Octa Fibre From Teijin Offers Unique Properties

Teijin Fibers Limited, the core company of the Teijin Group's polyester fibers business, has developed an unprecedented polyester fiber with a unique, highly modified cross-section with eight projections aligned in a radial pattern around a hollow fiber.

The new fiber, named Octa after its octopus-like appearance, offers rapid sweat absorption and drying, low weight, heat shielding/insulation and useful bulkiness. Octa will be marketed from April 2012 for innerwear, fashion apparel and many other uses.

The voids between the eight projections result in a highly functional fiber for sweat absorption, rapid drying and bulkiness. The voids also improve heat shielding and insulation properties, as well as create the lightweight feel of hollow yarn at roughly half the weight of yarn of similar thickness. Octa can also be used in combination with other fibers through false twisting, combined filament processing and two-strand yarn spinning.

Modified cross-section fibers enable new functions to be added and the appearance and texture of original fibers to be altered. Teijin Fibers' lineup includes a polyester fiber with a triangular cross-section offering a glossy appearance, a hollow, thin-walled polyester fiber that traps large quantities of non-flowing air for thermal insulation, a polyester fiber with a cross-section of four flat peaks for superior sweat absorption and quick drying, and a false-twisted polyester fiber with an irregular cross-section.

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