Pittsburgh, Pennsylvania-Tables made of sandwich composites may soon be used in lecture halls, dining halls and cafeterias. Dutch company Tinga Research & Development BV, of Winsum is marketing extremely lightweight, stackable 'Triple-E luxe tafels.' These are, claims the firm, easier to handle than wooden furniture, because of a sandwich construction made using Baypreg polyurethane from Bayer MaterialScience.
Back strain in moving furniture around can be eliminated because of the low weight, a BMS statement said. Tinga's sandwich design tables being used in the cafeteria of the Grote Kerk (great church) in Leeuwarden, the Netherlands, for instance, weigh only 27.5 pounds (12.5 kg) despite measuring up to 32 x 80 inches (80x200 cm).
The tables are made of lightweight rigid foam reinforced top and bottom with flax mats to absorb tensile forces, and covered with "an extremely tough, washable plastic film 0.016 inches thick," available in three imitation wood finishes and various colours. The edges are reinforced with solid wood in a matching finish. Holding all of these components together is the polyurethane system."