三重塗料 List of Products and Services

The "Titan Coat," registered with NETIS, excels in long-term corrosion resistance for steel structures, achieving salt damage resistance, safe and secure construction, shortened construction periods, and reductions in initial costs and life cycle costs (LCC). It is a re-corrosion progression suppression type (rust conversion type) coating that can be utilized for extending the lifespan of structures such as bridges. By processing the substrate with a surface preparation of grade B or higher, it achieves rust prevention equivalent to the Rc-1 coating system. Since it does not require blasting treatment, it minimizes human and environmental impacts from dust and alleviates labor shortages. This method has accumulated over 1,000 construction achievements and is a rust conversion type anti-corrosion coating method called "Earth Coat," which adopts and inherits the same anti-corrosion substrate as its rust prevention layer while enhancing the durability of the protective layer. The protective layer uses inorganic fluororesin paint, forming a siloxane bond coating with excellent salt damage resistance, achieving high durability with outstanding weather resistance, pollution resistance, acid resistance, alkali resistance, bend resistance, and crack resistance. Additionally, it can reduce industrial waste disposal costs and temporary scaffolding protection costs. 【Features】 ■ No blasting treatment required ■ Achieves long-term corrosion protection ■ Possible to shorten construction periods, as short as 2 days ■ Expected durability of 64 years

• Special Construction Method

The "Crystal Jewelry Construction Method" is a waterproof fluorescent clear resin anti-corrosion coating system that forms a transparent film, making maintenance and management easy while suppressing rust progression. It is a "special clear silicone resin paint" that excels in anti-corrosion, weather resistance, deformation followability, and ozone resistance, and can be seamlessly applied to steel, concrete, and rubber, effectively suppressing corrosion at the boundaries of components. This method is effective for repair measures near bearings aimed at prolonging the lifespan of steel, rubber, and concrete structures such as bridges, preventing corrosion and deterioration. 【Features】 - Can be seamlessly applied to steel, concrete, and rubber, effectively suppressing corrosion at the boundaries of components. - Forms a transparent film, making maintenance and management easy. - Although it is a transparent film, different colors appear when exposed to black light, preventing missed spots and stabilizing quality. - Can achieve a longer lifespan for areas near bearings that are prone to corrosion with approximately two to three types of surface preparation. - Excellent waterproofing properties, providing waterproof effects even in areas susceptible to water influence. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor
• paint

Environmental conditions in Okinawa Prefecture: - In addition to the conditions of heavily salt-damaged areas in Honshu, it is under a high-temperature and high-humidity environment for almost the entire year. - The distance from the coastline is short, resulting in significant influence from high-concentration salt carried by the sea. - Being close to the equator and having high levels of ultraviolet radiation creates a harsh environment where steel materials are prone to corrosion. - Research shows that the average corrosion rate is 2 to 10 times higher. Main causes of re-corrosion: 1. When newly constructed bridges are exposed outdoors, the coating on the steel deteriorates over time. 2. Water and air infiltrate through fine scratches and cracks that develop in the coating. 3. Corrosive factors come into contact with the steel surface, leading to corrosion. - In cases where the corrosion area is treated with sanding and repainting specifications, 4. Even if the steel surface is exposed through sanding, there may be residual rust that cannot be visually confirmed. 5. It is difficult to completely remove chloride ions that are attached to the rust inside. The durability of areas that have experienced corrosion is significantly inferior compared to when they were newly constructed, leading to relatively early re-corrosion of the coating. Why can long-term rust prevention effects be expected with Earth Coat? - Long-term corrosion prevention is achieved through a special function that incorporates a patented rust-inhibiting additive (Patent No. 3796580). - It can suppress corrosion acceleration caused by deliquescence due to salt damage.

• Bridge Construction

At Sanju Paint Co., Ltd., we sell various types of paints, painting machinery, and painting accessories, and we also have related materials available. This time, we have prepared the necessary documents for consideration and implementation of painting systems. We will clearly explain the outline of the construction method, performance comparisons, systems that lead to cost reductions, and necessary items for implementation in an easy-to-understand flow format and diagrams. 【Contents】 ■ Measures based on the presence of harmful substances ■ Utilization of new technologies in long-term repair plans & cost reduction ■ Thorough comparison of the "Rust Conversion Type Anti-Corrosion Coating Earth Coat Anti-Rust Painting System" and "Conventional Method Painting Systems" across 13 key items of interest *Please view the technical materials in PDF format available for download.

• Plastering and painting work
• paint

The "Rust Conversion Type Anti-Corrosion Coating Earth Coat Anti-Rust Coating System" received an evaluation for its promotion as a useful technology in NETIS, was selected as one of the 75 effective technologies, and although its publication period ended in March 2022 with high praise, it has been utilized by many across the country, confirming good condition during post-construction inspections and receiving high evaluations compared to other methods. Due to its stability and safety, it is still being considered and adopted for many bridge repair projects. A comparison table for low-concentration PCB content is also prepared separately. We kindly ask you to read the attached comparison materials and consider them.

• Steel structure construction
• Road facilities
• Rust Inhibitor

Priority Support Project ◇ Projects utilizing new technologies ◆ Enterprises of municipalities that have established short-term numerical targets for long-term repair plans The basic items that should be included in the guidelines for long-term repair plans have been updated to include specific policies regarding cost reduction. (R3.4) How should cost reduction be specifically implemented? What are the major challenges in terms of current costs? ◇ Costs of blast method in conventional Rc-1 painting system (scaffolding, waste disposal costs, equipment) ◆ Costs of environmental facilities and safety and health protective equipment for coatings containing harmful substances ◇ Increase in LCC in Rc-2 and Rc-3 painting systems We propose solutions to clear these challenges and reduce initial costs and life cycle costs! ◇ "Earth Coat Anti-Corrosion Painting System" ◆ Neutral water-based stripping agent ECO "STRIPPER" [NETIS: CB-210014-A]

• Renovation and repair methods
• Rust Inhibitor
• Bridge Materials

Labor Standards and Health Regulations, Specific Chemical Substance Hazard Prevention Regulations, Lead Poisoning Prevention Regulations PCB Special Measures Law, Low Concentration PCB Waste Collection There are many laws regarding hazardous substances. We will introduce what kind of "environmental equipment," "safety and health protective gear," and "industrial waste disposal methods" are necessary in construction through a flowchart! ◆ What safety and health protective gear is needed for lead, chromium, and PCB? ◇ Appointment of a supervisor for specific chemical substances based on PCB content? ◆ What is the deadline for disposing of low concentration PCB waste? ◇ Implementation of lead-containing paint films by wet methods according to the Lead Poisoning Prevention Regulations? ◆ When should the hazardous substance content survey (paint film survey) be conducted? ◇ What is by-product PCB? We will clearly introduce the issues you face! *For more details, please refer to the PDF materials or feel free to contact us.

• Steel structure construction
• Rust Inhibitor
• Bridge Construction

The performance characteristics of sodium silicate-based impregnants are "reactive," allowing them to penetrate deeply when subjected to water curing. Therefore, the feature of maximizing performance was achieved through two applications (coating and water curing) × 2. However, the downside was poor economic efficiency. As solidified lithium silicate-based impregnants have been reevaluated, a significant price difference has emerged, leading to the introduction of sodium silicate products that do not require water curing and are effective with just one application. However, if the effect that is originally enhanced by water curing is considered to be 100%, it may drop to 60-70%. Moreover, there are four phenomena of concrete deterioration: carbonation, ASR (alkali-silica reaction), salt damage, and freeze-thaw cycles, which often deteriorate in a combined manner. Particularly in coastal and mountainous areas, salt absorption cannot be avoided. Ideally, after applying a lithium silicate-based impregnation that provides internal improvement effects, it is desirable to apply a water-repellent material that excels in suppressing moisture intrusion from the outside. This can help address issues related to construction period and costs. *For more details, please download the PDF or feel free to contact us.

• Reinforcement and repair materials

If the existing paint film contains harmful substances, combining paint removal work with long-lasting coatings can become costly. As a solution, in recent years, we have received many inquiries about methods that combine paint removal work with earth coat. We have compiled a list of frequently asked questions regarding the "Earth Coat Rust Prevention - Coating System." For more details, please contact us or download and take a look.

• paint
• Steel structure construction
• Bridge Construction

We often receive requests to see the construction site for paint film removal (using stripping agents), but please note that removal work involving hazardous substances requires licensed personnel and safety training, and entry is prohibited for unauthorized individuals. Therefore, we have prepared various videos showcasing the security room usage, stripping agent application status, paint film sampling status, and more, which many of you are curious about. You can also view them from the URL below. *For more details, please refer to the catalog available for PDF download or feel free to contact us.

• Bridge Construction
• paint
• Steel structure construction

We, who love the seas and nature of Okinawa Prefecture, have created a catalog dedicated to Okinawa with a heartfelt commitment to preserving that nature. This product is a stripping agent used for removing coatings, and it is widely used in projects such as bridges. While various considerations are necessary for its application, we believe it is important to anticipate unexpected events, and we have pursued safety in this method. In recent years, there has been an increase in cases of sudden heavy rain, such as downpours and linear flood zones. Conventional stripping agents pose risks, such as causing vegetation to wither, and if the components of the stripping agent are washed away due to rain, there are concerns about ecological impacts on agricultural products and coral as they flow from rivers to rice fields and the sea. Amidst this, we have successfully developed a neutral water-based stripping agent, ECO "STRIPPER," which excels in stripping power. Even at a concentration of 150 mg/L, the swimming inhibition rate for copepods is 0%, and the growth inhibition rate for algae is -2.1%, demonstrating extremely low ecological impact and excellent safety. It has been adopted by NEXCO Okinawa and civil engineering offices in Okinawa Prefecture. *For more details, please view the catalog from the PDF download or feel free to contact us.

• Bridge Construction
• paint
• Steel structure construction

This construction method excels in peel strength, workability, and safety, and is designed as a peeling agent method that ensures and confirms safety, particularly considering unexpected situations as an environmental consideration. Recently, there has been a noticeable increase in unexpected natural disasters, such as sudden heavy rains and prolonged rainfall. Therefore, when considering the impact of heavy rain during the application of the peeling agent method, it is conceivable that sudden heavy rain could cause water to flow into the expansion joints or that horizontal rain could wash away the peeling agent. In such cases, concerns arise regarding the impact on rivers and rice fields. Consequently, STRIPPER conducted growth inhibition tests on Daphnia magna and algae. The results showed that even at a high concentration of 150 mg/L, the growth inhibition rate for Daphnia magna was 0%, and the growth inhibition rate for algae was -2.1%, indicating that algae actually grew, confirming minimal ecological impact. Due to its safety and good workability, it has been adopted by the Ministry of Land, Infrastructure, Transport and Tourism, prefectures, municipalities, NEXCO, and others even before NETIS registration. *For more details, please view the catalog from [PDF Download] or feel free to [Contact Us].

• Bridge Construction
• paint
• Steel structure construction

Rust conversion coatings come in a wide range of products, from household paints to heavy-duty anti-corrosion coatings used for structures like bridges. To use an analogy with automobiles, while the role of "running" is the same, the capabilities vary from compact cars to sports cars. The same applies to rust conversion coatings; although they may turn black, they can sometimes yield less than satisfactory results. Therefore, we applied Earth Coat to a rusted steel surface (test plate) and removed the coating after several years using a stripping agent, then investigated the physical properties of the steel surface. The results showed that before application, the steel surface had a significant amount of red rust (Fe2O3 hematite), but three years after application, black rust (Fe3O4 magnetite) was definitely present, and red rust (Fe2O3 hematite) was not detected. It was concluded that Raman analysis is considered the most effective method for qualitative analysis of the surface near the steel. Since this method has yielded good results in testing, we hope it can serve as one of the criteria for determining whether this method's performance is equal to or better than other methods. For more details, please inquire or download and review the information.

• paint
• Bridge Construction
• Steel structure construction

The coating system "EarthCoatSystem" is a highly durable and long-lasting painting system that excels in salt damage resistance. *NETIS Registration Number: KK-110056-VR 【What's Amazing! EarthCoat Anti-Corrosion Coating System】 In addition to being classified as "VR" rank for NETIS utilization promotion technology, it has been selected by the Ministry of Land, Infrastructure, Transport and Tourism as one of the "75 technologies effective for bridge repair (measures)" among numerous NETIS registered technologies. Furthermore, it is also recognized for having overwhelmingly few significant issues after construction. 【Comparison with Conventional Anti-Corrosion Coatings】 ● With surface preparation of grade B or higher, it offers long-term anti-corrosion performance equivalent to or better than Rc-1 coating systems. ● Thanks to the quick-drying properties of the anti-corrosion paint, the construction period can be reduced by approximately 40% compared to conventional methods. ● The double protection function of the excellent weather-resistant intermediate and topcoats allows for long-term protection of the anti-corrosion layer and maintenance of anti-corrosion performance. ⇒ This contributes to total cost reduction, making it a must-see for those in charge of bridge repair design and maintenance! ◆ We are currently providing necessary materials for considering the coating system, including comparison tables of coating methods, cost reduction through system utilization, and measures against harmful substance content. ◆

• Bridge Construction
• Steel structure construction
• paint

The coating system "EarthCoatSystem" is a highly durable and long-lasting painting system that excels in salt damage resistance. This method is particularly effective in regions affected by salt damage to bridges due to airborne salt, especially during bridge repair work or repainting. *NETIS Registration Number: KK-110056-VR 【Current Situation of Corrosion Protection Coating for Bridges】 The corrosion protection manual clearly states that painting should be done within four hours after surface preparation. However, in reality, it is challenging to apply paint within that timeframe... Steel surfaces that have undergone first-class surface preparation tend to develop returning rust over time, which reduces the adhesion of zinc-rich paint and increases the likelihood of early defects. However, with EarthCoat, even minor returning rust can be managed, ensuring quality through rust conversion technology! ⇒ It is expected to be effective against the chronic issue of "returning rust." *For more details, please view the catalog from [PDF Download] or feel free to [Contact Us].

• Bridge Construction
• Steel structure construction
• paint

The coating system "EarthCoatSystem" is a highly durable and long-lasting coating system with excellent salt damage resistance. It is a reliable anti-corrosion paint that can be utilized in general environments as well as in areas with heavy snowfall and severe salt damage. *NETIS Registration Number: KK-110056-VR 【Challenges of Bridge Repair in Okinawa Prefecture】 - Due to being in a heavy salt damage area, it experiences high temperatures and humidity throughout the year, with a significant amount of airborne salt from the nearby coastline. - The ultraviolet radiation is also much stronger compared to the mainland, creating a harsh exposure environment for the coating (it is said that the corrosion acceleration rate is more than "twice" that of the mainland). ⇒ Despite such conditions, the "EarthCoat" painting system has numerous achievements in Okinawa Prefecture, with good conditions maintained even 12 to 14 years after application. 【Why is long-term anti-rust effectiveness expected?】 Long-term anti-corrosion is achieved through a special function that incorporates a patented anti-rust additive (Patent No. 3796580). This can suppress corrosion acceleration caused by deliquescence due to salt damage. *For more details, please view the catalog from [PDF Download] or feel free to [Contact Us].

• Rust Inhibitor

The coating system "EarthCoatSystem" is a highly durable and long-lasting coating system that excels in salt damage resistance. It is a reliable anti-corrosion paint that can be utilized in general environments as well as in areas with heavy snowfall and severe salt damage. *NETIS registration number: KK-110056-VR 【Adopted in the following sites!】 - Areas affected by salt damage to bridges due to airborne salt. - Areas affected by salt damage to bridges due to de-icing agents in snowy regions. ⇒ A must-see for those in charge of bridge repair design, maintenance personnel, and design companies looking to propose new technologies. 【Why can long-term rust prevention effects be expected?】 Long-term anti-corrosion is achieved through a special function that incorporates a patented rust-inhibiting additive (Patent No. 3796580). It can suppress corrosion acceleration caused by deliquescence due to salt damage. *For more details, please view the catalog from [PDF Download] or feel free to [Contact Us].

• Rust Inhibitor

"Concrete Keeper" is a concrete impregnation material primarily composed of lithium silicate, with the addition of silane. In addition to the permeability of silicate-based materials that could not be achieved with previous impregnation materials, it also possesses the wear resistance and sealing properties of silane-based materials. Furthermore, "Concrete Keeper Neo" is a topcoat material that enhances wear resistance and water repellency by applying it over "Concrete Keeper" after painting. [Features] ■ Permeability of silicate-based materials ■ Wear resistance and sealing properties of silane-based materials ■ Repair and deterioration prevention *For more details, please download the PDF or feel free to contact us.

• Reinforcement and repair materials

The "IPH method" is an innovative technique that uses a spring-type injector to maintain stable pressure while employing a uniquely developed "air release" technology to replace epoxy resin within cracks, allowing for the filling of even fine cracks. It enables injection into gaps of 0.1mm or less with an internal propulsion distance of over 30cm, simultaneously achieving the recovery and reinforcement of deteriorated concrete. Additionally, it realizes a 30% cost reduction compared to conventional technologies, improving economic efficiency by 76.9% over a lifecycle of more than 30 years. 【Features】 ■ Higher pressure stability compared to traditional rubber and balloon pressurization ■ Precise control of flow rate at low pressure, maintaining consistency ■ Viscosity that penetrates to the ends of fine cracks ■ Significantly contributes to aging countermeasures and longevity of concrete structures ■ Low noise, no vibration, and dust-free * Distributors in the Tokai and San'in regions * For more details, please feel free to contact us.

• Rust Inhibitor
• Reinforcement and repair materials
• Renovation and repair methods

The "EarthCoatSystem" is a rust conversion-type anti-corrosion coating system that enables the longevity of steel structures and reduces life cycle costs, ensuring the maintenance and security of safe and resilient infrastructure. By firmly reacting (rust conversion) with rust components during the anti-corrosion pretreatment and the anti-corrosion paint, it suppresses and adheres to the progression of rust, while forming a stable anti-corrosion film that exhibits greater rust prevention power than conventional coating systems. It has numerous achievements in the harsh conditions of Okinawa Prefecture and has received positive evaluations as a salt damage-resistant specification in coastal areas and heavily salt-damaged regions. 【Features】 ■ Long-term rust prevention and strong against salt damage ■ Shortened construction period ■ Cost reduction ■ Safe and secure construction ■ Assurance of repairable numbers *For more details, please download the PDF or feel free to contact us.

• Rust Inhibitor
• Plastering and painting work
• paint