IR Technical Education Institute to Host Online Seminar on Slot-Die Coating Theory and Practical Manufacturing Know-How

IR Technical Education Institute will hold an online seminar for engineers and researchers facing challenges in scaling up functional films and dealing with defects or production issues. The seminar offers a systematic way to learn the theory and practical on-site know-how of slot-die coating. Using diagrams and graphs, it will deepen participants’ understanding of coating phenomena, while exercises and quizzes will help them acquire criteria for judging whether coating is feasible and the key points of troubleshooting. In film development and manufacturing, defects and problems directly affect productivity and quality. At the same time, information on coating often has gaps: academic papers can be difficult to apply in practice, while on-site information tends to be know-how-heavy and hard to organize into a complete picture. There is a need to understand the causes of defects that emerge during scale-up and mass-production testing from both theoretical and practical perspectives, and to acquire reproducible decision-making criteria. Seminar overview: Seminar title: Optimization and High-Precision Control of Manufacturing Conditions for Slot-Die Coating Format: Online lecture via Zoom Date and time: Tuesday, June 30, 2026, 13:30-16:00 Fee: 19,800 yen, tax included Instructor: Nobuo Hamamoto, Representative of the Roll To Roll Research Group Course overview: This seminar explains the theory and know-how of slot-die coating in connection with on-site decision-making and condition design. It also covers scale-up issues, including common challenges in development, pilot production, and mass production; differences between laboratory work and Roll to Roll processes; and coating defects and causes that become apparent in mass-production testing. Seminar program: 1. Introduction - Coating and drying in development, pilot production, and mass production - Products using films, film elements, and structural elements such as thickness and number of layers - How to determine dry thickness, wet film thickness, and wet coating amount - Comparison of coating methods, development steps, and differences between laboratory processes and Roll to Roll - Coating defects and causes revealed during mass-production testing, equipment suited to scale, and liquid preparation scale 2. Slot coating - Slot-die structure, liquid supply methods, installation angle, thin and thick coating limits - Minimum film thickness, Ca number, coating window, and Couette-Poiseuille flow, including non-Newtonian fluids - Lip shape, vortices, OverBite and UnderBite, and operation without backside decompression - Simultaneous multilayer coating, including viscosity balance, interface position, vortex formation conditions, and precautions - Tensioned-web method, including tension and fluid pressure, gap estimation, coating window, and slot vortices - Die design methods, including manifold and slot flow, differential pressure, cross-sectional shape, tapering, machining methods, and adjustment bolts - Auxiliary equipment, including measures against backup roll deflection, shims, heat retention, and vacuum chambers - Handling of non-Newtonian viscosity, including power-law models, material balance, and shear-rate order of magnitude - Intermittent coating, including flow-rate and gap control, coating start and stop, tandem coating, and moving methods Intended participants: - On-site engineers and leaders involved in coating technology - Materials researchers involved in coating product development - Researchers working on battery coating, perovskite solar cells, optical films, adhesives, and barrier films Seminar details: https://nihon-ir.jp/seminar/slot-coating/ IR Technical Education Institute will continue to provide practical knowledge and know-how for manufacturing sites through technical education services for the manufacturing industry, including seminars, e-learning, training, and publications. Nihon IR Co., Ltd. has more than 50 years of experience in patent and intellectual property solutions. It also provides a wide range of highly specialized practical services centered on technology, including technical information research and analysis, technical education for the manufacturing industry, and technical content production. Company website: https://nihon-ir.jp/ IR Technical Education Institute: https://engineer-education.com/ Address: 3F CYK Kanda Iwamotocho, 15-1 Kanda Iwamotocho, Chiyoda-ku, Tokyo 101-0033, Japan Tel: 03-6206-4966