Spiropen Algae-based felt markers made from Spirogyra and PLA The Spiropen can be a sustainable alternative to conventional felt-tip and graffiti markers. It is made from recyclable and biodegradable materials such as algae and PLA. The ink is also derived from algae. In the quantities used, it is harmless to the environment because the ethanol …
material
technology
sustainability
design
Projects of Prof. Mareike Gast at Burg Giebichenstein University of Art and Design