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European Coatings Conference
Extra
Pre-Conference Tutorial
05 December 2007
Berlin, Germany
Main conference
"The Power of Ink-Jet Materials V"
06/07 December 2007
Berlin, Germany
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 Welcome
At a Glance
Tutorial
Abstracts
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| Events > The Power of Ink-Jet Materials V > Abstracts |
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MAIN CONFERENCE: Abstracts
| THURSDAY, 06 December 2007 |
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Session I: Technology & Materials
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Taking Ink Jet Experience into new Technologies
Peter Walshe, Sunchemical, UK |
The presentation will cover the following points:
- Ink and Ink Jet: the Background
- Evolution of ink jet inks for graphics printing
- Emergence of ink jet materials for manufacturing
- Fluid types applied as ink jet materials
- Case studies:
Screen pre-press
Photovoltaics
Printed circuit boards (PCB)
- Summary
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Development of a Drop-on-Demand Micro Dispensing System
Wei Fen, National University of Singapore, SG |
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This paper presents the development a drop-on-demand micro-dispensing system on which functional devices can be directly printed in a layer-by-layer manner that is commonly used in Rapid Prototyping and Manufacturing processes. The principle is to form micro droplets on substrate that requires accuracy and consistency with the ability to build 3D model. It requires heating of material to a desired temperature and viscosity which allows the piezoelectric the ability to pump out. In order to build a 3D model, a basic XYZ-axis gantry, motion controller and dispenser with temperature controller were developed and integrated. Experiments with different materials were carried out to understand the influences of the dispensing parameters on continuous frequency output. The results hold attractive potential for the use of this system in fabricating 3D models which meet the accuracy and resolution needs for various industry applications.
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The effect of single- and double-layer porous media structure parameters on the absorption of microdrops
Yu. D. Varlamov, Institute of Thermophysics, RU |
The presented investigation is performed within the framework of more common problem that may be titled as virtual printer.
This direction bases on a modeling of sequence of processes at ink-jet printing including:
- explosive boiling of liquids on a multilayer film microheaters;
- gas dynamics interaction of drop jets during printing;
- spreading and absorption of droplets.
The numerical simulation of the mentioned processes, along with experimental verification, allows to visualize process of printing, to demonstrate the effect of main factors determining printing quality and to optimize conditions of printing.
In particular we studied:
- the effect of liquid properties and heat conditions on explosive boiling;
- the effect print carriage design (carriage speed, print head-paper distance, arrangement of nozzles, quantity of firing nozzles, frequency of ejection, and sizes, velocity and quantity of ejected droplets) on gasdynamics instability of process, change of droplet motion trajectories;
- the effect of ink properties and structure parameters of multilayer porous media on the duration of droplet absorption, the liquid distribution in porous media and size of formed spot;
- the effect of relative location of deposited drops of various color on the distribution of a liquid in a porous media, contrast and local color of image.
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Functional Nanoscaled Inks for Printed Electronics
Dirk Godlinski, Fraunhofer Institute for Manufacturing Technology and Applied Materials Research IFAM, DE |
Functional Printing combines the structuring possibilities of digital, non-contact printing technologies like ink-jet or aerosol printing with the functionality of metallic or ceramic nano-materials to generate functional structures like conductors or sensors. Typically, for full functionality the structures have to be thermal consolidated after printing in a furnace or by means of a laser - depending on the thermal sensitivity of the substrate.
The presentation describes the complete process chain starting from the formulation of adequate printable inks, the printing processes, the possibilities of thermal treatment, and the functional characterisation of printed electronics. Commercial Ag inks are compared to Ag nano-inks that are produced a) in pilot plant scale by sputtering metal clusters into a printable liquid at low vacuum, and b) by dispersing agglomerated Ag nano-powder via a milling process.
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High Volume Inkjet printing of conductive tracks and anti-scratch coatings
Mike Johnson, Conductive Inkjet Technology, UK |
Mike is responsible for bringing new technology to Carclo Technical Plastics. In his presentation he will describe two separate uses of inkjet for putting functional coatings onto plastic substrates.
Firstly he will describe the work for applying anti-scratch coating onto injection moulded plastic optics, where Carclo was the first company to work on the concept and now apply it to volume automotive parts.
Secondly he will describe the ability to print conductive tracks – a technology which led to Carclo winning the Plastics Industry Award for the Best Technology Achievement. This is a unique technology which leads the way in producing low cost RFID antennas and other functional circuitry.
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Inkjet Printing of Functional Materials for Applications in Biotechnology and Polymerelectronics
Wilhelm Meyer, microdrop Technologies GmbH, DE |
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Session II: Manufacturing & printed electronics
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Single Pass Digital Production: Application, advances and advantages of Ink Jet as an industrial production method
Rich Baker, Fujifim Dimatix, USA |
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Digital ink jet technologies have frequently been adopted or proposed as the method of choice for industrial fabrication for new exotic materials and applications. Increasingly, however, they are finding successful application in mundane, commodity, product fabrication. This paper will review the various ink jet print technologies and provide pros and cons of Thermal, Piezo and Continuous ink jet, for use in industrial applications. Discussion will then move to the various criteria that need to be considered, to assess whether digital fabrication is appropriate. These criteria range from economic considerations to process practicality. Finally, several examples of commercial use of ink jet as a production tool will be highlighted, ranging from high end electronics device fabrication, to digital coatings to food decoration.
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Drop-on-demand printing of ceramic pigments for decoration
Dr. Stefan Güttler, Fraunhofer Institute for Manufacturing Engineering and Automation IPA, DE |
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| FRIDAY, 07 December 2007 |
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Session II: Manufacturing & printed electronics (continued)
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Ink-jet as digital fabrication tool for hierarchically structured membranes
Stephan Jahn, Technical University Chemnitz, DE |
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Inkjet Printing of Metal-Dielectric-Metal Crossovers
Prof. Stephen G. Yeates, University of Manchester, UK |
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Next Generation of Electronic Hardware Integration
Matti Mäntysalo, University of Tampere, FI |
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The development in semiconductor and packaging technologies have enabled the development of modern electronics, i.e. digital cameras, mobile phones, music players, and personal digital assistances (PDA). However, new technological solutions and innovations are continuously needed in order to continue the development and integration of electronic devices. In this paper, the technology development from SMT based electronics to high-density electronic modules and substrates based on direct writing technologies is discussed. Three dimensional molded interconnection device (3D MID) and printable electronic technologies are used to integrate electronic and mechanic functions together proving high-density electrical modules and multilayer interconnections on substrates.
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Printing on hydrophobic surfaces during Ophthalmic RX production
Gerold Simke, Laser 2000 GmbH |
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In precision optic or ophthalmic production process the ink marking has been proven to be the proper process. But the consuetudinary technology of pad printing is restricted by the limited number of available clich. For various kinds of optical surface applications the trend goes to more flexible prints. We present a new technology getting rid of the pad printing restrains. Based on the Ink-Jet principe it leads to an attractive way out of existing limitations. These systems are even predestined for full automatic assembly lines. Needless to mention that non absorbing surfaces require a special ink handling. Here a special matching between ink and optical surface established the base for the proper adhesion. This can be a removable as well as permanent print. It is patent pending technology and has become a trendsetter in ophthalmic industry within the last two years
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On demand manufacture of automotive components by 3D-printing
Ingo Ederer, voxeljet technology GmbH |
The answer of Europes industries to a raising global competition is an increased product variety linked with shorter product life cycles. This trend demands for new flexible production methods with less product specific investment. The key word is tool-less or digital production.
3D-printing could become a major factor in this context, if certain requirements like part quality and material properties meet the application.
Like no other layer based process 3D-Printing combines cost effectiveness with build speed and process stability.
Voxeljet uses these benefits for small volume manufacture of metal casting sand moulds. This article presents some interesting application samples.
Voxeljets latest development are 3D-Printers using technical thermoplastics as source material. Currently available is PMMA also known as acrylic glass which can be processed with high resolution and accuracy. Typical application samples were presented as well as related commercial issues. The article finishes with an outlook for future trends.
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Advances in Industrial Inkjet Printing: Material Deposition
Applications
Ian Rees, Xennia UK |
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