Since our founding more than 60 years ago, we at FUKOKU have been able to solve many problems in a wide range of fields, starting with auto parts manufacturing. Our experience has given us a flexible sense of creativity, which we will use to create new value in a wide range of fields, based on our motto, “Starting with rubber, brightening the future.”
There are many types of polyurethane used widely in many fields, such as foams, fibers, coatings, adhesives, and elastomers (with thermoplastic and thermosetting properties). We specialize in a type of high-strength thermoset elastomer commonly called cast urethane.
Cast urethane offers better mechanical strength, anti-abrasion performance, and anti-shock performance than synthetic rubber, resin, or any other elastic material, and is therefore used in comparatively severe (high-load, high-speed, or high-impact) environments.
FUKOKU focuses on abrasion resistance performance—the greatest benefit offered by cast urethane—and continues to go beyond industry conventions to develop materials with even greater abrasion resistance performance.
We leveraged the material technologies, molding/processing technologies, and quality management system we have developed for automobile-related parts in winning a top global share in wire saw equipment (used to cut ingots)—particularly in urethane rollers for semiconductor wafers.
We provide integrated production in-house that covers all processes, from material design to molding and shipping. Our maintenance processes (such as core inner diameter shaving) result in a high runout accuracy, allowing us to maintain a high level of quality while supplying products with optimal lead times.
Material selection > Core maintenance > Pre-treatment > Urethane molding > Post-processing > Measurement/inspection > Shipping
We manufacture wire saw rollers, guide rollers, and all types of urethane pulleys.
Our original mixture design allows us to manufacture special urethane with increased abrasion and liquid resistance properties, and our products have been evaluated on actual machines, demonstrating a longevity three to five times normal.
We offer a full lineup of products including water-resistant and oil-resistant grade products to meet your application.
These urethane mats deliver stable electrostatic diffusion properties.
They can eliminate problems caused by electrostatic charging and electrostatic discharging. Made from urethane, they provide superior durability and include no carbon-based filler, and can therefore be used even in cleanroom environments. They are ideal for use on workspace floors or workbenches, or as antistatic pads.
They are also electrostatic throughout their thickness direction , so surface abrasion or wiping and cleaning will not cause performance degradation.
Volume resistance: 10⁷ to 10⁸Ω (JIS K6911)
All processes are handled in-house through integrated production, allowing us to ensure a high level of quality while minimizing lead times.
FUKOKU performs maintenance on your roller cores.
Our maintenance can increase runout accuracy during rotation, help maintain precision in processed products, and improve equipment durability. The services have won high acclaim from our customers.
We use original elastomer casting machinery when mixing and stirring materials, resulting in accurate and stable physical properties.
FUKOKU is a specialist manufacturer of synthetic rubber for various industries.
We have more than 1,000 different compounds and leverage our experience and knowledge in urethane material mixture technologies.
We use various kinds of analytical equipment to analyze organic compounds (including testing equipment such as universal material testers, friction/abrasion testers, and single wire saw evaluators) to provide reliable quality management.
We use tests such as stress simulations based on our original FEM analysis technology to design optimal products and save wasted resources.
Example of using FEM analysis to propose shape to reduce stress concentration
Item | Unit | General-purpose grade | Extended product life grade | ||||
---|---|---|---|---|---|---|---|
Ether-type Hs90 |
Ether-type Hs95 |
Ester-type Hs90 |
Ester-type Hs95 |
Water-resistance Hs92 |
Oil-resistance Hs92 |
||
Hardness | Durometer TYPE A |
90 | 95 | 90 | 95 | 92 | 92 |
Tensile strength | MPa | 40 | 50 | 52 | 53 | 42 | 40 |
Stretching | % | 410 | 350 | 400 | 440 | 600 | 700 |
100% tensile stress | MPa | 9 | 13 | 8 | 12 | 9 | 8 |
Tensile strength | kN/m | 93 | 108 | 87 | 107 | 110 | 122 |
Taber abrasion Abrading wheel: H-22, weight: 1 kg No. of rotations: 1,000 |
mg | 37 | 40 | 42 | 57 | 13 | 18 |
Contact us
Please submit any inquiries here.
We continue to develop technologies and products that help bring industrial machinery to the next level.
Please submit any inquiries about products or recruiting using the respective inquiry forms.