A beam-mounted, foldaway chair. The seat tips up, the back reverts to an upright position and the armrests fold up out of the way in a single, automatic motion The seat tips up about its axis while the backrest moves forward until they are flat against one another. When folded away, the depth of the seat and backrest together is a mere 150-mm. As the seat and backrest fold away, the armrests rotate into an upright position within this 150-mm space. The sequence of movements described here occurs automatically whenever the seat is vacated. Cast aluminium sides finished in powder epoxy paint support the seat, back and armrest assembly. The seat and back pivot on polyamide bushings that require no maintenance. The folding mechanism relies on gravity and involves no springs. This ensures maintenance free, extended durability. At the bottom, the sides fit onto, and are fastened onto, the tubular foot structure. The seat consists of a compact, single block of cold-moulded polyurethane foam that completely covers the internal metal structure. This structure comprises a curved tubular frame, a mesh of flat springs and hinge pins for the seat to swivel on. The polyurethane foam block is covered with easily removable and replaceable zip-on upholstery. The backrest is made in the same way as the seat, except that it has a metal sheet that fully covers the rear part of the backrest in order to protect the upholstery from damage due to friction. Between the upholstery and the foam of both the seat and the back, there is a 5-mm thick TS System fire curtain that keeps fire from reaching the foam, thus preventing the emission of toxic gases and flames. The sides supporting the seat and back are attached to a rectangular aluminium tube structure. The underside of this structure is in turn attached to a foot supported by an aluminium tube ending in a circular base that is anchored to the floor by means of metal expansion plugs. The structures are available in modules of 2, 3 or 4 seats with a 70-80 micron black epoxy paint finish. Curved rows can be formed by joining several beams, each at a slight angle from the last. The armrests consist of a metal structure covered with semi-rigid, cold-moulded polyurethane integral foam. They fold away automatically together with the seat so that they are always in an upright position when the seat is up. In conjunction with the F-45 writing table, this is an ideal solution for working sessions, talks and lectures.
• Steel plate and tube, welded with continuous arc.
• Seat density : 60-65 kg/m3
• Back density : 50-55 kg/m3
• Electrostatic powder Polyester
• Coating thickness: 70-80 micras
• Grid adherence: UNE-EN ISO 2409: 100%
• Fire Standards
Spain: UNE-EN 1021 Part 1 & 2
France: NF/P 92507
Italy: UNI 9175 Clase 1.IM
USA: CAL T.B. 133 (in approved fabric)
FINISHED PRODUCT :
• UNE-EN 12727 Level 4 (intensive use).
• BS 5852. Section 5. Ignition Sources 0, 1 and 5
• Material: UNE L-2630
• Density : 2,7 gr./cm3
• Breaking Load: 20 kg/ mm2
0,07 m3 (disassembled)