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Re: [BKARTS] Update on Dri-Gel sheet desiccant - clarification



To clarify on Bill's query regarding desiccant capacity:

Drying books or other porous material with a wicking agent requires close proximity to the wet page(s). Paper receives and releases moisture via capillary action. Speedier drying requires more desiccant at closer intervals between wet leaves of the textblock. In the chart, any book will dry at the given rates - whether a 50 page book or 500 pages - the intervals of Dri-Gel interleaving determines the time for drying.

On the last example, a book had a sheet of Dri-Gel between every leaf of the book. It took an hour and a half to accomplish this task with a wet book. Paper sticks together when wet, and it was labor-intensive to peel the text leaves apart to interleave Dri-Gel. Once this task was completed, it then took only ten minutes of one pressing cycle to dry the book. No new Dri-Gel was required to remove moisture.

This excercise demonstrates the pulling power of the desiccant and shows how one can vary drying speed as it relates to other factors in drying the textblock.

I interleaved the textblock at every 5th sheet (10 pages) and placed the book in a zip-lock baggie. The moisture evaporated as a solid within the "chamber" (baggie) and was trapped by Dri-Gel. More experimenting with this one activity will result in a best-practices methodology as the product is used in the field.

Nicholas

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Edelpappband / "Millimeter" Binding Bind-O-Rama, Entry Deadline - October 1, 2005
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