Antistatic fluororesin coating for hoppers | Prevention of static electricity problems
Eliminate powder adhesion and discharge risks caused by static electricity. Smooth self-weight drop with a conductive coating! Prevent bridging and avoid raw material loss and dust explosions.
This is a technical case study for metal hoppers used for the feeding and supply of powder and powdered materials in various industrial manufacturing lines, featuring a fluororesin coating with antistatic (conductive) properties. The coating forms a high-performance film with a uniform thickness on the tapered (inclined) surfaces of the hopper, weld seams, and discharge outlets. **Main Improvement Effects from Implementation** - **Prevention of Powder Adhesion and Bridging Due to Static Electricity** The coated film with antistatic properties suppresses the generation and accumulation of frictional static electricity, shutting out the adhesion of powder to the inner walls. This prevents blockages (bridging) and the rat-hole phenomenon, allowing for smooth gravity discharge. - **Improved Conveying Efficiency & Reduced Material Loss** Eliminating powder adhesion and retention enhances the response for feeding and supply. It minimizes the residual amount within the hopper, reducing the loss of valuable raw materials. - **Prevention of Dust Explosions Due to Static Discharge (Sparks)** By effectively dissipating static electricity, it prevents discharge sparks. This reduces the risk of fire and dust explosion from combustible dust, creating a safer working environment.
basic information
【Construction Technology】 Electrostatic Discharge Prevention Fluororesin Coating "Pass-e Coat" 【Technical Features and Functions】 ■ Excellent Electrostatic Discharge Prevention and Conductivity Reduces the leakage resistance value of the coating film, effectively suppressing the accumulation and charging of static electricity due to powder abrasion. ■ High Slip and Non-Stick Properties Supports the release of fine powders and viscous powders due to the unique low friction characteristics of fluororesin. ■ Prevention of Electrostatic Discharge (Sparks) Reduces the risk of dust explosions and fires when handling flammable powders. ■ Uniform Coating on Tapered and Welded Areas Forms a film without pinholes even on inclined surfaces and discharge points where thickness unevenness is likely to occur, including welded areas. 【Applicable Substrates and Parts】 ■ Feed Hoppers, Supply Chutes, Cyclones, Powder Storage Tanks, Weighing Buckets ■ Various metal equipment such as Stainless Steel (SUS304/SUS316L), Carbon Steel (Steel), and Aluminum.
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Pass-e Coat
Applications/Examples of results
**Main Application Areas and Processes** ■ Chemicals, Resins, and Battery Materials Feeding and weighing line for resin pellets, synthetic resin powders, and positive and negative electrode materials for secondary batteries. ■ Pharmaceutical and Cosmetic Manufacturing Hopper self-weight drop process for liquid drug raw materials, granulated powders, and granulated bodies. ■ Food, Confectionery, and Milling Feeding supply hopper for wheat flour, sugars, spices, and powdered seasonings. **Case Study of Problem Solving** ■ Issue In a chemical plant, when feeding dry powder into the hopper, frictional static electricity with the inner wall caused the powder to adhere and stick, frequently resulting in bridging (clogs). Workers had to hit the hopper to dislodge the powder, leading to decreased production efficiency, and safety measures against dust explosions due to static electricity sparks were a concern. ■ After Implementation Anti-static fluoropolymer coating was applied to the inner surface of the hopper and the discharge outlet. ■ Effects and Results - Static electricity was suppressed, allowing the powder to drop smoothly without stagnation. - Bridging and material residue were significantly reduced, eliminating spark risks and improving explosion safety.
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Nikken Coating Industry Co., Ltd. has been a specialized manufacturer of functional coatings for contract processing, earning the trust of customers across various industries for 79 years since its founding. We leverage our processing technology to maximize the properties of fluororesins, such as non-stick, lubricity, and chemical resistance, providing high-performance coatings that directly address customer challenges, including "Thermo Pro Release" for thermal welding processes and "NonStick STC" for blades and precision molds. In recent years, in response to movements regarding regulations on fluorinated compounds (PFAS), "PEEK resin," which is gaining attention as a substitute for fluororesins, has become a focus. Nikken Coating Industry commercialized the world's first PEEK resin coating, "PEEKCOAT," in 1999. Based on the solid knowledge and know-how accumulated over more than 20 years, we are further intensifying our research and development efforts to explore the potential of next-generation PEEK coatings! We aim to be recognized as "the go-to for PEEK coatings" and will continue to lead the way. As "the best partner for functional coatings that builds trust through technology," Nikken Coating Industry will continue to contribute to the creation of high-quality, high-performance products.