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Nonwovens / Technical Textiles

Eastman Adds To Cyphrex™ Microfiber Range

Eastman Chemical Co., Kingsport, Tenn., has added a 4.5-micron-diameter polyethylene terephthalate (PET) microfiber to its Cyphrex™ microfiber product line, enabling various formulation options to fine-tune performance of wetlaid nonwoven fabrics for applications such as filter media.

Eastman introduced Cyphrex in a 2.5-micron diameter last year. The fibers are produced using islands-in-the-sea bicomponent fiber technology. The company reports that the 2.5- and 4.5-micron fibers may be blended to allow specific permeability and pore sizes, and that media made with the blended fibers can feature better sheet uniformity than media made only with 2.5-micron fibers.

“The new 4.5-micron fiber demonstrates our capability of changing size, and manufacturers can use this unique fiber to pinpoint permeability and pore size and to improve media uniformity even further,” said Fred Dulin, director, microfibers platform, Eastman. “These results demonstrate that significant value can be created in nonwoven formulations through specific design of fiber size characteristics and insights provided by industry-standard application development capabilities.”

March/April 2014




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