Go with the alphatic. CA can be used if you have access to the parts being glued while the parts are held together. But, in your case, with the sheer web in place, you wouldn't be able to access the contact points. If you want to make a quick connection, with a minimum of pinning or weighting while the glue dries, there's still a way to use alphatic almost like a contact cement. Apply alphatic to the ribs and also on the sheeting where the ribs will contact. Let the alphatic dry to the touch. Now you place the glue-to-glue peices toghether and "re-activate" the glue using a covering iron. Hold the two glued surfaces while it cools and the glue re-sets.

Scott