What are the different varieties of yarn?
Different types of yarn are used for different activities or processes in making the final fabric. The properties of the finished yarn are based upon the desired method of application. Yarns used for weaving have a tight twist, smooth surface, and lengthwise strength. They are engineered to be durable, strong, and not so stretchable. Yarns used for weaving are sold in a cone.
On the other hand textile yarns designed for knitting have a looser twist, more elasticity, and a softer feel. Knitting yarn is commonly sold in a ball or skein. The structure of the fiber used gives the different types of yarn unique and beneficial properties.
High-performance yarns used in woven and knitted fabrics are increasingly chosen for their design and distinctiveness. Yarn manufacturers embark on a quest for product range and quality. The yarn has significant relevance to the final fabric.
Let us discuss the important parameters to choose the best yarn.
How to choose the right yarn ?
Few measures that are considered for yarn quality requirements are :
Yarn count refers to the thickness of yarn and is determined by its mass per unit length. Yarn variation refers to the variation in yarn count along its length. It is the evenness of staple spun yarn a major concern. Continuous filament yarns have no variation in linear density. A yarn with poor evenness will have thick and thin places along yarn length and the possibility of twist occurrence in the thin places of yarn is high. This contributes to variations in strength, yarn diameter, or thickness, which often adversely affect the appearance of the resultant fabrics.
The tensile property of textile yarns is a crucial parameter in determining the suitability for any particular application. It is therefore of utmost importance to determine the breaking strength characteristic accurately.
The process of winding provides an opportunity to monitor for knots, thin places and weak spots. An agreed limit of knots per cone is usually set and cones exceeding this prescribed limit is usually ejected.
Yarn lubricationThe type and level of yarn lubrication determine the coefficient of friction of the yarn and have a direct influence on the number of yarn breakages.
Fibers that are seen out of the main body of the yarn are called hairiness. Yarn hairiness is linearly related to the count of the yarn, i.e. there are more hairs in a fine yarn compared to a coarse yarn of the same type.
The properties of cotton yarn are influenced by important factors such as
Yarn construction parameters and
Spinning methods and production technology.
It can be stated that fiber properties present the main influencing factors. Precot manufactures yarns and threads made from organic, BCI and normal cotton as well as polyester cotton blend. Also, we know the importance of understanding the fiber properties in detail to carry out the yarn engineering and production processes properly and effectively.
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