Fiberglass fabric thermal shrinkage hi PTFE tape dimensional instability thlentu ber a ni. PTFE sintering temperature (360-400°C) ah chuan residual weaving stress a chhuak thin. Insum theih loh chuan puan chu a tlahniam a; tihkhawtlai a nih chuan latent stress chu a lock in a, chu chuan adhesive curing (150-200°C) leh end-use heating-ah a hnuah a shrinkage a thlen thin. Solution: pre-heat-set fiberglass hmang la, 400°C-ah <0.5% shrinkage nei la, coating hmain residual stress tihbo rawh.