I had a twin size play quilt basted with Elmer's School glue that was in the closet for over 2 years in a bag. I forgot about it. I found it when looking for a backing fabric I though I had in the closet. I did have it, on the back of that quilt. LOL. I put the whole thing in the washer on delicate and let it soak for a few minutes then turned the cycle on. The backing, batting, and top came separated just fine. I dried the batting separately. I used the backing for my new project and another one on the play quilt.