Improving the quality of web transport and extending roll lifespan: Suppressing scratches on products (workpieces) with a smooth surface! Strongly preventing roll wear caused by harsh continuous friction.
This is a technical case study for metal conveyor rolls (such as guide rolls and drive rolls) used in the high-speed transport and winding processes of web and sheet products like plastic films, paper, and metal foils, which have been coated with PEEK. It protects both the rolls and the conveyed materials in a transport line where continuous high-speed friction occurs. **Main Improvement Effects from Implementation** - **Prevention of Scratches on Films and Sheets (Protection of Counter Materials)** The moderate hardness and smooth coating surface of PEEK resin alleviate contact stress. It reduces scratches and abrasions caused by speed differences and slipping during transport, enhancing the aesthetic quality of the products. - **High Durability Against Harsh Continuous Abrasion** Coated with PEEK, which has the highest level of wear resistance and heat resistance among resins. It significantly suppresses wear and deformation of the roll surface caused by hard sheets and high-speed sliding, extending the lifespan of the rolls themselves.
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【Construction Technology】 Contracted PEEK Coating (Polyether Ether Ketone) 【Technical Features and Functions】 ■ Overwhelming Wear Resistance and Surface Hardness High toughness specification that is resistant to wear even under strong sliding friction and continuous contact. ■ Low Aggressiveness to Counter Materials Combines moderate flexibility and smoothness, reducing scratches on thin film and metal foil. ■ High Precision and Uniform Application Forms a uniform coating that does not compromise runout or geometric tolerances on the outer circumferential surface of rolls. 【Target Substrates and Applicable Parts】 ■ Conveyor rolls, guide rolls, drive rolls, pass rolls, nip rolls ■ Various metal rolls including stainless steel (SUS), steel, aluminum, etc.
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**Main Application Areas and Processes** ■ High-Performance Film and Optical Sheet Field Web transport lines for liquid crystal films, protective sheets, and double-sided tape substrates. ■ Paper, Metal Foil, and Converting High-speed coating, slitting, and winding processes for aluminum foil, copper foil, and ultra-thin paper. ■ Printing and Packaging Material Field Continuous conveyor transport sections for packaging films, building material sheets, and metal printing, etc. **Case Studies of Problem Solving** ■ Issues In high-speed transport lines for various films and foils, scratches (appearance defects) were occurring on product surfaces due to friction and speed differences between metal rolls and transport sheets. Additionally, the metal rolls themselves were locally worn down due to hard substrates and continuous sliding, leading to significant time and costs for regular roll replacements and polishing cleanings. ■ After Implementation PEEK coating was applied to the outer circumferential surface of the metal conveyor rolls. ■ Effects and Achievements - Scratches on transported items were eliminated, resulting in a dramatic improvement in product yield. - The wear resistance of the rolls was dramatically enhanced, significantly extending maintenance cycles and component lifespan.
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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.
