Heat Sealing Teflon® Film & Other High Performance Thin Films
Heat sealing is the thermal fusion of two (or more) melt-bond compatible thermoplastic materials. All heat seals require the precise control of heat, time, and pressure to create a quality weld. Thermal Impulse heat sealing is the process of welding thermoplastic films together by means of a resistance ribbon(s) through a cycle of heating and cooling under pressure. By controlling the rate of heating and cooling superior welds are created without sacrificing the physical property values of the original film. Thermal impulse techniques are used to make bags, lay flat tubing, medical packaging, large panels, protective garments, heat exchangers, geodesic domes, and other unique shapes that solve specific problems.

Heat Sealed Teflon® (Fluoropolymer) Properties

• Chemical Inertness – sampling bags & container liners
• Low Permeability – gas sampling bags
• Resilience to Weather – environmental chambers
• Optical Clarity – solar collectors
• Temperature Resistance – cryogenic bags -400ºF to 400ºF
• Releaseability – rubber & silicone encapsulated gaskets
• Dielectric Properties – electrical resistance
• Flammability – non-combustible human escape hoods

Heat Sealed Teflon® Characteristics

• Seal length – Unlimited
• Seal widths – 1/8", 1/4" and 3/8"
• Seal types – Fin seam, Overlap seam, Butt seam
• Custom Configurations – Teflon® Lay-flat bags, cubical enclosures, tank liners, protective hoods, and lay-flat tubing. A wide variety of shapes can be produced from Teflon® film, including heat sealing flat sheets to thermoformed parts or heat sealing thermoformed parts to themselves.

Heat Sealed High Performance Film Options

• Heat Seal Teflon® FEP Film         
•  Heat Seal Teflon® PFA Film
• Norton® FEP & Norton® PF
• Modified PTFE
• Aclar® & Clarus® PCTFE
• Tefzel® ETFE
• Norton® ETFE
• Kapton® PI
• PEEK
• Tedlar® PVF

Contact one of our Sales Engineers to discuss your custom Teflon® heat sealing application.