Textile Yarn Testing

Products are normally examined for quality, performance and dependability before they reach the market or are put to regular use. Testing of textiles plays a central role at every stage, from manufacture and trade through to the end user. The field divides into several categories. Fiber testing covers identifying fibers, grading them, measuring length, strength and elongation, and assessing fineness and maturity. Fabric testing looks at strength and elongation, width, thickness, the density of ends and picks, yarn count, weight per unit length, cloth design and construction, air permeability, thermal behavior, stiffness, handle, drape, crease recovery, abrasion, pilling and shrinkage.

This book concentrates on the middle category, yarn testing. It examines the measures used to evaluate yarn, including yarn count, twist per unit length, tensile strength, appearance, evenness and regularity, and hairiness.