Short courses offer an excellent opportunity to further your knowledge on various topics of interest in the R2R processes. You do not have to be registered for the full conference in order to participate in one or more short courses. Those registered only for short courses are welcome to attend the Monday evening Welcome and Tabletop Exhibition
8:30am - 5:00pm
8:30am - 12:00pm
1:30pm - 5:00pm
1:30pm - 5:00pm
This course is aimed at providing an overview of roll-to-roll vacuum deposition. There are different aspects to producing good vacuum deposited coatings. It requires a good vacuum combined with well controlled deposition sources depositing coatings onto equally well defined web surfaces. This course will help operators put each of these different aspects into context and help them to understand where and how improvements might be made.
This course starts with a brief description what a vacuum is, the gauges and the pumps. Following this, process diagnostics and control, leak testing and troubleshooting are addressed. We will then move on to the substrates and relate the substrate quality to the coating quality. This will include the cleanliness of the surface of the substrates and how they can change with time and what can be done to modify the surface including pre-treatments and planarisation and post deposition coatings. This will be followed by looking at how the substrate needs to be managed through the deposition process where the heat load is frequently an issue. We will then look at the range of deposition sources that can be used which will include resistance heated evaporation sources, electron beam evaporation sources, magnetron sputtering and chemical vapour deposition with a brief resume of a number of other less often used sources. A number of the sources can be used as a metal source with a reactive gas added to allow compounds to be deposited by the reactive deposition process. This can be alumina deposited from the resistance heated evaporation sources in a simple metallizer through to reactive magnetron sputtering where the control of compound stoichiometry needs to be precise enough to control the conductivity of transparent conducting coatings. Other topics that will be mentioned are pattern metallization, system design considerations, including system cleaning and preparation, and hazards. This course is aimed at giving delegates a rounded view of most aspects of roll-to-roll vacuum coating.
The last stage of many R2R processes is the production of a wound roll. Many operations struggle to achieve adequate and consistent roll quality, and end up with additional costs from scrap, customer complaints, loss of business and inability to sell into demanding markets. This course will explain the contributions of web material, equipment and conditions to winding problems. Delegates will learn about the causes of roll defects and their solutions. This will enable improvements to wound rolls and bring business benefits.
The instructor is Dr Dilwyn P Jones, who has 34 years’ experience of web handling and winding. He has presented courses in-house to several companies Europe-wide, as well as through AIMCAL at conferences and schools since 2004. He consults on web handling, plastic film technology and applications, and maintains a keen interest in scientific progress in the area, especially modelling. He will review the well-known fundamentals of winding, but also add in new material relevant to current products and processes.
"Fundamentals, Barrier Concepts, Measurements and Recent results"
General Aspects from Production to Characterization, and finally their Application"
This course provides an overview of the technologies that can be applied for the production of barrier materials for markets such as food packaging, displays, photovoltaics and vacuum insulation panel applications. Fundamentals of gas and water vapor permeation mechanisms through barrier materials will be discussed to provide an understanding of the contributions and limitations to materials and processes.
A brief summary of the various permeation measurement techniques, mechanical tests for the characterization of barrier materials will be given. Recent results will be presented on a case-by-case application.
Who will benefit from this course?
Engineers, designers, quality control, and production personnel working at the production facilities of flexible barrier materials, and converters, or personnel dealing with the application of the high barrier materials in a final product.
The slot die approach provides many benefits, such as higher line speed capability and greater coat weight uniformity. To realize these benefits, the coating system as a whole must be designed to exacting tolerances based of the rheological characteristics of the fluid. The slot die can then achieve defect-free coatings with increased production speeds, positive coat weight control, controlled cross-web distribution and improved waste management.
This class will cover:
Rheology is a fundamental requirement of slot die coating technology. The study of fluid flow provides the basis for equipment design and process development. Shear rate versus viscosity data will be explained and basic formulas will be presented for understanding.
A slot die fluid coating system consists of more than the slot die. A variety of equipment is required for precision coating such as positioners, backing rolls and other ancillary equipment depending upon your substrate and application. These components will be highlighted.
When it comes to slot die coating, understanding the process and the desired outcomes is central to developing a fluid coated product. Slot die fundamentals, limitations of slot die technology and various types of applications will be presented. An understanding of statistical process window development will also be provided.
There are multiple ways to utilize a slot die for fluid coating. Both direct and indirect methods will be presented including curtain coating, lane coating, intermittent coating and tensioned web over slot die (TWOSD) applications.
Coating Defects and Resolutions
Common coating defects and the appropriate troubleshooting plan will be provided.