Projection screen tape wrinkles

[MarshallPope]

I couldn't decide if this should go in scenic or projection, so feel free to move if necessary.

Last night, we began loading in our next show, which is very projection-heavy. All of the projection screens are Rosco Twin White stretched onto wooden frames, affixed via staple gun. Two of the screens are 2-3 pieces of twin white seamed together via Pro Gaff RP tape. We assembled the screens off-site a few days ago and rolled them onto carpet tubes. Upon unrolling them, we found that the tape lines were severely puckered all along the width. By stretching a bit extra on the tape lines, I was able to reduce the puckering at the ends of the tape, but not in the center of the screen. The largest screen is, if I recall correctly, around 20' wide by 11' tall, with 3 pieces of twin white, running horizontally. THis is the one causing the most trouble.

Any suggestions on how to reduce the puckering? I had thought about trying a heat gun, but that is just instinct, I have no idea if it would actually do anything, or if it might just make matters worse.

Thanks, as always!

 

[tdeater]

My gut feeling is that it will make things worse, but I don't know that for sure. I am thinking when they where taped together, the Gaff stretched as they where taped. As it sat there, it sprung back a bit causing the wrinkles. I would think the best solution would be to re-tape them, and try to minimize the tension on the tape as you tape them. Even a small amount of shrinkage, multiplied over 20 feet could be a big problem.

Again, just my initial thoughts from my own little world.

 

[Footer]

Let it hang for a few days under tension, it should relax a bit.

Sent from my Galaxy Nexus using Tapatalk 2

 

[MarshallPope]

Thanks for the input.

We ended up giving it a couple of days and then just stretching the hell out of the tape lines. It's not perfect, but it's much better than it was.