Welcome to the official website of the VIP+ project T-paper carried out by the Institute for Print and Media Technology at Technische Universität Chemnitz, Germany.

Basic facts

  • Main aim: roll-to-roll printed loudspeaker paper
  • Funding scheme: VIP+ by Federal Ministry of Education and Research (BMBF)
  • Duration: 01/05/2017 – 30/04/2020
  • Budget: 1.37 Mio. EUR


T-Book at LOPEC 2018

While the T-Paper crew at pmTUC is continously developing new printing process technology for the R2R realisation of the sounding and sensing paper, our first application demonstrator – the T-Book 2 – will be presented for the second time to a broad audience. This time, the book will be visible (and of course audible) at …


pmTUC has developed a technology which allows the manufacturing of loudspeakers solely by means of conventional mass printing technologies on flexible substrates like foil or even paper. More precisely, we are talking about printed piezoelectric loudspeakers, i.e. a piezoelectric crystal transfers an applied AC voltage to a mechanical deformation and a vibration of the whole substrate. If the frequency of the AC signal is in the frequency range of 20 Hz to 20 kHz, audible sound is generated.

In our case a piezoelectric polymer is sandwiched between two organic electrodes, i.e. we have truly fully plastic speakers without magnets. All layers can be printed step by step on a substrate but thanks to new developments during the last three years, we are now able to integrate all electronic layers within a special paper – the tone paper – or shorter T-paper – was born making it possible to print on both sides of the paper color pictures or whatever you are used to print (or write) on paper. The printed electronics part keeps hidden and invisible.

At the starting point of this project, the realisation of the T-paper is based on a semi-automatic sheetfed process with low efficiency and throughput. However, first applications could be successfully demonstrated like the T-book in 2015 – a unique photo book with speaking images.

Now, main aim of the VIP+ project T-paper is to transfer the inefficient sheetfed manufacturing to a high-throughput roll-to-roll pilot line at one of pmTUC’s R2R printing presses. This includes the development and validation of a stable R2R printing process of all functional layers, the inline polarisation of the piezoelectric material but also post-press technologies like lamination and folding.


Based on a long tradition in conventional printing press engineering, the Institute for Print and Media Technology at Chemnitz University of Technology (pmTUC) has established itself as a research and teaching institution which combines traditional paper-based media and new digital technologies. Cooperation and scientific partnerships with many well-known companies of the national and international media, electronics and chemicals industry prove the esteem for the scientific work of the pmTUC, headed by Prof. Dr. Arved C. Hübler. Webpage: http://www.tu-chemnitz.de/pm

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