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  3. 澁谷工業
  4. Why does slurry settle? An explanation of the causes of instability after dispersion and key points for dispersion design and process improvement to prevent settling.
OTHER
  • Apr 14, 2026
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Apr 14, 2026

Why does slurry settle? An explanation of the causes of instability after dispersion and key points for dispersion design and process improvement to prevent settling.

澁谷工業 澁谷工業
Even slurries that appear uniform after dispersion often face challenges of instability in quality due to sedimentation and separation over time, which is commonly observed in many settings. This phenomenon is not merely a result of insufficient stirring; it is influenced by the aggregation state of the particles, a lack of dispersion energy, and complex inter-particle interactions in the liquid. Particularly in the case of nanoparticles or high solid content slurries, even slight dispersion issues can significantly affect sedimentation behavior, leading to variations in product performance. Additionally, batch processing is susceptible to changes in state over time, making it difficult to ensure reproducibility. To suppress sedimentation, it is crucial to not only mix but also to break down particles to the primary particle level and achieve uniform dispersion. Furthermore, maintaining consistent shear conditions, as in inline continuous processing, can help stabilize the dispersion state and ensure uniform quality. Designing the dispersion state throughout the entire process is key to producing stable slurries that do not sediment.
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Here are the concepts of dispersed design and process engineering to prevent subsidence.
Sedimentation occurs not only in a dispersed state but is also influenced by the entire process, including shear conditions and flow design. Our company offers process engineering that takes into account energy density and reproducibility of dispersion conditions during scale-up, centered around inline continuous processing. We will provide detailed design points to suppress sedimentation and achieve stable quality.

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High-Performance Plastics Exhibition - Invitation to Exhibit at Plastic Japan

From October 29 (Tuesday) to 31 (Thursday), 2024! We will be exhibiting small ultrasonic dispersion devices and ultrasonic generators!

We are pleased to hear that you are doing well. Thank you very much for your continued support. We are excited to announce that our company will be exhibiting at the "13th High-Performance Plastics Exhibition - Plastic Japan" (Makuhari Messe). We will be showcasing the following equipment at our booth, and we would be delighted if you could stop by despite your busy schedule. * Inline Continuous Powder-Liquid Mixing and Dispersion System * Tabletop Inline Dispersion Device * Small Ultrasonic Dispersion Device * Ultrasonic Generator These products utilize continuous mixing and dispersion technology, which dramatically improves production efficiency compared to traditional batch methods. All of our staff are looking forward to welcoming you to our booth. 【Event Information】 * Dates: October 29 (Tuesday) to October 31 (Thursday), 2024 10:00 AM to 6:00 PM (until 5:00 PM on the last day) * Booth Number: Hall 6, Booth Number 35-26 (Plastic Japan Area) * For more details about the exhibition, please refer to the related links. You can download the PDF for more information or feel free to contact us.

  • Emulsifier/Disperser
  • Powder Supply Device
  • Dispersion/emulsification equipment/homogenizer

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Slurry dispersion and mixing system (for batteries and electronic materials)

Reproducibility of slurry dispersion is created from process design.

This is a solid-liquid mixing system designed to solve issues such as dispersion variability and agglomeration that arise in battery and electronic materials slurries, starting from process design. It optimizes dispersion, mixing, and supply as a single integrated system, achieving highly reproducible slurry production. It accommodates electrode slurries, high-viscosity slurries, and nanoparticle dispersions, enabling stable production through inline continuous processing. It supports consistent scale-up from research and development to mass production, balancing quality and productivity. If you are facing challenges with slurry dispersion, please feel free to consult us. We can also offer proposals for test verification and process design.

  • Emulsifier/Disperser
  • Dispersion/emulsification equipment/homogenizer
  • Vacuum degassing machine

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Battery slurry dispersion testing service

Verify before failing in mass production. Confirm the reproducibility of slurry dispersion in advance.

In the dispersion process of battery slurry, it is often observed that while dispersion can be achieved without issues during the research phase, it cannot be replicated during mass production, leading to quality problems. This is particularly true for positive and negative electrode slurries and CNT conductive materials, where variations in powder input conditions, dispersion energy, viscosity changes, and differences in process configuration can significantly alter the dispersion state and coating properties. Our service conducts dispersion tests at the lab scale based on the customer's materials and formulation conditions, evaluating the dispersion state, viscosity characteristics, and reproducibility. Furthermore, we support scale-up verification using small machines and pilot equipment, visualizing risks during mass production in advance. This is not just a simple test; through verification that delves into process design, we assist in reducing troubles during the transition to mass production and shortening the startup period.

  • Emulsifier/Disperser
  • Dispersion/emulsification equipment/homogenizer
  • Vacuum degassing machine

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Related catalog(1)

Inline solid-liquid mixing dispersion system

Inline solid-liquid mixing dispersion system

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Hyper CLT flooring panel

Civil engineering site considerate of the neighborhood | Hyper CLT flooring

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In civil engineering sites, there are many instances where temporary roads, access routes, material storage areas, and pedestrian pathways use wooden boards. In residential areas, near schools, hospitals, and stores, the noise from construction, glare, and the appearance of the site can affect the impression on nearby residents, so consideration for temporary materials is required. Hyper CLT boards are civil engineering materials that utilize wood CLT. As wooden boards, they can be used as an alternative to steel plates, for muddy ground measures, ground protection, heavy machinery scaffolding, and worker pathways. The unique texture of wood provides a softer impression compared to metal plates, contributing to the improvement of the site environment. Additionally, they can be used as materials for proposals that address neighborhood concerns and environmental considerations, such as reducing metal noise, suppressing glare, and fixing CO2. The 5×10 board weighs approximately 230 kg, and the 5×20 board weighs about 460 kg, making them lightweight and easy to handle even with small machinery. As a registered technology with the Ministry of Land, Infrastructure, Transport and Tourism under NETIS "TH-250021-A," they are also recommended for innovative ideas and safety measures in public works. We encourage you to consider creating civil engineering sites that take into account the surrounding area. We can also propose locations and quantities tailored to site conditions. Please feel free to contact us for material requests or consultations on implementation. They can also be utilized in urban construction and private projects. Don't hesitate to reach out.

Jul 25, 2026

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Fukuda's leak test, leak inspection, leak detection, leak test, integrity test.

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Fukuda Co., Ltd. has been pursuing leak detection for 60 years and is committed to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing properties. We will propose the appropriate testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Jul 24, 2026

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Hyper CLT flooring panel

Impressing the site with the presence of wood | Hyper CLT flooring

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In civil engineering sites, there are many instances where temporary roads, access roads, heavy machinery work yards, and material storage areas use ground plates. While conventional steel plates are practical, they can sometimes fail to leave a lasting impression when it comes to the appearance of the site and conveying the company's initiatives. Hyper CLT ground plates are civil engineering materials that utilize wood CLT. As ground plates with the texture of wood, they can be used as a substitute for steel plates, for mud prevention, ground protection, and ensuring pedestrian pathways. By introducing them in visible areas such as site entrances, morning assembly locations, and around break areas, it becomes easier to create an impact that differs from traditional sites. The 5×10 plate weighs about 230 kg, and the 5×20 plate weighs about 460 kg, making them lightweight and easy to handle even with small machinery, which helps reduce construction burdens. They also offer advantages such as glare reduction, noise reduction, and environmental considerations unique to wood, making them suitable for innovative public works projects. Registered as a Ministry of Land, Infrastructure, Transport and Tourism NETIS technology "TH-250021-A," they are recommended for companies aiming to create a distinctive impression at their sites. We can also provide consultation for small lot introductions and suggest usage methods tailored to site conditions. Why not add a clear change to your civil engineering site with these new wooden ground plates?

Jul 24, 2026

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Metal Crack Repair: MS Method for Repairing Cracks and Fractures in Machinery Equipment

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Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding methods for repairs can change the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" and "secondary damage." Hinode Waterworks Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for metal crack repairs without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material at all. Repairs can be made 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 or download the catalog.

Jul 24, 2026

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■■ Air Leak Tester | FLA-0200 / FLA-0201 series ■■ Fukuda's new flagship model. Equipped with mastering correction function, it enables high-precision measurements in a short time.

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Fukuda's new flagship model. - Masterless type (FLA-0200 series) - General type (FLA-0201 series) Two models of air leak testers. With the mastering correction function, high-precision measurements can be achieved in a short time. Please take a look at the catalog.

Jul 24, 2026

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