Unpack Posters Faster by Rolling Them on the Transport Tube
New posters may take a while to flatten when pressed against by books or something heavy. Use the shipping tube they came in to unroll them faster.
You will need the shipping tube your poster came in and a couple of rubber bands. Wipe the outside of the tube with a clean towel to remove anything that might damage your poster. Then, wrap the poster around the tube with the poster design facing outward. This should be the opposite direction to the direction in which your poster was folded. Attach the poster to the tube with rubber bands, but be careful as they can damage the poster. After ten or fifteen minutes, check to see if your poster is unwrapped enough to frame or hang. If your poster did not come in a shipping container, you can use something else that is circular, such as a foam roller, rolled yoga mat, or a roll of paper towels.
Expand and Flatten the Poster: A Step-by-Step Guide | Various designs