Textured yarns

Airjet spinning, cotton yarn, <5 17 Airjet textured yarn process, 20 19 Airjet texturing, 19 753 Air-knife chemical finishing, 17 513 Air knife coating, 7 10-11 method summarized, 7 5t Air-laid processes, 11 179-180 Air legislation (EU), 23 121 Airless atomization, in spray coating, 7 69-70... 

Textured semiconductor surfaces, 14 847 Textured yarn, 11 178 Texture mapping technique, 10 339-341 of lyocell fibers, 11 271 Texturing... 

Partially Oriented and Textured Yarns for Textile Applications... 

Table XXII. Color Difference Values for Series VI Dyeings on Textured Yarn...

Fundamentally, the manufacture of textured yarns is closely related to the heat setting of fabrics, which must be composed of thermoplastic fibers such as nylon or polyester, the difference being that the individual filaments or bundle of filaments in textured yams are distorted from an essentially straight rodlike form and then heat-set. In some instances, the fibers are distorted in a more or less random way at other times, a regular pattern is introduced. 

Fig. 12.18. Schematic comparison of the shapes of some textured yarns.

Winding oils for texturized yarns, non-ionic, antistatic, good washability. 

Draw-Textured Yarn Technology" Wilkinson, G. D., Ed. Monsanto Textiles Co., 1974. 

Crimp development medium, For testing of textured yarn, an environment that allows the temporary set of fiber crimp to be overcome and that allows the filaments to assume their permanently set configuration. 

Crimp retraction crimp contraction. The contraction in length of a previously textured yarn from the fully extended state (i.e, where the filaments are subsequently straightened), owing to the formation of crimp in individual filaments under specified conditions of crimp development, It is expressed as a percentage of the extended length. 

Crimp stability. The ability of a textured yarn to resist the reduction of its crimp by mechanical and /or thermal stress. 

ASTM D 4031 95 Test method for bulk properties of textured yarns. 

Texturing procedures comprise mechanical distortions of the filaments to improve fiber characteristics such as the apparent volume (bulk), stretching properties (elasticity), shape (appearance), and the perceived feel (touch, handle) of the fiber material. The textured yarns are either fine tex (1.7-2.2 tex) or heavy tex (110 00 tex) materials. The former are used in apparel applications, mainly for woven and knitted stretch fabrics the latter are used primarily for carpets. A considerable number of processes and techniques have been developed for the production of textured filaments. A compilation of relevant processes has been presented by Wagner [223]. 

The design of a commingling jet affects the appearance of an entangled yarn. Some commingling jets produce the node and antinode feature, while some produce a continuous interlaced cohesive yarn bundle without the distinct nodes. In addition, by controlling the feed speed and take-up speed (called overfeed) with a specially designed jet, one can obtain a bulky, air-textured yarn for end uses like luggage fabric, backpack, etc. 

The conventional two-stage spin and draw process, as shown in Figure 2.18, yields a fully drawn yam with a predominantly a structure. This process converts an undrawn yarn to a draw-textured yarn with a predominant a structure, improved dimensional stability, and dye-fading resistance. 

Polypropylene fabric for furnishing has been produced primarily by machine weaving. The current trend is to produce furniture upholstery with polypropylene tufted fabric of medium-denier BCF, air-textured yarn, and draw-textured yarn. More than one fourth of polypropylene upholstery is produced by needle punch. Polypropylene upholstery is widely used for sofa covering. Although the air-textured yarn is most economical, it is also used in combination with the BCF yarn. About 40% of polypropylene fabric is used in furnishing, of which 14% is used in cars. Among the automotive fabrics consumed in West Europe in 2000, 41.7%) was polyester, 26.1% nylon, 13.9%i polypropylene, and 11.8% viscose. It is estimated that the consumption will increase from 259 KT in 2002 to 302.9 KT in 2006. 

Textile glass—Continuous filament yarns, staple fibre yarns, textured yarns and rovings (packages)—Determination of linear density Textile glass—Yarns—Designation... 

Convolution kan-v9- lu-shon (1545) . (1) An irregular spiral or twisted condition characteristic of mature cotton fiber. It is visible under a microscopic. The finer fibers are generally more twisted than the coarser fibers. (2) Coil and curl in certain types of textured yarns which provide bulkiness to the yarn. Tortora PG (ed) (1997) Fairchild s dictionary of textiles. Fairchild Books, New York. 

Muff n. A loose skein of textured yarn prepared for dyeing or bulking. In the bulking operation, the yarn contracts and the resulting skein resembles a muff. 

Producer-textured yarns n. Continuous filament yarns that have been bulked during manufacturing by the fiber producer. 

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