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Compare Films

To compare the properties of plastics relative measurements must be used. Although there are specific standards, most of the time the evaluation of a particular plastic’s properties are published in terms of a relative scale such as “Poor, Good, Better, and Excellent.” The table below defines the properties of plastics in the following categories:

  • Mechanical
    Load per unit area, resistance to bending, or resistance to changing size.
  • Thermal
    Associated changes in the size of a part as compared to the change in temperature. changes in temperature affect more than size. For example, they affect the overall strength of a material to carry a load, or the weatherability of a material, which is directly related to the degradation of the plastic over time. Temperature usually accelerates this degradation.
  • Electrical
    The ability for the material to be a good insulator.
  • Chemical
    The compatibility of the material with different chemistries.

For a detailed profile of each high-performance film, click on the abbreviated film name in the left column.
*Fluoropolymer.

FilmChemical NameBrandMechanicalThermalElectrical Chemical
*ECTFE
Ethylene chloro-trifluoroethyleneHalar®
Norton®
ExcellentBetter
Continuous use: 150°C
ExcellentExcellent
*ETFE
Ethylene-tetrafluoroethyleneNorton®
Tefzel®
ExcellentBetter
-100° to 165°C
ExcellentGood
*FEP
Fluorinated ethylene propyleneTeflon®
Norton®
BetterExcellent
-190° to 205°C
BetterExcellent
LDPELow-density polyethyleneBlueridge
Bloomer
GoodGoodGood Better
*MPTFE
Modified polytetrafluoroethyleneNorton®
DeWal
BetterExcellent
-180° to 260°C
ExcellentExcellent
*PCTFE
PolychlorotrifluoroethyleneAclar® ExcellentBetter
-250° to 150°C
GoodExcellent
PEEKPolyetheretherketoneVestakeep®
Ajediuim®
Aptiv®
Optima®
ExcellentExcellent
Continuous use: 260°C
ExcellentBetter
PEIPolyetherimideUltem® ExcellentBetter
Continuous use: 171°C
BetterExcellent
PETGGlycol-modified Polyethylene terephthalateSpectar® ExcellentGood
Continuous use: 65°C
GoodGood
*PFAPerfluoroalkoxyTeflon®
Norton®
BetterExcellent
-150° to 260°C
BetterExcellent
PPPolypropyleneBlueridge
Bloomer
GoodGood
Continuous use: 82°C
GoodBetter
*PVDFPolyvinylidene fluorideKynar®
Norton®
ExcellentBetter
Continuous use: 130°C
BetterExcellent
*PVFPolyvinyl fluorideTedlar®ExcellentGood
Continuous use: 230°C
GoodGood
TPIThermoplastic PolyimideAurum®ExcellentExcellent
Continuous use: 230°C
ExcellentBetter


Teflon® is a registered trademark of DuPont used under license by Welch Fluorocarbon, Inc. Tedlar®, Tefzel® are registered trademarks of DuPont. Aclar® and Spectra® are registered trademarks of Honeywell. Norton® is a registered trademark of Saint-Gobain. Halar® is a registered trademarks of Solvay. Kynar® is a registered trademark of Arkema. Aurum® is a registered trademark of Mitsui Chemicals. Ultem® is a registered trademark of GE. Vestakeep® is a registered trademark of the Evonik Degussa. Aptiv® and Optima® are registered trademark of Victrex.

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