Denier

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May 20, 2005
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Corona, CA
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2005 ST13
For those lost on marketing hype, I thought I'd post about "Denier" (den-yeh), since it's thrown around like it's a big deal or something.

It's just the mass in grams of a single filament, 9000 meters long. It's not how big the yarn is, or how resistant it is to abrasion (although the filament does play a part in that.) It's not related to it's chemical properties (kevlar, nylon, polyurethane, polyamide, etc.). It's not related to the final weave of the fabric.

Wiki.
Denier is a unit of measure for the linear mass density of fibers. It is defined as the mass in grams per 9,000 meters. In the International System of Units the tex is used instead (see link).

One can distinguish between Filament and Total denier. Both are defined as above but the first only relates to a single filament of fiber (also commonly known as Denier per Filament or D.P.F) whereas the second relates to a yarn, an agglomeration of filaments.

The following relationship applies to straight, uniform filaments:

D.P.F. = Total Denier / Quantity of Uniform Filaments

The denier system of measurement is used on two and single filament fibers. Some common calculations are as follows:
1 denier = 1 gram per 9 000 meters
= 0.05 grams per 450 meters (1/20 of above)

* A fiber is generally considered a microfiber if it is 1 denier or less.
* A 1-denier polyester fiber has a diameter of about 10 micrometers.
* Denier is used as the measure of density of weave in tights and pantyhose, which defines their opaqueness.
 
Wow. That brings back memories. I used to work in a physical testing lab for the duPont Dacron Fibers Division. We were extruding Dacron Staple and Dacron Yarn at the Cooper River Plant in Charleston, SC.

Dale :)
 
Thanks for enlightening me. I had the basic idea, but it's nice to have details.

Makes me wonder what is the denier value for Shredded Wheat? That's got tons of fiber.
 
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