I don't know what the name of it is but I did the same technique with a strip quilt made out of 2 1/2" strips. The only difference was that I used batting and a cotton backing. I cut my batting and backing a little bigger than I wanted the quilt to finish at and then I just sewed strips on top of the batting. I did draw a line across the batting at the top where I wanted to start the strips and then I drew a line down the middle of the batting. I pressed my strips in half and lined them up with the line down the middle of the batting so everything would be centered correctly. I would sew each strip on and then flip it down, press it in place and then pin on my next strip. It turned out well; centered and not wonky at all and completely quilted! Just put a binding and label on it and called it a day! I would call it a quilt as you go method but not sure if that is the appropriate term. .
Here is a video tute that inspired me to try it on a throw size quilt
http://quiltingtutorials.com/all/quilt/
I gifted the quilt before I got a picture taken of it so I can't show you how it turned out
