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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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