Tokai Rubber Industries, Ltd.

Hidehito Ikeda

Kazutaka Katayama

Ayumu Ikemoto

Yoshio Okado

Motoshige Hibino

Hiroaki Ito

Kazushige Sakazaki

Hiroyoshi Mori

Shinji Iio

Tetsuji Narasaki

Ryo Hirai

Koji Senda

Hideji Fukaya

A hose for gasohol fuel including an inner layer containing at least one selected from (A) to (D) below and an alcohol-cut off layer including a rubber composition containing a butyl rubber, a hydrated hydrotalcite compound, and a 1,8-diazabicyclo(5,4,0)undecene-7 salt (DBU salt):

Hose for gasohol fuel

A method for manufacturing a rubber product including masticating polymer with carbon black and factice is provided. A high-quality rubber product manufactured by this method is also provided. According to the present method, the carbon black is prevented from separating from a polymer and reaggregating, while the work environment is not deteriorated. A rubber composition prepared by the present method can be vulcanized and molded to manufacture the rubber product.

Rubber product and method for manufacturing the same

A hose of impermeability has a wall corrugated along at least a part of its length, and formed by an inner thin resin layer, a laminated layer including a metal film, or a layer formed by a metal film, and an outer thin resin layer. It has a very high fluid impermeability owing to its wall layer including or formed by a metal film, and is also very flexible, capable of absorbing vibration, light in weight and strong. A tubular inner thin resin layer is formed by extrusion as the innermost layer of a multi-layered hose wall, and a laminated tape including a metal film, or simply a metal film is spirally wound or longitudinally lapped about the inner resin layer. An outer thin resin layer is formed about a layer formed by the laminated tape, or metal film, and the whole is at least partly corrugated. Alternatively, corrugation is done before an outer thin resin layer is formed by electrostatic powder coating. A different process includes applying a laminated tape including a metal film about a mandrel to form a tubular laminated layer, and after removing the mandrel, coating the inner surface of the tubular layer with a resin powder electrostatically to form a thin resin layer thereon.

Hose of impermeability and a process for manufacturing the same

A method for manufacturing a high-quality rubber product while preventing carbon black from separating from the rubber polymer and from reaggregating, without deteriorating the work environment, and the rubber product obtained by the method. The method for manufacturing a rubber product comprising preparing a rubber composition containing carbon black mixed in rubber by a rubber kneading procedure including a mastication process and a kneading process; and vulcanizing and molding the rubber composition to manufacture a rubber product, wherein, together with the carbon black, a monofunctional acrylic monomer is mixed in the rubber in the mastication process.

Method for manufacturing rubber product

A rubber hose material for providing a rubber hose excellent in mechanical strength and with an intrinsic property (elongation) of rubber retained. The rubber hose material is formed by blending an ethylene-olefin resin (component (B)) as an organic filler into an ethylene-propylene rubber (component (A)).

Rubber hose material and rubber hose using the same

A hose of a laminated structure which comprises a rubber layer composed of a rubber composition, and a laminate including a metal foil and a resin, the rubber composition including:

Hose

A low-contaminative hose which permits a fluid to be passed through with minimized fluid contamination, and a rubber composition used to produce such a hose. The low-contaminative hose is formed from the rubber composition that includes, as essential components, at least one rubber selected from an ethylene-propylene-diene terpolymer, an ethylene-propylene copolymer and a silicone rubber, a peroxide vulcanizing agent, and a filler having a laminar crystal structure.

Low-contaminative hose and rubber composition for use in making the same

A hose comprising a laminate including a rubber layer comprising a rubber composition containing as essential components (A) a rubber made of at least one material selected from the group consisting of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer, (B) a vulcanizing agent containing a peroxide, (C) a resorcinol compound, and (D) a melamine resin; and a layer made of at least one material selected from the group consisting of a polyamide resin, an ethylene-vinyl alcohol copolymer, and a metal. In such hose, the rubber layer and the non-rubber layer made of the polyamide resin, the ethylene-vinyl alcohol copolymer, or of the metal adhere well to each other, without applying an adhesive to an interface therebetween.

A packing structure has a core element of a material having a high fluid impermeability, and a thin coated rubber layer formed thereon to cover at least its sealing surface and having a glass transition temperature which is lower than the lowest temperature allowable for the packing structure. It shows a high sealing property even at a low temperature and a high fluid impermeability when used for sealing e.g. a pipeline for conveying fuel in a motor vehicle.

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Kasugai, Japan

Hidehito Ikeda