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Denier is a term used to describe a unit of weight per unit of length of any linear material. A denier is expressing the coarseness or size, however, most of all the fineness of a relatively continuous fibre or yarn. A low number of denier indicate a finer size and higher numbers the coarser size. 0,05 grams per 450 metres of length are officially the number. This is weight in grams of 9000-meter fibre that is in the form of a continuous filament. Denier is still a widely used measurement term. However, in most countries outside of the US, the denier system is replaced by the tex system, linear density of fibre and yarns.


  • Encyclopedic Dictionary of Polymers, Jan W. Gooch. Published 2007 by Springer Science+Business Media, LLC, and Encyclopedia of Textile Finishing, Prof. Dr. Hans-Karl Rouette Published 2000 by Springer

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