When it comes to deciding how to dry wet documents, vacuum freeze drying is the best recognized method in the restoration industry. A vacuum freeze drying chamber blast freezes wet documents to a temperature of 0 to -20 degrees Fahrenheit, then uses precise temperature and pressure control to vaporize the ice, bypassing the melting stage. A high-tech sensor monitors the rate of weight reduction within the chamber to signal when the drying process is complete and prevent secondary damage from over-drying.
Here at Polygon, we utilize vacuum freeze drying as the most effective method for drying:
Books. Of all available methods for drying wet books, vacuum freeze drying causes the least amount of warping, often returning books to a pre-loss condition. The chamber’s precise settings allow for slower, more controlled drying for rare books, which produces a much better result.
Clay-coated paper. When clay-coated paper (such as glossy magazines) gets wet and then dries, the pages tend to stick together. The unique process of vacuum freeze drying is the most effective drying method when it comes to this problem.
Large volumes. Our chamber’s 500-2,000 cubic feet capacity allows us to handle large volumes of books and documents simultaneously, resulting in faster recovery times and lower project costs.
When it comes to irreplaceable books or documents, vacuum freeze drying is the go-to method, producing the highest-quality results every time.