TextileGlossary.com

What is "Bulking" - Definition & Explanation

A technique of altering yarns to make them fluff, curl, or crimp up to give them a bulked appearance. High bulk yarns are sometimes made by combining high shrinkage staple components with low shrinkage fibers. Differs from textured yarns since bulked yarns are made from staple fibers while textures yarns are made from continuous filaments. Bulked yarns give soft, pleasant, fluffy, opaque looks and hands to many woven and knit fabrics.
Processing yarns, to fluff them up and give more coverage with the same weight. This is usually accomplished by crimping the fiber.

Some other terms

Some more terms:

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The application of a size mixture to warp yarn. The purpose of this is to make the yarn smoother and stronger to withstand the strain of weaving, to provide an acceptable hand in the woven gray...
Properties given to textile materials using additives to eliminate or prevent the growth of bacteria and fungi. Usually, the additives remain after initial washing but may be washed out over a period...
Spandex or elastane is a synthetic fiber known for its exceptional elasticity (stretchability). It is stronger and more durable than rubber, its major plant competitor. It was invented in 1959 by...
A fiber dyeing method in which dye in applied to combed fibers in an untwisted or loosely twisted rope form (called top or sliver ). Sometimes dye is applied or printed on the fiber at regular...

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