Basic Principle of Fancy Yarn

Basic Principle of Fancy Yarn:

The basic structure of a fancy doubled yarn consists of ‘core’ threads, an ‘effect material’, and a ‘binder’ which, as the name suggests, ensures that the entire structure holds together. A ground (core) component, an effect component and a binder in a fancy yarn are shown in the following figure. To obtain structural effect, longer length of effect component, relative to ground component must be present to form the required effect. Twisting of the effect component on to the ground component will produce aesthetic effect.

The basic principle is therefore to feed the ground and effect component at different speeds in to the twisting element. The percentage ratio of the effect component to the ground component is called over feed ratio.

In developing an understanding of yarn structures and types, there is no substitute for handling yarns and analyzing their structure and form. It is a valuable exercise to create a private collection of interesting yarns, and their use in fabrics.

The more easily discovered features might include, for example:

• Count

• Fibre or fibres used

• Basic structure (is the yarn a slub, bouclé, chenille, chainette, or a yarn involving several fancy effect yarns . . .?)

• Number of component threads

• Purpose of each component thread (is it a core, effect, binder . . .?)

• Intended use for the yarn itself (knit, weave, embellishment . . .?)

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