PTFE mesh is a permeable material composed of polytetrafluoride ethylene (PTFE) fibers. It is commonly used in glass laminating machines to provide a layer of protection for silicone vacuum bags from damage and to facilitate the evacuation of air during the vacuum process.
PTFE mesh, also know as Teflon mesh, is a high temperature sheet made out of PTFE-coated fiberglass. It not only has excellent air ventilation, but its PTFE coating also ensures optimum release properties, making it widely used for laminated glass vacuuming processes. The sheets come in various shapes and sizes that can be customised to fit your needs. Their edges can also be wrapped with cloth or tapes for extra stability.
|PTFE Mesh Sheet
|PTFE + Fiberglass
|4mm * 4mm
|30m, 33m, 50m, 100m
|580g/m2 (17.1 oz/sq yd)
|Tensile Strength (warp)
|560 N/cm (331 lbs/inches)
|Tensile Strength (weft)
|316 N/cm (181 lbs/inches)
PTFE mesh sheet is placed between the laminated glass and a silicone bag. The mesh holes with 4mm*4mm provide quick air movement during vacuuming, making it the ideal release sheet for glass lamination. What’s more, PTFE coated fiberglass provides an extra layer of protection to help a vacuum bag avoid scratches or punctures caused by sharp glass corners, and improves the overall efficiency and quality of the lamination process.
Laminated glass is a type of safety glass that consists of two or more sheets of glass bonded together with one or more layers of EVA films. This bonding process creates a strong overall structure, and in the event of a breakage, the pieces are held in place by the plastic interlayer, reducing the risk of injury from shattered glass fragments. Lamination is achieved through a process of vacuuming, high pressure, and high temperatures which ensures the permanent fusion between the substances.
PTFE coated mesh is a great choice for use in EVA laminating ovens, with openings of 4mm x 4mm to ensure maximum permeability under pressure. It can withstand high temperatures up to 360℃, reducing the pressure from the vacuum bag and preventing self-explosion at the same time.
Besides safety glass laminating (to use on top of laminated glass between silicone bag and glass for air movement), PTFE open mesh sheets are also are customizable for the widest range of market applications, from commercial food service to dye sublimation, industrial gasket sealing, and beyond.
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