EP 1283300 B1 20120912 - Process and apparatus for deacidifying books
Title (en)
Process and apparatus for deacidifying books
Title (de)
Verfahren und Vorrichtung zum Entsäuren von Büchern
Title (fr)
Procédé et dispositif de déacidification de livres
Publication
Application
Priority
DE 10139517 A 20010810
Abstract (en)
[origin: EP1283300A2] To neutralize the acid in books, a processing chamber (1) takes the books half-opened on their spines to give free-projecting pages (6) in a fan. The pages are initially flushed with a water droplets/air mixture (11) in an underpressure, and then blown with a mixture (12) of air and an active substance in an overpressure. The water droplet/air mixture is heated to a maximum of 50 degrees C and preferably a maximum of 40 degrees C. The overpressure in the chamber, during blowing, is at least 1500 mbar and preferably at least 2000 mbar. The books are passed to a chamber (14) to dwell in a controlled atmosphere to cure the active substances. On removal, the pages have a pH value of ≤ 7.5. The active substance is preferably MgO powder.
IPC 8 full level
D21H 25/18 (2006.01)
CPC (source: EP)
D21H 25/18 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1283300 A2 20030212; EP 1283300 A3 20041013; EP 1283300 B1 20120912; DE 10139517 A1 20030220
DOCDB simple family (application)
EP 02012965 A 20020701; DE 10139517 A 20010810