Invista Sales And Service India Pvt. Ltd. Offers Polyester Staple and Tow Fibers. Invista Sales And Service India Pvt. Ltd. Supplies polymers and fibers, primarily for nylon, spandex and polyester applications. Polyester Staple and Tow Fibers is used for non-woven and industrial applications, and continuous filament tow. Polyester Staple and Tow Fibers are available in denier ranges of 3 - 15, with various cut lengths. This polyester staple fiber has the quality of superior whiteness, uniformity, processing ease, loft and recovery and bonding capability.