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Latest update： 17/09/2020 09:07:33
TOA DENKA Co., Ltd.
We are expanding our functional thin film treatment business in Japan and overseas.
We conduct consignment surface treatment processing in various fields. This includes Alumite treatment and Alodine treatment for housing-related parts such as doorknobs and exterior plating for semiconductor lead frame (Sn-Bi plating, pure Sn plating). We also conduct various kinds of plating for in-vehicle parts. Our TRI System is a technology for joining metal and resin. Its applications heat insulation and dissipation parts for servomotors, lens mount portions in cameras, caps of FCV (fuel cell vehicle) capacitors, and smartphone housings. Our products are highly evaluated for their joining strength and excellent sealing properties.
- TRI System
Outline of Technology
Bonding agents or resin catches for machining used to be necessary for ordinary insert molding because there is no joining mechanism on the metal and resin joining faces. Insert molding also has disadvantages in that gaps are produced on joining faces and there is no mechanical strength. Our TRI System® realizes strong, uniform bonding by producing joining mechanisms (chemical couplings) on metal surfaces. You can freely create designs without complicated processing on joining faces or shape restrictions. The TRI System® also exhibits excellent sealing and resistance against pressure, water, oil, and heat.
1. Solid joining strength A joining film formed by metal surface treatment strongly joins metal and resin. This produces joining strength not comparable with inter-molecular coupling by bonding agents. 2. High sealing property Metal and resin are evenly joined, so high airtightness can be produced. 3. Complicated shapes are unnecessary Even simple shapes can be joined, so design without shape restrictions is possible.
Cases of machining and use
Metal and resin that can be joined ・Metal: Copper, aluminum, etc. ・Resin: PPS, PBT, etc. Cases of processing ・Waterproof smartphone housings ・Parts for capacitors of fuel cell vehicles ・Sealing parts for secondary battery sealing plates
- TIER coating
Outline of Technology
Our TIER Coat® enables transparent epoxy resin forming without using a mold release agent. This is a film of about 30 nm thick that is very easy to remove from a mold. This mold-release film was developed on the concept of film where transparent epoxy resin does not stick. This film exhibits a mold release effect for transparent epoxy resin, and also for bonding resin such as silicone resin or urethane resin. A more excellent mold release effect compared with thermosetting resin is available for thermoplastic resin that is easier to release from a mold.
1. The film is thin but has excellent mold release characteristics. 2. Deposition to complicated shapes is good and products with good mold shape transferability are available. 3. The film exhibits strong adhesion to a mold by chemical coupling. 4. The film has enough durability to withstand practical use. 5. Molds can be reused because recoating is possible. 6. Environmentally hazardous materials are not used. 7. The film has water-repelling and slippery properties.
Cases of machining and use
・Coating for optical part molds, such as plastic lens forming molds and optical film forming molds ・Mold release effects available from transparent epoxy resin, and also bonding resin, such as silicone resin and urethane resin ・More excellent mold release effects available from thermoplastic resin that is easy to release from a mold rather than thermosetting resin
- GT STORM (Mg material and aluminum anode oxide film)
Outline of Technology
We realize a beautiful appearance with surface treatment only, and without coating. Surface treatment eliminates melt flow and lines unique to die casting and realizes a black and white appearance.
1. Coating process unnecessary Coating is unnecessary because Mg and Al alloys can be made black or white by GT STORM processing only. 2. Beautiful appearance A beautiful black and white appearance is available without melt flow, burrow, or flow lines unique to die casting. 3. Unique film characteristics Film thickness: Adjustable in the range from 10μm to 50μm (Good uniformity of each film thickness) Hardness: Mg, 400Hv or higher; Al, 300Hv or higher (film thickness 30μm) Corrosion resistance, salt spray test: Mg, 72H or higher; Al, 96H or higher (film thickness 30μm) 4. Uniform dimensions. The finishing shows even dimensional changes before and after treatment, including tapped holes.
Cases of machining and use
・Optical parts ・Automotive parts ・Other industrial parts
[Company strength] We are conducting mainly plating and chemical conversion processing. On the other hand, our company has developed 'functional thin film processing' such as TRI System and TIER Coat, and also carried out the development of the 'new plating process'. Our company's advantage is the spirit to challenge the new technology. We will work on the development of new surface treatment process, by using the accumulated technology and know-how, in the industry, academia and government collaborative research. [Business description] We conduct consignment surface treatment processing with a focus on various kinds of plating and chemical processing. We conduct surface treatment of parts for customers in various fields. These include Alumite treatment and Alodine treatment for housing-related parts such as doorknobs. We also conduct exterior plating for semiconductor lead frames (Sn-Bi plating; pure Sn plating), and various kinds of plating for in-vehicle parts. We provide functional thin film treatment, which was developed in industry-university-government joint research. Our TRI System is a technology for joining metal and resin, and our TIER Coat is a technology for preventing the adhesion of resin onto metallic dies during plastic molding. [Industry] Surface treatment industry [Strength of products / technologies] TRI System: Our TRI System is a technology for joining metal and resin without having to use an adhesive. The joining power is strong enough to destroy the resin portion when force is applied to peel off the joined portion, and the sealing properties are also excellent. TIER Coat: Our TIER Coat is a release film for resin moldings dies. The thickness of TIER Coat is as small as 30 nm. It has excellent releasability with respect to silicon resin, epoxy resin as an adhesive agent, thermosetting resin such as urethane resin, and thermoplastic resin such as acryl resin. This is how we can achieve resin moldings without having to use a release agent. [Representative's message] We have been actively participating in various exhibitions in various fields and at various locations (in Japan) since 2009. Our purpose is to cultivate markets with a focus on functional thin film processing. We established our sales engineering department in 2015, and started work on expanding sales including conventional plating and chemical conversion processing. We are steadily extending our overseas expansion in the form of technology transfer of our TRI System to South Korea in 2014, Vietnam in 2015, and China in 2016. We established our TRI Business Project in January 2016 in order to strengthen our support system. In the future we aim to expand our business, and we are considering the possibility of expansion to the United States and European countries. [Company structure for market development/overseas expansion] We established a sales engineering department in 2015, and started work on cultivating markets. We also established the TRI Business Project in 2016 to strengthen our support system in order to advance technology transfer of our TRI System for overseas expansion. [Market share/Ranking] We do not have detailed information or data on our market share. Joining metal and resin using our TRI System provides sealing properties as well as simple joining. We take pride in this unique technology. [Awards and media coverage] [Awards] Companies Excelling in Patent Utilization Award, by the Minister of Economy, Trade and Industry (2011); 9th (1998) and 14th (2003) Japan Society of Polymer Processing, and Aoki Technology Award, Award for Technology Progress (second time) (2014). [Media] Nikkan Kogyo Shimbun, 'Toa Denka Initiates a Service to Create Release Film for Resin Moldings and Services for High-Precision Dies' (June 23, 2015); Nihon Keizai Shimbun, 'The Next Step of Tohoku Enterprises: Joining and Separation Technologies Further Refined' (March 26, 2013); and so on. [Authorization/Certification] ISO 14001. Strategic Core Technology Advancement Program approval (in FY 2008, supplementary budget in 2009, and FY 2011). [Joint research and development] Iwate Industrial Research Institute: Practical development of organic solid phase release type separation film using high-speed particle collision (Strategic Core Technology Advancement Program, 2011-2013). Development of highly airtight joining and sealing technology for the sealing plates of in-vehicle lithium ion batteries (Strategic Core Technology Advancement Program, 2010-2011, under the supplementary budget). Development of thin film creation technology that imparts high release properties to micro-shaped dies for plastics molding (Strategic Core Technology Advancement Program, 2009-2011). National Institute of Advanced Industrial Science and Technology (AIST) and Iwate Industrial Research Institute: Development of a thin film oxygen sensor (Community Regeneration Consortium 2002-2003). Many other projects. [Intellectual property] Registered patents: Resin-Metal Joiner and Production Technique (Japanese Patent No. 5391459), and 12 other patents. Unexamined Patent Applications: Two patent applications. [Main Clients / Business History (domestic)] Miwa Lock (consignment plating and chemical conversion treatment processing; ongoing), Shibaura Electronics (consignment plating processing; ongoing), Mikuni (consignment plating processing; ongoing), Osaki Electric (consignment plating processing; ongoing), Nidec Copal Electronics (consignment plating processing; ongoing), and so on. [Main Clients / Business History (overseas)] Sales of TRI processing solvent accompanied by technology transfer of the TRI System (Korea: since 2014; Vietnam: since 2015; and China: since 2015).Consignment TIER Coat processing (Taiwan: 2011 to 2013; Korea: 2013; and China: since 2015).
This company is recommended by the following support organizations.
- 公益財団法人 いわて産業振興センター
- Tohoku Head Office, SMRJ