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[3A Composites formerly Monsanto Co., St. Louis, MO] A registered trademark for an acid-free laminated foam. Fome-Cor® is made from a rigid polystyrene core laminated with paper or plastic on both sides. The rigid, strong, flat panels are water-resistant and dimensionally stable. Direct sunlight will cause bleaching and degradation of any unprotected foam. Even though the foam is acid-free, the wood fiber paper may emit small amounts of organic acids, such as acetic acid. Fome-Cor® has been used as a protective backing for paintings.

Synonyms and Related Terms

FomeCor (sp); Foam Cor (sp); Foam Core (sp); mounting board; polystyrene core board; foamboard


Personal Risk

Combustible, producing styrene and carbon monoxide.

Working Properties

3A Composites Fabrication guide: [[1]]

Resources and Citations

  • Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
  • Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983 Comment: p. 90
  • Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
  • Submitted information: Christine Bird, November 2007

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