kraftwerk is a cardboard chair, designed by Tom de Vrieze. The chair is very light (1,8 kg or 3.97 lb) and strong.
kraftwerk is constructed from only 4 mm or 0.16 in. thick cardboard. The chair is filled with CFC-free polyurethane low expansions foam bottles. (CFC = chlorofluorocarbons, harmful chemicals that eat away at the ozone. )Foam filling is not actually new in the furniture industry, some well known designs are riccardo blumer’s lalegerra for alias and françois azambourg’s mr. bugatti for cappellini. Foam filling is probably most know in the automotive industry for dashboards, seats, but also in other industries such as plumbing (water heating), construction and building.