A novelty yarn made from staple fibers, a slub yarn can be used either as a single or a 2-ply yarn. The single slub yarn is untwisted or loosely twisted spaced irregularly along the length of the yarn, creating soft, puffy areas much like the appearance of a thick-and-thin yarn. In a 2-ply yarn, the slubs may either be present in both plies of the yarn, or may only appear in one of the two plies, with the second ply acting as a stabilizer for the two-ply yarn construction. Slub yarns are used in such fabrics as shantung, butcher rayon, and in some linen fabrics.

Slub Yarn