What is PTFE coated fiberglass fabric?

PTFE coated fiberglass fabric is a high-performance industrial textile made by coating a woven fiberglass base cloth with PTFE (polytetrafluoroethylene), a synthetic fluoropolymer known for its non-stick, chemical-resistant, and high-temperature properties.

This combination creates a fabric that is strong, durable, heat-resistant, and non-stick, making it ideal for demanding industrial, food processing, and architectural applications.

1. Material Composition

Fiberglass Base Cloth

Woven from glass fibers.

Provides high tensile strength, dimensional stability, and resistance to stretching.

PTFE Coating

Non-stick, low-friction surface.

Excellent chemical resistance and thermal stability.

2. Key Properties

High Temperature Resistance – Can typically withstand continuous use from -70°C to +260°C (sometimes higher for special grades).

Non-Stick Surface – Prevents materials from sticking, ideal for release sheets and conveyor belts.

Chemical Resistance – Resists acids, alkalis, solvents, and most industrial chemicals.

Dimensional Stability – Maintains shape under heat and mechanical stress.

Low Friction Coefficient – Allows smooth material transfer in processing lines.

Electrical Insulation – Good dielectric properties for electrical applications.

3. Manufacturing Process

Fiberglass Weaving – Glass fibers are woven into a base fabric.

PTFE Coating – Fabric is coated or impregnated with PTFE using a dipping or coating process.

Curing – Heat treatment ensures strong adhesion of PTFE to the fiberglass fibers.

Finishing – Fabric is cut, slit, or treated for its intended application.

4. Common Applications

Food Processing – Conveyor belts, baking sheets, and grill mats.

Packaging Industry – Heat-sealing machines, release liners.

Solar and Electronics – Insulating sheets, circuit board manufacturing.

Textile Industry – Dryer belts and release fabrics.

Architectural Membranes – PTFE-coated fiberglass fabric roofs for stadiums and large-span structures.

5. Advantages Over Other Materials

Stronger and more dimensionally stable than pure PTFE film.

More heat-resistant and non-stick than uncoated fiberglass.

Longer service life in high-wear applications.

PTFE coated fiberglass fabric combines the strength of fiberglass with the versatility of PTFE, creating a material that is heat-resistant, chemically inert, non-stick, and highly durable. Its performance in extreme conditions makes it indispensable in industries from food processing to electronics and architecture.