how do i repair the backing on acrylic blockout curtains?

I have a set of acrylic backed blockout curtains and some areas have stuck together and the blockout has come away in small areas. This lets the light come though and makes the curtains look a little shabby. Is there a product I can paint on the back to repair them
linda, April 2007


done
I have the same question and asked at Lincraft. The assistant said there is a product but has no idea where to get it. She said there is a spray type and it is also available as "strips" presumably to stick on. I am going to try liquid paper - the brush on kind.

Louise Wilbraham, November 2007