The Basics of Yarn Manufacturing: Preparation

Welcome to Yarn Preparation where you will learn about “Drawing”, “Combing”, and “Roving.”

Drawing

The drawing process further aligns the fibers, making them more parallel. Several slivers are blended together, in a process called “doubling,” and the slivers are then blended into a more uniform mass, in a process called “drafting.” Usually, two drawing processes are used to produce a very uniform mass composed of straight fibers.

Combing

In the combing process, a fine-toothed comb is pulled through the fiber mass to remove short fibers, entangled fibers, and small particles of trash. The result is a uniform, clean, and more lustrous sliver.

Roving

The roving process is used to prepare fiber for ring spinning. Finisher-drawn carded or combed slivers are fed into a simple roller drafting system that reduces the sliver’s linear mass, drawing it out to a size that is optimum for spinning yarn of the desired size.

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