Blackout fabric is what you want.

100% opaque.
It drapes like fabric, not like a recycled garbage bag.
No static cling or sparks like plastic.
Easy to sweep to one side for entry/exit.


Visit your local JoAnn or Fabric Depot,
Ask for room darkening fabric, or...
http://www.fabric.com/ProductDetail....b-b15f5956f690

Reinhold