The added advantage of Air-Jet texturising process is the facility of blending of different type of filament yarn together. Judicious blending, decided by the optimum blend proportion to get from constituents of filaments, meet the parameter of desired quality.
It has been long assumed that a fibre that absorbs moisture tend to be more comfortable than a fibre that does not absorb moisture, thus in many articles the moisture absorbencies of fibre yarn and textiles related to their comfort have been stressed. Wicking is the spontaneous flow of a liquid in a porous substrate driven by capillary force. This flow in aporous medium cause by capillary action is governed by the properties of liquid such as surface - wetting forces and geometric configuration of the pore structure such as yarn construction, no. Of fibres in cross section, the randomness of internal structure, twist, fabric structure and loop formation specially in Air-Jet textured yarn.
Wickability of Air-Jet textured yarn and their fabric can be measured by both horizontal and vertical wicking testing method. Due to tenor body activity the body can put out as much as 1 L sweat an hour there for the fabric worn next to skin will get wet, this moisture fabric reduce the body heat & makes the wearer uncomfortable, so the fabric worn next to the skin should assist for the release of moisture quickly to the atmosphere. The fabric next to skin should have two important properties, the initial and the foremost property is to absorb the perspiration from the skin surface & the second property is to transfer the moisture to the atmosphere & make the wearer feel comfortable. Diffusion & wicking are two important properties through which moisture is transferred to the atmosphere.
This article reviews the applicable concept of wicking mechanism, kinetics of wicking, wicking testing methods and moisture transportation etc. for Single Component and blended production of air-jet textured yarns & their fabrics.
Originally Published in Textile Review, Jan-2011.
The author is associated with DKTE's Textile and Engineering Institute, Ichalkaranji, Maharashtra.
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