Bulked yarns

AMPS-containing, 23 722 block, 7 645-650 characterization, 7 655-659 classification in terms of monomer sequence distribution, 7 608t compatibilization efficiency of, 20 335-336 graft, 7 650-654 in high bulk yarns, 11 213 hyperbranched, 7 654-655 IUPAC source-based classification, 7 698t... 

Fig. 7,19 Bulked yarn made by setting with high twist...

With the exception of Taslan, all the bulked yarns which have been described are not dimensionally stable. The materials made from them lose a greater or less proportion of their area on relaxation in hot water, when equilibrium is established between the release of the elongation caused by winding, knitting or weaving tensions and the natural rigidity of the fabric. 

Side-side bicomponent fibers can be used to produee self-bulking yarns. Two PET polymers of different molecular weights, spun as a side-side heterofil, produce a self-bulking fiber... 

Heavier-denier BCF yarns are generally spun for tufted or woven carpeting. Typical processes for producing BCF yarns consist of means for drawing the yam coupled with a stream or hot-air jet-texturing device for imparting bulk. The bulked yarn is removed from the jet-crimping device and wound onto a disposable tube. There are many variations of the BCF process. 

Outdoor fabrics tents, awnings, etc. High-bulk yarns Wool replacement... 

Bulk yarn n. Yarn of glass (or other) fiber in bulk form, as opposed to roving, mat, or woven forms. 

Compacted yarns n. Air-jet interlaced yarns. Since the entanglement serves only as a substitute for twist, the degree of interlace or tangle is not as great as in air-jet bulked yarns. 

Jet A device used to bulk yarns by introducing curls, coils, and loops that are formed by the action of a high velocity stream, usually of air or steam. Vigo TL (1994) Textile processing, dyeing, finishing and performance. Elsevier Science, New York. 

Textured Yarns n Yarns that develop stretch and bulk on subsequent processing. When woven or knitted into fabric, the cover, hand, and other aesthetics of the finished fabric better resemble the properties of a fabric constructed from spun yarn. Also see Texturing. The ten types of textured yarns are Bulked Yarn -Qualitative term to describe a textured yarn. A bulked yarn develops more bulk than stretch in the finished fabric. Coil Tarn - A textured yarn that takes on a coil or spiral configuration when further processed. A coil yarn can be either a torque yarn or a nontorque yarn. A coil yarn can be formed by the false twist or edge crimp... 

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