岡本ローラ製作所 List of Products and Services

In the machinery and equipment designed and manufactured by Company N, the material "red rubber" was used for the parts in the roll. However, since there is currently no manufacturer producing it, they were looking for an equivalent material. Therefore, we proposed our product "VOKA." Currently, the rollers of the machines being manufactured by the company are using our product. It has been reported that the durability has improved compared to the previous material, contributing to the longevity of the rolls. [Case Study] ■ Background: They were looking for an equivalent material since there is currently no manufacturer producing it. ■ Solution: We proposed "VOKA." ■ Effect: Achieved the longevity of the rolls by changing from the existing material. *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• Other processing machines

We received a consultation regarding the roll of the steel plate cutting machine designed and manufactured by T Company, as the steel plates were slipping. The slipping of the steel plates led to poor yield and defects in the products, resulting in multiple issues, and they were seeking improvements through material changes. In response, we proposed our "Spike." As a result, we were able to resolve the issue of steel plate slipping. This improved the yield and maximized the machine's performance. [Case Study] ■ Background: The slipping of the steel plates caused poor yield and defects in the products. ■ Solution: Proposed the "Spike." ■ Effect: Improved the problem of steel plate slipping. *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• Other processing machines

At Company J, related to the steel manufacturing plant, rolls were used in a 24-hour operational line, leading to a decrease in the grip strength of the roll surfaces becoming a problem. Additionally, there was a demand to reduce the annual number of roll replacements and increase production capacity, while also improving the durability of the rolls to achieve cost reductions. To reduce the annual replacement count, we proposed a material that enhances grip strength through our Grifor technology. As a result, the improvement in roll grip strength increased the number of days the rolls could be used, and by reducing the days of line stoppage and roll replacement, we were able to achieve an increase in production capacity. [Case Study] ■ Background: Decrease in roll surface grip strength ■ Solution: Proposed a material to enhance grip strength using Grifor ■ Effect: Improved grip strength led to increased production efficiency *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• Other processing machines

During our rubber roll molding process, we encountered a defect that caused scratches on the shafts, so we were considering corrective measures. To prevent scratches, we manufactured protective covers using polyurethane for the frames and forklift forks that come into contact with the shafts. As a result, scratches on the shafts have been eliminated, leading to improved quality. The material is also excellent in load-bearing capacity and weather resistance, so we have been using it for nearly 10 years. [Case Study] ■ Background: A defect causing scratches on the shafts occurred ■ Solution: Manufactured protective covers using polyurethane ■ Effect: Scratches on the shafts have been eliminated, and quality has improved *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• Other processing machines

At Company J, a steel pipe manufacturing company, there was a quality issue where scratches occurred on the steel pipes and fittings due to the gripping part of the fastening machine being made of iron, which could not withstand the torque during fastening. This issue required the use of an elastic material capable of withstanding the required fastening torque, so we manufactured the gripping part's claws using our high-load resistant urethane material, NOR. As a result, we were able to achieve fastening without scratches while satisfying the required fastening torque, leading to improved yield and quality. [Case Study] ■ Background: Quality issue with scratches on steel pipes and fittings during fastening due to torque. ■ Solution: Manufactured the gripping part's claws using NOR, a high-load resistant urethane material. ■ Effect: Achieved both improved yield and quality. *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• Other processing machines

This document introduces numerous case studies of the implementation of industrial and commercial rubber rolls. It includes the case of "Company J, a steel pipe manufacturer," which achieved both improved yield and quality, as well as examples from "Company T, a steel plate production line," and "Company N, a plastic molding equipment manufacturer." Please use this information when considering the introduction of industrial and commercial rubber rolls. [Contents] ■ Company J, a steel pipe manufacturer ■ In-house improvement case studies ■ Company J, a steel mill ■ Company T, a steel plate production line ■ Company N, a plastic molding equipment manufacturer *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• Other processing machines

"Fluoroelastomer" is a rubber material that has high heat resistance and cold resistance, as well as good oil resistance and chemical resistance. 【Characteristics (excerpt)】 ■ Abbreviation according to ASTM D1418: FKM ■ SP value: 7.3 ■ Chemical structure: Copolymer of hexafluoropropylene and vinylidene fluoride ■ Properties of pure rubber ・ Specific gravity: 1.86 ・ Mooney viscosity (ML1+4 100℃): 65–180 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Silicone rubber" is a rubber material that possesses high heat resistance and cold resistance, and is also excellent in oil resistance. [Characteristics (excerpt)] ■ Abbreviation according to ASTM D1418: Q ■ SP value: 7.3 to 7.6 ■ Chemical structure: Organic polysiloxane ■ Properties of pure rubber ・ Specific gravity: 0.98 ・ Mooney viscosity (ML1+4 100℃): Liquid or 20-60 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

Hydrogenated nitrile rubber is a new material that excels in gasoline resistance, ozone resistance, abrasion resistance, chemical resistance, and heat resistance, while also having good strength and elasticity. It is a rubber material that is expected to see increased demand in the future. 【Properties (excerpt)】 ■ Abbreviation according to ASTM D1418: HNBR ■ SP value: 8.7–10.5 ■ Chemical structure: Hydrogenated acrylonitrile-butadiene copolymer ■ Properties of pure rubber - Specific gravity: 1.00-1.20 - Mooney viscosity (ML1+4 100℃): 30–100 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Urethane rubber" is a rubber material that can achieve high hardness and high elasticity, with particularly excellent mechanical strength. 【Characteristics (excerpt)】 ■ Abbreviation according to ASTM D1418: U ■ SP value: 10 ■ Chemical structure: Polyurethane ■ Properties of pure rubber ・ Specific gravity: 1.00-1.30 ・ Mooney viscosity (ML1+4 100℃): Liquid or 30-80 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Acrylonitrile Butadiene Rubber" is a rubber material with good oil resistance, abrasion resistance, and aging resistance. 【Properties (Excerpt)】 ■ Abbreviation according to ASTM D1418: NBR ■ SP value: 8.7 to 10.5 ■ Chemical structure: Butadiene-acrylonitrile copolymer ■ Properties of pure rubber - Specific gravity: 1.00-1.20 - Mooney viscosity (ML1+4 100℃): 30 to 150 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Chlorosulfonated polyethylene rubber" is a rubber material that possesses weather resistance, ozone resistance, heat resistance, chemical resistance, and abrasion resistance. 【Characteristics (excerpt)】 ■ Abbreviation according to ASTM D1418: CSM ■ SP value: 8.1 to 9.8 ■ Chemical structure: Chlorosulfonated polyethylene ■ Properties of pure rubber - Specific gravity: 1.15 - Mooney viscosity (ML1+4 100℃): 30 to 55 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Chloroprene rubber" is a rubber material with average properties such as weather resistance, ozone resistance, heat resistance, and chemical resistance. 【Characteristics (Excerpt)】 ■ Abbreviation according to ASTM D1418: CR ■ SP value: 8.1 to 9.4 ■ Chemical structure: Polychloroprene ■ Properties of pure rubber ・ Specific gravity: 1.23 ・ Mooney viscosity (ML1+4 100℃): 45 to 120 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Ethylene Propylene Rubber" is a rubber material with good aging resistance, ozone resistance, resistance to polar liquids, and electrical properties. 【Characteristics (Excerpt)】 ■ Abbreviation according to ASTM D1418: EPDM ■ SP value: 8 ■ Chemical structure: Polymer of ethylene, propylene, and a third component ■ Properties of pure rubber ・ Specific gravity: 0.86 ・ Mooney viscosity (ML1+4 100℃): 50–150 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Styrene-butadiene rubber" has properties that vary depending on the ratio of styrene in the molecule, but it is a rubber material that has better abrasion resistance and aging resistance than natural rubber. 【Properties (excerpt)】 ■ Abbreviation according to ASTM D1418: SBR ■ SP value: 8.4 to 10.3 ■ Chemical structure: Butadiene-styrene copolymer ■ Properties of pure rubber 　・ Specific gravity: 0.92 to 0.97 　・ Mooney viscosity (ML1+4 100℃): 30 to 60 *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

This document provides detailed information about the characteristics and manufacturing processes of various types of rubber handled by Okamoto Laura Manufacturing Co., Ltd. We will introduce the characteristics of various rubbers, including "styrene-butadiene rubber," as well as the manufacturing processes for rubber rolls and urethane rolls. [Contents] 1. Characteristics of major rubbers handled by our company 1 2. Characteristics of major rubbers handled by our company 2 3. Characteristics of urethane rubber - 3-1 Types of polyurethane 4. Allowable line pressure *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

Our company manufactures and sells various types of urethane rubber rolls, synthetic rubber rolls, and urethane rubber molded products, as well as various synthetic rubber molded products. We also accept orders for the complete production of new items, including the re-covering of existing rubber rolls and rubber lining from the core. Since we have a wide range of materials available, we can propose rubber materials that meet your specifications. Please feel free to consult with us. 【Business Overview】 ■Manufacturing and sales of various types of urethane rubber rolls, synthetic rubber rolls, urethane rubber molded products, and synthetic rubber molded products. *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• roller
• Other polymer materials

VOKA is a material characterized by superior wear resistance and load-bearing performance compared to general-purpose polyurethane. VOKA (special polyurethane) A 70~98 is used in high-load areas such as rubber springs and high-pressure seals. **Features** - Wear Resistance: Superior wear performance compared to MOCA-type polyurethane - Load-Bearing Capacity: Superior load-bearing performance compared to MOCA-type polyurethane - Oil Resistance: Exceeds NBR in oil resistance - Durability: Low fatigue performance against repeated dynamic loads - Insulation Resistance: Volume resistivity of 10^11 to 10^13 Ω·cm Wear resistance is tested using the Taber abrasion test (H22, 1000g, 1000 cycles). *For more details, please refer to the PDF document or feel free to contact us.*

• Rubber
• roller
• wheel

"VOKA" is a material characterized by superior wear resistance and load-bearing performance compared to general-purpose polyurethane. VOKA (special polyurethane) A 70~98 It is used in high-load areas such as crane wheels. 【Features】 ■ Wear resistance: Superior wear resistance compared to MOCA-type polyurethane ■ Load-bearing capacity: Superior load-bearing capacity compared to MOCA-type polyurethane ■ Oil resistance: Exceeds NBR in oil resistance ■ Durability: Low fatigue performance against repeated dynamic loads ■ Insulation resistance: Volume resistivity of 10^11 to 10^13 Ω·cm Wear resistance is tested using the Taber abrasion test (H22, 1000g, 1000 cycles) *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• roller
• wheel

VOKA is a material characterized by superior wear resistance and load-bearing performance compared to general-purpose polyurethane. VOKA (special polyurethane) A 70~98 is used in high-load areas such as wheels for AGVs (automated guided vehicles). **Features** - Wear Resistance: Superior wear resistance compared to MOCA-type polyurethane - Load-Bearing Capacity: Superior load-bearing capacity compared to MOCA-type polyurethane - Oil Resistance: Exceeds NBR in oil resistance - Durability: Low fatigue performance against repeated dynamic loads - Insulation Resistance: Volume resistivity of 10^11 to 10^13 Ω·cm Wear resistance is tested using the Taber abrasion test (H22, 1000g, 1000 cycles). *For more details, please refer to the PDF document or feel free to contact us.*

• Rubber
• roller
• wheel

"VOKA" is a material characterized by superior wear resistance and load-bearing performance compared to general-purpose polyurethane. VOKA (special polyurethane) A 70~98 It is used in areas with high loads, such as wheels for play equipment. [Features] - Wear resistance: Superior wear resistance compared to MOCA-type polyurethane - Load-bearing capacity: Superior load-bearing capacity compared to MOCA-type polyurethane - Oil resistance: Oil resistance exceeding that of NBR - Durability: Low fatigue performance under repeated dynamic loads - Insulation resistance: Volume resistivity of 10^11 to 10^13 Ω·cm Wear resistance is tested using the Taber abrasion test (H22, 1000g, 1000 cycles). *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• roller
• wheel

The "Spike OM-575/OM-585" is made from a material that provides high non-slip properties. It is based on a synthetic rubber with high wear resistance, oil resistance, and heat resistance, and uniformly disperses high-hardness special rubber chips to provide spike effects. Even if worn, the surface condition can be restored through polishing. It is suitable for bridle rolls and pinch rolls. 【Features】 ■ Exhibits high non-slip effect ■ Has wear resistance, oil resistance, pressure resistance, and heat resistance ■ Special chips demonstrate edge resistance ■ Special chips are made of synthetic rubber, so they do not affect the surface of the board material ■ The surface is refreshed through polishing, maintaining performance and being economical *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• roller
• Other polymer materials

"Ultra Resistor" is a material characterized by excellent self-lubrication, making it suitable for rolls that require sliding properties. Additionally, it has excellent resistance to strong acidic and alkaline solutions, allowing it to be used without issues in synchro roll applications. It has an antistatic effect, making it effective for static electricity measures. Furthermore, by using rubber as a backing, flexibility can be achieved. Thanks to our unique manufacturing method, there are no size limitations like those of tubes, allowing for lining in desired sizes and thicknesses. 【Features】 - Low wear: Static and dynamic friction coefficients are equivalent to fluororesin - Wear resistance: About 1/5 that of fluororesin - Chemical resistance: Resistant to strong acids and alkalis - Low-temperature properties: Maintains high impact strength even near -200°C 【Application Results】 Table rolls, synchro rolls, underwater rolls, guide rolls, backup rolls *For more details, please refer to the PDF materials or feel free to contact us.

• Rubber
• roller
• Other polymer materials

"NOR" is a material with higher heat resistance compared to general-purpose urethane. It also has high mechanical strength and excellent wear resistance. It is used in applications such as dryer outlet rolls and heat rolls for lamination, where the transported items reach high temperatures. The maximum usage temperature recorded is 130°C. 【Features】 ■ Heat Resistance - Superior heat resistance compared to MOCA-type urethane, usable up to 120°C. ■ Durability - Has high durability due to less rotational heat generation compared to MOCA-type urethane. ■ Temperature Dependence - Exhibits less reduction in elastic modulus over a wider temperature range compared to MOCA-type urethane. *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• roller
• Other polymer materials

"VOKA" is a material characterized by superior wear resistance and load-bearing performance compared to general-purpose urethane. It is used in high-load applications such as roller coaster wheels, AGV (automated guided vehicle) wheels, rubber springs, and high-pressure gaskets. 【Features】 - Wear Resistance: Superior wear resistance compared to MOCA type urethane - Load-Bearing Capacity: Superior load-bearing performance compared to MOCA type urethane - Oil Resistance: Exceeds NBR in oil resistance - Durability: Low fatigue performance under repeated dynamic loads - Insulation Resistance: Volume resistivity of 10^11 to 10^13 Ω·cm *For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• roller
• wheel

"VEXA" is an extremely acid-resistant rubber that exhibits minimal volume and change rate even in a highly oxidative nitric acid solution (60°C) environment. Additionally, it has excellent heat resistance and can be used up to 120°C. It is suitable for applications such as linger rolls and support rolls in acidic environments. 【Applications】 ■ Synchronization rolls for stainless steel pickling lines ■ Deflector rolls ■ Linger rolls, etc. *For more details, please download the PDF or feel free to contact us.

• Rubber
• roller
• Contract manufacturing