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[Honeywell (formerlyAlliedSignal)] A registered trademark for an laminated barrier film. Aclar is clear, heat-sealable film composed of layers of polychlorotrifluoroethylene (PCTFE) and polyester (PET) sandwiched between two layers of polyethylene (PE). The multifilm laminate provides a barrier for oxygen and water vapor. Aclar has been used to prepare sealed bags for low-oxygen level pest eradication.

Synonyms and Related Terms

Arclar (sp)

Other Properties

For 1 mil film: Oxygen transmission = 13.9 ml/m2d Water vapor transmission = 0.3 gm/m2d

Melting Point 2002

Additional Information

Aclar: Website

Sources Checked for Data in Record

  • Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
  • Pam Hatchfield, Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
  • Conservation Support Systems, Conservation Support Systems, Catalog, 1997