Inkjet Printing for Textiles:an enabling tool for realisingdigital workflows & mass customisation.dr. Pramod Agrawal & Ir. Ger BrinksRESEARCH CENTER DESIGN & TECHNOLOGYKom verder. Saxion.
Saxion as a knowledge institute switching from… education only ……………transfer of know how to universities of applied science ……………knowledge development and knowledge circulation/disseminationKom verder. Saxion.
Saxion facts and figures One of the biggest private institutes of higher education in the Netherlands 24.000 students (Enschede, Deventer & Apeldoorn) Education: 60 bachelor, 11 master, 7 associated degree studies 13 Academies Applied research: 6 knowledge centres and 40 chairsKom verder. Saxion.
Six coherent chairs at KC-DT/Saxion-Enschede Media Ambient Fashion Materials Technology Intelligence Design Design Societal Concept- Product- theme development development Product Market € Industrial Smart Functional Production- Design Materials and Process innovationKom verder. Saxion.
Research casting UTwente Saxion Industry Market Academic Innovative Development € research research > 4 yrs < 2 yrs 1 yr Chair Engineering of Fibrous Smart Materials (EFSM) at University of Twente Chair Functional Smart Materials at Saxion, KCDT, Enschede New knowledge available for the IndustryKom verder. Saxion.
Chair – Functional smart materialsKey research area Functionalisation of textile materials Inkjet printing / Digital processes Conductive yarns/ 3D prototyping Sustainability: from materials to processes functions Recycling Application of enzyme technology material surface engineering characteristicsKom verder. Saxion.
What are smart-technical textiles? Textiles Materials Electronics Conventional Textiles Technical Textiles Smart/Intelligent TextilesKom verder. Saxion.
Digital workflow Key components • Information/ knowledge flow • Materials flow The nature of Digital workflows • Adoptive system: it adapts to changing conditions by target- oriented responses so that particular function can be performed. • Anolog-digital control / Hybrid control: when a master controller operates on an underlying analog cycle sequence to achieve a high degree of long-term constancy.Kom verder. Saxion.
Why Digital workflow? • European textile sector: need for bulk production to mass customisation. • Market positioning of high performance & functional clothing. • Fundamental redesign of the entire garment industry chain. • Minimising accidents during the production. • Improved precision, reducing mistakes. • Value addition. • Sustainability. • Recyclability. Key DriversKom verder. Saxion.
Technology drivers for Digital workflows Technology • Nano ProductsScience • Bio• Physics • Polymer Production• Chemistry • electronics Market• Technical • ICT Systems €• ……many others • Production • ..many others “Enablers” Social trends and themesKom verder. Saxion.
Digital printing Decrease in rotary screen printing (will go slow because of install base) 50 (% of printed textile volume) In use 25 10 0 1980 1990 2000 2010 2020 2030 2040Kom verder. Saxion.
Mass customisation / Digital workflow - Inkjet printing as a process enabling technologyKom verder. Saxion.
Application trends Graphical Printing Functional Printing Marking/coding Martin et al. J. Phys.: Conference Series (2008) vol. 105 pp. 012001Kom verder. Saxion.
Market demands: Graphical textiles printing • Productivity: 20 – 30 m2/hours • High resolution: e.g. fine tie patterns • Support for various fabric types • Colour reproduction: better than screen printing • Strike-through: colour permeability to rear surface • High colour fastness: equal fastness to screen printing • Low running cost.Kom verder. Saxion.
DReAM – Reggiani Macchine, Italy• Roll-to-roll configuration• Fabric width: 1.6 – 2.2 m• Speed: up to 190 m2/hr with 600 dpi resolution• Allows instant change of design pattern• DOD technology / piezoelectric Scitex heads• It utilises 7 printing heads for six colours (42 printing heads on one bridge)• Substrate: Virtually any flat surface (textiles, leather) http://www.youtube.com/watch?v=8ItROq-l1aM• All ink chemistry possible (direct, reactive, pigment, disperse etc.)Kom verder. Saxion.
Functional digital printing – an overviewKom verder. Saxion.
Our choice: DoD / Piezo Inkjet – PIJDoD technology: Deformation of a piezo crystal which leads to a volume alternation in the ink chamber and finally to a drop ejection. No squeezing!Fabricators: Epson, Xaar, Spectra, Brother, Mimaki, TektronikKom verder. Saxion.
Applications: Functional printing functional printing • printed electronics • chemistry / medicine • process engineering • rapid prototyping printing of an solar cell RFID antenna, www.solarzelle.net TU Chemnitz process requirements • reliable • variable print pattern • high resolution and accuracy • flexible ink and substrate Silver tracks on polyimide, Harima PIJKom verder. Saxion.
Digital finishing processFunctional digitaal finishing proces (Realising reliable digital processing in the textiles industries) Kom verder. Saxion.
Grasping opportunities of global trendKom verder. Saxion.
Saxion – the offer• Basic theory course on Digital printing/finishing & Digital Workflow.• Six month minor program: new product development in the area of functional smart materials.• International Masters: The students works on actual R&D projects sponsored by the industry or having a pure academic interest.• Participation in RAAK and EU projects,• Commercial R&D facilities: Project from textile and related industries in terms of innovation vouchers or project grant.Kom verder. Saxion.
Saxion other facilities User Test lab Materials studio Materials development lab: FabLab Ambient embedded systems labKom verder. Saxion.
Statement & Solution… “…For its survival the textile industry has to be transformed from a labour intensive business towards a knowledge intensive business…” “…Digital printing of functional materials by specially designed inkjet-printers is driven by the emerging need for mass customization feasible through digital workflows...” Thanks for your attention!!!Kom verder. Saxion.