higher than a vulcanization temperature in a mixed state, and the heat-resistant fibers contain a fiber embedded so as to extend from the fiber/resin mixture layer to the compressive rubber layer.

Frictional power transmission belt and process for producing same

The present invention relates to a power transmission belt containing a frictional power transmission part and a fiber member that covers a surface of the frictional power transmission part, in which the fiber member is formed of a fiber (A) containing a water-absorbent fiber (A) and contains a surfactant, to a fiber member used in the power transmission belt, and to a method for manufacturing the fiber member.

Transmission belt, fiber member therefor, and manufacturing method for fiber member

The present invention relates to a frictional power transmission belt having a frictional power transmission surface covered with a warp knitted fabric, in which the warp knitted fabric contains a water absorptive thread in a proportion of 30% by mass or more based on the total amount of threads constituting the warp knitted fabric and a wale direction of the warp knitted fabric is substantially parallel to a belt longitudinal direction.

Power-transmitting friction belt and method for manufacturing same

The present invention relates to a frictional power transmission belt containing an extensible layer forming a belt back surface, a compressive rubber layer formed on one surface of the extensible layer and frictionally engaging at the lateral surface thereof with pulleys, and a tension member embedded between the extensible layer and the compressive rubber layer along the belt length direction, in which a surface of at least a part of the compressive rubber layer to be in contact with pulleys is coated with a fiber/resin mixture layer that contains a resin component and heat-resistant fibers having a softening point or a melting point higher than a vulcanization temperature in a mixed state, and the heat-resistant fibers contain a fiber embedded so as to extend from the fiber/resin mixture layer to the compressive rubber layer.

A power transmission belt having a body with a length, an inside, an outside, and laterally spaced side surfaces. The body has a first rubber composition that includes an organic peroxide used as a cross-linking agent and N,N'-m-phenylenedimaleimide and/or quinone dioxime in an amount of 0.5 to 13 parts by weight per 100 parts by weight of rubber components. The rubber components include (a) ethylene-vinyl ester copolymer and/or an ethylene-&#x3b1;,&#x3b2;-unsaturated carboxylate copolymer, and (b) an ethylene &#x3b1;-olefin rubber in a ratio of from 5:95 to 100:0 by weight.

Power transmission belt

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&#x2022;formaldehyde resin; and dispersing the treated fibers in rubber.

Rubber composition, a method of making the rubber composition, a power transmission belt made from the rubber composition and a method of making the power transmission belt

A power transmission belt having a body with a length and defined by a cushion rubber layer having at least one load carrying cord embedded therein and extending lengthwise with respect to the body, and a compression section made at least partially from rubber. The cushion rubber layer has a rubber composition including an ethylene-&agr;-olefin elastomer capable of being cross-linked with sulfur. The rubber in the compression section is a rubber composition made from an ethylene-&agr;-olefin elastomer capable of being cross-linked with an organic peroxide.

Growing community of inventors

Hyogo, Japan

Tsuyoshi Takehara