Larry,

I don't know if this will help or not but here is a link.
http://www.muzzleblasts.com/vol3no5/articles/mbo35-1.html
This lady got her's from someone in PA.

Q. You said you use Teflon-coated patching where do you get it?
A. I get it from Mel and Paul Hartrampt in Pennsylvania. One of the things I like about their pillow ticking is that they wash it before applying the Teflon. It makes the patching very flexible.

Maybe someone here knows who she is referring too.

Good Luck!
Blown Smoke