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Non-Porous Release Film



Airtech’s Dahlar® release film is a thin, non-porous material specially designed to prevent bonding with resin.
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Non-Porous Teflon® Coated Fiberglass is fiberglass fabric coated with a thin Teflon® layer which forms a non-stick, smooth surface. Often used as the first barrier between the composite laminate and the rest of the vacuum bagging materials, Porous Teflon® Coated Fiberglass is used to control the resin content of a laminate when vacuum bagging.

When applied on top of a wet laminate and covered with Breather Cloth, excess resin is drawn through the porous material and blotted up by the Breather Cloth. The amount of resin removed is contingent upon the number of layers ofBreather Cloth used. The Non-Porous surface will not retain resin and is also convenient to use on your table surface to allow for easy resin clean up.

Non-Porous Teflon® Coated Fiberglass can be used in conventional vacuum bagging, resin infusion and prepreg part manufacturing and is suitable in vacuum bagging applications up to 500°F (260°C).



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Physical Properties

  • Width: 60″
  • Thickness: .001″
  • Material: Polyolefin, multi-layer
  • Color: Green
  • Shelf Life: Indefinite
  • Manufacturer: Airtech International
  • Manufacturer Part Number: Dahlar® Release Bag 125

Technical Properties

  • Max Operating Temperature: 285°F
  • Elongation @ Break: 400%
  • Tensile Strength: 9500 psi

Please note: All data to be used as a guide only; not a specification. Dahlar® is a registered trademark of Airtech Advanced Materials Group and is used with permission.



Tips on how to use this product in certain applications are coming soon. If you would like to learn more about this product, give us a call at (800) 811-2009.


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