PTFE High-Temperature Cloth – Single-Dip vs. Multi-Dip Impregnation Process
PTFE high-temperature cloth is produced via either single-dip impregnation (one pass: fast, low-cost, thin coating, rough surface with pinholes) or multi-dip impregnation (2-3+ passes: smooth, dense, pinhole-free coating, PTFE content 50-70%, premium performance, higher cost). Single-dip suits low-grade gaskets, temporary mats, and breathable materials. Multi-dip is required for food-grade baking sheets, non-stick conveyor belts, high-frequency circuit substrates, chemical liners, and architectural membranes.
