PET filament yarns as pile yarn in carpets

摘要

Korteks has developed a new process of air-jet texturing of spun-dyed (dope-dyed) polyester filament yarns for use as pile yarns together with polypropylene yarns in the application of woven piece rugs. These yarns are produced by air jet texturing process of PET based spun dyed polyester POY. During extrusion of the polymer before spinning, color pigments can be dosed in masterbatch form in various colors to get spun-dyedrn(dope-dyed) POY yarn similar to polypropylene fibers. The pigments used have high color fastness properties to match PP yarns. The wash fastness of polyester yarn is also higher due to pigments and dope dyeing compared to conventional package dyeing. The resilience of the final air-jet textured PET yarn is also higher than standard polyester yarn making it suitable for use as pile yarn and also contributing to longer lasting of rugs. The main purpose of the development and achievement is to obtain embossed designs and figures on rugs. Whilst it is beingrnair textured, the shrinkage of PET yarn has been kept as high as possible. When the rug is subject to fixation process, since the PP yarns in pile have zero shrinkage, the pile PET yarns would become shorter thus forming embossed designs on the rug. The development also provides cost savings in rug manufacturing.