The major issue, I think, would be flammability. I GOGGLED around a bit an could not find a definitive answer:
"DuPont™ Tyvek® is combustible and should be protected from a flame and other high heat sources. If the temperature of DuPont™ Tyvek® reaches 750°F (400°C), it will burn and the fire may spread and fall away from the point of ignition. For more information call 1-800-44-TYVEK. DuPont™ Tyvek® carries a Class I or NFPA Class A fire rating for flame spread and smoke developed index as measured by ASTM E-84."
I do know that Tyvek clothing is flammable, and not recommended for applications such as welding unless specially coated, and that special Tyvek is available for applications requiring lower flame spread.
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Last edited by Michael Thomas; 10-10-2010 at 07:00 AM.