Vacuum Thermal Drying

Vacuum Thermal Drying

When paper is slightly-to-extensively wet, it may be dried using vacuum thermal drying. Books and records are placed in a vacuum thermal-drying chamber when they are wet or frozen. The materials will dry as vacuum conditions start and heat is pumped into the chamber.

Because materials stay wet, not frozen, while they dry, this process usually leads to distortion in books, and causes adhesion of coated paper and photographic materials. Water-soluble inks or pigments will also be affected.

This method is more recommended for small amounts of records, unbound materials, and documents which have suffered extensive water damaged.

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