By  on September 22, 1994

NEW YORK -- DuPont said Wednesit is adding to the luxe quality of microfibers with a new version of its Micromattique polyester.

The new development is called Micromattique XF, and when measured in denier-per-filament, it is the finest microfiber created in North America, DuPont said. It measures 0.3 dpf, which means that when spun into a fiber, it becomes 70 denier, one-third the thickness of silk. It costs about 20 percent more than established Micromattique.

The fiber is available in a clear luster and can be false-twist textured to produce full-body yarns, air jet-textured for a softer, loopier yarn and warp drawn to yield drapy fabrics with a high sheen, said Jeff McGuire, Micromattique brand manager. XF, he said, stands for extra fine.

Used in wovens and warp knits, the fiber is designed to give a soft, silky touch to mid-weight fabrics, McGuire said. In circular knits, brushed satins and tricots, it is said to offer a lush hand. One aim in developing XF was to create an exceptionally fine microfiber that could be textured in commercial knitting or weaving without being split up, he said. DuPont is aiming Micromattique XF at ready-to-wear, sportswear and intimate apparel.

McGuire said there are finer fibers available -- primarily from Far Eastern suppliers -- but they are "splitables," microfibers created by splitting larger fibers with large amounts of caustic chemicals. However, McGuire said, they don't have the durability of XF.

Prior to XF, Micromattique, introduced in 1990, was available in 0.5 and 0.7 dpf yarns. That is the dpf range produced by the two other major U.S. polyester microfiber producers, Wellman and Hoechst Celanese.

McGuire said that Micromattique XF could make up 15 percent of all Micromattique production.

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