Scheduled to exhibit at Convertech (Tokyo Big Sight)

Are you having trouble with cracks in the plating transferring onto the mirror-finished rolls for film molding? It can be improved with crack-free plating.

Hard chrome plating has excellent hardness with a hardness value of HV750 to 900, but it has the issue of cracks (fine fissures) in the coating, which means that no matter how much the surface is polished to a mirror finish, the cracks can transfer to the product. Our company has long had the technology for a non-crack chrome plating called "Cloamore." The hardness can reach up to HV1800 through heat treatment at temperatures between 200°C and 600°C, and due to being crack-free, it has excellent corrosion resistance. However, since the coating can only be applied as a thin film with a thickness of up to 5μ, it has not been applicable to mirror surface rolls until now. However, we have developed a "Super Mirror Crack-Free Roll" that solves these problems by forming a special two-layer structure. 【Features and Effects】 ■ Achieves a super mirror crack-free surface with a roughness of Ry0.05 or less. ■ Since Cloamore is on the outermost layer, it has a hardness of about HV1200, which is approximately 1.5 times that of hard chrome plating, making it less prone to scratches due to its excellent wear resistance. ■ Being crack-free enhances corrosion resistance and reduces resin accumulation on the roll surface. It is also expected to improve anti-fouling properties and non-contamination effects. *For more details, please feel free to contact us.

• Contract manufacturing
• Surface treatment contract service
• Other metal materials

Consistent production from roll manufacturing to surface treatment and polishing! Reducing outsourcing efforts and delivering high-quality products to our customers!

Our company designs and manufactures various metal rolls used in film and sheet extrusion machines, slitters, stretchers, coater machines, and paper-related machinery. Since we can perform all plating and polishing processes in-house after roll production, we are able to deliver high-quality products to our customers. Are you struggling with the hassle of outsourcing to different companies for various processing tasks, along with managing delivery times and quality control? By placing orders with our company, which offers integrated production, you can easily manage delivery schedules and respond quickly in case of any issues. 【Equipment Owned】 Chrome Plating Tanks: 1.3m(W)×4.5m(L)×5.8m(H) 1.7m(W)×4.5m(L)×4.7m(H) and others, totaling 10 tanks Polishing Machines: Cylindrical polishing, cylindrical vertical polishing, cylindrical buff polishing, inner diameter buff polishing, double-headed buff polishing, flexible buff polishing Roll Processing Equipment: CNC precision lathe, general-purpose lathe machining center, radial drill vertical milling machine, welding equipment dynamic balancing machine *For details on processable sizes, please contact us.

• Paper Converting Machinery

Leave everything from the production of all types of rolls to surface treatment to us!

Leave all aspects of manufacturing and surface treatment of various rolls used for shaping and secondary processing of films and sheets, such as extruders, coaters, printers, and stretchers, to us! We can sketch, CAD design, and manufacture rolls currently in use. We will also investigate and reproduce surface treatments. 【Features】 ◆ Capable of processing micron-level G polishing required for coater rolls and others ◆ Vertical polishing with a super mirror finish of 0.05S or less is also possible ◆ Surface treatments such as Tef-Lock treatment to prevent dirt adhesion and Cro-Amol treatment for high hardness are also available.

• Extrusion Machine
• Coater

It is possible to consistently produce heat transfer circulation rolls, which are essential for film manufacturing and lamination processing lines, from iron core production to surface treatment.

A preheating and cooling roll is a roll that manages the surface temperature by circulating a heat medium such as water or oil inside the roll, serving the purpose of heating or cooling substrates like films and sheets. There are different internal structures, including single-tube type, double-tube type, and triple-tube type. The single-tube type has a hollow interior, and depending on whether the inlet and outlet are the same or different, it uses either a single or double rotary joint. While the single-tube type is cheaper to manufacture due to its simple structure, it has the drawback that as the roll size increases, it requires more heat medium for preheating and cooling, and the heat medium tends to stagnate, leading to uneven surface temperatures. The double-tube and triple-tube types have an internal tube placed inside the outer cylindrical pipe of the roll, allowing the heat medium to flow through the gaps between the pipes. This structure can limit the amount of heat medium to the flow paths, and since the heat medium flows through the gap between the outer and inner tubes, it can efficiently preheat and cool with less variation in surface temperature. If the inlet and outlet are different, it is structured as a double-tube type; if they are the same, it is structured as a triple-tube type.

• Contract manufacturing

Numerous delivery achievements of converting machine rolls! Contributing to high-precision coating.

The coater roll is a roll that plays the role of applying coating liquid to the substrate in reverse coaters such as coating rolls, application rolls, and metering rolls. The thickness of the coating film is adjusted by the rotation speed of the roll and the gap between the rolls, and high precision is required for the roundness, cylindrical shape, and runout during rotation to achieve a thin and uniform coating. Despite their simple appearance, rolls are highly precise industrial components. As the required precision for rolls becomes more advanced, the processing becomes more difficult, and you may have experienced cases where the delivered rolls did not meet the required precision. At Otec, we can manufacture and process high-precision rolls with roundness, cylindrical shape, and runout of less than 3 microns, thanks to our many years of experience. We can also reproduce the ideal surface roughness according to customer requests. We provide inspection reports (runout charts, roughness data) and conduct on-site inspections. Additionally, we can also perform polishing with bearings installed upon request. Please contact us for more details.

• Contract manufacturing

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without affecting the base material with heat. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

● The production time for cast prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or varying dimensions, can be molded at the same time in one molding process. This allows for the verification of multiple types in a short period.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

● The production time for casting prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly creating sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or variations in dimensions, can be created in a single molding process. This allows for the verification of multiple types in a short period.