'kraftwerk' is a cardboard chair that has been created by designer tom de vrieze. the chair uses only 4 mm cardboard thickness and is filled with polyurethane expansion foam.its name arises from the use of cardboard and kraftpaper-tape.

tom de vrieze explains his design process - first i tried to work with internal structures, without using foam, but the unfolding patterns became to complex for DIY-builders. i agree, not absolutely envirnoment friendly due to the expansion foam but more durable and stronger than some other cardboard chairs. most cardboard chairs are using larger thicknesses (and/)or are layered which are using a lot of cardboard-surface.

view designboom's cardboard folding chair competition

via designboom