Yarn regularity describes the uniformity of the yarn throughout its length in terms of its appearance and structure. Regular yarns have a similar appearance and structure throughout. There may be some slight variation due to uniformity of fiber distribution and fiber length, degree of parallelism of fibers within the yarn, and regularity of fiber size or diameter.
Yarn quality is related to the degree of uniformity within the yarn. Fancy or novelty yarns have deliberately introduced appearance and structural variations. These irregularities appear at intervals due to the manner in which the yarn is processed. Composite yarns include components that differ from each other.
Describe about Simple Yarns
Simple Yarns a simple yarn is alike in all its parts. It can be described as a spun or filament yarn, based on its fiber length. A simple yarn also can be described by the direction and amount of yarn twist and by yarn size. Outlines are the relationship of yarns in this category to each other.
The number of strands used to produce the yarn is another means of classifying yarns. Simple yarns are classified as single, ply, or cord yarns. A single yarn has one strand and is the simplest type.Simple single yarns require no additional processing once the individual yarns have been formed.
Spun, filament, and textured-bulk yarns are types of simple single yarns that are most commonly found in apparel and furnishing fabrics. These simple single yarns are alike in all parts, consisting of one strand of fibers.
Ply yarns are sometimes used in the warp direction of woven fabrics to increase strength. Two-ply yarns are found in the best-quality men’s broadcloth shirts. Ply yarns are frequently seen in knits and furnishings. They are found in sewing thread and the string used to tie packages. When simple ply yarns are used only in the filling direction, they produce some fabric effect other than strength.