D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
8/93.36
D21H 25/02 (2006.01) B41M 7/00 (2006.01) D21H 25/04 (2006.01) D21H 25/18 (2006.01)
Patent
CA 2009621
13 Abstract: Method and apparatus for environmentally-friendly mass de-acidification of books and other printed and paper products employing pre-drying by high frequency radiation in a vacuum, a neutralization phase employing de-acidification solutions and evaporation of the solvent used also by high frequency radiation in a vacuum, whereby, preferably, a single treatment chamber (1) is utilized for pre-drying, neutralization and drying-up, whose inner cavity can be exposed to the HF/microwave radiation of a generator (2), such chamber being connected to the devices (4, 8, 9; 10 to 19 and 5) that connect to chamber (1) inside a closed, movable enclosure for the purpose of supplying and draining off the solutions used, for evacuation and for separation of the vapours present in the spent air given off during the drying phase, thus removing the threat to the environment. The proposed method and the apparatus permit rapid, economical and environmentally-safe mass de-acidification with practically total solvent recovery.
Eggersdorfer Rolf
Schwerdt Peter
Wittekind Juergen
Battelle Ingenieurtechnik Gmbh
Kirby Eades Gale Baker
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