Link: http://adteputek.com/b2evolution/blog2.php/2009/03/28/what-has-a-higher-release-skived-teflonr

Skived Teflon® is pure film. With Teflon® Coated Glass Fabric the Teflon® that has been applied to the glass fabric and the result is a relatively smooth surface. The Skived Teflon® has a much smoother surface,thus a lower coefficient of friction, and a higher release.