Gore-Tex is a waterproof/breathable fabric, and a registered trademark of W.L. Gore & Associates. It was co-invented by Wilbert L. Gore (1912-1986), Rowena Taylor, and Gore's son, Robert W. Gore. Robert Gore was granted U.S. Patent 3,953,566 on April 27, 1976, for a porous form of polytetrafluoroethylene with a micro-structure characterized by nodes interconnected by fibrils. Robert Gore, Rowena Taylor, and Samuel Allen were granted U.S. Patent 4,194,041 on March 18, 1980 for a "waterproof laminate."
Design
Schematic diagram of a composite Gore-Tex fabric for outdoor clothing.
Gore-Tex materials are typically based on thermo-mechanically expanded polytetrafluoroethylene and other fluoropolymer products. They are used in a wide variety of applications such as high performance fabrics, medical implants, filter media, insulation for wires and cables, gaskets, and sealants. However, Gore-Tex is best known for its use in protective, yet breathable, rain wear.
The simplest sort of rain wear is a two layer sandwich. The outer layer is typically nylon or polyester and provides strength. The inner one is polyurethane (abbreviated: PU), and provides water resistance, at the cost of breathability.
Early Gore-Tex fabric replaced the inner layer of PU with a thin, porous fluoropolymer membrane (Teflon) coating that is bonded to a fabric. This membrane had about 9 billion pores per square inch (around 1.4 billion pores per square centimeter). Each pore is approximately 1/20,000 the size of a water droplet, making it impenetrable to liquid water while still allowing the smaller sized water vapour molecules to pass through.
More recent fabrics such as eVent and Epic avoid the need for this inner PU coating[5] and have been shown to have higher breathability as a result, while still being rainproof.[6]
The wikipedia article that directly cites there are more advanced fabrics based on Goretex's original patent.
http://en.wikipedia.org/wiki/Gore-Tex
Using
http://www.prolitegear.com/site/xdpy/kb/00029/index.html
for reference
What a stupid argument of course... I'm pissed I allowed myself to even get sucked into it.