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Evoquench from Oerlikon for spun dyed polyester POY & FDY
25
Nov '15
Oerlikon Barmag now also offers solutions for the efficient production of spun dyed polyester POY and FDY microfibre yarns under practicable marginal conditions when using the Evoquench radial quenching systems.

According to a press release, in the case of spin-dyeing polyester POY or FDY using the Evoquench system, the particular focus lies on the long, stable duration of use for the sieves installed in the Evoquench.

“This ensures a highly- consistent yarn quality over long production periods and makes a considerable contribution to reducing downtimes and consumption costs,” Oerlikon Barmag said.

The dyes deployed in spin-dyeing are with the exception of black, generally azoic dyes or organo-metallic complexes.

“These aromatic-based molecule systems can, in part, decompose at the high melt temperatures and evaporate directly underneath the spinneret,” the company added.

“While this evaporation does not result in lower durability and evenness when using a cross-flow quenching system, increased contamination of the sieves of the Evoquench could well result in lowering their service life and the evenness of the yarn,” it explained.

“For this reason, the special design for spun-dyed yarn protects the sieves against contamination caused by evaporating dye particles,” Oerlikon noted.

Oerlikon further added that the unbroken trend towards spun-dyed yarns has numerous good reasons, with the most important benefits of spin-dyeing lying in the evenness of dyeing results and in the ecologically considerably cleaner process. (AR)

Fibre2Fashion News Desk – India

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