Cologne 2011: French brand Ligne Roset presented this folded mesh chair by French designer Francois Azambourg at imm cologne in Germany last week.

Called Grillage, the piece is made by stretching a metal sheet with tiny grooves cut into it, then folding into a seat and attaching to a bent steel frame.

A stretchy, quilted throw can be attached to the seat with magnets sewn into the fabric.

imm cologne took place 18-23 January. See all the stories about the event in our special category.

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The information that follows is from Ligne Roset:

Called Grillage, the design

The principle for creating the basic shape of Grillage is very simple: a sheet of metal with staggered grooves is folded, origami-style, and then drawn to create a mesh. Grillage tells the story of its manufacturing process...drawing, folding, creasing. It reveals everything about itself, from how it was designed to how it was produced.

Grillage – wire mesh - it’s the way to achieve both comfort and ergonomics with an all-metal piece of furniture. It may be covered with a special quilted material for added comfort and a warmer appearance. An outdoor version is available in light blue.

To manufacture Grillage, a sheet of metal, which is grooved in staggered rows, is stretched. Metal wire is then soldered to the exterior, piece by piece. The sheet thus obtained is folded at various points to create the seat: this is a manual operation which renders each armchair ‘unique’.The shape of the armchair will evolve over time.

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Jean Nouvel for Ligne Roset	Ronan & Erwan Bouroullec for Ligne Roset	Inga Sempé for Ligne Roset