中野製作所 List of Products and Services

We would like to introduce a research and development case of the rubber-resin cross-linked composite material 'Radicalock(R)', which was adopted for the development of the composite film for shoe soles "R-COMPO" handled by Daicel Evonik Co., Ltd. Rubber has excellent performance and functionality as a material for shoe soles, such as grip and abrasion resistance; however, a drawback of conventional technology is that rubber shoe soles tend to be heavy. To address this, we achieved a lightweight and high-performance rubber shoe sole by applying minimal rubber in a studded pattern on a thin and light resin film. The use of transparent resin has also increased the design freedom for shoe soles. In addition, we have other cases of independent research and development. [Research and Development Cases] ■ Inter-company collaborative development ■ Independent research and development *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

We will introduce a case study on how the rubber-plastic cross-linked composite material "Radicalock" is utilized for product lightweighting and energy saving. Parts used for transportation and braking, such as rubber rollers and rubber stoppers, are often bonded to a metal base. However, there is a strong demand to use plastic instead, as metal is heavy and difficult to process into various shapes. With our product, it is possible to manufacture composite parts that firmly bond plastic and rubber. This significantly expands the design possibilities for rubber components. 【Features】 ■ Lightweight ■ Energy saving ■ Rationalization of part shapes ■ Improved maintenance efficiency ■ Reduction in the number of parts *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

We introduce a case study that eliminates the hassle of disassembly cleaning and reduces the risk of foreign matter contamination due to detachment, using the rubber-plastic cross-linked composite material "Radicalock." Due to the poor adhesive properties of rubber, it is often fixed in place with fittings or screws. This can lead to dirt accumulating in the gaps between the rubber and the base, necessitating disassembly cleaning. However, during this process, parts may fall off and get lost, or foreign matter may be introduced. With our product, it is possible to manufacture composite parts where plastic and rubber are tightly bonded without any gaps. The absence of gaps and the elimination of the need for disassembly significantly enhance the safety and usability of the product. 【Features】 ■ Improved material properties ■ Safety ■ Increased efficiency in maintenance work ■ Improved manufacturing processes ■ Reduction in the number of parts ■ New manufacturing technology *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

This document is an explanatory section on the suitability diagnosis of the rubber and plastic composite manufacturing technology "Radicalock" through cross-linking. We provide detailed information on seven improvement effects, including the "Adhesive Strength Improvement Course," "Maintenance Improvement Course," and "Human Safety Improvement Course." Please take a moment to read it. [Contents] ■ Adhesive Strength Improvement Course ■ Adhesive Workability Improvement Course ■ Component Performance Improvement Course ■ Component Durability Improvement Course ■ Maintenance Improvement Course *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

We will introduce a case study of problem-solving that developed a product that does not exist in the world using the rubber compound "Radicalock(R)" for rubber-plastic cross-linked composite materials. When it comes to using elastic materials, TPE (thermoplastic elastomer) is often chosen, but TPE has many weaknesses, such as being sensitive to heat and prone to wear. With our product, it is possible to achieve reliable adhesion even with a small bonding area, allowing for point bonding of rubber and rib-shaped bonding. Additionally, there is a composite film that combines rubber with a flexible resin sheet. 【Features】 ■ Weight reduction ■ Rationalization of part shapes ■ Improvement of material properties ■ New manufacturing technologies *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

"Radicalock(R)" is a formulated rubber made by adding auxiliary materials and additives to peroxide-crosslinked synthetic rubber such as EPDM and silicone rubber, and then mixing it with a crosslinking reaction accelerator for plastics. It utilizes the technology of direct adhesion between plastics and rubber developed by Daicel Evonik Co., Ltd. Through the chemical reactions occurring in a mold loaded with plastic components, molecular chains (crosslinking chains) are formed at the interface between the rubber and plastic, creating a strong bond. 【Features】 ■ Solves adhesive problems ■ Usable with plastics ■ Simplifies the manufacturing process *For more details, please download the PDF or feel free to contact us.

• Composite Materials
• roller

"Rajikarokku" is a technology that firmly bonds rubber and plastic, which are difficult to adhere using adhesives or double-sided tape, through direct chemical bonding to create composite materials. It applies the rubber crosslinking reaction using peroxides for the bonding of rubber and plastic. At the interface between rubber and plastic, the molecular chains of rubber and plastic are crosslinked. This also contributes to the simplification of the manufacturing process, eliminating the need for steps required in traditional adhesive processes, such as surface roughening, degreasing, primer application, and adhesive application, leading to a reduction in manufacturing time and improvement in yield. [Features] - Capable of bonding silicone and nylon - Adhesive strength exceeding the tensile strength of rubber - No concerns about solvent odor, degradation peeling, or reduction in physical properties - No need for adhesive application or alignment *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

Our company offers three types of adhesive technologies for different materials. "Radicalock" provides strong adhesion even on small surfaces. It creates a strong bond by forming cross-linking (chemical bonds) between the molecular chains at the interface of rubber and resin. In addition, we have "AKI-Lock," which can accommodate various resins and rubbers and allows for easy laser treatment of resin surfaces, and "DLAMP," which can work with a variety of metals. 【Three Types of Adhesive Technologies for Different Materials】 ■ No need for solvent degreasing: "Radicalock" ■ No worries about uneven application: "AKI-Lock" ■ Can bond difficult-to-adhere materials strongly: "DLAMP" *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

We would like to introduce our product, "Radicalock VB Latex." It is a specially formulated liquid rubber that covers the surface of resin (Veil) and simply requires heating (Bake). You can apply it only to the necessary areas by painting, or cover the entire surface by dipping, allowing for the implementation of a rubber coating at the micron level on resin parts. It is suitable for use when you want to add grip or tackiness to parts, or in areas where coating is difficult due to complex shapes. 【Manufacturing Process】 ■STEP 1: Apply VB Latex ■STEP 2: Heating triggers a chemical reaction ■STEP 3: The rubber coating is formed through chemical bonding *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Other polymer materials

Our company provides a one-stop service from contract development to mass production of rubber products. "Creation, precision, refinement, and heartfelt dedication" is the essence of Nakano Seisakusho's manufacturing spirit. With sincerity and unity, we strive to meet our customers' expectations and bring them joy, while also ensuring that nature, society, and the world harmonize and become even a little more prosperous. We will continue to nurture and grow our "sincerity." 【Business Activities】 ■ Research and development of compounded rubber utilizing functional materials ■ Development and manufacturing of rubber components and rubber resins ■ Research and development and manufacturing of composite materials ■ Research and development of rubber surface treatment technologies and application development *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Contract manufacturing

Our company has accumulated a wealth of know-how through numerous orders from customers and proactive research activities. By merging this know-how with newly acquired knowledge, ideas are sparked, and based on those ideas, various hypotheses are formulated, prototypes are created, validated, and improved, leading to optimal solutions. Supporting this cycle are excellent equipment and materials. This allows our company to conduct all processes from design to testing in-house. 【Business Activities】 ■ Research and development of compounded rubber utilizing functional materials ■ Development and manufacturing of rubber products and rubber components ■ Research and development and manufacturing of rubber-resin composites ■ Research and development of rubber surface treatment technologies and application development *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Rubber
• Contract manufacturing