Austrian fibre maker Lenzing is stepping up production of its heat protective rayon fibre so that TenCate can supply larger quantities of its Defender M flame retardant fabric to the US military.

TenCate Protective Fabrics, based in Union City, Georgia, said the volume increase will take effect late in the third quarter.

Launched in March 2007, Defender M has become a key component of US military combat uniforms used by the US Army and the US Marine Corps.

Lenzing's investment in new production capacity will also enable the two companies to pursue international military orders.