Separation Process for Elastane from Textiles

Separate elastane from textile fiber blends and mixtures by a simple and easy 1-step process. Expand your recycling portfolio to any elastane blend.

Saal Bira
Donnerstag, 14.09.2023, 14:45 - 15:10 Uhr
Wolfgang Ipsmiller, TU Vienna1, Acticell GbmH2, Vienna (AUT)

Even though elastane accounts for only about 1% of global fiber production, this fiber is contained in about 30% of all apparel textiles. However, current recycling technologies mostly require textile input that is free of elastane. Our patent pending technology allows to remove elastane from textile blends by a simple and easy procedure. The remaining other fibers are unaffected and can be directly fed into a fiber spinning process. The process has been proven to be successful in deriving pure PET from PET/EL and pure PA from PA/EL mixtures. There is of course no principal limitation to apply the invention to other textile blends, even to the separation of EL from blends with cellulosic fibers. In contrast to the state of the art, we use a formulation that is not REACH listed, can be recovered within the process and also offers the advantage that the dissolved EL remains chemically unchanged. Hence, it allows to use the dissolved EL in fiber spinning.