Patent ID: 7163601

Claim:
A method of making an architectural fabric for a retractable, temporary, or permanent structure comprising the steps of: (a) providing a layer of fabric having a first surface and a second surface and comprising polytetrafluoroethylene fibers; (b) providing a first layer and a second layer of porous expanded polytetrafluoroethylene membrane; (c) providing a first layer and a second layer of THV; (d) laminating said first layer of THV to said first layer of porous expanded polytetrafluoroethylene membrane to form a first THV/membrane composite; (b) laminating said first THV/membrane composite to said first surface of said fabric; (f) laminating said second layer of THV to said second layer of porous expanded polytetrafluoroethylene membrane to form a second THV/membrane composite; and (g) laminating said second THV/membrane composite to said second surface of said fabric.