PTFE Filter Fabric is an extremely flexible and resilient fabric

PTFE Fiberglass Filter Fabric

At Zhejiang Kaiao New Material Co., Ltd, we offer an impressive variety of fabrics that enable us to deliver only top-grade tensioned membrane structures. With such a selection, you are sure to find just the fabric for your project - from PVC Membranes and Polyester Mesh Membrane Fabrics up to PTFE Filter Fabric, PVC Membranes and Polyester Mesh for Polyester Mesh mesh materials that come with colors patterns sizes, and thickness options to meet any need for tensioning applications.

PTFE Filter Fabric is an extremely flexible and resilient fabric composed of an expanded microporous polytetrafluoroethylene (ePTFE) layer on top of high-grade fiberglass base cloth, featuring high tensile strength, low elongation, smooth surfaces that offer excellent chemical stability, temperature resistance, and corrosion protection, along with great air permeability for improved airflow - providing good air permeability to reduce static buildup. It comes equipped with carbon loading to help minimize static buildup.

Glass fiber fabric layers with ePTFE film layers are coated in a highly viscous solution containing additives to control foaming and ensure proper coating and adhesion to fiberglass. These additives may also help select fabric properties such as elongation, abrasion resistance, and handling different temperatures.

Once the foam coating has been applied to a glass fiber mat, it is heated to melt the ePTFE and create a bond between it and the fiberglass fibers. Depending on its chemistry and ratio of PTFE-to-glass content, different grades of composite can be produced, each having unique performance characteristics.

Economy-grade PTFE fiberglass fabrics typically possess lower abrasion and heat resistance than premium-grade fibers; nevertheless, they remain suitable for most industrial uses, including release sheets on heat-sealing machines and laminate presses, fusing belts for producing uncured rubber products, conveyor belts used in the packaging industry and as insulation on hot platens chutes and hoppers. Economy PTFE fabrics may also come equipped with non-stick surfaces suitable for food processing or serving as an insulation material on hot platens chutes and hoppers - making economy-grade fabric materials ideal for these purposes.

Cleanrooms often employ abrasion-resistant PTFE fiberglass fabrics as air filters, typically attached to rockers' arms for vigorous shaking to dislodge particulates from their bags. Fiberglass bags may withstand such treatment; however, repeated flexing eventually causes weakening. By contrast, bags constructed of woven PTFE-glass fabrics can withstand repeated shaking without becoming compromised over time.

PTFE is widely recognized for its superior outgassing properties, meaning it does not emit volatile chemicals into filtered air thus significantly reducing contamination risk in cleanrooms. Furthermore, its natural resistance to acids, alkalis, and organic solvents makes PTFE an excellent material choice for use in such applications.