Synthetic fabrics like nylon taffeta, ripstop nylons and polyesters, and Oxford nylons, can be difficult to control when sewing. Double-sided acrylic adhesive tapes make the job manageable for you. Simply place the Double-Sided Seam Tape along the sewing line and then sew right through it.
To make your sewing job easier and to keep from gumming up your needle and bobbin, try sewing just inside the line of tape (you'll need another quarter-inch of fabric overlap for this). Or, you could minimize the number of times your needle passes through the adhesive by spacing one-inch strips of seam stick tape every five or six inches along your seam.