Explain deniers to me (fabric specification question)

Factual Questions
1

There is a type of fabric I would like to use for a project I have in class: Honeywell Spectra Fiber 2000 (the link goes to a PDF).

I need to know the thickness of what the fabric would be, but all the pdf gives is Deniers or Decitex. I found explanations of both on Wikipedia, but I’ve never really worked with fabric before, so it doesn’t completely make sense. Is there only a certain thickness the fabric can be? Can the fabric be made into any thickness I want?

Don’t worry about doing my homework for me- this is only a very small part of the project I have; the project is to design a parachute deployment system. There’s a lot of stuff to do for the project, and our prof wants to know a whole lot of information, so if anyone could help me with the fabric information, I would really really appreciate it.

2

If you understand the definitions and know what polymer the fiber is made of, you can find its density and calculate its diameter. Then, the thickness of the cloth is dictated by how many diameters stack on top of each other in the thickest parts of the weave - for example square weaves and twills just place two diameters in a stack. If you don’t know the density of the polymer you can guess it is 0.8 or so, which is typical of most polymers. If the fiber isn’t round, things get more complicated, but you can still approach the problem this way with some kind of allowances.