右川ゴム製造所 List of Products and Services

For details, please refer to the catalog.

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Traditionally, the shape of outer solid sponges has been considered difficult to form integrally through extrusion due to issues such as the escape of foaming gas from the solid. Our company's "Functional Rubber Series Coated Sponge" resolves these issues through our formulation and nozzle expertise. We have achieved integral molding through two-layer continuous vulcanization extrusion, successfully improving production capacity. This is optimal for areas requiring the softness of sponge and the strength of solid. 【Features】 ■ Supports long lengths → Length can be freely chosen due to continuous molding! ■ Good deformation → Compression permanent deformation of 16% during processing! ■ Flame retardant → Passes railway vehicle material fire tests! ■ Productivity → Exceptional productivity due to two-layer continuous vulcanization extrusion! For more details, please contact us or download the catalog.

• Reinforcement and repair materials

Rubber extrusion molding (continuous vulcanization) is considered very difficult for molding materials with low hardness because it shapes and cross-links the material in a non-pressurized state, unlike compression molding and other methods. Our "Functional Rubber Series - Low Hardness" achieves a low hardness of 15° using EPDM solid while maintaining the processing conditions during extrusion molding. It can be utilized in applications where low hardness is required but sponge rubber is too weak. 【Features】 ■ Long Length Compatibility → Due to continuous molding, the length can be freely selected! ■ Low Hardness → Achieves 15 degrees on the A hardness scale! ■ Weather Resistance → Excellent weather resistance due to EPDM! ■ Strength → Solid structure provides strength! For more details, please contact us or download the catalog.

• Reinforcement and repair materials

This is the Right River Rubber Manufacturing Company, celebrating 100 years of rubber manufacturing. We provide services that go beyond general mass production, including rubber formulation design, functional material development, mold design, and prototype support, catering to all customer requests. 【Examples】 - The shape of the rubber is fixed, so I want you to create rubber that fits the intended use. - I only have a vague image, but I would like to consult with you. - Can this kind of material really be made of rubber? - I don't have a drawing, only the actual item. Is it possible to create the same thing? - Can you create prototypes even for small lots, starting from just one piece? - Although the start was delayed, the deadline remains next week. Is there any way you can accommodate this? - I am a novice when it comes to rubber. Could you accompany me to explain things to the customer? ■ Please feel free to contact us with any inquiries.

• Window and shutter openings

By designing the rubber formulation, it is possible to manufacture rubber that controls the electrical resistance value (resistance control based on ionic conduction/electronic conduction).

• Reinforcement and repair materials

The super set form is a highly resilient rubber sponge that brings permanent deformation to nearly zero. It returns instantly, with extremely small permanent deformation and excellent shape retention. It is ideal for packing materials in areas requiring high airtightness and for gasket materials in parts that need to maintain airtightness for extended periods. For more details, please contact us or refer to the catalog.

• Reinforcement and repair materials

We create various shapes of 2D cross-sections ranging from small items with a diameter of about 2mm to large items of about 150mm! We provide reliable technology for rubber parts centered on extrusion molding across various industrial fields such as automotive, OA components, construction, civil engineering, and general industrial products. We always strive to respond broadly and meticulously to the diverse needs of our customers, and we quickly and efficiently execute even small lots or prototype orders. For more details, please contact us or refer to our catalog.

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