Lanmar #Black4F PTFE Laminated Fiberglass Fabric (0.004″) is a pigmented black PTFE coated fiberglass fabric engineered for high-performance heat sealing, industrial release, and processing applications where a robust non-stick surface and enhanced wear resistance are critical. This laminate features PTFE (polytetrafluoroethylene) bonded to woven fiberglass cloth, delivering a durable surface finish suited for continuous operation in demanding production environments. 

At 0.004″ (4 mil) thickness, Lanmar Black4F provides consistent heat resistance, non-stick release, and mechanical durability for industrial equipment and packaging systems. Its black pigmented PTFE surface offers the same reliable performance as standard PTFE coated fabrics while also accommodating applications where darker material coloration is preferred or beneficial. 

Designed for continuous use in high-temperature environments, this PTFE laminated fiberglass fabric performs well where portions of equipment are exposed to heat and abrasion — helping prevent product adhesion, reduce buildup, and improve production efficiency. Its engineered construction also provides excellent dimensional stability and long service life under thermal cycling and repetitive use. 

Key Features of Lanmar #Black4F PTFE Laminated Fiberglass Fabric

• 0.004″ (4 mil) thickness for lightweight flexibility and durability 

• Black PTFE coating for non-stick release and improved wear performance 

• High temperature capability suited for heat sealing and processing environments 

• Fiberglass reinforcement for mechanical and thermal stability 

• Low-friction surface to reduce product buildup and ease cleaning 

• 38″ standard width accommodates a variety of equipment configurations 

Common Applications

Lanmar #Black4F PTFE laminated fiberglass fabric is widely used for:

• Heat sealing and packaging equipment where high-temp release is critical 

• Industrial release surfaces to prevent sticking or contamination 

• Processing machinery liners and guides requiring durable, heat-resistant materials 

• Conveyor contact surfaces in food and manufacturing environments 

Lanmar supplies PTFE coated and laminated fiberglass fabrics in a range of thicknesses and configurations to suit specific application requirements. For assistance with selection or custom fabrication, contact Lanmar customer service with your process details.