09:00

Conference introduction

09:25

KEYNOTE: Advanced printed electronics in mass production of printed security features

There are now numerous areas of application in which printed and organic electronics are used. Its advantages, such as compactness, cost and energy efficiency even pave the way for it into the broad mass markets and open up undreamt-of technical and design possibilities for many industries. Although the core area of Witte Technology was (and still is) label and security printing, we decided early on to include printed electronics in our service portfolio. As a result, we quickly realised that there are interesting synergies between the different segments, particularly with regard to digital and printed security features. We offer flexible sensors, leakage detection, sensor elements, and smart labels. We mainly rely on R2R screen and flexo, as well as S2S screen printing in cleanroom conditions.

Dr Philip Renners, Witte Technology

09:50

Fully screen-printed capacitive keyboard

We will present fully screen-printed capacitive keyboards composed of four different ink layers: two layers of encapsulant inks, one of conductive ink and the final layer of thermoplastic glue. The capacitive keyboards is printed on a sacrificial substrate and then transferred onto the final support (fabric, leather, etc.) by using a printing press, tuned at a set pressure and temperature. The encapsulant ink, characterised by a high dielectric constant, allows that the contact of the operator’s finger on a specific area of the conductive circuit changes the electrical capacity of the system. The variation of the electric field is processed by an electronic controller in order to perform the desired functions. The keyboard is composed by a part that is fixed to the final support and by a part, a sort of an electric cable, that is self-standing and free to move, with a common crimped connector at its extremity. The fully screen-printed capacitive keyboard allows to meet all the customer requirements in terms of design and chemical and mechanical resistance.

Giulio Rocco, Epta Inks

10:15

UV LED curing in screen printing industrial applications

UV LED curing has been well established in wide format digital applications; however, we are just starting to see the UV LED revolution and adoption into more complex industrial applications and a more comprehensive range of print technologies like screen printing. We will discuss the implementation process and the challenges associated with new application areas for UV LED curing.

Holly Steedman, IST INTECH

10:40

Coffee break

11:20

UV LED inkjet process for the automotive industry

Pollution and VOC emissions caused by overspray coating in the automotive industry are a challenge to combat. This study presents a method of printing personalised patterns on non-stick clear-coated (varnished) surfaces using only one UV LED ink to achieve good adhesion and a glossy surface. It includes three processes: surface pre-treatment, an undercoat and a topcoat by varying the parameters of the printer and the UV LED. First, the pre-treatment involves activating the polyurethane coating with the UV LED. Second, a strong adhesion between the undercoat and the topcoat can be achieved by jetting small droplets. Third, a smooth and glossy surface can be achieved with delayed polymerisation. The experimental results of the adhesion test meet the requirements of the industrial application. Moreover, the process is easy to set up, with zero VOC emissions and low energy consumption.

Hao Chen, HMR Expert / Stellantis

11:45

Customisation of inkjet inks and systems: A collaborative approach

Inkjet printing technologies are getting more advanced, which opens new applications. Often these applications are getting more complex and various factors influence the quality of the final print result. When ink manufacturers and integrators work together these challenges can be solved in the best way for the final customer. In this presentation, IdeeGo and Siegwerk will explain the key success factors for a collaborative approach on customized inkjet inks and systems.

Christian Göbel, IdeeGo and Adrian Haas, Siegwerk

12:10

Industrial inkjet in manufacturing: Printing onto difficult plastics with UV inks

Jochen Christiaens, Zeller + Gmelin

12:35

Direct to shape printing with NC generated trajectories

Florian Fässler, Polytype

13:00

Lunch break

14:30

Ultrasharp drop visualisation for ink development and printer optimisation

Fernando Rodriguez, Meteor Inkjet

14:55

Big data for inkjet printing optimisation

Optimising printing parameters for novel inkjet applications relies on time-consuming iterations by rare specialists, with results entirely dependent on their expertise. Droptimize develops a more robust and reproducible workflow based on the fusion of conventional drop watching with big data software. This unique combination allows to automatically test hundreds of sets of printing parameters, store the resulting drop characteristics in a database, and finally compare them to identify optimums and instabilities. Having full control of the software enables iterations not only over the waveforms, but also over the temperatures, flowrates, and any other relevant parameters. We believe this unique approach is a first step toward the standardisation of inkjet parameter tuning and could lead the way to fully automatized optimisations in the future.

Raphaël Wenger, Droptimize

15:20

The power of image inspection and machine learning

This presentation delves into the synergistic potential of image inspection techniques and machine learning to revolutionise inkjet printing quality and digital printer performance. The interplay between image and sensor analysis and machine learning is explored as a dynamic solution for identifying and rectifying print defects and optimising overall system performance. This approach will empower inkjet printers to detect anomalies and optimise print outcomes. The approach combines integration of image acquisition, feature extraction, and model training – culminating in a framework for real-time print quality enhancement. The presentation underscores the impact that image inspection and machine learning can have to inkjet printing applications.

Simon Edwards, Global Inkjet Systems

15:45

Coffee break

16:25

Accelerating the transition from inkjet R&D to production

In this session, ImageXpert will discuss new technologies for evaluating and optimising the inkjet process in R&D and production. These tools allow you to build a better understanding of your inkjet process, improve the performance, and accelerate the rate of development. We will explore the latest analysis tools, from new dropwatching technologies to smarter prototyping printers.

Kyle Bell, ImageXpert

16:50

Additive, digital processes in electronics manufacturing

The production of electronic devices is a wasteful undertaking. Notion Systems has shown with a large and diverse installed base in various industries, that additive processes, in particular functional inkjet printing, already have a positive impact toward production efficiency. Inkjet is used to reduce waste and process steps to make the production of current electronic products more efficient and sustainable. In this presentation we will provide insight into the aspects that drive sustainability in electronics production and will discuss application examples.

Dr Kai Keller, Notion Systems

17:15

Impact of Digital Front-End selection for industrial inkjet solutions

The selection of Digital Front-End (DFE) systems is critical to success in industrial inkjet solutions. What people think they want, is different from what they really need. This presentation explores the most important questions of DFE selection on the industrial printing landscape, encompassing technological advancements, cost optimisation, customisation capabilities, workflow integration, and future-proofing strategies. It highlights the latest innovations in DFE technology, emphasising their capacity to enhance print quality and productivity. Additionally, it underscores how strategic DFE selection can lead to substantial cost savings through efficient workflows and reduced material wastage, while also addressing the demand for personalised printing solutions. The presentation offers practical insights for stakeholders, providing a holistic understanding of how the DFE selection influence success in the ever-evolving inkjet solutions sector.

Haresh Joshi and Marcelo Tomoyose, Fiery

19:00-21:00

Networking reception

09:25

KEYNOTE: TBA

TBA

09:50

Where does digital fit in industrial applications?

Businesses that use print within their manufacturing processes will be looking at the potential efficiency and capability enhancements offered by digital printing. Join Fujifilm as we explore the integration of digital print in industrial applications, and the role that ink chemistry plays in selecting the right technology. The talk will address three fundamental questions: 1. What advantages does digital printing bring compared to conventional printing processes? 2. How can digital printing be used alongside existing conventional printing to maximize overall value? 3. What prerequisites must be met for digital printing to fully replace conventional printing methods? This talk promises a comprehensive exploration of digital printing in industrial applications, viewed from both commercial and technical standpoints.

Rachel Li, Angelique Runacre, Fujifilm Ink Solutions Group

10:15

Integrating inkjet into your production process: Think INK first

Inkjet printing is becoming popular to use for industrial applications, whereby the printing becomes part of the product. The printing step needs to fit within the total manufacturing flow to deliver the end-quality of the product. Inkjet consumables (inks, primers, varnishes) need to be developed in function of the printing unit as well as the application. The world of decorative printing is full of examples whereby inkjet printing is being used successfully to bring value to the industry and the consumers. Several specific cases of decorative printing will be explained in detail. This includes describing the product, the manufacturing flow, the inkjet printing solution, combined with the design of the inkjet fluids to deliver the product quality in all its aspects.

Dr Marc Graindourze, Agfa

10:40

Coffee break

11:20

Inkjet printhead design for industrial applications

Shear-mode piezoelectric printheads offer low drive voltages and long lifetime with excellent electromechanical coupling efficiency, allowing for reliable industrial applications in various fields. One key attribute of the shear-mode printheads is their capability to produce fine-tuned droplet size for each individual nozzle to enhance overall gradation and uniformity. Furthermore, the printheads cater to a wide range of jetting viscosity, suggesting a much broader viscosity compatibility when coupling with recirculated ink heating. For high-speed multi-drop operation, we present the features of the printhead adapted for achieving jetting stability at high frequencies.

Dr Mei-Feng Wong, Toshiba

11:45

Modular integration from printhead to systems

Kyocera has been expanding application field of inkjet technology by offering high performance printhead KJ4 Series. Furthermore, the latest platform KJ4EX Series has raised the standard of productivity of inkjet equipment by the enhanced stability and throughput. After four years from the first introduction of the 600dpi model, 1200dpi is finally added to its line-ups. Design features of this new model is to be discussed. A high resolution printhead is suitable for high-definition printing naturally. But it requires deep technical understanding to maximise its benefit. So, Kyocera Nixka Inkjet Systems S.A.S. has been established to spread the value of the technology for more variety of layers in the industrial printing market by offering print engine products Genix, Lenix and derived printing systems using KJ4EX Series. Technical outline of these products are to be introduced with the design philosophy.

Shin Ishikura and Jean-Marc Pasturel, Kyocera Nixka Inkjet Systems

12:10

Digital textile printing: Preparing for a new market

Digital printing is increasingly finding its way into the textile printing industry. Not only for the sake of the environment, advantages are apparent in many respects. The switch to digital printing also speaks for itself in terms of the environment and working conditions for employees in this industry, and with regard to ever smaller batch sizes, one becomes more adaptable and flexible. Whether we are talking about printing on corrugated cardboard, textiles, glass, metal or building materials, decor printing or additive manufacturing, printheads have to respond to the individual requirements of each of the sectors. We will address all of these aspects in his presentation and show how Seiko Instruments have adapted to these new, challenging but at the same time extremely exciting sectors.

Fabio Tallarico, Seiko Instruments

12:35

TBA

Ricoh

13:00

Lunch break

14:30

Smooth flow is key: Diaphragm pumps and their journey to low pulsation

While diaphragm pumps are well established and offer many benefits for printing systems, pulsation has still been a hurdle for ink transfer. This presentation shows the journey towards new technologies for liquid diaphragm pumps and how they help reduce costs and integration efforts thanks to their remarkably low pulsation. But the road does not end there, as these smooth flow solutions open up new possibilities for intelligent functions that simplify integration even further and allow the pumps to communicate with your system.

Stephan Engel, KNF

14:55

Jetting functional fluids: Up-scaling from laboratory to industrial production

Implementing an inkjet solution to industrial processes can create incredible advantages, as well as open up new opportunities for manufacturing. However, scaling up a solution from a proven laboratory method to a mass-manufacturing environment is surprisingly difficult. In our presentation, we will give a breakdown of some of the challenges that need to be overcome in order to achieve this successfully. Some key aspects covered are: motion system, drop placement, jetting speed and drop size, jetting distance, multiple printhead arrays, printhead alignment, ink supply, curing and drying.

Georg Boedler, Inkatronic

15:20

World of infrared: Exploring diversity and differences

Vincent Krafft, Heraeus Noblelight

15:45

Coffee break

16:25

TBA

Enrico Sowade, Epson

16:50

Leveraging printheads for 2.5D relief on glass and other industrial applications

Dr Mark Bale, DoDxAct

17:15

New printhead designs and ink delivery system for industrial inkjet printing

The talk will discuss the importance of ink recirculation and look at a range of new printhead designs. Other aspects such as ease of integration and improved sensing and monitoring capability will also be discussed. Following this, different approaches to ink delivery system design will be summarised. Finally, a range of typical integration configurations of printhead and ink delivery system enabling printing for different applications with a new ink delivery system will be presented.

Adam Strevens, Neatjet

19:00-21:00

Networking reception

09:50

Towards full roll-to-roll printing of electronics

The world demands smart products with new functionalities and seamless user experiences. However, today’s electronics are the limiting factor for real innovation – they do not allow much form-factor freedom, nor are they sustainable. Printed electronics is a true game-changer which offers form, functionality and desirable user experience, with the added benefit of being sustainable. Roll-to-roll manufacturing of printed electronics is of particular importance, since it enables products that are hitherto not possible, or possible with many limitations. In this talk, the significance, possibilities and challenges of full roll-to-roll manufacturing of printed electronics will be discussed, with concrete application examples.

Dr Ashok Sridhar, Tracxon

10:15

Functionalisation of 3D mechanical components with thin-film printed sensors/actuators using robot assisted inkjet technology

Inkjet is an extremely versatile technology, with smart adaptabilities for accurately depositing thin-films which possess electronic functionalities. It contributes to printed electronics (PE) development, on planar and 3D-surfaces. Deposition of these PE thin-films on 3D-surfaces is sophisticated, demands high-precision printing, pre- and post-treatment tools, along with suitable integration strategies, coupled with 6-axis robot. Here, we want to demonstrate realisation of PE applications, focusing on functionalised 3D-mechanical-components (3D-MC) e.g. grippers equipped with PE sensor/actuator, that could be implemented and utilised directly within a production line where the goal is to obtain high degree of variability or addressability. Depositing PE layers on 3D-MC is highly complex, relating directly to 3D-MC’s geometrical surface complexity and robot’s addressability to execute those process-step routines, and hence, the conformability of thin-films to demonstrate necessary sensor/actuator response. Equipment, deposition set-up, integration concepts, process methodology and realisation steps, along with challenges, are shown for achieving thin-film functional sensors/actuators on 3D-MC, for measuring gripping force and inhibiting heating.

Dr Kalyan Y. Mitra, Fraunhofer ENAS

10:40

Coffee break

11:20

nanoInk: From decorative to functional printing

The inks of tomorrow will not only have decorative, but also functional and active properties, e.g. electrical and thermal conductivity or shielding and sensing functions. This becomes possible by the growing technical progress and large-scale availability of nanotechnologies, enabling new innovative products, e.g. in the field of printed electronics. Yet, the development and formulation of such inks remains a complex task and requires a thorough understanding of the relationships between the individual parameters (including printhead, ink and substrate). Further, looking at the ink components alone is not enough to develop a well-thought-out and sustainable print product. Rather, the entire value chain, including process technologies, analytics, recycling, as well as regulatory and safety issues must be considered. To this end, the network nanoInk has brought together interdisciplinary experts from the fields of raw materials, ink formulations, printing processes, and analytics. Jointly the partners realise new high-performance applications and products from decorative to functional, as well as new process technologies and analysis tools for the formulation and characterisation of inks and coatings. nanoInk currently has 14 members and offers companies and research institutions alike a platform for the exchange of technical information, targeted cooperation and the implementation of innovative products and applications.

Dr Justus Hermannsdörfer, Nanoinitiative Bayern

11:45

Navigating new frontiers in high viscous inkjet printing for expanded material applications

In recent years, printhead technologies have evolved considerably. New printhead manufacturers such as Quantica, but also established manufacturers, are constantly expanding their printhead portfolio – pushing the limits of inkjet. As a result, the range of materials that can be processed is constantly increasing. However, systematically opening up new fields of application with these technological developments also brings new challenges. This starts with the need for extended material characterisation, the adaptation of printing process strategies and extends to the printed product. Using practical examples in the field of 3D-printed electronics and high viscous inkjet printing of dental resins in the dental sector, we will take a closer look at these challenges for materials and processes.

Jan Christoph Janhsen, Fraunhofer IPA

12:10

Multifunctional fully-printed piezoelectric devices

Recent breakthroughs in material science and manufacturing methods have opened new avenues for creating piezoelectric materials using printing technologies, enabling their application as versatile sensors, actuators, and generators. These adaptable devices play a pivotal role in developing advanced robotic skin and flexible medical tools. The spotlight is on printed solutions due to their lightweight nature, pliability, and suitability for high-throughput manufacturing. This revolutionary approach offers significant advantages in integration and a multitude of possibilities for cost-effective industrial applications. This review delves into distinct system parameters, identifying influential factors affecting the production of dependable flexible printed piezoelectric devices. Notably, emphasis lies on screen printing as fabrication method and the established piezoelectric polymer, poly(vinylidene fluoride-co-trifluoroethylene). Ultimately, we explore the incorporation of these techniques into supple, stretchable substrates via printing, shedding light on manufacturing trends for economical production of pliable piezoelectric devices for electronic skin and smart wearables.

Marc Alique Garcia, Eurecat

12:35

TBA

Kao Chimigraf

13:00

Lunch break

14:30

ACT-3D: Screen printing and thermoforming results

Dieter Reenaers, Hasselt University

14:55

ACT-3D: Laser coating results

Thomas Mager, Fraunhofer IEM

15:20

ACT-3D: Connection technology results

Kai Werum, Hahn-Schickard

15:45

Coffee break

16:25

ACT-3D: Enabling challenging electronics and photonics applications with 3D ceramic circuits

Frederik Luppens, CERcuits

16:50

ACT-3D: Enlarged security coverage through an ACT-3D partnership  

Steven De Weirdt, Cennox and Sarah Theelen, Chiyoda

17:15

ACT-3D: TBA

TBA

19:00-21:00

Networking reception

09:00

KEYNOTE: The EU Green Deal & Chemicals Strategy for Sustainability: Predicting the impact on the industrial printing sector

The EU Green Deal, including the Chemicals Strategy for Sustainability ‘Towards a Toxic-free Environment’ was first announced more than three years ago, in the early days of the current European Parliament. As the term of this Parliament draws to a close, the authorities are now in the process of presenting their formal proposals for the new legislation, and industry can more clearly appreciate the potential impacts, both direct and indirect. Apart from significant revisions of the two core pillars of our chemicals legislation (REACH and CLP), several other initiatives are being pursued which are likely to bring changes to how the European printing ink industry functions. This presentation will provide a brief overview of the status of these future regulations, as well as try to predict the impact of these on how our industry formulates and uses inks, as well as considering the role that inks can play in realising the objectives of the Green Deal.

Trevor Fielding, European Printing Ink Association

09:25

Balancing performance and sustainability in inkjet inks – it is possible!

Environmental concerns and shorter job runs in film- and paper-based flexible packaging drive the need for water-based inkjet inks. The expansion of water-based inkjet into printing for flexible packaging will depend on two opposing, mutually contradicting demands. Easily re-solubilised inks with long open times need to enable precise dot positioning without excess spreading and inter-colour bleeding. In this talk, two novel concepts for addressing these two demands separately will be presented. What if you could use a dispersing additive that would either give a pigment dispersion void of co-solvents, however, easily re-solubilised, or a pigment dispersion that promotes film formation properties? The latter concept represents a perfect combination partner for dedicated primers, allowing control over ink spreading and dot sharpness. Two concepts that give the formulator the freedom to balance performance and sustainability into an optimised water-based inkjet ink.

Dr Vedran Durasevic, Evonik

09:50

Reduce, reuse, recycle: How UV LED container inks make printing more sustainable

The presentation will show how inks can reduce the environmental impact of printing waste, enable container reuse and improve the recyclability of glass. It explains the benefits of UV LED technology for container printing, such as lower energy consumption and longer lamp life. It also presents application examples of direct UV LED container inks in different industries such as cosmetics, food and beverage. The presentation concludes with a summary of key findings and recommendations for the future of sustainable container printing.

Tobias Lang and Alexander Suckfüll, Marabu

10:15

Sustainability, energy cost reduction and productivity increase with UV LED curing

Sustainability in view of climate change has gained top priority, not only for the environment and mankind, but also for brand owners, who are now all having sustainability programmes established, committing their print product suppliers to more environmentally-friendly and resource-saving production processes. Additionally, not only since last year’s geopolitical disruptions, energy cost went through the roof, putting high pressure on profitability and margins in print production. Optimised use of existing production resources is also a main factor to meet the goal of saving energy, emissions and cost. Traditional thermal and mercury arc lamp UV curing have fallen out of time. UV LED curing as the most efficient curing technology available today, is a powerful contributor on hand to address these issues. UV LED curing does not only reduce energy consumption and emissions substantially, it also increases productivity and print equipment uptime to keep cost under control, and to increase tight profit margins.

Dirk Exner, Phoseon

10:40

Coffee break

11:20

Driving (inkjet) inks towards sustainability and circularity using nature’s building blocks

Developing (inkjet) inks from scratch is often not an easy feet. Over the years, ChemStream has been developing and improving in-house methods for designing and formulating (inkjet) inks and its components such as dispersing agents, binders etc. Using this know-how, ChemStream is incorporating sustainable and circular solutions into both water-based and UV-curable inkjet inks, through the design and synthesis of new polymeric dispersing agents (with an extra focus on bio-based building blocks). These allow for an improvement on dispersion/ink sustainability as well as an increase in flexibility for ink formulation. In this lecture, we will shed some light on the development and implication of this know-how and how it benefits ink quality and performance.

Nils De Vos, ChemStream

11:45

Sustainability to the point. OEKO-TEX standards for input, process, and output control

John Murphy, Hohenstein and Eliav Priel, Nur Ink Innovations

12:10

Shining a light on sustainable printing: The power of infrared drying

The presentation will first cover the topic of infrared radiation, including its various wavelengths, differences, and modes of operation. It then focuses on the specific area of shortwave infrared radiation, also known as NIR. Its high-energy mode of operation makes it highly effective in the printing industry, outperforming conventional hot air-drying methods. NIR radiation has the ability to penetrate ink, resulting in faster drying times and improved product quality. Using a recent practical case study, the audience will learn how to optimise energy efficiency and production speed on a printing press. Electrically powered NIR-infrared systems offer the opportunity for the use of renewable energy sources, which can help to reduce the dependency on fossil fuels and to lower the emission of CO2. By implementing these systems, companies can make significant strides toward meeting their environmental goals while improving their bottom line.

Heiko Wettengl, Micor

12:35

UV LED measurement for print applications: Why, how and what do I measure?

The use of UV LEDs for industrial print applications continues to increase. In many print applications, UV LEDs are a printer’s interaction with a UV source. LEDs are a stable, high power, long lasting and dependable source. If UV LEDs are stable, then: Why should I measure the UV output from a LED?;  How do I measure UV LEDs?; What would I do (besides panic) if my print process stopped curing tomorrow? This presentation will address the “why”, “how” and “what” of measurement including key terms, radiometer basics and the differences between measurement of an UV LED and mercury source. It will cover process variables in print applications, tracking and communication of data and instrument selection, use and care. UV LED measurement and process control is an important part of your success that contributes to your bottom-line success.

Jim Raymont, EIT 2.0

13:00

Lunch break

14:30

NIR hybrid drying technology: Effective energy input in the circulation process

The market for drying systems will change in the coming years. Energy and emissions are key drivers. Analogue drying systems, as they are currently still used in many printing applications, will have to disappear. The answer is digital drying technology – and the very flexible and targeted use of hybrid elements. By selectively combining NIR and IR with air, hybrid drying technology works for a variety of surfaces and with more functionalities. These systems are also put into practice in digital printing through special air flow management and design. Here, additional demands are placed on the machine construction, so that these dryer systems can do their job effectively right next to the printheads. The modular design of the systems ensures a high degree of adaptability to the processes. With the monitoring elements in the dryer units, these dryer systems are prepared for industrial use in Industry 4.0. The result is digital drying technology in which all components can be controlled and monitored.

Gunther Ackermann, Lambda Technology

14:55

UVC-LED update and influence on UV curing

During the last years some completely new branches of UV curing technology have found their way in the adhesive, printing and coating industry. As an alternative to conventional UV curing through medium pressure lamps we can now make use of UV-LEDs. Long wavelengths of UVA-LEDs have already found their place in many curing applications. But long wavelengths also show disadvantages, like insufficient surface curing. UVC-LEDs may help to solve this issue, as short UV-irradiation is known as surface active and helps to improve crosslinking densities on the surface of the coating, ink or adhesive. Thanks to increasing power and efficiency, UVC-LEDs have now become more interesting for UV-curing applications. This paper will give an overview of the state-of-the-art of UVC-LEDs and possible use for UV-curing applications.

Petra Burger, Dr Hönle

15:20

Thermal laser processes for printed electronics

Diode lasers are by far the most efficient method of applying thermal energy to NIR absorbing materials. Fortunately, most conductive inks absorb the 940 nm of the Hamamatsu cw SPOLD laser, allowing a homogeneous and fast sintering result comparable to current thermal post-processing methods. In addition, the laser is versatile for other processes relevant to the printed electronics market, such as laser soldering or encapsulation. The use of line beam optics favours scalable, yet supremely sustainable high volume production, for example in R2R machines or ITO touch display manufacturing.   
Hamamatsu's in-house laser and optics development enables customisation to specific requirements, materials and processes. Highly experienced application engineers are involved in the technical discussions from the very beginning and support the customer with on-site laser tests to find the best processing conditions. The important and challenging step "from lab to fab" is always supported by the Hamamatsu team.

Alexander Görk, Hamamatsu

09:00

KEYNOTE: Scalable manufacturing process of perovskite solar cells by inkjet printing

Perovskite solar cells hold immense promise in the renewable energy sector, offering high efficiency and cost-effectiveness. Nonetheless, the journey towards commercialisation has been riddled with hurdles, with one of the primary challenges being the transition from laboratory-scale coating processes to large-scale production. Addressing this challenge head-on, Saule Technologies has emerged as a pioneering company specialising in the production of perovskite solar cells using inkjet printing technology on thin, flexible substrates at low temperatures. In this presentation, we will delve into the exciting possibilities of upscaling perovskite solar cell technology through inkjet printing. Leveraging our extensive industrial experience, we will shed light on both the advantages and disadvantages of employing inkjet printing in the research and production of thin film solar cells, offering valuable insights into the path ahead.

Dr Barbara Wilk, Saule Technologies

09:25

Plasma for perfect inkjet printing

Printing on polymers, but also on glass and metals, can be very challenging in regards of achieving good adhesion of the print, as well as good wettability of the inks on the surface for perfect readability and brilliance. We will explore the difference between corona and plasma treatment, and adhesion mechanism involved in good adhesion. We will discuss how plasma treatment improves adhesion and wettability, especially in terms of de-wetting and pinholing behaviour and how to get the best treatment results when using plasma treatment, especially on polymers. Furthermore, we will explore the cleaning properties of plasma treatment and how plasma technology can be implemented and successfully used in production.

Peter van Steenacker, Tigres

09:50

Uncovering answers around universal surface appearance measurement

The inks and coatings industry is for many reasons focused on high reflective surfaces in relation to appearance measurement. But as the development of testing applications broadens, is this viewpoint too narrow? Innovations in this area show that it is now possible to measure all surfaces and define the surface from all angles available. Recent explorations into gloss and haze analysis mean effective analysis concerning low gloss surfaces is now possible. We are ready to share our insights surrounding new views on reflection and projection – providing thoughts around unanswered questions and changing the metrology and interpretation of commonly used appearance parameters.

Alistair Kerrigan, Industrial Physics

10:15

Optimising ink stability: How to mix the perfect ink formulation

The stability of any ink formulation is important to ensure consistent quality during storage, transport, and the printing process. Inks can be classified as liquid dispersions, consisting of a main liquid phase, in which particles are dissolved. The stability of liquid dispersions describes how long a dispersion retains its original properties, such as particle size and particle distribution, under given storage conditions. To analyse liquid dispersions quantitatively and in their original concentrations, DataPhysics Instruments present the MultiScan MS 20 Dispersion Stability Analysis System. Smallest changes in particle size and particle distribution can be analysed with its optical stability measurement method, even in opaque mixtures and at temperatures between -10 °C and 80 °C. To validate the application of the MultiScan MS 20 in the printing industry, we will present a comparison of sample inks using different stabilisers and show how to contrast the destabilisation rates of both samples.

Daniel Scholz, DataPhysics

10:40

Coffee break

11:20

Particle sizing with DLS and SPOS – valuable tools for ink characterisation

In order to optimise the grinding process in ink manufacturing, particle size information is crucial. Whereas Dynamic Light Scattering (DLS), based on Brownian motion reveils the center of ink particle size distributions which is typical in the 200-400 nm region, the Single Particle Optical Sizing (SPOS) technique measures precisely any particle above 0.5 µm. Especially ink quality control relies on SPOS in order to identify unwanted oversized particles that might block the nozzle in inkjet printers causing high replacement cost. Typical measurement results will be presented.

Dr Wolf Wagner, Soliton

11:45

How to optimise particle suspensions using Hansen solubility parameters

Formulating stable particle suspensions is of great interest to the ink industry as it allows them to enhance the properties and the lifetime of their products. Overall, the choice of the stabilisation medium is the key factor to avoid particle agglomeration before adding additives (surfactants, polymers etc.) which are, most of the time, quite expensive. Hansen’s approach can be adapted to describe the particle stability in various solvents by using three different parameters δD, δP, and δH which are representative of the interactions between the particle and the dispersion media.

TBA, Formulaction

12:10

Integrating inkjet chemistry into digital printing solutions for metal applications

Simone Tardini, Sacmi and Phil Jackman, Sun Chemical

12:35

UV-LED: Applications and pitfalls

Users love the idea of saving energy by using LEDs instead of UV arc lamps and optimising downtimes by eliminating the need to change lamps regularly (and other wearing parts). For all new applications that use UV for the first time, this may be possible without further restrictions. But what does this mean for users who have already invested in a UV system based on UV arc lamps and now want to convert? Here, in addition to ecological (no mercury) and economic (energy savings on the one hand, possibly higher expenses for the paint/varnish systems on the other hand) considerations, it is also important to have the technology under control. The (electronic/conventional) ballast has to be replaced, the inks/pigments/ varnishes have to be matched to the LED wavelengths and, finally, the legal regulations have to be observed. “LED colours” are not yet approved in all cases. Here it makes sense to have a rescue parachute, i.e. not to carry out a final change from UV arc lamp to UV LED, but to rely on a variable “insert/changeover” system which then allows a quick change from UV arc lamp to UV LED and back. Special electronic ballasts that can control both UV arc lamps and UV LEDs, as well as interface cards that work between the existing controls and the UV sources, provide a remedy here.

Angel Aguilar, Uviterno

13:00

Lunch break

14:30

White pigment concentrate for digital ink with focus on a wide range of water-based applications

Dirk Imhof, Kronos

14:55

Bio and non-CMR material applied in the digital ink

In the realm of modern printing technologies, the choice of inks plays a pivotal role in determining the quality, sustainability, and safety of printed materials. This study presents a comprehensive abstract about the two prominent categories of inks: bio-inks and non-CMR (carcinogenic, mutagenic, and reprotoxic) inks. Bio-inks, derived from renewable resources, offer a sustainable alternative to traditional petroleum-based inks. They exhibit reduced environmental impact and biodegradability, while maintaining acceptable print quality. On the other hand, non-CRM inks address concerns related to hazardous ink components by excluding carcinogenic, mutagenic, and reprotoxic substances, ensuring safer work environments and consumer products. This abstract delves into the characteristics, benefits, and limitations of both ink types, highlighting their impact on print quality, environmental sustainability, and human health. The findings emphasise the significance of informed ink selection for diverse printing applications in an increasingly environmentally conscious and eco-friendly society.

Tom Lin, Encres Dubuit

15:20

Aqueous printheads and inkjet ink: Resolving development hurdles

Developing an aqueous printhead presents significant challenges, particularly concerning material compatibility tests and the shelf life of bulk piezo printheads. The rapid diffusion of ink into the printhead channels through barrier layers exposes critical components like insulated electrodes, wire bonding, and electronics, leading to performance deterioration, nozzle plate delamination, and printhead failure. Water’s presence introduces its unique bulk and dynamic properties, such as speed of sound and dynamic surface tension, impacting fluid interaction within the printhead micro-channels during waveform actuation. This poses further challenges during ink formulation and jetting reliability. We will explore (i) challenges related to prolonging the shelf life of aqueous printheads and the key features adopted to mitigate ink diffusion and component exposure, and (ii) optimisation of aqueous inks for reliable jetting using advance ink fluid map characterisation procedures. Understanding how these dynamic ink properties influence the process will aid in formulating and fine-tuning dependable inkjet inks and expedite waveform development, ultimately enhancing overall printing performance.

Dr Tri Tuladhar, Trijet

09:25

In-mold technology for labelling, decoration, and electronics. Market data and insights. AWAVirtual™ In-Mold Technology Platform

Anum Javed Beg, AWA

09:50

From the BOPP process to the development of film trends

Simone Baldin, Taghleef

10:15

In-Mold Decoration and Film Insert Molding for printed electronics: State of the art in printing process and ink-layer combinations

This presentation will show the advantages of screen printing versus other printing techniques. The IMD/FIM process steps, from screen printing, through to high-pressure forming, UV curing, trimming and back moulding will be shown by means of serial automotive parts. The requirements on the final automotive parts are getting tougher. Therefore, the adhesion in compound (ink/film/injection moulding material) needs to be nearly undetachable and the surface hardness of film or first surface lacquer needs to be chemical and abrasion resistant. We will present layer constructions to improve cohesion and will display the resistance properties of dual cure screen printing lacquers. Last but not least, IMD/FIM automotive parts are functional. Therefore, the printed inks must be non-conductive. We will show a range of non-conductive colour shades to prevent interaction and interference with the conductive pastes.

Dr Hans-Peter Erfurt, Pröll

10:40

Coffee break

11:20

Decorating polystyrene puzzle pieces straight from the moulding tool and going straight to the printing line

Klaus Ammann, Mankiewicz

11:45

Full automatic screen printing solution for FIM and large format frontends

Thieme

12:10

Panel discussion:  The future of in-mould technologies