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A more sustainable colorant technique for polyester fibers

By Mary Page Bailey |

The global textile industry generates a great deal of waste, and many efforts are taking place to make textile processing more sustainable. PolyOne Corp. (Cleveland, Ohio; www.polyone.com) has introduced a new fiber-colorant technology for polyester that incorporates proprietary high-pressure metering equipment with the company’s ColorMatrix liquid concentrates. The technology enables the color-injection step to take place further downstream than in conventional colorant processes. In the new ColorMatrix process, liquid color is injected into the polyester melt-flow between the end of the extruder and the spin head. This later-stage injection minimizes color contamination and reduces the time required for cleaning and color changeout. Furthermore, several injection points can be added to run multiple colors or additives simultaneously on a single extruder line. This flexibility is especially beneficial to small-batch production, as manufacturers can use the same process to make a wide range of volumes and the process can be rapidly scaled onsite. Also, the new technology enables facilities that use reactor spinning lines to produce standard white polyester fibers to produce colored products inline, eliminating the need for a secondary…
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