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Freeze drying is used to preserve and recover valuable documents damaged by water, preventing further deterioration.

Freeze drying removes water from documents allowing them to maintain their biological structure and preventing further deterioration. But how does it work? Firstly, the documents are frozen solid in order to maintain their structural form. Next, they are placed in the freeze drying chamber and a high-pressure vacuum is applied to remove air. In the correct pressure and temperature, the moisture is converted to vapour, turned to ice and removed. Finally, a gradual temperature rise drives off more vapours and eliminates bound water from the documents.

Suitable documents: Books and manuscripts, Business records and documents, Historical and collectible items, Keepsakes, Textiles, Artwork

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paper documents