Solar protection/ Textile Architecture/ Tensile structures
Coated fabrics are generally composed of a base fabric, made of threads woven in a warp and woof, which are stabilized and protected by a coating on both sides. Mehler Texnologies, a company specializing in coated fabrics, presents the Valmex® FR collection, suitable for fabric membrane roofs. These fabrics have a polyester base (PES) and are finished on both sides with a PVC coating for low capillarity (water absorption), as well as a flexible lacquer. They also receive an anti-fungal treatment and protection against UV radiation. The following models are available:
—Mehatop F: Finished with PVDF lacquer. Its most notable property is that it can be welded without any previous treatments that might alter its finish.
—Mehatop A: With an acrylic lacquer finish.
—Mehatop M: With a metallic finish. Valmex FR withstands a range of temperatures from -40 to +70º C, and has a B1 fire rating.
Depending on the type selected, fabric weight ranges from 700 to 1550 g/m². Warp|woof tensile strength ranges between 3000|3000 and 10,000|9000 N/50 mm, and tear resistance from 300|300 to 2000|2000 N. Maximum thickness is 1.2 mm, and maximum translucence, 15%. The standard width is 250 cm and standard colour is white, while a wide range of colours can be specially ordered.
Fabric roof of the Poznan Municipal Stadium (Polond), made with Valmex FR 1400 membrane. Bien Studio, Arch.
A- Base fabric of PES.
B- Adherence layer.
C- PVC coating.
E- PVDF lacquer.
Roof of the Hendy Ford Building in Eastleigh (Great Britain) made with a Valmex FR 1400 Mehatop F membrane in a silver colour. Simpson Hilder Associates, Archs.
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Products may vary depending on the area of distribution.