I have done some strip piecing using that method. The paper is just to keep the piece straight. Actually, I have found with strip piecing that it isn't too hard to remove the paper after it is done. I shorten the length of my stitches but not enough to cause the paper to fall apart. I usually use a length of about 1.8 on my Bernina. I find I can start at one end and remove the paper. Then I can pull the loose side of the paper up and fold it along the next stitch line. This makes it really easy to remove and I just work down the adding tape. I usually do these while watching TV or listening to an audiobook. It actually is a bit relaxing for me. Oh, I forgot to mention, when I get done putting all the strips on the paper, I trim the sides even with the edges of the paper with a ruler and rotary cutter before removing the paper.