A thermoplastic two-layer seam tape with high melting hot melt backed on a PTFE layer was developed for extreme laundering and dry cleaning up to temperatures of 60 degrees C the tape has a modified adhesive formula. Developed especially for PTFE membranses. It is widely used by manufacturers of professional uniforms and outdoor garment. The tape offers a superior application against tapes that are supplied with an inconvenient backing paper. The tape gives perfect results when sealing as the tape edges of the tape bond perfectly. The tape also out performs backing paper supplied tapes when taping tight curves and complicated designs